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UM1B (Transformers Turns Ratio Meter) User Manual

1. _ PHASE V1 11 GRADES Data at Test Voltage HV Current Power Triangle 40 60 80 BPHU FPHY WPHW Time mseg Figure 5 38 Display of powers calculated for a regulator adjuster position 65 lio 5 SOFTWARE DESCRIPTION 5 5 Test duplication assistant In view of the number of files involved in a test and in order to facilitate the work of the operator as regards storage the programme incorporates a utility that allows tests to be copied to a location different from that originally used by the programme with the possibility of both the point of origin and the destination being fixed flexible or network units By clicking on a Figure 5 39 will be shown ASSISTANT 3 xj From CASAGEN_WIN Ensayos ex G CASAGEN WIN Ensayos CANCEL Figure 5 39 Test copy assistant In Origin the name of the test file to be recorded is selected while in Destination the variable selected is the directory in which the test is to be recorded 66 liz 5 SOFTWARE DESCRIPTION 5 6 Observations page The programme also incorporates a utility known as Observations where the operator may make notes and or remarks on events using a maximum 25 lines and 80 P lt y characters per line The button will be active whenever a test or analysis is being performed REMARKS ES x CANCEL OK Figure
2. D 2 Description Selecting the option Config of the main menu appears the following screen amp ETPRT CONFIGURATION UM1B d SAGEN_WIN Ensayos 111 uni ics sz APPENDIX D FACTORY MESUREMENT As default in Working Mode appears Field Measurement If is selected Factory Measurement then it will appear the controls in the sections ASCII File of Measurements and Default Value of Technical Data In the first section pressing the button Search Directory it will be selected the directory where you want to leave a copy of the file of ASCII measurements in which all the data of the test appear in format ASCII In the second section some values are configured to appear by defect in the screen of TECHNICAL DATA These are Connection group HV LV Taps number Changer Nominal tap Step 96 12 hers APPENDIX E GLOSSARY APPENDIX E GLOSSARY What follows is a description of terms habitually used in relation to the equipment and this field of work Adjuster Device capable of modifying the number of turns of a transformer and thus being able to change its transformation ratio It differs from a regulator in that it is normally fixed at a given position in the factory Assembly Functional unit forming part of an Item and made up in turn of components motor turbine Alternator Set of apparatus combined to transform kinetic energy into alternating current Availability Capacity o
3. The connections have not been made properly The power voltage is not within the margins see specifications The equipment is faulty 86 Insert the key adequately oriented in the parallel port of the PC Install the program inserting the diskette key when concluding the installation again Connect properly Contact an authorised technical service Check the connections and repeat the measurement Try several times If the problem persists use a reducing transformer between the equipment and the high voltage winding of the transformer Send the equipment to an authorised technical service Check the connections and repeat the measurement Check the existing power voltage Send the equipment to an authorised technical service T 7 TROUBLESHOOTING SYMPTOM PROBLEM SOLUTION The message An off range low voltage has been measured Check for possible problems in the measurement loop 1 UV 2 wu appears on the programme screen The message Measurement error Check connections and verify that the selected connection group is correct appears on the program screen The message COMMUNICATIONS LOST Check connection RS 232 appears on screen The message Impossible to perform acquisition because the test button is not pressed Repeat measurement appears on screen The connections have not been made properly The equipment is faulty The connection group has been in
4. When the operator decides to carry out a test the first thing he should do is identify the transformer to be tested which will be used to name the file containing the test data Test identification This identification shall include the following data as shown in Figure 5 8 TEST IDENTIFICATION DATA Wd b nod xl wee NuMBER 20064 MANUFACTURER UNIRAVIS bid MACHINE TYPE Power Transformer TRP v FN fest SITE Unitronics h TECHNICAL SITE Laboratory JE Antonio v INSTRUMENT UM 3 00150 wopy 04 25 00 OX x CANCEL OK Figure 5 8 Test identification data screen Me a 5 SOFTWARE DESCRIPTION MANUFACTURING NUMBER This is the serial number of the transformer being tested MANUFACTURER The manufacturer is selected from a list If the manufacturer in question is not included on this list then by selecting other a new manufacturer may be included Figure 5 9 A similar window appears in all those cases in which the other option exists MANUFACTURER Figure 5 9 Screen for insertion of the name of the manufacturer of the transformer being tested MACHINE TYPE The type of machine is selected from a list that cannot be modified by the operator FUNCTION The function of the transformer at the installation LOCATION The name of the facility e g Pisuerga Thermal Power Plant is selected from
5. Zig zag connection Z connection Connection of coils such that one end of each phase winding of a three phase transformer is connected to a common point neutral and where each phase winding has two parts in which phase lagged voltages are induced 118
6. os Figure 5 14 Measurement configuration screen for windings with regulator adjuster If no position is selected for the measurement of a winding with a regulator and attempts are made to go on to a subsequent phase the programme will display a message indicating this anomaly Figure 5 15 m ERROR MESSAGE Lx Didn t select any tap to measure on High Voltage Tap changer Select one at least Figure 5 15 Warning that no winding has been selected for the test 50 liz 5 SOFTWARE DESCRIPTION 5 3 4 Connection This window indicates the correct connection of the equipment to the transformer on which the test is to be performed Before taking any action make sure that the equipment to be tested is free from voltage In addition if the test is performed on an autotransformer the programme shows the connections to be made with respect to the windings before any operation is carried out on the UMIB unit Figure 5 16 m ETPRT AUTOTRANSFORMER CONNECTIONS Be sure the machine under test has no voltage BLACK wire redclip with BLACK wire black clip CONNECT IT tothe X MA The system supply must have ground connection Otherwise the unit may be damaged or the test not correct Figure 5 16 Preliminary connections to be made in the case of autotransformers The programme checks that the UMIB is turned on and that the serial cable betwe
7. Once all the conditions are met the OK and NEXT buttons will be enabled 5 3 5 Measurements This section deals with the measurement of the transformation ratio The measurement screen Figure 5 18 shows two graphs in which will be plotted the current through the high voltage winding and the voltage in both windings Between these two graphs information is displayed on the transformer connection group and on the position measured if the transformer has a regulator adjuster 52 liz 5 SOFTWARE DESCRIPTION m ETPRT TRANSFORMER TURNS RATIO MEASUREMENT High Voltage Current So 40 450 50 55 a a Time mSec 1 V2 CONNECTION GROUP Yznlil 5 12 0 00 319A ZA 6 12 a UN BU Time mSec Y Representation v l vi v2 n sintR rrR PH v1 11 PH vi v2 PHASEU 117 85 2141 0 0002 82 55 8248 13 68 0 63 PHAsEV 117 64 2139 0 0002 8252 82 48 13 59 PHASE W 117 24 2131 0 0002 8253 8248 Figure 5 18 Measurement screen In the lower part there is a table representing the following for each of the 3 phases the voltage in the high voltage winding V1 the voltage in the other winding tested V2 the current through the high voltage winding I1 the transformation ratio measured SimTR the theoretical transformation ratio that should exist TTR the phase mismatch between the voltage and current in the high volt
8. Spare Part component assembly equipment or machine belonging to an Item of a higher order and susceptible to replacement due to breakage wear or consumption Spiral One turn of a conducting wire around a core Stator Fixed part of a rotating electrical machine inside which the rotor turns 17 herens APPENDIX E GLOSSARY Star connection Y connection Connection of coils in which one end of each phase winding of a three phase transformer or of each winding of the same voltage assigned to single phase transformers constituting a three phase bank is connected to a common point neutral the other end being connected to the terminal of the corresponding line Terminal Conducting element connecting a winding to external conductors Test Check performed on an item to assess one of its characteristics Transformation ratio Ratio between the number of turns of a secondary winding and that of a primary In practice it represents the ratio between the voltage in the high voltage winding and that of the low voltage tertiary winding Transformer Device capable of changing the level of magnitude between the input and the output providing galvanic insulation between them Voltage Difference in potential between two points Measured in volts V Winding Current conducting part of a machine Winding Set of turns forming an electrical circuit associated with one of the voltages for which the transformer has been defined
9. There will be as many sub directories in C SAGEN_WIN Tests as there are machines that have been tested A series of files will be generated in each sub directory the structure of which will be similar to that of the sub directories as regards nomenclature These files will have a 3 character numerical extension 0 to 999 each of which will contain a test on the same machine The files to be generated are as follows RDTTTTFFFFFNNNN nnn This file is used to record all the data on complete tests in Excel format in text mode with tabulators 44 liz 5 SOFTWARE DESCRIPTION medRDTTTTFFFFFNNNN nnn This file is used exclusively by the programme and contains all the test data It cannot be edited by the operator TTTFFFFFNNNN cab The technical data on the transformer are recorded in this file It cannot be edited by the operator A temporary file will also be automatically generated in C SAGEN_WIN Tests whenever a process is completed This file known as medRDTTTTFFFFENNNN tnn serves as a back up for the possibility of anomalous system failures such that the programme can continue with the last process performed The file remains in effect only until the test is successfully performed at which moment the definitive file described above is generated and this temporary file is deleted The UMIB software uses this nomenclature structure to search for tests as a result of which THE USER SHOULD NOT ALTER THE NAMES GENE
10. nitronics electric UMIB Transformers Turns Ratio Meter User Manual AREAS lisse INDEX INDEX PROLOGUE ao 4 Log BOLLS e 5 TEE Y STE YII cu E oi 6 T INTRODUCTION assumes ERR S NNQORO IA IMEEM UI IDE NEN EA IM M IN I NEN EsSu M NIME 7 2 DESCRIPTION OF MEASUREMENT METHOD eee eese sente seen eee tn nte n ntn 9 2 1 Philosophy of the method 4 eere e eese sees eee eese enses tn seen stt toas ta rro ncc coro sesso nena 9 2 2 Test characteristics eerie eee eee ee sees eene enses stato aeta statuae tastes sosta sesenta seasons 10 2 3 Simple phase Measurement 4 eee e eee eee eese enses testen stato seta sts sn seta sess en stas es tnus 10 2 4 Three phase Measurement eee esee eese eee eene enses sna tn seta sesto seta sesso seta sensns ta sees snus 12 2 12 TOPS DA M 14 AAA GrOUpS V qe 16 AAD GrOUPS DZ 17 NS Bgm 18 3 UMIB EOUIPMEN I essssvoascs n ena UA IBS YE RERUMS NEIN RSNNA NER KEANSEK NR VERS ESERSE 19 KaENuenilemicediodm E vse 19 3 222 System elemenhls tree tree aet en te eoe PEN SURE ERES Ea NE eY EUER EE EY a EE Yee Pose EE Seed e vun tes Sorreta eU 20 3 3 Physical descrip
11. 250 mA T 250 Vac 20x5 Rear Panel 315 mA T 250 Vac TRS 315 mA T 250 Vac TR5 Mother Board 160 mA T 250 Vac TR5 630 mA T 250 Vac TRS 630 mA T 250Vac TR5 630 mA T 250 Vac TR5 630 mA T 250 Vac TR5 Microcontroller Table 9 1 List of fuses All fuses should be homologated and withstand 250Vac Test signal Voltage 115V rms Current 2A rms Frequency Same as the MAINS 98 Hh pinoy Measurement ranges Transformation ratio Resolution Current Resolution Phase Resolution Measurement accuracy Transformation ratio Current Phase 9 SPECIFICATIONS 0 9 3000 7 automatic scales AY digits 3 1 2000 mA rms 6 automatic scales 3 digits 180 180 3 digits 0 3 reading 2 digits 1 reading 2digits 0 15 According to the electromagnetic compatibility tests performed when this measurement is performed in an RF electromagnetic field with a frequency of approximately 80MHz deviations may occur in the measurements which in no case will exceed 5 of the measurement Measurement time Single phase measurement Three phase measurement 20 35 Depending on test mode 60 90 Depending on test mode These times may vary slightly depending on the PC used for the test These times have been measured with a PII at 300MHz Ambient conditions Operation Temperature Humidity Storage Temperature
12. COTRADIS Technical Site Laboratorio Function test Machine Type Transformador de Distribuci n Done by Victor MFR Number 20864 Date 05 06 03 Ah _______ __ _ TEST DIAGNOSTIC LE e Circuit Overall Indicator Electric Circuit Magnetic Circuit Geometric Circuit Dielectric Circuit Indications Dielectric Degradation No trace Abnormal Aging No homogeneous aging traces Abnormal Insulation Resistance No trace Insulation State _Very weak state traces Danger Partial Discharges Traces Presence in solid insulation Unitronics S A U Figure C 9 Screen of the application Diag_Help ETP_TRENDS Expert software of trends for transformers Figure C 10 SYSTEM T Tums Ratio I Excitation Current Insulation Resist 1 20 F Iv Winding Resist HV tal TR Error Polarization Index Time Constant y o tn m Short Circuit Imped Ohms w 1 8 27 09 36 070497 281037 15 04 98 071038 210433 08 11 93 05 05 00 16 10 00 25 04 01 U M Phasey I Phase wi TestDales DD MM YY KV Smoothing 4 A Tap Number Unitronics S A U 1 Figure C 10 Screen of the application Trends 110 unitronics il APPENDIX D FACTORY MEASUREMENT APPENDIX D FACTORY MESUREMENT D 1 Introduction This appendix explains the option Working Mode of the configuration option of the application of Transformer Turns Ratio Meter UM1B
13. Point of zero potential Do not confuse with mass History Record of incidents failures repairs and actuations in general of a given Item Installation System made up of items forming a functional production or service unit Insulation Substance having low electrical conductivity The current passing through such a material may be considered insignificant Insulation resistance Resistance presented by an insulating material to the passage of current measured in the direction in which the insulation is to be ensured Item System sub system installation plant machine equipment structure building assembly component or part that may be considered individually and that may be revised or tested separately LED Light Emitting Diode This is a diode that emits a light of a certain wavelength when polarised Machine Complex unit of a higher order made up of assemblies components and parts grouped to form a functional system Equivalent to the term equipment Magnetic package The elements constituting the electromagnetic coupler that transforms electrical energy into magnetic energy for this to be transformed in turn into mechanical energy rotating machines or again into electricity transformers Maintenance Set of technical and administrative activities aimed at conserving or recovering an Item in or to conditions allowing it to perform its function Maintenance policy Strategy governing the decisions of the maint
14. being tested should be disconnected THE CABLES MUST BE IN PERFECT CONDITIONS TO AVOID THE DANGER OF ELECTRIC SHOCK OR ERRORS AND INACCURACIES IN MEASUREMENT If any anomaly is detected in the cables or if their correct status is to be verified the following simple test may be performed It should be remembered that we have two cable hoses high voltage female connector and red clamps and low voltage male connectors and black clamps The connections from the pins to the connectors are identical in both cases Fig 6 1 High voltage left and low voltage right test cable hoses We shall simply require a multimeter indicating electrical continuity or discontinuity To check each cable proceed as follows 1 Disconnect the cable hose at both ends 2 Check the continuity between cables To accomplish this proceed as follows Take one of the clamps for example the one for the red cable phase U and attach it to the test point of the multimeter When the other test point is placed at each of the other three clamps the multimeter should indicate discontinuity Repeat the process 83 6 EQUIPMENT MAINTENANCE for each of the other three clamps for the yellow V phase blue W phase and black neutral cables Then take the hose by the end of the 9 pin connector The pins are interconnected by pairs pin 1 with pin 2 pin 3 with pin 4 pin 5 with pin 6 and pin 7 with pin 8 A check should be made to ensure that th
15. Communications LED indicator Relay control matrix for measurement with three phase equipment Measuring circuit overcurrent indicator Connection group and regulator positions to be measured selectable by menu Parameters used Voltage in High Voltage Winding Voltage in Low Voltage Winding Current in High Voltage Winding Transformation ratio Minimum control PC requirements PC Based on Pentium 200 MHz processor or better Operating System MS Windows 95 MS Windows 98 or MS Windows NT 4 with Service Pack 4 or better RAM 32 MB RAM VGA colour monitor Floppy disk drive CD ROM drive v v mS 102 APPENDIX B CONTROL SOFTWARE INSTALLATION APPENDIX A CE CONFORMITY DECLARATION We declare on our own responsability the conformity of the product at which this declaration refers with the disposals of the following directives and applicable standards UNITRONICS S A U Plaza Espa a 18 9 fl off 9 28008 Madrid SPAIN VAT number ES A 28121572 cd Tel 34 1 542 52 04 UNITRONICS Fax 34 1 542 78 96 Instrument Transformer Turns Ratio Meter Equipment UMI Manufacturer UNITRONICS Model UMIB CE Marking directive DC 93 68 CEE Electromagnetic compatibility directive DC 89 336 CEE Applicable armonized standards EN 61326 1 2000 CISPR 22 93 TEC 61000 3 2 95 TEC 61000 3 3 95 IEC 61000 4 2 95 IEC 61000 4 3 95 IEC 61000 4 4 95 IEC 61000 4 5 9
16. EQUIPMENT MAINTENANCE Given the special characteristics of the equipment IT SHOULD BE REPAIRED ONLY BY AUTHORISED TECHNICAL PERSONNEL As has been pointed out in other sections in view of the danger of handling mains electrical currents the maintenance personnel repairing adjusting or calibrating the equipment should be qualified or suitably trained Opening of the equipment by non authorised personnel implies the cancellation of the guarantee period The equipment contains no internal elements to be handled by the operator and SHOULD NOT BE OPENED IN ANY CASE SERIOUS DANGER OF ELECTRICAL SHOCK The maintenance of the equipment is very straightforward and consists simply of keeping it in good external working order and caring for the electrical power cables In the event of the fuse blowing it should be replaced with one having identical characteristics as described in section 6 3 Replacing the fuse If the fuse blows repeatedly it should be sent for repair see section 8 1 Return for calibration repair In order to maintain its values of accuracy within the specified limits the equipment should be calibrated annually Special care should be taken to prevent the unit from getting wet protecting it from the rain if necessary In the event of extreme humidities and temperatures or humidities and temperatures outside the margins the measurements provided the equipment will lose their validity and the operator should wait for it to
17. STEPS PRIOR TO USE 4 1 Precautions in the installation area When this instrument is used to test high voltage machines all the habitual safety procedures and standards applicable to this type of machine should be adhered to Ensure in all cases that the equipment being tested is completely discharged and grounded before touching it In order to ensure the safety of the equipment operators or any other worker in the area as well as the integrity of the system itself and the validity of the measurement results a series of precautions should be taken at the test location These may be summarised as follows e Check that the surroundings are appropriate without rain or dust storms and that they are within the temperature humidity margins specified for operation see chapter 9 Specifications e Check that the system supply voltage is within the specified operating limits see chapter 9 Specifications and that it is appropriately grounded e Check that the equipment being tested is free from voltage e Place the measuring unit and the control computer close to the equipment being tested as shown in Figure 4 1 e Isolate the test area using the mechanical safety elements homologated by the safety department of each company such as beacons fencing safety tapes of different colours at waist height etc 30 Illera 4 PREPARATORY STEPS PRIOR TO USE 4 2 Equipment connection In view of the potential hazard of this equipm
18. UMIB EQUIPMENT 3 UMIB EQUIPMENT 3 1 Product description The UMIB is an instrument especially designed to determine the transformation ratio of high and medium voltage single and three phase transformers and autotransformers used for both power generation and distribution The equipment is based on the measurement of a series of simple parameters by means of a data acquisition system and a computer application for the performance of calculations Figure 3 1 Photograph of UMIB equipment Once the data have been obtained sufficient information is available for diagnosis of the current status of the transformer and for the evaluation of trend curves The advantages that characterise the UMIB method may be summarised as follows e minimum risk for the machine e reduced unavailability times e straightforward performance high degree of test automation 19 lio 3 UMIB EQUIPMENT 3 2 System elements The following elements and accessories might be available with the equipment NOTE The XX nomenclature indicates different versions depending on the characteristics of the equipment Please consult with your sales representative UMIBXX UMIB measurement equipment with serial number Figure 3 2 Photograph of the unit BELO00 Measuring equipment transport bag Figure 3 3 Photograph of transport bag 20 liz 3 UMIB EQUIPMENT CR00 Grounded mains feed cable Shielded serial cable with DB9
19. and offers the possibility of selecting another Figure 5 30 60 liz 5 SOFTWARE DESCRIPTION Figure 5 31 Warning that the file selected does not correspond to the UM 1B 5 4 2 Transformer technical data Once a test has been loaded the programme will display a screen Figure 5 32 showing test identification data in its upper part and technical data on the machine in the lower For more information on the meaning of these data refer to section 5 3 2 Although these data are merely informative the operator may change them with the exception of the test identification data This is indicated by the colour of the background of the indicators if the background is yellow the field cannot be modified if it is white the data may be modified This is valid for the entire analysis The name of the file being analysed is shown at all times in the upper part of the screen 5 ETPRT TECHNICAL DATA x n ENSAGEN WIN EnsayosXTRPCOTRAS4032NRDT TRPCOTRA54032 0 TECHNICAL SITE unitronics SITE Alf MADE BY A DATE _ 05 06 01 UM1B SERIALN 20002 MACHINE Power Transformer MANUFACTURER COTRADIS FUNCTION test SERIAL N 54032 TYPE 50 24 20 No Vaid High Voltage Low Voltage Tertiary ertiary z Transformer s Singlephase COMPOUND VOLTAGE Kv 0 000 CURRENT 4 0 000 Autotransh Th hase el sisi eephse d TAP CHANGER v HIGH VOLTAGE v REFRIGERATIO
20. be performed on high voltage vs low voltage or on high voltage vs tertiary If two regulators are present the regulator to be established is selected along with the position which is usually nominal If any of the windings has a regulator or an adjuster the positions to be measured may be selected The nominal position is shown in blue and when this is selected it will be possible to choose the central positions to be tested if there are several There is a verification box identified as A that may be used to select all the possible positions at the same time If however the two windings selected with this method have a regulator one will have to be considered fixed as a result of which a position will have to be established for one of them and all the measurements for the other will have to be performed with respect to the position of the other winding 49 liz 5 SOFTWARE DESCRIPTION m ETPRT MEASUREMENT CONFIGURATION x FILE EXSAGEN WINSEnsayosSTRICOTRAB80324RDTTRICOTRA88032 0 TECHNICAL SITE Australia 0 STE Af MADE BY A DATE 050601 UM1B SERIAL Ne 2000 2 MACHINE Intensity Transformer MANUFACTURER COTRADIS FUNCTION power SERIAL IN 98032 CALIBRATION Tap Changer oda SELECT TAPS TO MEASURE dw 254 220 eee 2v 31 1671 231 307 Si Mos SJ ONU SS aii dej 257 21 elt boil 5 v Tan 29 a 2G T 33 m TAP CHANGER TO FIX TAP TO FIX amp B 13 B 20 27 gi 24 B OI E
21. from the data collected and take the appropriate decisions through comparative analysis with other cases The test will consist of applying a known voltage to one of the windings in order to ascertain the effect on the other In this way possible problems with the regulator and windings may be detected such as short circuiting between turns defective contacts open circuits etc 2 3 Simple phase measurement The single phase measurement is simplest and consists of introducing an alternating voltage 50 or 60Hz to the winding to high voltage to the transformer and measuring of precise form the voltage induced in the winding of low voltage Measuring suitably these two voltage and obtaining its relation we can obtain the relation of transformation to the transformer So that this relation approaches to the relation of turns they must execute the following conditions The impedance of short circuit of the transformer must be much smaller than the impedances of losses of the magnetic material The equipment does not have to charge the winding of low voltage to assure that it does not take place circulation of current in the winding of low voltage 10 E 2 DESCRIPTION OF MEASUREMENT METHOD The UMIB introduces voltage to the transformer whenever is illuminated the button of Test This button acts like an emergency switch to let apply voltage at any moment of the coarse measurement with pressing the button of Test In
22. has the value Inf it will mean that a low voltage equal to zero was input on the technical data screen as a result of which this value will need to be modified If the value appearing is NaN both the low and high voltages are equal to zero If the number of regulation positions is higher than may be displayed on a screen by the programme the LAST PAGE and NEXT PAGE buttons will be enabled allowing the operator to move to different pages By clicking on the LE button the same data are plotted on a graph Figure 5 37 showing the transformation ratio for each winding position The phase to be displayed may be selected the plot being of the colour of each phase in the selection box TRANSFORMER TURNS RATIO FOR EACH WINDING TAP POSITION 29 gt 2 87 27 26 E 297 2 4 23 22 24 2 0 31039 o un vB E 8 3 UE DU we 149 Ces DH 38 48 70 1 5220723 M PHASE U V PHASE V Y PHASE W TAP Figure 5 37 Graph showing the ratio measured at different regulator adjuster positions This graph is floating in other words it may be moved across the entire screen To delete it click on the S button 5 4 4 Power table This screen Figure 5 38 shows the power levels calculated from the measured currents and voltages These data are normally taken for the central position of the transformer although if this has not been selected when performing the measurement section 5 3 3 Measurement config
23. may cause rapid temperature variations leading to humidity due to condensation inside this possibly leading to erroneous measurements or short circuiting in the worst case scenario Prior to storing the equipment it is advisable to clean it Likewise it is recommended that all the equipment elements be placed in appropriate containers for storage The location selected for storage of the equipment should ensure the following No direct exposure to sunlight No exposure to high dust levels No exposure to high levels of humidity No exposure to active gases No exposure to extreme temperatures The recommended storage conditions are as follows Temperature 5 C to 75 C c Humidity cuina 596 to 8096 In places where humidity may be very high it is recommended that desiccating bags be used 81 T 6 EQUIPMENT MAINTENANCE If the storage period has been very long it is advisable to send the equipment to an authorised technical service for calibration When transporting the equipment for testing in different locations appropriate transport containers should be used Likewise the equipment should not be subjected to continuous vibrations or knocks The equipment should be transported under the previously recommended storage conditions 82 uni ics Mee 6 EQUIPMENT MAINTENANCE 6 5 Checking of test cable hose A For checking of the cable hose both the unit and the equipment
24. must be input If there is any test on this transformer the rest of the fields will be filled in automatically otherwise they will be left blank 59 liz 5 SOFTWARE DESCRIPTION If the search is carried out by machine manufacturer and type this area will be highlighted in a grey box and when these fields are clicked on a menu containing machine manufacturers or types will be displayed If when one is selected the manufacturing number is not automatically included it will be because no test has been performed on a machine having the selected characteristics if this is filled in there may be various transformers with these characteristics the one desired being selected by clicking on the manufacturing number tab Once the machine to be analysed has been selected click on the E button and the file selector will appear Figure 5 30 This is used to choose the test to be analysed for this machine RDT RE rre C ASAGEN_WIN Ensayos TRPGENER41981 Eindin TRPGENER41981 al Al la ROTTRPGENER41981 0 File name S File type Figure 5 30 Selector of file containing the test to be analysed Once the test has been selected it will be loaded into the memory by clicking twice on the Load button However before doing this the programme checks that it actually is a UMIB test file if this is the case it is loaded in the memory otherwise the system indicates that the file is incorrect Figure 5 31
25. recover its operability For example leave it to dry if it has got wet Likewise changes in the location of the equipment especially if stored may cause rapid temperature variations leading to the appearance of humidity due to condensation 77 T 6 EQUIPMENT MAINTENANCE 6 1 Cleaning of equipment ATTENTION Always turn off the power switch 10 and disconnect the power cable from the socket before cleaning the equipment Use the following for cleaning e asoft dry cloth if the equipment is not particularly dirty e acloth soaked in a diluted neutral cleaning product if the equipment is very dirty or has been in storage for some time After checking that the body has dried completely use a soft dry cloth to clean ATTENTION Never use alcohol or any abrasive product to clean the body since it may damage it or cause it to lose colour 78 T 6 EQUIPMENT MAINTENANCE 6 2 Care for cables The UMIB equipment provides medium voltage alternating current consequently THE CABLES SHOULD BE IN PERFECT CONDITION TO PREVENT THE DANGER OF ELECTRIC SHOCK OR ERRORS OR INACCURACIES IN MEASUREMENT The cables and their condition should be periodically checked to detect possible deterioration or breakage that might cause situations of danger for the operators or the malfunctioning of the equipment If the cables are damaged they should be sent to an authorised technical service for repair or new cables should b
26. the PC The unit UMIB makes automatically according to the chosen group of connection all the connections precise and the short circuits necessary to come to the measurement Also it will use the equations precise to obtain the values of relation of simple transformation looked for by the user Nevertheless if sometimes we have a problem when measuring of automatic form three phase transformer without neutral it is recommended to make the measurement in single phase way being made the connections that appear in the tables of each group With the results of the single phase measures we can be located the problem and be identified the phase in which appears the same one 12 qe 2 DESCRIPTION OF MEASUREMENT METHOD 2 4 1 Groups Dy Groups Test Phase vi v2 RT Theoric Phase V1 V2 U 1W 1U 2u 2n V 3 Nu Dyn1 V 1U 1V 2v 2n V f 180 Nv W 1V 1W 2w 2n aN Nw U 1U 1V 2u 2n V 5 Nu Dyn5 V 1V 1W 2v 2n a 180 Nv w 1W 1U 2w 2n UN Nw U 1W 1U 2u 2n V 3 Nu Dyn7 V 1U 1V 2v 2n V x 0 Nv W 1V 1W 2w 2n an Nw U 1U 1V 2u 2n v 3 Nu n v 2n i v Dyn11 V 1V 1W 2v 21 a 0 N wW 1W 1U 2w 2n ae Nw U 1W 1U 2u 2v 2w i 7 RI Dy1 V 1U 1V 2v 2w 2u
27. y 180 R2 W 1V 1W 2w 2u 2v d R3 U 1U 1V 2u 2v 2w e a RI Dy5 V 1V 1W 2v 2w 2u y 180 R2 W 1W 1U 2w 2u 2v N R3 U 1W 1U 2u 2v 2w v 3 RI Dy7 V 1U 1V 2v Qw42u NN 0 R2 y V Ww 1V 1W 2w 2u 2v A R3 U 1U 1V 2u 2v 2w m RI Dy11 V 1V 1W 2v 2w 2u Y 0 R2 y wW 1W 1U 2w 2u 2v am R3 When the measurement is made with access to neutral can be measured the relation of simple transformation directly Nevertheless when the measurement is made without access to neutral are measure compound relations and a system of equations is due to solve to obtain the simple relations The equations that solve this system are those that appear to the right of the following table Measured relation Simple relation Rl Lo 1 i C 2 RE R24 2 R2 R34 2 R3 RI RI R2 R37 ee hee Nu Nv Nw C Nu 1 2 R1 R2 R3 R2 l 1 Nv Nw Nu N C 2 RI R2 R3 1 RB EN a Nw Tm E Nw Nu Nv 2 R1 R2 R3 13 liz 2 DESCRIPTION OF MEASUREMENT METHOD 2 4 2 Groups Dd Groups Test Phase V1 v2 RT Theoric Phase v1 v2 U 1U 1V 2u 2v v Nu Ddo V 1V 1W 2v 2w i 0 Nv V wW 1W 1U 2w 2u dd Nw U 1W 1U 2u 2v v Nu Dd2 v 1U 1V 2v 2w n 180 Nv wW 1V 1W 2w 2u aN Nw U 1U 1V 2w 2u v Nu Dd4 V 1V 1W 2
28. 3 U 1U 1V 2u 2v RI Yy6 V 1V 1W 2v 2w e 180 R2 w 1W 1U 2w 2u UN R3 In this set of groups when we do not have in neutral accessible in both windings it is not either possible to directly obtain the simple relation with a measurement reason why it is necessary to raise a system of equations In addition in these groups of connection it is impossible to obtain the three simple relations with three simple measures when the columns are unbalanced Therefore in this case we suppose that the columns are balanced When the three are not balanced relations will leave different but it is not possible to obtain these simple relations of precise form The equations used by the user software are the following ones Relaciones medidas Relaciones simples 2 SS RI R2 R3 d rs AE ere Nu Nv R1 R2 R2 R3 RE R3 2 Rz LEE RI R2 R3 Nv Nw R1 R2 R2 R3 R3 RI 2 jio sme tU wo BE Ao Na RI R2 RO R3 R3 RI 16 liz 2 DESCRIPTION OF MEASUREMENT METHOD 2 4 5 Groups Dz Groups Test Phase vi v2 RT Theoric Phase v1 v2 U 1U 1V 2u 2v 2w aa RI Dz0 DznO V 1V 1W 2v 2w 2u V 2l 0 R2 Ww 1W 1U 2w Qu42v il R3 U 1W 1U 2u Qv42w m RI Dz2 Dzn2 V 1U 1
29. 3 Ww 1W 1U 2u 2v 2w d R3 U 1U 1V 2u 2v 2w RI Yd11 V 1V 1W 2v 2w 2u ur 0 R2 V 8 W 1W 1U 2w 2u 2v 503 R3 In this case it is not either possible to obtain the relation of simple transformation directly when one has been measures without access to neutral The equations that we must use in this case are the following ones Measured Relation Simple Relation Rl Nu Nv Nu RI R2 R3 Jj R22 Nv4 Nw R1 R2 R3 Ny 2 R3 Nw Nu R1 R2 R3 Nw ERU el 15 liz 2 DESCRIPTION OF MEASUREMENT METHOD 2 4 4 Groups Yy Groups Test Phase vi v2 RT Theoric Phase V1 V2 U 1U IN 2u 2n V Nu YNynO V 1V IN 2v 2n TS 0 Nv w IW IN 2w 2n jd Nw U 1U IN 2u 2v V Nu YNyO V 1V IN 2v 2w M 0 Nv w IW IN 2w 2u Nw U 1U IN 2u 2n V Nu YNyn6 V 1V IN 2v 2n m 180 Nv w IW IN 2w 2n 2 Nw U 1U IN 2u 2v V Nu YNy6 V 1V IN 2v 2w m 180 Nv w IW IN 2w 2u A Nw U 1U 1V 2u 2v RI YynO V 1V 1W 2v 2w a 0 R2 w 1W 1U 2w 2u ON R3 U 1U 1V 2u 2v a RI y V LW a YyO V 1V 1W 2v 2 m 0 R2 w 1W 1U 2w 2u 2 R3 U 1U 1V 2u 2v y RI Yyn6 V 1V 1W 2v 2w v 180 R2 w 1W 1U 2w 2u i R
30. 3S 63 JAA Power Table ND 64 5 5 Test duplication assistant ccccsssseccessescsccccsscssesscssssssesscsscsssssscsscssssesessesssssneesoes 66 5 6 Observations Page cccscccisscsonossscsssvssecssesssoessons soovsnedsccsseossevsvenssussscesceutsvessecscsessesosesosessee 67 5 7 Report printing ccsssccscsscssscesssscssesscssccsssescsscssscesessossssesecssesscessssncsscsesseneesesssssseesoes 68 5 8 Y qe C 74 HARMONIC 75 6 EQUIPMENT MAINTENANCE Roa 77 6 1 Cleaning of equipment eee er eroe eere sonssvessosesosssnsesesseassseccossysedsveessessevonsescesons 78 6 2 Care for cables eee eee eee ee esee Oosies asorr eposin oroS ors oo sesso seta sens sos Er Sroa sees snos 79 6 3 QICTB R3 OETVS VITS CPP A 80 6 4 Storage and transport 4 rece e ee eee esee eese ente stessa tn sets noo noo nono sees sone tastes sns osos noo 81 6 5 Checking of test cable hose 1 eee e eese eene seen seen testen sensns ta stesso seta stesse neta sets cos 83 Zo TIROUBLESHOUUPEINQU ed 85 de TECHNICAL SUPPORBE aa 89 8 1 Return for calibration repalr ooommmsmnssss 90 8 2 Requesting spares mocconooonoonccnconnocnnonncononecoononncnnnoonconcno stesso natu setas esso nono sesso nono stesso neta sees noes 93 5 3 ObservatiODS assscssasscsseacsssssecasceonsdcnsenssenssnsnsdossesssgncansa S
31. 5 IEC 61000 4 6 96 IEC 61000 4 8 93 IEC 61000 4 11 94 Low voltage directive DC 73 23 CEE Applicable armonized standards UNE EN 61010 1 96 Authorised Signatory CE CONFORMITY DECLARATION Madrid Juny 5 of 2001 UNITRONICS SA Pza Espana 18 Edit Torre de Madrid PI 9 28008 MADRID de la Fuente Corporate seal 103 liz APPENDIX B CONTROL SOFTWARE INSTALLATION APPENDIX B CONTROL SOFTWARE INSTALLATION The documentation referred to the control software installation manual UMIB can be found in file SETUP RT ING 104 uni ics sz APPENDIX C OTHER UNITRONICS EQUIPMENT APPENDIX C OTHER UNITRONICS EQUIPMENT UNITRONICS offers a set of tools oriented towards the predictive maintenance of electrical installations these using common hardware and specific software applications for the performance of different measurement functions All the software applications included in this set have been developed by UNITRONICS with a view to facilitating maintenance tasks In this respect the different programmes completely guide the operator without the need for a high level of computer cognisance Subsequently during the results and trends analysis phase the software itself occasionally provides directly an initial basic evaluation of the tests performed At the same time and given the importance of correct data management all the measurements carried out using the set of tools
32. 5 40 Notebook for test analysis events The information is saved within the test itself as a result of which it cannot be accessed from any editor but only from the programme itself When the analysis of a machine on which an observation has been written during a previous test or analysis is selected the observations incorporated at that time may be viewed by clicking on the Observations button 67 liz 5 SOFTWARE DESCRIPTION 5 7 Report printing The button located on the main menu may be used to print test reports While this process is under way the programme displays a message asking the operator to wait WAIT A MOMENT PLEASE PRINTING Figure 5 41 Message indicating that a report is being printed A report is made up of three or four pages depending on whether the winding does or does not have a regulator adjuster or on whether the number of measured positions for a winding with regulator adjuster is greater than 6 The four next sheets show the appearance of a report The Ist page shows the identification and technical data for the transformer on which the test has been performed In its upper part the 2nd page includes observations made during the test or analysis The middle section includes a brief summary of the measurements carried out consisting of the mode of application between high and low voltage or between high and tertiary and in the case that the selected winding
33. 7 PC communications connector 8 Electronic fuse rearm pushbutton This should be operated to restart the unit when the STATUS LED changes to red 9 Mains input connection This includes a fuse holder and a spare fuse 10 Equipment power switch This should be operated to connect the equipment to the mains when indicated by the PC software 11 Nameplate with equipment serial number and characteristics The UMIB is complemented with two cable hoses ending in four cables blue yellow red and black with their respective clamps These are different in two details the type of connector and the colour of the terminal clamps The cable hose with female connectors at one end and red clamps at the other is used to connect the high voltage winding The hose with the male connector and black clamps is used for connection of the low voltage winding see Figures 3 5 and 3 6 The first will be in charge of providing the test voltage and the second of acquiring the result at the output The rest of the indicators warning messages appear on the computer screen and will be described in detail in chapter 5 Software description E liz 3 UMIB EQUIPMENT 3 4 Unit protections The equipment incorporates protections against overvoltage conditions based on varistors at all the measurement terminals It also has two overcurrent protections in the high voltage circuit These protections prevent the test voltage from being correctly generated when th
34. ANT TO CONTINUE eo r3 m 0 Figure 5 21 Message indicating short circuit The first thing to do to continue with the test is to verify the wiring then the protection is reset using the rearm pushbutton on the rear panel 8 in figure 3 12 and finally the test is continued by clicking on OK When the transformer no load current is very high I gt 1 5 A and if the test button is kept connected for some time the unit thermal protections may trigger In this case there would be no voltage in the high voltage winding and the PC would display the message Incorrect measure Revise the wiring and the test button To continue with the measurements exit the test turn off the unit and let it cool down for some 5 minutes If this message continues to appear there is a problem in the unit that will need to be looked at by the specialist technical service see section 7 TROUBLESHOOTING 255 liz 5 SOFTWARE DESCRIPTION ERROR MESSAGE IT HASN T BEEN POSIBLE TO GENERATE VOLTAGE TEST SWITCH OFF BUTTON TEST AND THE MEASUREMENT UNIT WAIT FOR SOME MINUTES UNTIL UNIT GET COLD vl 0 Figure 5 22 Message measurement incorrect The measurement will commence when the button is operated and on completion of measurement for each phase the graph showing the current through the high voltage winding and the voltage in the high and low tertiary windings will be plotted depending on the
35. E 50 24 20 MoTettiay d Tertiary Transfomer 44 Singlephase COMPOUND VOLTAGE Kv 0000 CURRENT a 0000 Autotransformer Three phase 4 v ad 2n HANDLING N REGULATION MANUFACTURING 1333 TYPE Load 4d POWER MYA 050 M Switch MANUFACTURER Below cover NOMINAL Vee z oo erm i STEP voy 500 00 a in 538 NOMINAL TAP 1 CENTRAL TAPS N2 El X xi mei xi xi BACK CANCEL PRINT Figure 5 11 Screen showing the technical data for the transformer being tested The right hand side of the screen allows other winding parameters to be input such as the following COMPOUND VOLTAGE KV Rated voltage between two phases of the winding In the case of delta connections it coincides with the simple or phase voltage For greater clarity refer to Figure 5 12 UO 7 wo compound LC Y ad S d cu weu NS simple Vo 5M u m Zo Wo Figure 5 12 Drawing showing the difference between simple and compound voltage ATs liz 5 SOFTWARE DESCRIPTION CURRENT A Rated current of the winding There is also a list type selection box indicating whether the winding has a regulator an adjusting device or neither If the winding does have a regulator adjuster there will be an additional set of parameters TYPE Regulator adjuster model This is defined on the nameplate MANUFACTURER Name of the manufacturer of the regulator adjus
36. E KEPE NE MU XRRS RP KE sssusa se UNE ER TAREA ERE ERR RSE RARE 94 8 4 Authorised representatives and technical services eese esee eere eene eee tnue 97 9 SPECIFICATIONS T asis 98 OL D EEA wea 98 9 2 Mechanical c ccsscscssesssesovessssoasssscesansdsesssoed scnssscsdeosescdsunsesaccessboudsteassescesonssbseeomssdcoseooeaseos 100 9 3 Measurement scales ccscsscesccssssscsssesssccssssescecsssssesecsscsscssessncesesssseneesessssssessocssesseees 101 Pluie 102 9 5 Additional specifications eee eere eese enses eene een ene ta s tn enne tn stesse natns e tassa ense ta ao 102 APPENDIX A CE CONFORMITY DECLARATION eeeee cette ee eren eee tn nnn 103 APPENDIX B CONTROL SOFTWARE INSTALLATION e eeeeeeee eee 103 lsc INDEX APPENDIX C OTHER UNITRONICS EQUIPMENT sccssssssssssssssssssssssssesssssessesees 105 C 1 Available applications cscsccssccsssccscsssssssescssesscssscsneesesessensesesssessessscsscsssseneesesees 106 APPENDIX D FACTORY MEASUREMENT eere eee enne en enero neenon enean enean 111 Isid 111 bM ouium snit 111 APPENDIX E GLOSSARY aa 113 a PROLOGUE PROLOGUE The instructions manual contains all the information required to start up and maintain the UMIB measuring system The
37. Humidity 5 C to 35 C 10 to 80 5C to 75 C 5 to 80 99 9 SPECIFICATIONS 9 2 Mechanical a Table 9 2 Characteristics of the unit 100 Was 9 3 Measurement scales Measurement of Voltage V1 Measurement of Voltage V2 Measurement of Current I1 130 41 130 9 SPECIFICATIONS t0 2 96 41 13 41 t0 2 96 82 13 4 1 13 0 2 96 26 4 1 1 3 4 1 0 2 96 8 2 1 3 0 41 1 3 20 2 76 2 6 0 41 0 13 0 41 0 2 0 82 0 041 0 13 3 2 1 0 32 1 1 10 0 320 0 1 0 32 1 3 2 0 100 0 032 0 1 1 1 0 032 0 01 0 032 1 0 32 0 010 0 0032 0 01 1 0 10 Table 9 3 Unit specifications 101 lion 9 SPECIFICATIONS 9 4 Protections Varistors to prevent overvoltage conditions Circuit protecting against short circuiting in the high voltage winding The equipment is also fitted with a thermal PTC based protection These thermal protections mean that the equipment cannot be used continuously when delivering the maximum power It is recommended that the unit be left without generating output voltage for at least 1 minute every 7 minutes of operation when working with maximum current If these operating conditions are not met the safety of the equipment may be jeopardised 9 5 Additional specifications Other characteristics Power on indicator
38. N DIL HANDLING N 0 REGULATION MANUFACTURING 1999 TYPE Load 4 POWER MVA 0 500 Switch AEFI MANUFACTURER Below cover OMINAL Vee y E ae E TAPS N 1 STEPI qued 90 i yn des NT I NOMINAL TAP 1 1 CENTRAL TAPS N2 1 1 AE ARAS s X 8 yl Figure 5 32 Screen with technical data on the transformer being analysed 61 liz 5 SOFTWARE DESCRIPTION E On all screens in which the button appears it is possible to print the current screen or the complete test report Figure 5 33 For more information on report printing refer to section 5 7 PRINTING C Print Report X vj Figure 5 33 Selection box for screen or report printing If any of the data influencing the calculation of the transformation ratio are modified then when a change is made to another screen the programme will issue a warning reminding the operator that data have been modified and that this may have an impact on certain measurements Figure 5 34 NOTICE ADVISE A xi Important Data has been modified lt can produce the lost of the measurement configuration and its results Do you want to continue e EN Figure 5 34 Confirmation to continue analysis with key data having been modified The most likely thing will be that the operator does not wish to continue in which case when he clicks on NO a screen will appear informing him that if he does not wish t
39. ONICS obligation extends to the repair or replacement of defective products within the guarantee period The guarantee covers the equipment but is not applicable to accessories such as cables and extension leads In order to benefit from this guarantee the purchaser must inform UNITRONICS or the closest representative see section 8 of the defect prior to expiry of the guarantee period This guarantee does not cover any defects faults or damage caused by misuse or inadequate maintenance by the purchaser or by non authorised modifications or use other than as established in the specifications The guarantee does not cover faults caused by natural disasters including fire flood earthquakes etc Any opening of the equipment modification or attempt to repair performed without authorisation shall render this guarantee invalid and automatically cancelled This guarantee covers only the original purchaser of the product and may not be transferred in the event of resale Guarantee extensions and maintenance contracts are available at both hardware and software level Please ask your nearest representative s sales department for information see chapter 8 luso ooo INTRODUCTION 1 INTRODUCTION Knowledge of the status of transformers is a complex issue For this purpose different techniques have been developed allowing in depth studies to be performed on the different parts into which transformers may be divided One of the methods
40. POWER VAR _ _APPARENT POWER VA PHASE V1 11 y 110 120 130 140 150 cSAGEN WIN EnsayosTRPABB _62926 RDTTRPABB__62926 0 Se Figure 5 44 Third page of report Te liz 5 SOFTWARE DESCRIPTION 1 4980 1 5170 0 02 1 5830 0 10 1 5520 0 05 1 5690 0 16 1 5710 0 03 1 5900 0 04 1 5910 0 02 1 6080 0 14 1 6090 0 08 1 6290 0 09 1 6810 0 04 1 6510 001 1 6530 0 12 1 6740 0 11 1 6930 0 06 3 08 1 8110 0 03 1 8130 1 8350 0 11 1 8370 1 8620 0 08 c SAGEN_WIN Ensayos TRPABB 62926 RDTTRPABB 62926 0 Ss Figure 5 45 Fourth page of report 73 a 5 SOFTWARE DESCRIPTION 5 8 About Clicking on this button will cause a window to appear Figure 5 46 including the following Dataon the license Dataon the programme version TRANSFORMER TURNS RATIO http www unitronics electric com Program developed by unitronics electric in collaboration with Iberdrola License Number 0 i ES A December 11th 2007 Figure 5 46 Screen showing license and programme version data This cover page also appears whenever the programme is executed 74 lio 5 SOFTWARE DESCRIPTION 5 9 Exiting This button a is used to end the application The programme will always check whether any data have been modified during the test or analysis If the test has not been completed the programme will alway
41. RATED BY THE PROGRAMME FOR EACH TEST The identification window contains three buttons X OK X CANCEL and LA NEXT The CANCEL button returns to the main screen without validating any possible changes made in the fields of the window The OK and NEXT buttons basically perform the same function with the difference that OK validates the changes made in the window and returns to the main panel while NEXT also validates the data but leads to the next process to be carried out The functionality of these buttons will be the same regardless of the window in which they appear 5 3 2 Transformer technical data This screen Figure 5 12 is used to input the technical data on the transformer to be tested The upper part of the screen shows the name of the file in which the test will be stored along with the data identifying the transformer and input on the previous screen All of these are shown on a yellow background this indicating that the data are purely for informative purposes and cannot be modified 45 liz 5 SOFTWARE DESCRIPTION TYPE The type of transformer being used This information is shown on the transformer nameplate Transformer Autotransformer Indicates whether the transformer in question is actually a transformer or an autotransformer No Tertiary Tertiary Indicates whether the transformer does or does not have a tertiary winding Single phase Three phase Indicates whether the transformer
42. Table 7 1 The numbers in brackets refer to Figure 3 1 section 3 3 To contact an authorised technical service or return the equipment see section 8 88 los 8 TECHNICAL SUPPORT TECHNICAL SUPPORT When contacting our technical service please provide the following information Model of equipment Serial number shown on rear panel Description of fault Name and telephone number of the operator in charge of equipment and of a person responsible for it 89 8 TECHNICAL SUPPORT 8 1 Return for calibration repair If after revising chapter 7 Troubleshooting it is concluded that the equipment should be returned for calibration repair it is essential that the following instructions be adhered to 1 Make a copy of the following pages fill them in and attach to equipment 2 Pack the equipment or accessories using an appropriate transport container When returning equipment for repair it is best to return the entire system i e measuring unit PC and wiring In any case contact the technical service 90 hase 8 TECHNICAL SUPPORT CLIENT DATA COMPANY Client number Address City C Province Contact person e mail Telephone EQUIPMENT DATA Serial No of UM1B Date of purchase Date of last adjustment calibration Date of last check repair Cause of return Calibration of equipment I would like a calibration certificate Repair of equipment Fill in only
43. V 2v 2w 2u Te 180 R2 Ww 1V 1W 2w Qu42v de R3 U 1U 1V 2w Qu42v 3 V RI Dz4 Dzn4 v 1V 1W 2u 2v 2w Y e 0 R2 Ww 1W 1U 2v 2w 2u AN R3 U 1U 1V 2u Qv42w 2v RI Dz6 Dzn6 V 1V 1W 2v 2w 2u un 180 R2 Ww 1W 1U 2w 2u 2v a R3 U 1W 1U 2u Qv42w RI Dz8 Dzn8 V 1U 1V 2v 2w 2u ENS 0 R2 Ww 1V 1W 2w Qu42v il R3 U 1U 1V 2w Qu42v m RI Dz10 Dzn10 V 1V 1W 2u 2v 2w EN 180 R2 Ww 1W 1U 2v Qw42u R3 For these groups it would be possible to be obtained the simple relations supposing that the problems are caused by the windings of high voltage and that both windings of loss of each column are similar Nevertheless with three simple measures it is not possible to obtain the relations of the 6 windings of low voltage reason why these equations are not introduced in the user software In spite of not being including in the user software they are possible to be seen in the following table Relaciones medidas Relaciones simples C 2 RP R2 e R3 5 RI R2 R2 R3 R3 RI _ 2 Nu Nw Nu Nv 3 Nu NV Nw Nue E 2 R1 R2 4 R3 n js ye y gu 2 Ny Nut Nv Nw meo C Z 3 Nu Nv Nw 4 R1 2 R2 R3 3 Nu Nv Nw R1 4 R2 2 R3 In the user software one is going away to introduce a factor 3 for the three phases that is the turn out to apply the previous equations supposing that R1 R2 R3 R that is the most habitua
44. a list If the location in question is not already included on the list it may be input by selecting the option other TECHNICAL LOCATION The specific location of the machine at the facility e g Pump house is selected from a list If the location in question is not already included on the list it may be input by selecting the option other USER The name of the operator performing the test is selected from a list If the name of the operator in question is not already included on the list it may be input by selecting the option other INSTRUMENT UMIB Serial number of the UM1B used for performance of the test DATE DD MM YY Date of the test The programme checks that this date is correct Me liz 5 SOFTWARE DESCRIPTION In all the fields in which new elements may be added to a list they may also be deleted by locating the cursor on the item to be removed and clicking with the right hand mouse button Figure 5 10 All these data are obligatory inasmuch as they must all be input for the programme to continue DELETE r x Do you want to delete this Manufacturer Figure 5 10 Confirmation message for deletion of manufacturer s name The fields MANUFACTURING NUMBER MANUFACTURER AND MACHINE TYPE are part of a test search device in other words if a test exists that has already been performed on the machine in question and if any of these fields are filled in then
45. achine conditions at the moment of measuring e Measurement repeatability This guarantees that readings made over time have been obtained in the same way and with the same degree of accuracy and tolerances This allows their evolution to be studied Automatic organised results storage Simplifying the handling of the information obtained e Updateable system Developed such that new software developments may be implemented as they emerge using the same hardware elements e Acquisition of key parameters Automatic calculation of certain parameters and graphics for machine status diagnosis e Non destructive testing With appropriate handling there is no risk of damage to the winding during testing a 2 DESCRIPTION OF MEASUREMENT METHOD 2 2 Test characteristics It is necessary to define the test to be performed with the following objectives To ensure that the test is easy to perform if possible by suitably trained personnel at the installation and without the need for specialists to be present e That there be no risk for the equipment to be tested That there not be excessive unavailability if possible none e That the data and results obtained provide at least some information for immediate interpretation by the operator performing the test e That the overall data obtained may be stored on computer media for straightforward dispatch for more detailed study by specialists who will obtain the maximum information
46. age winding PHASE V1 I1 and the phase mismatch between the voltage in both windings PHASE V1 V2 If the theoretical transformation ratio TTR shows the value Inf it means that a low voltage equal to zero has been input on the Technical data screen as a result of which this value should be modified If the value NaN appears not only the low voltage but also the high voltage will be equal to zero In the lower right hand corner of the voltage graph a checkbox control appears making it possible to select whether or not the high and low voltage and high current signals 53 liz 5 SOFTWARE DESCRIPTION are to be displayed If these signals are not displayed the duration of the measurement will decrease considerably thus making measurement more agile The default option is for the signals to be displayed In this section and if the winding has a regulator adjuster the NEXT and PREVIOUS buttons change their function Instead of moving forwards or backwards to other screens they make the regulator move forwards backwards to another position without the need for these positions to be measured Whenever the regulator adjuster is in the first or last position the PREVIOUS or NEXT button respectively recover their normal functions To initiate measurement click on the xy button If the winding has a regulator adjuster a screen will appear showing the position in which the regulator should be placed to initiate the mea
47. ake overhaul or repairs or ultimately undertake replacement In other words the aim is not only to limit unnecessary actions but also complete the level of information on the actual status of the equipment such that adequate decisions may be taken Predictive maintenance is applied successfully and with the greatest frequency to major items of equipment subjected to complex ageing and degradation phenomena and affected by a large number of variables In most cases there are no formulae allowing the status of the equipment to be estimated as a result of which it is necessary to carry out tests luso INTRODUCTION in order to obtain the values of different significant parameters and on this basis make an interpretation Consequently start up goes hand in hand with the definition and performance of tests and with the interpretation of the results For the former it is necessary to have in depth insight into the equipment and the techniques involved while for the latter specialist personnel is required a 2 DESCRIPTION OF MEASUREMENT METHOD 2 DESCRIPTION OF MEASUREMENT METHOD 2 1 Philosophy of the method The UMIB is an automatic system designed to determine the transformation ratio of transformers It is designed as a predictive maintenance system and as such meets the following requirements Automatic measurement system In order to avoid errors due to acquisition handling and correction times resulting from ambient and m
48. application selected in configuring the measurement Likewise all the data obtained for each phase will be displayed in the corresponding row If the measurement has been correct the results obtained for the transformation SinTR will appear in green If on the other hand the result obtained is greater than 4000 unit measuring limit both the secondary voltage section V2 and the calculated transformation ratio SinTR will be shown by means of hyphens m ETPRT TRANSFORMER TURNS RATIO MEASUREMENT High Voltage Current 0 01 0 00 0 01 35 40 45 50 55 60 65 70 75 80 Time mSec V1 V2 CONNECTION GROUP Yznil 6 12 0 00 310A ZA 6 12 33 40 45 50 S55 60 65 70 75 80 Time mSec V Representation ES v2 ii smrR TTR PH 1 11 PH 1 V2 2 141 Foo 82 55 EN 13 68 0 63 PHASE U PHASE V_ 117 64 2139 li 0 0002 8252 8248 1359 063 PHASE W 2 131 0 0002 E 82 53 Ji 82 48 j 21 95 Figure 5 23 Display of measurement results for a regulator adjuster position 56 liz 5 SOFTWARE DESCRIPTION Once measurement of the three phases has been completed the system will request that the test button be turned off Figure 5 24 and another position may be measured E T P TRANSFORMER TURNS RATIO SWITCH OFF THE TEST BUTTON Figure 5 24 Message requesting that the test button be
49. apter 9 Specifications and that the socket is grounded Connection of power to PC The PC feed cable is taken to a mains socket Check that the voltage is within the operating margins of the PC Once the different parts of the equipment have been connected the PC is turned on and the control software executed As from this moment the instructions appearing on the PC screen should be adhered to Thus when this software so dictates the unit 10 will be turned on or the Test pushbutton 6 operated THE UM1B UNIT SHOULD NOT BE TURNED ON OR THE TEST PUSHBUTTON OPERATED UNTIL INDICATED BY THE CONTROL SOFTWARE 239 liz 4 PREPARATORY STEPS PRIOR TO USE The necessary operations should be performed with the cable hoses and clamps leading to the equipment being tested as requested by the programme Special care should be taken when connecting each of the cable hose clamps by clamp and cable colour to the phases indicated by the programme 33 liz 4 PREPARATORY STEPS PRIOR TO USE 4 3 Equipment disconnection ATTENTION The cables should be handled with great care High voltage alternating current is present for which reason the safety measures habitual with installations using this type of voltage should be adopted The UMIB unit should be turned off when indicated bv the control software on completion of the measurements All handling of the cables should be performed only when the Test pushbutton 6 is n
50. are encompassed within a common database such that recovering the tests performed on any machine is a simple matter All the hardware and the applications have been carried out by the UNITRONICS Projects Department this providing a guaranteed maintenance service During the development of all the systems actual tests are performed at the same installations in which the equipment will subsequently operate thus ensuring suitable operation and leaving open the possibility for future modifications based on the experience of the users of our equipment The availability of different applications on one same support provides certain advantages over traditional instrumentation the following being especially significant Unification of measurement systems Common database for all tests Hardware elements common to all systems Reduction of instrumentation costs Easy guided operation Instructions and menus in English Straightforward maintenance and possibility for modifications Graphic results display Automatic preliminary evaluation of results Trend analysis Simplification of calculation 105 uni ics Miser APPENDIX C OTHER UNITRONICS EQUIPMENT C 1 Available applications EDAIII analysis of motor and alternator insulations Figure C 1 Figure C 1 Photograph of EDAIII equipment ETP complete transformer testing UMIB Transformer Turns Ratio Meter Figure C 2 Figure C 2 Photo
51. ated from the graph in the first two points the V phase shows a non linearity error the transformation ratios measured differ from the theoretical values as a result of which it may easily be deduced that the transformer was affected by problems 69 liz 5 SOFTWARE DESCRIPTION SITE NAME TECHNICAL SITE MACHINE TYPE ransformador de Potencia MANUFACTURER Func PRUEBAS MADE BY REFRIGERATION Three phase Single phase POWER MVA Autotransformer NOM Vee 9o VOLTAGE KV CURRENT A CONNECTION GROUP Tap Changer Tap Changer Tap Changer Selector Selector Selector No Tap Changer No Tap Changer F No Tap changer REGULATION Load Load Load Switch Switch Switch Below cover Below cover Below cover 9 UCGR 650 1200 1 MANUFACTURER ABB bp Ss Bb LE DO A amp i Azl mu d v 1 J bp 7 1 HANDLING N SWITCH TYPE NOMINAL TAP CENTRAL TAPS N STEP V c SAGEN_WIN Ensayos TRPABB__62926 RDTTRPABB__62926 0 1 Figure 5 42 First page of report 70 In the 2 tap changers case FIXED TAP CHANGER High Low WINDINGS Tertiary HV LV HV Tertiary FIXED TAP C c SAGEN_WIN Ensayos TRPABB_ 62926 RDTTRPABB 62926 0 2 Figure 5 43 Second page of report Me 5 SOFTWARE DESCRIPTION liz 5 SOFTWARE DESCRIPTION NOMINAL TAP DATA EXCITATION CURRENT A _ ACTIVE POWER W REACTIVE
52. connector endings for communications CRS23200 between the PC and the unit The cable must be shielded Figure 3 4 Photograph of serial communications cable 8 metre cable hose with male connectors and black clamps at the ends UM1M8M00 Each cable in the hose is a different colour blue yellow red and black Figure 3 5 Photograph of cable hose for connection of low voltage winding male connector 2 liz 3 UMIB EQUIPMENT 8 metre cable hose with female connectors and red clamps at the ends UMIMSH00 Each cable in the hose is a different colour blue yellow red and black Figure 3 6 Photograph of connection cable hose for high voltage winding female connector UMIP12M00 12 metre extension for connection hose with male connector Figure 3 7 Photograph of high voltage cable hose extension male connector 22 liz 3 UMIB EQUIPMENT UMIP12H00 12 metre extension for connection cable hose with female connector Figure 3 8 Photograph of low voltage cable hose extension female connector BCL00 Cable transport bag Figure 3 9 Photograph of cable transport bag 23 liz 3 UMIB EQUIPMENT Power socket with four power supply sockets protected against voltage transients differential currents and overcurrent conditions A voltmeter RAFVDMO0 is incorporated for the direct verification of the mains voltage along with terminals for ground connections Figure 3 10 Photog
53. correctly selected The connections have not been made properly An excessive unbalance between phases exists when we don t have the neutral accessible The equipment is faulty The instrument is not receiving power Serial cable PC or unit deteriorated The test button is not pressed Serial cable PC or unit deteriorated 87 Check the connections and repeat the measurement Send the equipment to an authorised technical service Check the group selected and repeat the measurement Check the connections and repeat the measurement There could be a problem in the transformer Try to perform the measurement in single phase mode Send the equipment to an authorised technical service Plug in and turn on the box Contact an authorised technical service Press the test button Contact an authorised technical service liz 7 TROUBLESHOOTING SYMPTOM PROBLEM SOLUTION Turn off the unit and allow to cool for 10 minutes Repeat The message Impossible to the measurement If the generate test voltage Turn problem persists contact an off test button and unit and authorised technical service allow to cool for few minutes appears on screen Unit overheating Serial cable PC or unit Contact an authorised deteriorated technical service The security key is not in the Connect the key in LPTI parallel port port The option Test does not appear enabled Contact the technical service
54. e current passing through the high voltage winding of the transformer being tested is higher than the unit safety limits 3 4 1 Electronic fuse This fuse opens the measurement loop whenever a short circuit occurs at the measuring clamps or when the transformer start up peak exceeds 2 0 A with phase close to 0 When the electronic fuse detects a short circuit generation of the test voltage is inhibited and the status LED changes to red For the UMIB to be able to reinitiate measurement the short circuit condition must be removed and the fuse reset using the rearm pushbutton on the rear panel Once the fuse has been reset the STATUS LED changes back to green and the test voltage may be generated once again 3 4 2 Thermal protection When the unit delivers a current close to maximum 2 A for considerably longer than required for a Normal measurement to be made internal heating occurs This heating may cause an increase in the measurement error and possibly damage certain of the measurement circuits In order to avoid these problems PTC resistances are incorporated which open when the internal temperature close to the isolation transformer is very high When these resistances open the test voltage will not be present at the measuring clamps The effect on the measurement is similar to that of the test pushbutton not being pressed or the STATUS LED being lit red For the UM1B to continue operating the uni
55. e pairs are indeed connected for example place one of the test points at pin 1 and the other at pin2 the multimeter should indicate continuity Repeat the process for each of the pairs Then check that the pairs of pins are not short circuited Place the test point at the pair of pins 1 2 and the other at the other pairs for example at 3 4 The multimeter should indicate discontinuity Repeat the process for the other pairs 3 Check for continuity between connector and pins To accomplish this one of the test points will be placed at one of the aforementioned pairs of pins for example 1 2 and the other at one of the clamps for example the one for the red cable The multimeter should indicate continuity This process should be repeated checking the connections in accordance with the following table 1st test point 2nd test point 7 pin connector Clamp Pins 1 2 Red cable clamps phase U Pins 3 4 Yellow cable clamp phase V Pins 5 6 Blue cable clamp phase W Pins 7 8 Black cable clamp neutral Table 6 1 Check for test cable hose continuity 84 Tu 7 TROUBLESHOOTING SYMPTOM PROBLEM The power switch 10 is turned on but the power indicator 3 does not light up The status LED 4 is lit in red During the test the Test button 6 is pressed but does not light up The power cable is not properly connected The LED has blown The fuse has blown The equipment is faulty An overc
56. e purchased see chapter 8 The same applies to the cable and unit connectors Special care should be taken with the PC serial connection cable since it is ultimately in control of the unit 79 T 6 EQUIPMENT MAINTENANCE 6 3 Fuse replacement ATTENTION Before changing the fuse ALWAYS unplug the feed cable Always use fuses of the type and value specified see chapter 9 Specifications In order to avoid power voltage peaks that might damage the equipment the UMIB incorporates a fuse located in the lower part of the mains connector 9 The fuse holder may be slid outwards by hand or using a small screwdriver Inside is the operating fuse with a spare in an adjacent compartment The very arrangement of the fuse holder makes it necessary to disconnect the power cable Nevertheless great care should be taken and the cables should be disconnected from the equipment being tested Also the UMIB unit should be moved away from the equipment being tested After the aforementioned safety measures have been taken the fuse may be replaced proceeding as follows Turn off the switch on the rear panel Disconnect the cables from the equipment being tested Disconnect the feed cable Open the fuse holder Remove the blown fuse Insert the spare fuse NA Un fb Y N m Close the fuse holder 80 6 EQUIPMENT MAINTENANCE 6 4 Storage and transport Changes in the location of the equipment especially if stored
57. e units used in the temperature Fahrenheit F or centigrade C Topology Select the nomenclature of the connection be it A B C or U V W Once the system is configured press OK button to accept chosen configuration or CANCEL if you choose to refuse it Em liz 5 SOFTWARE DESCRIPTION 5 3 Test performance Measurements made with the UMIB are OFF LINE Consequently prior to commencing the test CHECK THAT THE SYSTEM IS FREE FROM VOLTAGE LOAD Prior to commencing the test the UM1B should already be connected to the PC by the serial cable with the Test button not pressed but THE UNIT SHOULD NOT BE TURNED ON UNTIL REQUESTED BY THE SOFTWARE No operation should be performed on the unit until the programme has checked that everything is correct before the test The PC screen saver should be deactivated and the low consumption mode disabled before beginning a test It is recommended that no software application be active during test evolution To perform a test click on the Test button on the main menu A programme initialisation will occur possibly lasting several seconds during which the message shown in Figure 5 4 will appear UPDATING REGISTER Figure 5 4 Test initialisation message 39 hirens 5 SOFTWARE DESCRIPTION This button is used to begin a new test regardless of the status of programme execution If a test is already under way the system asks for confirma
58. en the computer and the UMIB is correctly connected A screen appears showing instructions for connection of the unit Figure 5 17 Any errors in the initiation protocol are identified by means of luminous signals if the LED located to the left of the text flashes it indicates that the condition is not met Likewise it is necessary to connect the equipment to a grounded power source since otherwise the equipment may be damaged or the measures made may be incorrect Also indicated are the connections to be carried out between the unit and the transformer identifying which cables should be connected to each phase of the winding by the colour of the clamps and of the cables in the hoses 5 liz 5 SOFTWARE DESCRIPTION Dd0 GROUP HIGH VOLTAGE CONNECTIONS Be sure the machine under test has no voltage Connect the cable from PC to UM 1B unit Connect the cables and switch on the UM 1B unit RED wire RED clip to the HV U Wire RED clip tothe A A BLUE wire RED clip tothe W LV RED wire BLACK clip tothe u wire BLACK clip tothe A BLUE wire BLACK clip tothe W The system supply must have ground connection Otherwise the unit may be damaged or the test not correct x Uv BACK CANCEL DK Figure 5 17 Equipment connection protocol ATTENTION For correct operation of the equipment it is very important that all the conditions indicated in this window are met
59. enance organisation management 15 hers APPENDIX E GLOSSARY Mass Reference point of an electrical circuit Modification Partial design change to an Item Neutral Point of a symmetrical system of voltages normally at zero potential Non destructive test Test performed on a machine applying a lower stress than the maximum recommended Part Parts constituting a component gaskets screws Permissible condition Permissible condition of an item for a specific use This may in no case below that required by the official and technical regulations for such use Equivalent to the term Permissible State Phase Each of the single phase currents making up a multiple phase system This term usually encompasses conductors coils etc Phase winding Set of turns forming a multiple phase winding Permissible Status Permissible condition of an item for a specific use This may in no case below that required by the official and technical regulations for such use Equivalent to the term Permissible Condition Predictive Maintenance Preventive maintenance based on knowledge of the status of an Item due to the periodic or continuous measurement of a significant parameter The maintenance intervention is conditioned by the early detection of symptoms of failure Preventive Maintenance Maintenance consisting of the performance of certain repairs or changes to components or parts on the basis of time intervals or certain previously es
60. ent THE SEQUENCE DESCRIBED BELOW SHOULD ALWAYS BE ADHERED TO To carry out a test the measuring unit and control computer should be located close to the equipment to be analysed as indicated in Figure 4 1 To start up the equipment adhere to the following instructions in the order shown the different elements on the panels in Figure 3 1 are referred to in brackets Rear View of Instruments UM1B serial High Voltage Windings TESTED EQUIPMENT Low Voltage Windings Figure 4 1 Explanatory drawing of connection of elements for testing 31 liz 4 PREPARATORY STEPS PRIOR TO USE Connection of PC to UMIB This is accomplished by means of the RS 232 serial cable provided taking into account the notches on either side of the connector 7 Safety check The equipment to be measured should be checked to ensure that it is duly isolated from the external connection lines and fully discharged Connection of cable hoses to UMIB The cables should first be connected to the unit 1 and 2 and the clamps should then be left close to the equipment to be measured for subsequent connection in the sequence indicated by the software Max V 130 Vac Max cur 2 Aac Installation CAT II Connection of UM1B equipment to mains This connection is made by taking the power cable from 9 to a mains socket A check should be made to ensure that the voltage is within the operating limits see ch
61. f an Item to perform its function at a given moment or for a given period of time under defined conditions and at a defined level of performance Autotransformer Device capable of changing the level of magnitude between input and output similarly to a transformer The difference is that there is a single coil with an intermediate tap as a result of which there is a common part between the coils Breakage Fault causing an item to become unavailable Breakdown Loss of capacity of an Item to perform its specific function Equivalent to the term failure Bridge Resistance of low value used to form short circuits Capacity Physical property allowing electrical loads to be stored between two insulated conductors subjected to different potential separated by a dielectric element Chassis Set of items providing physical support for a system or item of equipment 113 APPENDIX E GLOSSARY Cleaning Elimination or reduction of dirt slag waste material rust or incrustations such that an Item may operate under optimum conditions of use Coil Assembly with a conducting section in charge of inductive magnetic coupling Component Unit belonging to an assembly and not generally operational by itself It is made up of parts turbine rotor bearing engine cylinder Conductor Material allowing an electrical current to pass continuously when subjected to a difference in potential Corrective Maintenance Maintenance perfor
62. graph of UMIB equipment 106 uni ics sz APPENDIX C OTHER UNITRONICS EQUIPMENT UM2B Recovery Voltage Meter Figure C 3 Figure C 3 Photograph of UM2B equipment UM3B Transformer Winding Resistance Meter Figure C 4 Figure C 4 Photograph of UM3B equipment 107 uni ics le APPENDIX C OTHER UNITRONICS EQUIPMENT UMSB Short Circuit Impedance Meter Figure C 5 Figure C 5 Photograph of UM5B equipment RAFVDM Power Socket Supply earth detecting Figure C 6 Figure C 6 Photograph of RAFVDM equipment 108 uni ics sse APPENDIX C OTHER UNITRONICS EQUIPMENT EDA DIAGHELP Expert software of diagnosis for rotating machines Figure C 7 i EDA DiagHelp _ 18 xl rie D WIN Ensayos USAWONGENERTO0a1Ta WeeE DAMOMGENERTONAI180 JN D FETS glad 0 a Identification icture Advanced Degradation Trace fore Unitronics S A U L Figure C 7 Screen of the application Diag Help EDA TRENDS Expert software of trends for rotating machines Figure C 8 yt EDA TRENDS Unitronics S A U 1 Figure C 8 Screen of the application Trends 109 electric APPENDIX C OTHER UNITRONICS EQUIPMENT ETP_DIAGHELP Expert software of diagnosis for transformers Figure C 9 ETP DIAGHELP Xx jedT DRTRPLAYBO5822 3 MedADBTRDCOTRA20864 18 MedIDD TRDCOTRA20864 13 Dia g H e Site Name UNITRONICS Manufacturer
63. hapter 8 and Appendix C gt 35 lio 5 SOFTWARE DESCRIPTION In this case click on the tab entitled POWER TRAFO or MEASURING TRAFO or on the corresponding icon in the upper part of the screen Then click on the icon corresponding to the UMIB launching the programme Figure 5 2 This offers two basic operating options Test performance Test Results analysis Analysis m E T P TRANSFORMER TURNS RATIO UM1B Main Menu Test Analysis Config Assistant He Hepor About Exit Analysis Figure 5 2 Main UMIB programme screen To perform the test a series of machine identifying data is required these to be provided by the operator Subsequently a results analysis may be performed based on the voltages measured and on a series of calculations A series of utilities is also provided such as a file copy assistant and a notebook for the introduction of notes on test or analysis events 36 V electric 5 SOFTWARE DESCRIPTION 5 2 Hardware dongle Configuration menu The first step to carry out before executing the application is to place the security key dongle supplied in the parallel port of the PC LPT1 In the case of not connecting it the software will only allow you to carry out analysis of test already performed When you connect it you will be able to carry out test For system configuration click on Config button Sucessively the following menu will appear F
64. he change to take effect he should click on CANCEL Figure 5 35 62 liz 5 SOFTWARE DESCRIPTION NOTICE ADVISE Figure 5 35 Recommendationfor changes not to take effect 5 4 3 Results tables This screen shows the results of the measurements The screen may be of two different types depending on whether the selected winding does or does not have a regulator adjuster One thing that both screens have in common is that the upper part shows the file that is being analysed with the type of measurement performed identified below In the first case winding with regulator adjuster a screen such as the one shown in Figure 5 36 will appear As may be appreciated it is similar to a spreadsheet For each regulator adjuster position both the theoretical transformation ratio and the transformation ratio between each phase will be shown 5 ETPRT TURN RATIO MEASUREMENTS FILE eASAGEN WINSEnsayosNTRPGENER82880NRDTTRPGENER82880 0 wnbNos HV LV FIXED TAPCHANGER TERTIARY FIEDTAP 2 i 1 1w vw ERROR ERROR S T R MEAS ERROR Jd 033 29570 0260 i SEN 28200 02 27830 0 26 27450 023 27080 023 26710 0 24 2 6340 0 24 2 5970 0 24 2 5590 0 21 2 5220 0 21 2 4850 2 4470 2 4100 2 3730 2 3360 2 2990 2 2620 2 2250 Figure 5 36 Measurement results display 63 lio 5 SOFTWARE DESCRIPTION If the theoretical transformation ratio TTR
65. igure 5 3 in which one will choose the after parameters of the system 8 ETPRT CONFIGURATION UM1B Language Control Spanish AT MIO 16L 9 DD MM YYYY f RS 232 COM1 v C MM DD YYYY E English O noe Power supply Temperature mem German 230 so D amp Centigrade C ER French C Fahrenheit F EH alan Working Mode di i te Field Measurement Factory Measurem ASCII File of Measurements f Default Yalue of Technical Data Figure 5 3 Configuration Screen Control exist two options in the case of that the communication with the unit is performed by means of an acquisition board AT MIO 16 L 9 and RS 232 in the case of that the communication of the PC with the unit is performed by means of the serial port 237 lt liz 5 SOFTWARE DESCRIPTION You will need to indicate which port will be used COM1 COMA by means of the existent ring Supply First of all you will need to select the mains voltage that will be 115 or 230 V The frequency of mains voltage will also need to be selected which will be 50 or 60 Hz by means of the corresponding ring Language Select one of the languages that are listed Once selected after finishing the program configuration all the text of the application will change to the selected language Date The format of the date will be elected be it day month year DD MM AAAA or month day year MM DD AAAA Temperature Select th
66. in the event of problems Is the equipment under guarantee Yes C No Date on which fault occurred Fault detected in equipment The power LED does not light up The status LED does not light up The Test button does not light up The fuse has blown repeatedly The PC communications cable is deteriorated The cable hose with the male connector is deteriorated The cable hose with the female connector is deteriorated The equipment has broken down Others ey p sp sp sp s E 9 8 TECHNICAL SUPPORT Description of fault Materials returned Table 8 1 92 8 TECHNICAL SUPPORT 8 2 Requesting spares Please contact the Sales Department 93 8 TECHNICAL SUPPORT 8 3 Observations The UMIB equipment has been developed and tested under the same conditions and in the same installations as it will see during operation Nevertheless it is always advisable to have insight into the degree of satisfaction of the customer and to know what new performance features he would include and which he would remove in order to improve the system hardware software in the future If you have any observation suggestion to make regarding the equipment software hardware wiring operation characteristics etc please photocopy the following 2 sheets fill them in and send them to your local Sales Department 94 hase 8 TECHNICAL SUPPORT COMPANY Client number Address Ci
67. is single phase or three phase Y OF MANUFACTURING Year in which the transformer was manufactured COOLING Type of cooling of the transformer May be by oil or dry POWER MVA Maximum power of the transformer in millions of volt amperes RATED Vsc Rated short circuit voltage in percentage terms This is the percentage of the rated voltage that needs to be applied to the high voltage winding in order for the rated current to flow through the low voltage winding under short circuit conditions This is shown on the nameplate CONNECTION GROUP This is the coil connection group for three phase transformers By clicking on the indicator a list of the existing possibilities is unscrolled Those groups for which N n appears have one of the windings with the neutral accessible if N is shown e g YNy0 the high voltage winding has the accessible neutral while if n is shown e g Dyn5 it is the low voltage or tertiary winding TERTIARY GROUP This indicates whether the transformer has a third winding in addition to the high and low voltage windings 46 liz 5 SOFTWARE DESCRIPTION g ETPRT TECHNICAL DATA x FILE EASAGEN_WIN Ensayos TRPCOTRA54032 RDT TRPCOTRAS4032 0 TECHNICAL SITE unitronics SITE Alt MADE BY A DATE 05 06 01 UM1B SERIAL NS 2000 2 MACHINE Power Transformer MANUFACTURER COTRADIS FUNCTION test SERIAL N 54032 High Voltage Low Voltage Tertiary TYP
68. l Therefore Nu 3 R1 e17 que 2 DESCRIPTION OF MEASUREMENT METHOD 2 4 6 Groups Yz Groups Test Phase vi v2 RT Theoric Phase V1 V2 U 1U 1N 2u 2v v 3 Nu 2 YNzn1 YNz1 V 1V IN 2v2w E 0 Nv 2 Ww IW IN 2w 2u on Nw 2 U 1U 1N 2w 2u V 3 Nu 2 YNzn5 YNz5 V 1V IN 2u 2v En 0 Nv 2 Ww IW IN 2v 2w Se Nw 2 U 1U 1N 2u 2v v 5 Nu 2 YNzn7 YNz7 V 1V IN 2v 2w y 80 Nv 2 W IW IN 2w 2u Nw 2 U 1U 1N 2w 2u Vv Nu 2 YNzn11 YNz11 V 1V IN 2u 2v V 80 Nv 2 Ww IW IN 2v 2w e Nw 2 U 1U 1V 2v 2w 2u dE RI Yzn1 Yz1 V 1V 1W 2w 2u 2v i 80 R2 wW 1W 1U 2u 2v 2w bi R3 U 1U 1V 2u Qv42w m RI Yzn5 Yz5 V 1V 1W 2v 2w 2u x 80 R2 Ww 1W 1U 2w 2u 2v al R3 U 1U 1V 2v 2w 2u ada RI zn Z w 2u4 2v Yzn7 Yz7 V 1V 1W 2w Qu42v E 0 R2 W 1W 1U 2u 2v 2w ee R3 U 1U 1V 2u Qv42w uu RI Yzn11 Yz11 V 1V 1W 2v 2w 2u 0 R2 w 1W 1U 2w Qu42v El R3 In these groups is not either possible to obtain relation of each one of the windings to low voltage reason why in the user software it is going away to introduce factor 3 2 for all the phases Therefore relation in the phase u is Nu 3 2 R1 18 lio 3
69. lation that it obtains with the three measures made Some groups of connection exist in which the relation of transformation of each column cannot directly be measured not to have available some of its terminals In these cases a system of three equations is created and it is solved to obtain the simple relation In the following tables it is possible to be seen as the connection made to measure each phase in the different groups from connection and as the simple relations of transformation calculate In the tables the groups of connection based on the topology of the connection without considering the phase angle between the different windings group themselves In some groups of connection when it is tried to measure without access to the neutral terminal it is precise to unit some of the terminals accessible to fix references of voltage that allows us to obtain the relation of simple transformer These connections imagine in the tables of connection with a sign plus For example to measure phase V of a Dy5 group is applied voltage in the terminals 1V and 1W and is measures loss voltage between the terminals 2v and 2w joining the terminals 2w and 2u to say 2v 2w 2u The UMIB has circuits of protection to avoid that the short circuit of terminals of low tension places in short circuit the excited winding either by an error in the connection of the terminals or by an error in the introduction of the group of connection in the software of
70. med on an Item when a failure has already occurred returning it to its Permissible Condition for use Corrective maintenance may be scheduled or non scheduled Corrosion Destruction of a material usually a metal or of its properties due to a reaction with the medium Current Movement of electrons between two points on a conductor due to the difference in potential between both Defect Alteration of the conditions of an Item of sufficient importance to cause its normal or reasonably foreseeable operation to be unsatisfactory Delta connection D connection Connection in series of the coils of a three phase transformer or of each winding of the same voltage assigned to single phase transformers constituting a three phase bank such that a closed circuit is configured Diagnosis Deduction of the nature of a fault on the basis of the symptoms detected Emergency Maintenance Corrective maintenance to be performed immediately in order to avoid serious consequences Equipment Complex unit of a higher order made up of assemblies components and parts to form a functional system Equivalent to the term machine 114 APPENDIX E GLOSSARY Failure Loss of capacity of an Item to perform its specific function Equivalent to the term breakdown Fuse Device protecting apparatus against overload and short circuit conditions It contains a conductor of small cross section that melts in the event of excessive current Ground
71. objective of the manual is to provide all the information necessary for suitable operation IMPORTANT Read the entire instructions manual before starting up the UMIB unit The information contained in this manual is considered to be as accurate as possible In any case UNITRONICS shall accept no responsibility for direct or indirect damage caused by misinterpretation inaccuracies or omissions liz SYMBOLS SYMBOLS DANGER This symbol indicates a highly hazardous procedure that might cause serious damage to the equipment or injuries or even death to persons if not correctly performed that might cause serious damage to the equipment or injuries to persons if appropriate precautions are not exercised ATTENTION This symbol indicates a highly hazardous procedure UNITRONICS S A is an ISO9001 certified company The equipment meets the requirements of the EU Directives UMIB Transformation Ratio Measuring Device User manual June 2008 Fifth Edition UMI1B User Manual V3_0CE doc Copyright 2008 UNITRONICS All rights reserved The reproduction of any part of this manual without authorisation is prohibited The contents of this manual may be modified without notice oe WARRANTY GUARANTEE There is a standard guarantee period for all equipment produced by UNITRONICS This guarantee is for 12 months as from the date of delivery to the client The guarantee covers material and workmanship defects UNITR
72. ot pressed down When requested by the programme disconnect the UMIB unit proceeding as follows Turn off the UMIB Remove the clamps from the equipment being tested Remove the clamps from the UMIB 34 a 5 SOFTWARE DESCRIPTION 5 SOFTWARE DESCRIPTION 5 1 Introduction Along with other units and their respective applications see Appendix C the UMIB forms a system for the testing and analysis of electrical machines Consequently all these applications will be launched from a common application known as the Electrical Machine Testing and Analysis System Figure 5 1 which is located in the folder of the same name in Start Programmes TEST AND ANALYSIS SYSTEM OF ELECTRIC MACHINES DOS Rotative M Power T Huge Wires General Config About Exit ROTATIVE MACHINES POWER TRANSFORMERS MEASUREMENT TRANSF WIRES HUGE WIRES GENERAL POWER TRANSFORMERS UM 1 UM 2 DIAGNOSTIC TRANSFORMER RECOVERY INSULATION TURNS VOLTAGE RESISTANCE ETP DIAGHELP UM 3 UM 5 WINDING RESISTANCE SHORT CIRCUIT IMPEDANCE ETP TRENDS e g Fun Figure 5 1 ELECTRICAL MACHINES TESTING AND ANALYSIS SYSTEM menu screen This screen shows all the tests that may be performed on the different machines and or components If any of the options is shown disabled this means that the client does not have the corresponding application which may be acquired at any time see c
73. raph of Power socket Rigid transport case with external protection reinforcement and interior n padding of high density foam rubber Figure 3 11 Photograph of metallic transport case 24 bi epics 3 UMIB EQUIPMENT SOFUMIXXBWXXX CD with equipment control software UMIBMUXX The present user manual 25 a 3 UMIB EQUIPMENT 3 3 Physical description of equipment Figure 3 12 shows a drawing of the UMIB unit the upper part of the front panel and the lower of the rear panel The function of each element of the unit is described below Transformer Turns Ratio Meter High Voltage Low Voltage S P d d UM1B 0009 Figure 3 12 Explanatory drawing of the UM1B unit Cable hose connector for the high voltage winding of the 1 transformer being tested Female connector with red clamps 2 Cable hose connector for the low voltage winding of the transformer being tested Male connector with black clamps 3 Power ON pilot light This should light up when the power switch 10 is turned on 26 liz 3 UMIB EQUIPMENT Correct operation indicating lamp If the unit is operating 4 correctly this lamp will light up green If it changes to red press the electronic fuse rearm button 8 5 Luminous indicator of communications with the PC Test pushbutton This activates the test to be performed An internal lamp will indicate when this is pressed down
74. re 5 27 NOTICE ADVISE The test hasn t finished yet are you sure to go to analysis eo E mm 0 Figure 5 27 Confirmation that an analysis is to be performed without the test having been completed 58 liz 5 SOFTWARE DESCRIPTION If the analysis of a previous test is interrupted nothing will normally happen unless a value has been modified In this case the warning shown in Figure 5 28 will appear NOTICE ADVISE DO YOU WANT TO SAVE INPUT DATA eo E uu 0 Figure 5 28 Confirmation to save changes made in analysis 5 4 1 Test file selection By clicking on this button and as long as there are tests in the directory SAGEN_WIN Tests the test search facility shown in Figure 5 29 will appear SEARCH TEST MACHINE TYPE TYPE Power Transformer x MANUFACTURER UNIRAVIS Mfr Number e Automatic List Search by fe Mfr Number Search by SELECT FILE CANCEL Manufacturer amp Machine Type Figure 5 29 Test search facility If the search is being performed by manufacturing number there are two search options manual and automatic If automatic a menu will be unscrolled when activating this control including the numbers of the machines on which tests have been performed and automatically filling in the rest of the fields In the case of manual searches the transformer serial number
75. s ask whether the operator wishes to go ahead with his decision Figure 5 47 and if this is the case will offer the possibility of saving the data input Figure 5 48 If these data are saved a file will be created for them in the directory CASAGEN WINTests see section 5 3 1 otherwise the file will not be created and if it existed previously an incomplete test was selected 1t will be deleted NOTICE ADVISE Hi x x The test hasn t finished yet are you sure to exit NOTICE ADVISE DO YOU WANT TO SAVE INPUT DATA o m m Figure 5 48 Message for the saving of data input during the test If on the other hand an analysis was being performed and any data have been modified during it the programme would show Figure 5 49 when exiting the application 75 2 liz 5 SOFTWARE DESCRIPTION NOTICE ADVISE DO YOU WANT TO SAVE INPUT DATA If you select NO data file will be deleted e E e Figure 5 49 Message for saving of data modified during analysis At the end the programme issues a reminder that the measuring unit should be turned off Figure 5 50 since while it is turned on the software application cannot be exited correctly NOTICE ADVISE SWITCH OFF THE MEASUREMENT UNIT PLEASE e e Figure 5 50 Warning of the need to turn off the measuring unit 76 T 6 EQUIPMENT MAINTENANCE 6
76. s have a regulator adjuster which was fixed and in which position In addition if the number of regulator adjuster positions were lower than 7 this page would show the theoretical transformation ratio and the calculated ratio for each and just below a graph representing the transformation ratio for each position measured As in this case the number of regulator adjuster positions measured is higher than 6 the data and the graph would go on to the 4 page The 3rd page shows the no load current the powers active reactive and apparent and the mismatch between voltage and current through the high voltage winding for each phase Below there is a power triangle drawing and a representation of the currents measured in each high voltage winding phase This representation will not be performed if during the test the option Do not display was chosen for the nominal position The 4th page shows the ratios calculated as long as the number of positions measured is higher than 6 The structure of this page is like that of a spreadsheet 68 liz 5 SOFTWARE DESCRIPTION Each row shows the values of the theoretical and calculated transformation ratios along with the phase mismatch between windings for each Below this table there is a graph representing the transformation ratio for each position measured If a maximum of 6 positions were measured for the transformer these data would be shown in the lower part of page 2 As may be appreci
77. surement Figure 519 m TAPS TO MEASURE O W CONNECT THE TAP CHANGER ON TAP Figure 5 19 Warning that the regulator adjuster should be placed in the position shown Once this action has been carried out click on ACCEPT and the programme will check whether the front button is pressed down If this is not the case a screen will be shown Figure 5 20 requesting that this be done If for any reason the measurement is not to be carried out it may be cancelled by means of the button included for this purpose in the lower part of the screen 54 liz 5 SOFTWARE DESCRIPTION E T P TRANSFORMER TURNS RATIO PUSH THE TEST BUTTON Figure 5 20 Message requesting that the test button be pressed When the test button is operated the excitation voltage 115 V is applied to the terminals of the transformer to be checked If during the measuring process an overcurrent condition occurs 1 gt 2 0 A either because of the existence of a short circuit in the transformer or in the cables or because the no load current exceeds 2 0 A the test will be interrupted The excitation voltage is no longer applied and the status LED 4 lights up in red When this occurs the programme will display the following message on screen see Figure 5 21 2 NOTICE MESSAGE x A SHORT CIRCUIT HAPPENED CHECK THE CONNECTIONS AND PUSH THE REARM BUTTON IN BACK PANEL DO YOU W
78. t should be turned off and left to cool down for a few minutes The time taken by the PTC s to reclose depends on the ambient temperature with between 5 and 30 minutes usually being sufficient ES liz 4 PREPARATORY STEPS PRIOR TO USE 4 PREPARATORY STEPS PRIOR TO USE The UMIB is a high performance automatic system designed especially for the measurement of the transformation ratio To accomplish this measurement the alternating current from the mains is used as a result of which the equipment may provide relatively high voltages up to some 115 Vac during testing This may cause a serious hazard for the operator of the equipment if it is handled incorrectly Consequently IT IS ESSENTIAL THAT THE OPERATOR IN CHARGE OF HANDLING AND MAINTAINING THE EQUIPMENT BE TECHNICALLY TRAINED Likewise everybody performing or witnessing a test should take the necessary safety precautions to avoid any contact with the parts to be analysed or forming part of the measuring system remaining at a distance from these parts unless they are free from voltage and grounded Measurements made with the UMIB system are OFF LINE Consequently before starting the test THE SYSTEM SHOULD BE CHECKED TO BE FREE FROM VOLTAGE LOAD If the equipment is damaged during the guarantee period due to inappropriate use without following the indications given in this chapter the repair may be excluded from the guarantee 29 Ui seers 4 PREPARATORY
79. tablished criteria in order to reduce the probability of failure or loss of performance of an Item This is always scheduled Power Product of the voltage applied to a circuit and the current passing through it This is measured in watts W 116 lio APPENDIX E GLOSSARY Rack Box enclosing electronic equipment Rotating machine Set of apparatus combined to receive a given form of energy and replace it with another more adequate form or produce a given effect One of the forms would be kinetic energy Consequently there are AC and DC motors and generators and rotating converters Report Documentation resulting from the performance of a test Regulator Device capable of modifying the number of turns of a transformer and therefore capable of changing its transformation ratio Resistance Opposition of a conductor to the passage of current Rotor Rotating part of a machine RPM Revolutions Per Minute Indicates the working regime of a machine Scheduled Maintenance Preventive maintenance performed at previously determined intervals number of operations distance travelled etc Short circuit Joining of two points subjected to different voltages across a very small resistance bridge The current reaches its maximum value Short circuit voltage The voltage that needs to be applied to the high voltage winding in order for a rated current to run through the low voltage winding when the latter is short circuited
80. ter NUM OF MANOEUVRES Number of times that the position of the transformer regulator has been changed during operation modifications undergone during testing are not counted REGULATION Type of regulator This may be of the load switch or under cover type NUM OF POSITIONS Number of regulation positions of the regulator adjuster JUMP Increase in magnitude that occurs between one position and the next This may be defined in volts or in terms of percentage 96 with respect to the rated voltage If defined in percentage terms 46 the increase may not exceed 100 an error message appearing if this is the case Figure 5 13 ERROR MESSAGE d X The field Jump of the TAP CHANGER OF THE HIGH is out of range maximum 100 D D Figure 5 13 Warning that the jump between regulator positions may not exceed 100 48 a 5 SOFTWARE DESCRIPTION NOMINAL POSITION Regulator adjuster tap to which the nominal transformer magnitudes voltage current etc refer NUM OF CENTRAL POSITIONS Number of positions for the nominal position maximum of 6 Normally there is only one If there is more than one the nomenclature used would consist of the number of the central position plus a letter For example 12a 12b 5 3 3 Measurement configuration This screen Figure 5 14 is used to select the application mode to be used for the transformer 1 e whether the measurement is to
81. the following figure the block diagram of the unit can be seen that allows to understand better the process us of measurement TRANSFORMER CONNECTION UNDER TEST CONNECTION MATRIX MATRIX i PROTECTION A ELEMENTS CURRENT I MEASUREMENT Y CONVERTER ZERO CROSS RMS DC DETECTOR a ts TEST VOLTAGE CONVERTER PHASE RA D MEASUREMENT 115V CONTROL PLATE INTERFASE WITH PC RS 232 Figure 2 1 Block diagram to UMIB The control plate besides to make the measurement of the different magnitudes and to send these data to the PC for its representation controls the rest of the circuits of connection The communication with the PC is made by a series line to 19200 bauds The three measures of voltage V1 V2 and Il are obtained from simultaneous form The UMIB has three converters of true effective value reducing errors due to fluctuations of the feeding voltage ze a 2 DESCRIPTION OF MEASUREMENT METHOD 2 4 Three phase measurement The UMIB has a voltage of single phase excitation and for measure three phase transformer it must do three measures modifying the terminals in which the voltage is applied and the voltage in low voltage is measuring The UMIB calculates the value of the relation of simple transformation of each one of the columns being based on the data of the transformer introduced by the user and it compares it with the simple re
82. the programme will automatically fill in the rest of the fields e g MANUFACTURING NUMBER or will limit the number of possible cases see also section 5 4 1 The programme will use the data input via the template to generate a directory with the following structure C SSAGEN_WIN Tests TTTFFFFFNNNN where TTT Machine type 3 letters Power transformer TRP Distribution transformer TRD Current transformer TRI Voltage transformer TRV 13 liz 5 SOFTWARE DESCRIPTION FFFFF Manufacturer code 5 characters The first 5 letters of the manufacturer s name If this name has fewer than 5 letters the system will automatically fill in the rest with low hyphens until the five characters are completed gt If the name input contains certain characters V g these will automatically be replaced with the characters shown below only when creating the files in the PC not as regards what is seen by the operator Alt Gr 6 Alt 225 Alt 230 Alt 231 Alt 221 Alt 244 Alt 21 20 i Mma Tr D NNN Manufacturing number up to 242 characters Transformer identification For example the tests performed on voltage transformer 123456 of the Uniravis make will be saved in the sub directory C SSAGEN_WIN Tests TRVUNIRA 123456 and those carried out on power transformer 654321 of the brand ARK in sub directory C SAGEN_WIN Tests TRPARK ___654321
83. tion of equipment cree cree ee ee ee esee ee seen ette seen setas tn setas s taas ena 26 Kr xSUnNogTDIL E 28 4 PREPARATORY STEPS PRIOR TO USE Qu ccssccsssscssssscssssscessscsssnsessenseseonsssnnssssonnssseosees 29 4 1 Precautions in the installation area 4 eese esee eee eese e teen etna enne tn stes sna tn sets cons 30 4 2 Equipment connection eese esee esee etes en ene tns etnia tust ts statu setas e sense tastes sns tn seasons 31 4 3 Equipment disconnection 4 e eeeee eese essen eese enses enata statuae tastes sn setas eese natn sees coo 34 Se SOFTWARE DESCRIPTION ns 35 A o isses s sseses ssns essi sio suossa sssi 35 5 2 Hardware dongle Configuration Menu se sesoossesooesessoesossossocssesoossesoosseseossossossossos 37 5 3 Test AAA 39 5 3 1 Testadentificati n ie seb c CO TREE RAE hace RI REN CERE E RETE ER ud 41 5 3 2 Transformer technical data nc de wei Ea ug 45 5 3 3 Measurement configuration enne ene neee teen tren teen et rennen enne 49 lsc INDEX DDS COMME CHO III EE 51 23 23 57 MEASUTEMEMIS wees uie eter NS 52 A O 58 A ESMISIS USER 59 5 4 2 Transformer technical data ooocnnnncnonoconocanoncnnonnnconnnononononcnconnnconononnnnnnncnron nn conc nro nennen ens 61 25 4 5 5 Results tables se eH PEE chante GENERE eee y best extp ea bey bestes ye Pete cbe vbR e etapa e ce
84. tion that a new test is to begin Figure 5 5 NOTICE ADVISE ES x The test hasn t finished yet are you sure to start again eo E m 0 Figure 5 5 Warning that a new test is about to begin before the previous one has been completed If the analysis of a previous test is interrupted nothing will happen unless some value that might affect the analysis has been modified in which case a screen such as the one shown in Figure 5 6 will be shown NOTICE ADVISE BEEN c x DO YOU WANT TO SAVE INPUT DATA If you select NO data file will be deleted Figure 5 6 Warning to save input data The programme will then ensure that the UMIB is working correctly It then checks for the existence of incomplete tests i e checks that have not been finished e g loss of electrical supply The programme offers the possibility of continuing with incomplete tests deleting all incomplete tests or beginning a new test Figure 5 7 40 liz 5 SOFTWARE DESCRIPTION Existing incomplete tests If you want to carry out a new test press the button CANCEL or lt Esc gt If you want to delete all the temporary files press the button DELETE or F3 If you want to continue with the test press the button SELECT FILE or F1 X 31 al i CANCEL i DELETE SELECT FILE Ie e Figure 5 7 Warning of the existence of incomplete tests 5 3 1 Test identification
85. turned off This process is repeated for each of the selected regulator adjuster positions The measurement may be cancelled at any time by clicking on the button If the measurement is performed on a winding with regulator adjuster the E button will be enabled and will show the transformation ratios measured with respect to the regulator positions Figure 5 25 The phase to be displayed may be selected the plot for which will be in the colour of each phase in the selection box TRANSFORMER TURNS RATIO FOR EACH WINDING TAP POSITION 2 W PHASE U Y PHASE V Y PHASE W TAP Figure 5 25 Graph showing the transformation ratio measured at the different regulator adjuster positions This graph is floating in other words it may be moved across the entire screen To remove it click on the _ button 57s liz 5 SOFTWARE DESCRIPTION 5 4 Test analysis The analysis of a test comprises a series of screens that show technical data on the transformer and a table with the results obtained for each winding with a graphic display included when it has a regulator adjuster Analysis Measurements Tables Power Triangle gt EH To perform an analysis the Analysis button 1s activated on the main menu This button is used to begin a new analysis regardless of the execution of the programme If a test was already being executed the system will request confirmation for the new step Figu
86. ty Es Province Contact person e mail Telephone Serial No of UMIB Date of purchase Degree of satisfaction L Very satisfied _ Satisfied _ Dissatisfied _ Fairly satisfied _ Not very satisfied L Very dissatisfied What safety elements would you add What new calculations should the equipment perform 95 lt T 8 TECHNICAL SUPPORT What standard optional elements would you add What elements would you remove What defects have you found in the system On CENE Table 8 2 96 8 TECHNICAL SUPPORT 8 4 Authorised representatives and technical services UNITRONICS Sales department UNITRONICS Sales department Avenida Fuente Nueva 5 28709 San Sebastian de los Reyes Madrid SPAIN Tel 34 91 540 01 25 Fax 34 91 540 10 68 URL http www unitronics electric com Technical service UNITRONICS Technical service Avenida Fuente Nueva 5 28709 San Sebastian de los Reyes Madrid SPAIN Tel 34 91 540 01 25 Fax 34 91 653 98 10 URL http www unitronics electric com 97 9 SPECIFICATIONS 9 SPECIFICATIONS 9 1 Electrical Power requirements Version 1 230V ac 10 50Hz 5 6 60Hz 5 Installation category II according to IEC 664 1 Version 2 115V ac 10 50Hz 5 60Hz 5 Installation category II according to IEC 664 1 Consumption 350 VA max Fuses 5AT 250 Vac 20x5 3 15 A T 250 Vac 20x5
87. u 2v iN 0 Nv V wW 1W 1U 2v 2w 2N Nw U 1U 1V 2u 2v v Nu Dd6 V 1V 1W 2v 2w n 180 Nv wW 1W 1U 2w 2u ii Nw U 1W 1U 2u 2v v Nu Dd8 v 1U 1V 2v 2w M 0 Nv V wW 1V 1W 2w 2u SN Nw U 1U 1V 2w 2u v Nu Dd10 V 1V 1W 2u 2v m 180 Nv wW 1W 1U 2v 2w an Nw These groups are simplest to measure because we always have access to all the necessary terminals In these groups always the simple relation is obtained In this set of connection groups it is not necessary to use no type of equation to obtain the simple relations 2 ax qe 2 DESCRIPTION OF MEASUREMENT METHOD 2 4 3 Groups Yd Groups Test Phase vi v2 RT Theoric Phase V1 V2 U 1U 1N 2u 2v Nu YNd1 V 1V 1N 2v 2w 0 Nv W 1W 1N 2w 2u Nw U 1U 1N 2w 2u Nu YNd5 V 1V 1N 2u 2v 0 Nv wW 1W 1N 2v 2w Nw U 1U 1N 2u 2v Nu YNd7 V 1V IN 2v 2w 180 Nv W 1W 1N 2w 2u Nw U 1U 1N 2w 2u Nu YNd11 V IV IN 2u 2v f 180 Nv W 1W 1N 2v 2w a e Nw U 1U 1V 2v 2w 2u y RI Yd1 V 1V 1W 2w Qu42v dE 180 R2 Ww 1W 1U 2u 2v 2w MEUM R3 U 1U 1V 2u 2v 2w RI Yd5 V 1V IW 2v Qw42u ZB 180 R2 W 1W 1U 2w 2u 2v d R3 U 1U 1V 2v 2w 2u RI Yd7 V 1V IW 2w Qu42v T 0 R2 V
88. uration the data will be calculated on the basis of those obtained for the first regulator adjuster position selected It goes without saying that if the transformer has no regulator adjuster these data will be those taken for the single transformer position 64 lio 5 SOFTWARE DESCRIPTION As is the case for all the screens the upper part shows the name of the file containing the test being analysed along with the measurement mode the fixed winding and the position of the regulator of the variable winding In the central part there is a table containing the no load current the three types of power active reactive and apparent and the phase mismatch between voltage and current through the high voltage winding in all cases for each of the phases Below this table there are two graphs the one on the left represents the current through each of the phases of the high voltage winding at the regulator position to which the data refer and the one on the right shows a power triangle reminding the operator of the meaning of each The current graph will not be shown if do not display was selected for the Nominal Position FILE e SAGEN_WIN Ensayos TRPGENERS2880 RDT TRPGENER82880 0 WINDINGS HV LV FIXED TAP CHANGER TERTIARY FMEDTAP 2 NOMINALTAP DATA 1 U Vi2 wu Tvwi2uv 1wu uw2vw EXCITATION CURRENT A ACTIVE POWER W REACTIVE POWER VAR APPARENT POWER V
89. urrent condition has occurred The indicator has blown The equipment is faulty 85 7 TROUBLESHOOTING SOLUTION Connect properly Send the equipment to an authorised technical service Replace the fuse see section 6 3 If the fault persists send the equipment to an authorised technical service Send the equipment to an authorised technical service Press the rearm button 8 If it continues lit in red send the equipment to an authorised technical service Send the equipment to an authorised technical service Send the equipment to an authorised technical service T 7 TROUBLESHOOTING SYMPTOM PROBLEM SOLUTION On executing the programme the Test option is disabled The connecting cable is installed between the UMIB and the PC but the connections screen Section 5 2 3 indicates the contrary The message A short circuit has occurred Revise connections and press the REARM button on the rear panel Do you wish to continue appears on the programme screen Status LED red The message Incorrect measurement Revise connections and test button appears on the programme screen The hardware key is not in place Not has installed the file of the diskette key The serial cable is not properly connected The serial cable is damaged The connections have not been made properly The transformer has a no load current in excess of 2 Amperes The equipment is faulty
90. used consists of measuring the transformation ratio which allows problems such as the following to be detected e short circuiting between turns cutting of winding e tap changer defects e problems in the core Almost all these methods share one peculiarity the absolute values of the parameters measured are not normally sufficiently indicative as to allow the results to be evaluated Rather it is the evolution of these values that provides the best information on winding status consequently it is of interest that the results be memorised and incorporated into databases to allow for correlation This leads to the definition of a predictive maintenance policy consisting of the scheduling with sufficient frequency of a series of routine easily performed tests that through analysis of certain parameters provides sufficient information on the evolution of the assembly overall When this analysis detects rapidly evolving situations or when values are reached that on average might be considered hazardous other more complex techniques will be applied possibly implying the unavailability of the machine for extended periods of time or even some risk for the integrity of the winding The objective of this type of maintenance is to gain accurate insight into the actual status of an item of equipment or component and depending on this status determine the best course of action continue with normal operation impose certain limitations undert

UM1B (Transformers Turns Ratio Meter) User Manual

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