2,5 kV Insulation / Continuity MI 3121H Instruction manual
Contents
1. 250 mA internally regulated Overvoltage category 600 V CAT III 300 V CAT IV Protection classification double insulation Pollution degree 2 Protection degree IP 40 DDISDIdVcu br m EE ay custom liquid crystal display with backlight Dimensions w x h x d 14 cm x 8 cm x 23 cm VVGIGIG saree 0 85 kg without battery cells Heference conditions Reference temperature range 10 C 30 C Reference humidity range 40 RH 70 RH Operation conditions Working temperature range 0 C 40 C Maximum relative humidity 95 RH 0 C 40 C non condensing Storage conditions Temperature range 20 C 70 C Maximum relative humidity 90 RH 10 C 40 C 80 RH 40 C 60 C Maximum operation voltage 600 V a c Communication transfer soeed FAC Oe ussutddidadt d DRM MM ME 115200 baud BB ioo DENM NOTE goad area A AA 256000 baud The error in operating conditions could be at most the error for reference conditions specified in the manual for each function 1 of measured value 1 digit unless otherwise specified in the manual for particular function 40 MI 3121H Smartec 2 5 kV Insulation Continuity Accessory for specific measurements 9 Appendix A Accessor2. Connect test leads to the tested object see Figure 5 18 Store voltage measurement result optional Measurement starts immediately after selection of VOLT function Possit LUN T rTrrrrrr Anonat Figure 5 19 Example of voltage measurement Displayed results Voltage between test terminals value Voltage between test terminals analog presentation Frequency 31 MI 3121H Smartec 2 5 kV Insulation Continuity Memory organization 6 Data handling 6 1 Memory organization Measurement results together with all relevant parameters can be stored in the instrument s memory 6 2 Data structure The instrument s memory place is divided into 2 levels each containing 199 locations The number of measurements that can be stored into one location is not limited The data structure describes the identity of the measurement which object location This organization helps to handle with data in a simple and effective manner The main advantages of this system are a Test results can be organized and grouped in a structured manner that reflects the structure of typical electrical installations a Browsing through structures and results is simple a Test reports can be created with no or little modifications after downloading results to a PC P iii d LOC ALT P TAAAAA G WA A L GDAAAA B B Figur
3. After selection of CLEAR result the instrument will display the following Figure 6 6 Clear measurements menu Keys in clearing individual results menu data structure field selected TAB Selects the location element Object Location UP DOWN Selects number of selected location element TEST Opens last result at selected location UP DOWN Rotate through stored results to select one to clear TEST Clears current recalled result and recalls the next one Function selector MEM Exits back to main function menu without changes LAA ee ee a a a a a a a a m a e m a m a a a m a Vs 6 68 6 5 55 65 65 555555 6555 65 6655 665566655655555655655555550SE8eESeeeeeeee8e00F Figure 6 7 Clearing in progress Figure 6 8 Display after finished clear 35 6 6 Communication Stored results can be transferred to a PC A special communication program on the PC automatically identifies the instrument and enables data transfer between the instrument and the PC There are two communication interfaces available on the instrument USB or RS 232 The instrument automatically selects the communication mode according to detected interface USB interface has priority PS 2 RS 232 cable minimum connections 1 to 2 4 to 3 3to 5 PS 2 for MI 3121H 9 pin D female for PC Figure 6 9 Interface connection for data transfer over PC COM port How to transfer stored data HS 232 communication connect a PC COM port to the instrument PS 2 conn
4. SMARI EC 2 5 kV Insulation Continuity MI 3121H Instruction manual Version 1 2 Code no 20 751 674 Distributor Manufacturer METREL d d Ljubljanska cesta 77 1354 Horjul Slovenia web site http www metrel si e mail metrel ometrel si 2010 METREL The trade names Metrel Smartec Eurotest Autosequence are trademarks registered or pending in Europe and other countries No part of this publication may be reproduced or utilized in any form or by any means without permission in writing from METREL MI 3121H Smartec 2 5 kV Insulation Continuity Table of contents UMEN dine teete 5 2 Safety and operational considerations ecce eese eere 6 2 1 Warbings and tioleS iata tuetur mera quate pastu aaa ha as eee dees ed vedas 6 ZO AMEN ua ro a N M E Tom 8 2 2 1 New battery cells or cells unused for a longer period 9 Cage a MEME ion Lo I ik OUTRE ERE I E 9 23 Iahdards apple uideo denda deme dom d Me dem Menu due 10 3 Jnsir mient descripHIOD sio eee a ees 11 3 1 meneame ce 11 92 CONMMECIOR Dateli ence te esi pc ee petet iR Mee REM M EL UE LE LLLI UE 12 J 9 Baokpatelusssesexdseidiva vy dove cud Dura vd w Y v els cow a v vd ed Y Ted wav go eda vu Viv v Ea EE PR i ud 13 S IS Ota ONG Al ZO lisse aep NR Rd MIN LR dm
5. EN 61010 1 EN 61010 031 Functionality EN 61557 Electrical equipment for measurement control and laboratory use EMC requirements Class B Hand held equipment used in controlled EM environments Safety requirements for electrical equipment for measurement control and laboratory use Part 1 General requirements Safety requirements for hand held probe assemblies for electrical measurement and test Electrical safety in low voltage distribution systems up to 1000 V a c and 1500 V d c Equipment for testing measuring or monitoring of protective measures Part 1 General requirements Part 2 Insulation resistance Part 4 Resistance of earth connection and equipotential bonding Part 10 Combined measuring equipment Note about EN and IEC standards Text of this manual contains references to European standards All standards of EN 6xxxx e g EN 61010 series are equivalent to IEC standards with the same number e g IEC 61010 and differ only in amended parts required by European harmonization procedure 10 MI 3121H Smartec 2 5 kV Insulation Continuity Front panel 3 Instrument description 3 1 Front panel Legend 1 LCD 2 EST 3 UP 4 DOWN 5 MEM 6 Function selector 7 Backlight 8 ON OFF 9 CAL 10 TAB 11 PASS 12 FAIL Figure 3 1 Front panel Custom display with backligh
6. EM ga uM nMM ana 14 3 4 1 PUIG UO INGO VT ORO DR EE 14 942 Besult WIGS eesis tu Dandetu dieit dndetai ine nadie iuit du 14 949 Message NOl isare 15 SAA ARMAN MONO mrt 15 S420 Balen Ate 16 346 Other message cci e E pt En ap t P Deu eee 16 3 4 7 BACMIOM wwsesesususneusdugseiediaensivadunsstinadadonsucdsterduabstunseadstaniestadendsudetendasbadeyiesveteuTs 16 3 5 INSTRUMENT setariddocesSorleSsisiie ie peni eet o Ier a Pape Roe m oae AE 17 3 5 1 teh dtu eludet e ECCE MU PILAE EA ILE EI er 17 Se JObtoOhal aecessollBSs geeks Sivas devas tere wees Mande Mange 17 4 MSru ument operat ON c M MR 18 4 JURDCHonSelellOEL ce 22 29 242 09222429922920990 2922 92222429 52 9429 9929 992900 999 99 2 9 2900999 90 0202026 18 Aes SOLMTOS sossctucasic adio ende a ividie bees n ance auo E sra ES Ce 19 4 2 1 WANTS STUNG Syst rcs fers sea fedet io foeda fo aet fotos hat bats hat Aat oa teas 19 4 2 2 alterna UME ah asics asics pastes ee aeie tiene leoeget tod e ee eue reed esu e eee 20 5 NMeasuremefls 5 5 3 2 nri oe uebe eina Des aie orca a 21 5 1 HVS NATIONS SIS TACO cuesta mto Ht ce Soa ice ei AARAU ANH ED EN 21 5 1 1 Insulation resistance measuring procedure ccccseeeeeeeeeeeeeaeeeeneeeeseeeens 21 SL die BAR and ll ClAQNOSIIG zefeunsdu uim ko Rd Rd era datu RO fuus Let vn COS Dd 23 SES GARG tefriialis
7. EN61557 is 0 15 MQ 100 GQ 0 00M 19 99M 0 01 5 of 3 digits L 3mu s 0 01 07 i 1 00G 4 99G 0 96 of reading 20 of reading 20 of reading Dielectric absorption ratio DAR Polarization index Pl Display range PI 0 01 9 99 5 of reading 2digits 10 0 100 0 5 of reading Voltage Measuring range V Resolution V 1999 o 1 38 2 a reading 3 digits cd 3 00k 10 3 OF reading Nominal voltages TP 100 Vpc 250 Vpc 500 Vpc 1000 Vpc 2500 Vpc Open circuit voltage 0 96 20 96 of nominal voltage Measuring current min 1 mA at Run Unx1 kQ V Short circuit current max 3 mA The number of possible tests gt 1200 with a fully charged battery Auto discharge after test Specified accuracy is valid up to 100 MQ if relative humidity is move over 85 96 In case the instrument gets moistened the results could be impaired In such case it is recommended to dry the instrument and accessories for at least 24 hours The error in operating conditions could be at most the error for reference conditions specified in the manual for each function 5 96 of measured value 38 MI 3121H Smartec 2 5 kV Insulation Continuity Technical specifications 8 2 Continuity 8 2 1 Resistance RLOW Measuring range according to EN61557 is 0 16 Q 1999 Q Measuring range R Q Reso
8. GUARD terminal Rins Ut la Ut IM IL incorrect result Result using GUARD terminal Rins Ut lA Ut IM correct result It is recommended to use the GUARD connection when high insulation resistance gt 10G Q is measured You need optional 2 5 kV 3 wire test lead Figure 5 3 The guard terminal is internal impedance 660 KQ protected 25 MI 3121H Smartec 2 5 kV Insulation Continuity Continuity 5 2 Resistance of earth connection and equipotential bonding The resistance measurement is performed in order to assure that the protective measures against electric shock through earth bond connections are effective Two sub functions are available a RLOW Earth bond resistance measurement according to EN 61557 4 200 mA a CONT Continuous resistance measurement performed with 7 mA amt eere ee See chapter 4 1 Function selection for B instructions on key functionality RLOW oO Figure 5 11 200 mA RLOW function example Test parameters for resistance measurement Resistance measurement sub function RLOW CONT Maximum resistance OFF 0 1 Q 20 0 Q 5 2 1 RLOW 200 mA resistance measurement The resistance measurement is performed with automatic polarity reversal of the test voltage Test circuit for RLOW measurement MPEC Main Potential Equilizing Collector PCC Protection Con
9. connected in series during the charging The battery cells have to be equivalent Same charge condition same type and age a One different battery cell can cause an improper charging and incorrect discharging during normal usage of the entire battery pack it results in heating of the battery pack significantly decreased operation time reversed polarity of defective cell a If no improvement is achieved after several charge discharge cycles then each battery cell should be checked by comparing battery voltages testing them in a cell charger etc It is very likely that only some of the battery cells are deteriorated a The effects described above should not be confused with the normal decrease of battery capacity over time Battery also loses some capacity when it is repeatedly charged discharged Actual decreasing of capacity versus number of charging cycles depends on battery type This information is provided in the technical specification from battery manufacturer 2 2 2 Auto Power Off The Instrument has the Auto Power Off function If the instrument is Turn On and inactive for period of 15 minutes it automatically Turn Off MI 3121H Smartec 2 5 kV Insulation Continuity Standards applied 2 3 Standards applied The MI 3121H Smartec 2 5 kV Insulation Continuity instrument is manufactured and tested according to the following regulations listed below Electromagnetic compatibility EMC EN 61326 Safety LVD
10. function menu 4 2 1 Initial settings selecting this option will allow the user to reset the instrument settings and measurement parameters and limits to the manufacturers standard values Figure 4 2 Initial settings display Keys TEST Restores default settings Function selector Exits back to main function menu without changes Warning a Custom made settings will be lost when this option is used a If the batteries are removed for more than 1 minute the custom made settings will be lost 19 MI 3121H Smartec 2 5 kV Insulation Continuity Settings The default setup is listed below Instrument setting Default value Function Parameters limit value Sub function Insulated resistance No limit Utest 2 500 V Continuity RLOW RLOW No limit CONT No limit Note a Initial settings reset of the instrument can be recalled also if the TAB key is pressed while the instrument is switched on 4 2 2 Date and time Selecting this option will allow the user to set the date and time of the unit Figure 4 3 Setting date and time Keys TAB Selects the field to be changed UP DOWN Modifies selected field TEST Confirms new setup and exits Function selector Exits back to main function menu Indications d d p 7 Set day p Set month et month Lc d S Get et year Uo Eh Lg Set hour l Ern J5 Set minute Warning a If the batteries are removed for more than 1 minute the set time wil
11. of electric shock while dealing with hazardous voltages Only a competent authorized person is allowed to carry out service intervention or adjustment and calibration procedure Use only standard or optional test accessories supplied by your distributor Consider that older and some of new optional test accessories compatible with this instrument meet overvoltage category CAT Ill 300 V It means that maximum allowed voltage between test terminals and ground is 300 V Instrument contains rechargeable NiCd or NiMh battery cells The cells should only be replaced with the same type as defined on the battery placement label or in this manual Do not use standard alkaline battery cells while power supply adapter is connected otherwise they may explode Hazardous voltages exist inside the instrument Disconnect all test leads remove the power supply cable and switch off the instrument before removing battery compartment cover All normal safety precautions have to be taken in order to avoid risk of electric shock when working on electrical installations AN Warnings related to measurement functions Insulation resistance E Do not touch the test object during the measurement or before it is fully discharged Risk of electric shock Automatic discharge of capacitive object will take some time after the finished insulation resistance measurement Actual voltage is displayed during discharging until voltage drops below 10 V In no case you
12. should disconnect test leads until tested object is completely discharged MI 3121H Smartec 2 5 kV Insulation Continuity Warnings and notes Notes related to measurement functions General B d d If there is any irregular condition on input terminals then the selected measurement can t be performed Insulation resistancecontinuity measurements shall be performed on de energized objects i e voltage between test terminals should be lower than 10 V PASS FAIL indication is enabled when limit is set to ON Apply appropriate limit value for evaluation of measurement results Insulation resistance E L When measuring insulation resistance between installation conductors all loads must be disconnected and all switches closed The instrument automatically discharge tested object after finished measurement Click the TEST key twice for continuous measurement It is recommended to use the GUARD connection when high insulation resistance gt 10G Q is measured You need optional 2 5 kV 3 wire test lead The guard terminal is internal impedance 660 KQ protected The DAR and PI diagnostic is automatically calculated during insulation measurements Continuity functions d E Parallel resistance paths and interfering currents in measured circuit will influence the test result lf necessary compensate test lead resistance before performing continuity measurement see 5 2 3 Measurement of resistance of wire
13. sub results menu Here you can list sub results DAR PI and R60 with normal pressing on the TAB key Automatically turn back from sub result menu is occurred after all sub results are displayed once See the Figure 5 7 Figure 5 8 and Figure 5 9 Figure 5 7 DAR result Figure 5 8 PI result Figure 5 9 R60 value displayed after measurement displayed after measurement displayed after measurement For additional information regarding PI and DAR diagnostic please refer to Metrel s handbook Modern Insulation Testing 5 1 3 Guard terminal The purpose of the GUARD terminal is to lead away potential leakage currents e g surface currents which are not a result of the measured insulation material itself but of the surface contamination and moisture This current interferes with the measurement i e the Insulation Resistance result is influenced by this current The GUARD terminal is internally connected to the same potential as the negative test terminal black one The GUARD test alligator should be connected to measured object so as to collect most of the unwanted leakage current see the figure below 24 MI 3121H Smartec 2 5 kV Insulation Continuity Insulation resistance Figure 5 10 Connection of GUARD terminal to measured object where 9 M Test voltage Leakage current resulted by surface dirt and moisture IM Material current resulted by material conditions JD EM A meter current Result without using
14. GNIE ea Ree Rn ne T 37 FECHMICAl speci Ccallofis arsi OEE 38 8 1 Iis ateTesistali Ero aie d ane ah i sett ase TUE U EEA ee ae en 38 Ge GOAI mer eee eee ene ee mn aro Oe ev OO ee ne ee one ee eee enc tee eee te 39 8 2 1 RESISTANCE REO C w 39 Sie Resistance CONT m 39 9 9 Voltage Ttequehley iore Li ERREUR pa E EAR EA AER VAR ERA ERF RARI RAM RERIEARE NARI 39 8 3 1 LONTE E S Yv n 39 8 3 2 FeO UCC demo omo ETT 39 84 General dalare Tre 40 9 Appendix A Accessories for specific measurements 41 MI 3121H Smartec 2 5 kV Insulation Continuity Preface 1 Preface Congratulations on your purchase of the instrument and its accessories from METREL The instrument was designed on basis of rich experience acquired through many years of dealing with insulation and resistance test equipment The multifunctional hand held insulation tester Smartec 2 5 kV Insulation Continuity is intended in general for the following tests and measurements a Truer m s voltage and frequency a Insulation resistance with high d c test voltage up to 2 5kV a Resistance to earth connection and equipotential bonding plus continuous resistance measurement The custom designed display with backlight offers easy reading of results indications and measurement parameters The operation of the unit is clear and simple the operator do
15. compartment if the instrument is not used for a long period of time a Do not charge alkaline battery cells a Take into account handling maintenance and recycling requirements that are defined by related regulations and manufacturers of alkaline or rechargeable batteries a Use only power supply adapter delivered from the manufacturer or distributor of the test equipment to avoid possible fire or electric shock 8 MI 3121H Smartec 2 5 kV Insulation Continuity Battery and charging 2 2 1 New battery cells or cells unused for a longer period Unpredictable chemical processes can occur during charging of new battery cells or cells that were unused for a longer period more than 3 months Ni MH and Ni Cd battery cells are affected to capacity degradation sometimes called as memory effect As a result the instrument operation time can be significantly reduced Hecommended procedure for recovering battery cells Procedure Notes gt Completely charge the battery At least 14h with in built charger Use the instrument for normal testing until the ompletey eisenarge Neatly unit displays the Bat symbol on screen gt Repeat the charge discharge cycle for Four cycles are recommended at least twice y Complete discharge charge cycle can be performed automatically for each cell using external intelligent battery charger Notes a The charger in the instrument is a pack cell charger This means that the battery cells are
16. ductor Collector extension lead Figure 5 12 Connection of 2 wire test lead plus optional extension lead 26 MI 3121H Smartec 2 5 kV Insulation Continuity Continuity Resistance to earth connection and equipotential bonding measurement procedure select continuity function GLOW or CONT using the BACK NEXT keys of function selector oet sub function to RLOW Enable and set limit optional Connect test lead to the top of the instrument Compensate the test leads resistance if necessary see section 5 2 3 Disconnect from mains supply and discharge installation to be tested Connect the test leads to the appropriate PE wiring see Figure 5 12 Press the TEST key to perform the measurement After the measurement is finished store the result by pressing the MEM button optional E n n n n n n mw CS aJU T A O O AWLAAAARA A lA A Md Figure 5 13 Example of RLOW result Displayed result Main RLOW resistance Sub results checking a Press the key TAB for a few seconds The instrument will display sub result r1 Click the key TAB The instrument will display sub result r2 Next click on the key TAB will return the instrument to display main result D DLDZL 5 2 2 Continuous 7 mA resistance measurement CONT In general this function serves as standard Q meter with a low testi
17. e 6 1 Save recall test men Fields in memory organization wae Location number is 6 Number of stored results at Hia currently selected location object 6 16 is 11 n Object number is 16 Number of stored results at LJ currently selected location object 6 16 is 11 32 MI 3121H Smartec 2 5 kV Insulation Continuity Storing test results 6 3 Storing test results After the completion of a test the results and parameters are ready for storing MEM is displayed with result By pressing the MEM key the user can store the results Keys in save test menu data structure field TAB Selects the location element Object Location UP DOWN Selects number of selected location element 1 to 199 Saves test results to the selected location and returns to the MEM measuring menu Function selector l TEST Exits back to main function menu Notes a The instrument offers storing the result to the last selected location by default a Press the MEM key twice to store the measurement to the same location 6 4 Recalling test results Press shortly the MEM key in a main function menu when there is no result available for storing no MEM indication Keys in recall memory menu data structure selected TAB Selects the location element Object Location UP DOWN Selects number of selected location element MEM Opens last stored result in selected location Function selector TEST Exits back to main functio
18. e to earth connection and equipotential bonding continuous resistance measurement UP DOWN Selects sub function in selected measurement function TAB Selects the test parameter to be set or modified TEST Runs selected test measurement function MEM Stores measured results recalls stored results CAL Compensation of test leads resistance Keys in test parameter field UP DOWN Changes the selected parameter TAB selects the next measuring parameter FUNCTION SELECTOR Toggles between the main functions MEM stores measured results recalls stored results General rule regarding enabling parameters for evaluation of measurement test result No limit values Parameter Results will be marked as PASS or FAIL in accordance with Value selected limit see Chapter 5 for more information about the operation of the instrument test functions 18 MI 3121H Smartec 2 5 kV Insulation Continuity Settings 4 2 Settings The instrument offers additional functions by the following combinations of the keys during power on Combinations are UP ON Opens settings menu TAB ON Resets the instrument to initial factory settings Different instrument options can be set in the settings menu Options are a Setting the instrument to initial values a Setting the date and time Figure 4 1 Options in Settings menu Keys UP DOWN selects appropriate option TEST Enters selected option Function selector Exits back to main
19. ector using the PS 2 RS232 serial communication cable USB communication connect a PC USB port to the instrument USB connector using the USB interface cable owitch on the PC and the instrument Run the EuroLink PRO program The PC and the instrument will automatically recognize each other The instrument is prepared to download data to the PC The program EuroLink PRO is a PC software running on Windows 95 98 Windows NT Windows 2000 Windows XP Windows Vista Windows 7 Read the file README TXT on CD for instructions about installing and running the program Note a USB drivers should be installed on PC before using the USB interface Refer to USB installation instructions available on installation CD 36 MI 3121H Smartec 2 5 kV Insulation Continuity Maintenance 7 Maintenance Unauthorized persons are not allowed to open the Smartec 2 5 kV Insulation Continuity instrument There are no user replaceable components inside the instrument except the fuse and battery under rear cover 7 1 Fuse replacement There is a fuse under back cover of the Smartec 2 5 kV Insulation Continuity instrument a F1 M 0 315 A 250 V 20x5 mm This fuse protects internal circuitry for continuity functions if test probes are connected to the mains supply voltage by mistake during measurement Warnings m A Disconnect all measuring accessory and switch off the instrument before opening battery fuse compartment cover hazardous voltage
20. es not need any special training except reading this instruction manual to operate the instrument In order for operator to be familiar enough with performing measurements in general and in typical applications it is advisable to read Metrel handbook Guide for testing and verification of low voltage installations The instrument is equipped with all necessary accessories for comfortable testing MI 3121H Smartec 2 5 kV Insulation Continuity Warnings and notes 2 Safety and operational considerations 2 1 Warnings and notes In order to reach high level of operators safety while carrying out various tests and measurements using Smartec 2 5 kV Insulation Continuity test equipment as well as to keep the equipment undamaged it is necessary to consider the following general warnings E Q Q L AN Warning on the instrument means Read the Instruction manual with special care to safety operation The symbol requires an action If the test equipment is used in a manner that is not specified in this user manual the protection provided by the equipment might be impaired Read this user manual carefully otherwise use of the instrument may be dangerous for the operator for the instrument or for the equipment under test Do not use the instrument and accessories if any damage is noticed In case a fuse has blown follow the instructions in this manual to replace it Consider all generally known precautions in order to avoid risk
21. ies for specific measurements The table below presents standard and optional accessories required for specific measurement The accessories marked as optional may also be standard ones in some sets Please see attached list of standard accessories for your set or contact your distributor for further information Function Suitable accessories Optional with ordering code A Insulation resistance a 2 5kV test lead 2x 1 5 m INS a 2 5 kV test lead 3 x 1 5 m A 1319 a 2 5kV test lead 2 x 1 5 m RLOW a Test lead black 4 m A 1154 a 2 5kV test lead 2 x 1 5 m CONT a Testlead black 4 m A 1154 Voltage frequency a 2 5kV test lead 2x 1 5 m 41 MI 3121H Smartec 2 5 kV Insulation Continuity Accessory for specific measurements 42 MI 3121H Smartec 2 5 kV Insulation Continuity Accessory for specific measurements 43 MI 3121H Smartec 2 5 kV Insulation Continuity Accessory for specific measurements 44
22. inside a Replace blown fuse with original type only otherwise the instrument may be damaged and or operator s safety impaired Position of fuses can be seen in Figure 3 4 in chapter 3 3 Back panel 7 2 Cleaning No special maintenance is required for the housing To clean the surface of the instrument use a soft cloth slightly moistened with soapy water or alcohol Then leave the instrument to dry totally before use Warnings a Do not use liquids based on petrol or hydrocarbons a Do not spill cleaning liquid over the instrument 7 3 Periodic calibration It is essential that the test instrument is regularly calibrated in order that the technical specification listed in this manual is guaranteed We recommend an annual calibration Only an authorized technical person can do the calibration Please contact your dealer for further information 7 4 Service For repairs under warranty or at any other time please contact your distributor 3 MI 3121H Smartec 2 5 kV Insulation Continuity Technical specifications 8 Technical specifications 8 1 Insulation resistance Insulation resistance nominal voltages 100 Vpc and 250 Vpc Measuring range according to EN61557 is 0 15 MQ 999 9 MQ Measuring range MQ Resolution MQ 0 00 19 99 5 of reading 3 digits 20 0 199 9 10 of reading 200 999 1 T 3204 of reading Insulation resistance nominal voltages 500 Vpc 1000 Vpc and 2500 Vpc Measuring range according to
23. ired to eliminate the influence of test leads resistance and the internal resistances of the instrument on the measured resistance The lead compensation is therefore a very important feature to obtain correct result Once compensation has been performed the compensation symbol CAL appears on the screen Each of RLOW and CONT has each own compensation Circuits for compensating the resistance of test leads extension lead Figure 5 16 Shorted test leads Compensation of test leads resistance procedure a Select the any continuity function using the function switch a Connect test lead to the top of the instrument and short the test leads together see Figure 5 16 Press TEST to perform resistance measurement Press the CAL key to compensate leads resistance Note a The limit value for lead compensation is 5 Q 29 MI 3121H Smartec 2 5 kV Insulation Continuity Voltage and Frequency 5 3 Voltage and frequency In the VOLT menu the measured voltage and frequency are displayed see 4 7 Function selection for instructions on key functionality Pe mnm ee E GRON GNU GNU a Figure 5 17 Voltage and frequency display Circuits for voltage measurement Ro J m _ US i Figure 5 18 Connection of 2 wire test lead 30 MI 3121H Smartec 2 5 kV Insulation Continuity Voltage and Frequency Voltage measurement procedure Select the VOLT function Connect test lead to the instrument
24. l be lost 20 MI 3121H Smartec 2 5 kV Insulation Continuity Insulation resistance 5 Measurements 5 1 Insulation resistance 5 1 1 Insulation resistance measuring procedure Insulation resistance measurement is performed in order to assure safety against electric shock through insulation It is covered by the EN 61557 2 standard Typical applications are a Insulation resistance between conductors of installation a Insulation resistance of non conductive rooms walls and floors a Insulation resistance of ground cables a Resistance of semi conductive antistatic floors see chapter 4 7 Function selection for instructions on B 5 un E key functionality E k MO NS EV 1 amp 0M INS m m i We ee wc Figure 5 1 Insulation resistance Test parameters for insulation resistance measurement Test voltage 100 V 250 V 500 V 1000 V 2 5 E 21 MI 3121H Smartec 2 5 kV Insulation Continuity Insulation resistance Test circuits for insulation resistance closed eeee P switches Y 1 1 INN PEDE mains voltage switched off B loads disconnected T mms E L3 s c 5 j L LL mains voltage B nm T1 2 HEN ee HO E c eu T switched off switches Y 1 1 i loads disconnected Figure 5 3 Connection of optional 3 wire test lead A 1319 Insulation resistance measuring procedure Select the kj function using the BACK NEXT keys
25. lution Q 0 00 19 99 0 01 3 2 z reading 3 20 199 41 io of M Open circuit voltage 6 5 Voc 9 Voc Measuring current min 200 mA into load resistance of 2 Q Test lead compensation up to 5 O The number of possible tests 2000 with a fully charged battery Automatic polarity reversal of the test voltage 8 2 2 Resistance CONT Measuring range Q Resolution Q 0 0 19 9 041 s 5960freading 3 digits 20 1999 Ts 10 of reading Open circuit voltage 6 5 Vpc 9 Voc Short circuit current max 8 5 mA Test lead compensation up to 5 O 8 3 Voltage frequency 8 3 1 Voltage 3 96 of reading 3 digits mieu IVDO NT True r m s trms Nominal frequency range 0 Hz 15 Hz 500 Hz 8 3 2 Frequency Measuring range Hz Resolution Hz 0 00 19 99 20 0 199 9 0 2 of reading 1 digit 200 500 Nominal voltage range 10V 550 V 39 MI 3121H Smartec 2 5 kV Insulation Continuity Technical specifications 8 4 General data Power supply voltage 9 Vpc 6x1 5 V battery or accu size AA ODE ATOM er typical 13 h Charger socket input voltage 12V 10 Charger socket input current 400 mA max Battery charging current
26. n menu Keys in recall memory menu measurements selected UP DOWN Displays next previous stored measurement MEM Returns to main MEM menu Function selector TEST Exits back to main function menu NLLLLL LLL LLL LLL ww UJU uomunmm m n m GGG GG eee Figure 6 2 Example of recalled measurement result 33 6 5 Clear recall options Press the MEM key in a main function menu for few seconds to activate possibility for clearing or recalling results Figure 6 3 Entering menu for recall clear options on stored results Keys in recall clear memory menu UP Opens menu to clear result at currently selected location DOWN Opens menu to clear all results Confirms selected clear option CLR All see 6 5 1 CLR see TEST 6 5 2 Opens last selected location to recall the results or change location see 6 4 Function selector MEM TAB Exit back to main function menu 6 5 1 Clearing complete memory content After selection of CLEAR ALL the instrument will display the following Initial display to clear all memory Required confirmation to clear all Figure 6 4 Clear all memory Keys in clear all memory menu TEST Confirms clearing of complete memory content Function selector TAB Exits back to main function menu without changes 34 MI 3121H Smartec 2 5 kV Insulation Continuity Clear Recall Figure 6 5 Clearing memory in progress 6 5 2 Clearing individual results at selected location
27. ng current The measurement is performed continuously without polarity reversal The function can also be applied for testing continuity of inductive components 2 MI 3121H Smartec 2 5 kV Insulation Continuity Continuity Test circuit for CONT resistance measurement Figure 5 14 2 wire test lead application Continuous resistance measurement procedure select continuity function a1 amp e or ela using the BACK NEXT keys of function selector oet sub function CONT Enable and set the limit optional Connect test lead to the instrument Compensate test leads resistance if necessary see section 5 2 3 Disconnect from mains supply and discharge the object to be tested Connect test leads to the tested object see Figure 5 14 Press the TEST key to begin performing a continuous measurement E Press the TEST key to stop measurement After the measurement is finished store the result optional DOODO OOOD O T A M Pd Figure 5 15 Example of continuous resistance measurement Displayed result Hesistance Note a Continuous buzzer sound indicates that measured resistance is less than 2 Q 28 MI 3121H Smartec 2 5 kV Insulation Continuity Continuity 5 2 3 Compensation of test leads resistance This chapter describes how to compensate for test leads resistance in both continuity functions RLOW and CONT Compensation is requ
28. nstrument close to tested item 0O OIA OMN i 8 BR Hm ur argo ToA TE wid 4 vVvV3ZIsS vv3azis ill SIZEAA T SIZEAA Figure 3 4 Battery compartment Legend 1 Battery cells oize AA alkaline or rechargeable NiMH NiCd 2 Serial number label 3 Fuse M 0 315 A 250 V 13 MI 3121H Smartec 2 5 kV Insulation Continuity Display organization 3 4 Display organization RLOW Function field kGM Y IHBB X Result field Analog results display INS 1L eQ C LJ 100v 25ov sov kv J 2 5kv Test voltage selection 5 field Figure 3 5 Typical display 4 Aza Message field CAL LIM MEM RCL LOC OBJ PI DAR I Hz IHBB kV Auxiliary monitor Battery indication amo 3 4 1 Function field The function field displays currently selected function INS Selected function is Insulation resistance CONT Selected function is 7 mA Continuous resistance measurement RLOW Selected function IS 200 mA Resistance to earth connection and equipotential bonding measurement VOLT selected function is Voltage frequency measurement 3 4 2 Result fields Measuring results are displayed in numeric and analog representation with evaluation result in case the limits are selected 14 MI 3121H Smartec 2 5 kV Insulation Continuity Display organization kGMQ j V Numeric readout of measurement result v Measurement result is inside pre set limits PASS X Measurement result i
29. of function selector Set the required test voltage Press the TAB key then use arrows Enable and set limit value optional Disconnect tested installation from mains supply and discharge insulation as required Connect test lead to the top of the instrument and to the item to be tested see Figure 5 2 and Figure 5 3 Press the TEST key to perform the measurement double click for continuous measurement and later press to stop the measurement After the measurement is finished wait until tested item is fully discharged Store the result by pressing the MEM key optional 22 MI 3121H Smartec 2 5 kV Insulation Continuity Insulation resistance Figure 5 4 Example of insulation resistance measurement result Displayed results Insulation resistance value Insulation resistance analog presentation Test voltage actual value Test voltage nominal value 5 1 2 The DAR and PI diagnostic The DAR and PI diagnostic is automatically calculated during insulation measurements DAR is ratio of Insulation Resistance values measured after 15s and after 1 minute The DC test voltage is present during the whole period of the measurement When internal timer reaches 15 seconds Hjso 5s is stored into the internal memory short beep is generated When internal timer reaches 1 minute Fiso 1min is stored into the internal memory short beep is generated The DAR factor is calculated and stored into the internal mem
30. ory The DAR icon becomes also active to signalize during measurement that DAR factor has been calculated I min DAR ie Riso 15s PI is the ratio of Insulation Resistance values measured after 1 minute and after 10 minutes The DC test voltage is present during the whole period of the measurement When internal timer reaches 10 minute R so 10min is stored into the internal memory short beep is generated The PI factor is calculated and stored into the internal memory The PI icon becomes also active to signalize during measurement that PI factor has been calculated R 10 min PI R 1 min It is possible to switch between DAR PI and insulation results during measurement by pressing the TAB key See the Figure 5 5 and Figure 5 6 23 MI 3121H Smartec 2 5 kV Insulation Continuity Insulation resistance gm eee eee aed emeneneienetemeemeleme sees ametenetemerameame aera came ametenetameteme emer aee cen ameaneemeameted 00 0 0 0 ee ee ee ee aus i 20 kd PU RE Inn ns Inn IUD gt IUD gt ee Gay WENN Figure 5 5 DAR result displayed during Figure 5 6 PI result displayed during measurement result flashing measurement result flashing After measurement is finished it is possible to switch between DAR PI also R60 and insulation results R60 is the resistance value measured 1minute 60 seconds after start of the measurement Simply keep pressing few seconds the TAB key to enter to the
31. required LIE r1 Locked high backlight intensity UN r 1 sub result in RLOW function re 2 sub result in RLOW function FUS Fuse F1 has blown or has not been inserted CONTINUITY function rES Setting of limit Resistance value 3 4 7 Backlight With the BACKLIGHT key the backlight can be adjusted Click Toggle backlight intensity level Brascad for 1 6 Locks on high backlight It keeps until power off or next click on the key BACKLIGHT 16 MI 3121H Smartec 2 5 kV Insulation Continuity Instrument set and accessories 3 5 Instrument set and accessories 3 5 1 Standard set a Instrument MI 3121H a NIMH battery cell type AA 6 pcs a Instruction manual a Power supply adapter a Calibration certificate a CD with instruction manual and a 2 5kVtestlead 2x 1 5 m Guide for testing and verification of a Test probe 2 pcs low voltage installations handbook a Crocodile clip 2 pcs a Softhand strap 3 5 2 Optional accessories oee the attached sheet for a list of optional accessories that are available on request from your distributor 17 MI 3121H Smartec 2 5 kV Insulation Continuity Function selection 4 Instrument operation 4 1 Function selection For selecting test function the FUNCTION SELECTOR shall be used Keys Select test measurement function FUNCTION a lt VOLT gt Voltage and frequency and phase sequence SELECTOR a INS Insulation resistance measurement BACK NEXT a RLOW CONT Resistanc
32. s out of pre set limits FAIL BAN a NNNM Analog presentation of measured result N NN 3 4 3 Message field In the message field different warnings and messages are displayed A Warning Read the User Manual with special care Warning Dangerous voltage is applied to the test terminals Z Measurement is implemented CAL Test leads resistance in CONTINUITY tests is compensated LIM Indicates that limit value can be set MEM Offers storing of measurement result RCL Indicates that recall memory is active LOC Indicates location number in installation structure OBJ Indicates object number in installation structure PI Indicates Polarization Index result in the Insulation function DAR Indicates Dielectric Absorption Ratio result in the Insulation function 3 4 4 Auxiliary monitor The monitor shows additional result test parameter or message 15 MI 3121H Smartec 2 5 kV Insulation Continuity Display organization 3 4 5 Battery indication In the menu line the name of the selected function is displayed Additional information about active cursor TEST keys and battery condition are shown B Battery capacity indication Low battery Battery is too weak to guarantee correct result Replace or recharge the battery cells ll Recharging in progress moving segments if power supply adapter is connected 3 4 6 Other messages HHr HW version of the instrument SUF Version of built in FW Err Service intervention
33. sceseus tineteustateGetstaeeGennddapaeisdadesniaducnasas ta aper estatuto x aad vatrds 24 5 2 Resistance of earth connection and equipotential bonding 26 5 2 1 RLOW 200 mA resistance measurement eeeeeenrmme 26 5 2 2 Continuous 7 mA resistance measurement CONT esseeeeeeee 27 5 2 3 Compensation of test leads reSiStANCe ccccccseeccseeeeeeeeeseeeeseeeeeeeeeseeeeeas 29 5 9 Voltage and IrequeDQoy uiii eue end e ena edt re ese va pae leo Var do dre Leto ev pu 30 AME ICW eme 32 6 1 Memory OFgahlzallOEisssusssevsvavscuvapui poa ripa Ern riar o vaF rar EST EANES irrar roi Daci pas pav Pado 32 SE MENS ESPERE or er a eee seo Snes ee ete 32 63 IONN tesETesbillS utendi eto dede edd eats eats eae ia dus 33 0 4 Recalling test VESUNS ziii ix ag des ver asino rr ce des En er edes a A MB e 33 Oo SUPCR NET USE 34 6 5 1 Clearing complete memory CONTENL cccceeccceececeeeeceeeeceeeeceeeessueeeseeenees 34 6 5 2 Clearing individual results at selected location 35 GIG GoIDnmu hlioQgil9fi sese aere stes avri reip regente EE 36 F Irlarniec 37 Fel IFUSC FE DIACCIIG TATUM 37 MEL eT 37 MI 3121H Smartec 2 5 kV Insulation Continuity Table of contents Tio Penodi CaO all e a 37 LA O
34. t otarts stops a measurement Modifies selected parameter otore recall clear tests in memory of instrument Select test function Changes backlight level Switches the instrument power on or off The instrument automatically turns off 15 minutes after the last key was pressed Compensates test leads resistance in RLOW and CONT functions Selects the parameters in selected function Indicate acceptance of result 11 MI 3121H Smartec 2 5 kV Insulation Continuity Connector panel 3 2 Connector panel Figure 3 2 Connector panel Legend Test connector Measuring inputs outputs connection of measuring cables Protects from simultaneous access to test connector and power 2 Protection cover oor Supply adapter socket communication connectors 3 Charger socket Connection of power supply adapter 4 USBconnector Communication with PC USB 1 1 port 5 PS 2 connector Communication with PC serial port Warnings a Maximum allowed voltage between any test terminal and ground is 600 V a Maximum allowed voltage between test terminals is 600 V a Maximum short term voltage of external power supply adapter is 14 V 12 MI 3121H Smartec 2 5 kV Insulation Continuity Back site 3 3 Back panel Figure 3 3 Back site Legend oide belt Battery compartment cover Fixing screw for battery compartment cover Back panel information label Holder for inclined position of the instrument Magnet for fixing i
35. wound components like transformer or motor windings is possible only in continuous function due to great influence of the winding inductance MI 3121H Smartec 2 5 kV Insulation Continuity Battery and charging 2 2 Battery and charging The instrument uses six AA size alkaline or rechargeable Ni Cd or Ni MH battery cells Nominal operating time is declared for cells with nominal capacity of 2100 mAh Battery condition is always present on the display when the instrument is turned on In case the battery is weak the instrument indicates this as shown in Figure 2 1 This indication appears for a few seconds and then the instrument turns itself off bHE Figure 2 1 Discharged battery indication The battery is charged whenever the power supply adapter is connected to the instrument Internal circuit controls charging assuring maximum battery lifetime The power supply socket polarity is shown in Figure 2 2 Figure 2 2 Power supply socket polarity The instrument automatically recognizes the connected power supply adapter and begins charging See the Figure 2 3 Symbols ls Indication of battery charging Figure 2 3 Charging indication m A Before opening battery fuse compartment cover disconnect all accessories connected to the instrument and switch off the instrument a Insert cells correctly otherwise the instrument will not operate and the battery could be damaged a Remove all battery cells from the battery
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