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AEMC Model 6550 Megohmmeter Manual PDF
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1. 10 000V Range Megohmmeter Models 6550 6555 15 000V Range 16000 14000 12000 10000 8000 6000 4000 2000 10 k 100 k 1M 10M 100 M 16 106 100 G 1T 10T 100 T 7 2 4 DAR PI and DD m Calculation of the DAR and PI terms Measurement Range 0 02 to 50 00 Resolution 0 01 Accuracy x 596 1ct m Calculation of the DD term Measurement Range 0 02 to 50 00 Resolution 0 01 Accuracy 10 1ct 7 2 5 Capacitance Capacitance measurement This measurement is made following the discharging of the element tested after each measurement Measurement Range 0 005 to 9 999uF 10 00 to 49 99uF Resolution 1nF 10nF Accuracy 10 1 ct 10 specified only for a test voltage 2500V Megohmmeter Models 6550 6555 57 7 3 Power Supply The instrument is powered by two rechargeable 9
2. mands The buttons and the rotary switch are inactive except for stopping the instrument OFF setting E REMOTE ADJUSTABLE VOLTAGE 90 V Input voltage 0 1 V AC Frequency 0 2 Hz Input current 11 56 pA Date 2011 05 24 Time 15 31 6 3 Megohmmeter Control Panel 6 3 1 Opening the Control Panel To open the Megohmmeter Control Panel m Double click the Megohmmeter icon that was created during installation located on the desktop m The Megohmmeter Control Panel window will appear For complete information on using the Megohmmeter with DataView refer to the Help Menu within the Megohmmeter Control Panel in DataView ule Megohmmeter Models 6550 6555 51 7 SPECIFICATIONS 7 1 Reference Conditions Influence Quantities Reference values Temperature 23 x 3 C Relative Humidity 45 to 5596 RH Supply Voltage 9 to 12V Frequency Range DC and 15 3 to 65Hz Capacitance in Parallel on Resistance OuF Electric Field null Magnetic Field lt 40A m The inherent accuracy is the error specified for the reference conditions The operating accuracy includes the inherent uncertainty plus variations of the quantities of influence supply voltage temperature interference etc as defined in standard IEC 61557 7 2 Electrical Specifications 7 2 1 Voltage Measurement Range 1 0 to 99 9V 100 to 999V 1000 to
3. FEIER BUON Em 18 24 7 Lco MP ERE 19 3 INSTRUMENT CONFIGURATION 1 nenne neon nun nunnunuuaunuunsunsusessessiseiss ZO 3 1 Adjusting the Brightness and Contrast auc rite eva eta cratire a 20 3 2 Configuring the Instrument SETUP ini do 20 3 2 1 Configuring the Instrument using the SET UP Function seen 20 3 2 2 Gonfigurable Parameters iin ignita da nied IUE RR Pace ER bc in dd deu dd Ada on od ER vire dd tem 21 3 2 3 Resetting the Default Parameters usse essices tla io Re een Eee Et eta Pepe uc EE E QUE Iu dd Rum Ma Ke pEE 21 3 2 4 Measurement Parameters iioii irte sad xc add stats rara a RU RU si 22 3 2 5 Adjustment OF the Test Volldgibs 225 o vcd dies tasa seta pore ed suds faded lar a ads uate adi 23 3 2 6 Adjustment of the Alarm Thresholds sssssssssssssssssseseeesee nn nn nnn 24 4 1 Chargingthe Batterie e ENTER 25 4 2 Usagi Leds sii IE ASS AAA a reia 26 4 3 AC DC Voltage Measurerrient uiuo id a a a aden adetenae eas 26 4 4 Insulation MeasurementS oooooocccccccnncnonnnononononononnnnnnnn ocn n cnn nnn nnt nennt nennen nnns nnns nnns nsns nnne sess nnns ness sns snis 27 4 4 1 Description of the Measurement Principle eese nana 27 2 Megohmmeter Models 6550 6555 6 44 2 Usinga Fixed Voltage usura di doi sa 28 4 4 3 Using a Variable Voltages oira ia aa aaa ada aaar dagen rapa Late Ed 28 4 4 4 Using a Voltage Ramp ii ccc aee o a exe p ro
4. OFF Use the A Y arrow buttons to choose the preset step type of test m Step function 1 50 to 500V m Step function 2 500 to 5000V m Step function 3 1000 to 10 000V The voltage and the duration of each step can be programmed using the CONFIG button see 2 4 3 30 Megohmmeter Models 6550 6555 4 4 6 Connection Depending on the measurements to be made there are three ways of connecting the instrument In all cases disconnect the device to be tested from the supply line m Low Insulation Connect the red high voltage lead between earth and the terminal of the instrument Connect the black high voltage lead between one phase of the motor and the terminal of the instrument m High Insulation For very high insulation values connect the small blue high voltage lead between the rear pick up of the black lead and the G terminal in this case the shield of black lead will be connected to the ground of the instrument which helps to avoid leakage current and capacitive current effects This reduces the influence of the operator s hands on the test leads and gives a more stable measurement Megohmmeter Models 6550 6555 31 m Cable Connect the red high voltage lead between the braid and the terminal of the instrument Comnect the black high voltage lead between the core and the terminal of the instrument Comnect the blue high voltage lead between the insulation and the G terminal of the instrument Outer Insu
5. StepV Variable Auto DAR PI DD USB w DataView Software Cat 2130 32 Both models include set of 3 color coded red blue black 9 ft 15kV integral leads and alligator clips 1000V CAT IV one 15kV jumper lead blue set of 2 color coded test probes red black 1000V CAT IV optical USB cable 115V US power cord 9 6V rechargeable NiMH batteries small classic tool bag DataView soft ware and a user manual 1 1 1 Accessories and Replacement Parts Replacement Small classic tool bag eese nennen Cat 2133 72 Replacement Optical USB cable wise ari Ee a diel GV SE eub cda menat Cat 2135 41 Replacement One 9 6V NiMH battery two are required cccccccononococcccncnonnnnononncncnnnnnnnnnnnnnnos Cat 2140 19 Replacement Set of 3 color coded red blue black 9 ft 15kV integral leads and alligator clips 1000 V CAT Wide Td Re qui tna ES depen thea E ERE lid Cat 2151 14 Replacement 15kV jumper lead blue cccoccccnonccccnnncccnonancnoncnnncccnananononcnnnnnnnnnnrnnnnn cnn nnmnnn nenen Cat 2151 15 Replacement Set of 2 color coded red black test probes 1000V CAT IV Cat 2152 23 Replacement 115V US power cord cocococccccccnnccnncconcnoncnnnnnncnnncnnncnnncnnnnnnncnnnnnnnnnnnnnnnnnnncnnnnnnnnonennnnns Cat 5000 14 Lead Set of 3 color coded red blue black 9 ft shielded safety leads with hippo clips 15kV Cat 2151 17 Lead One shi
6. 0101 2011 05 26 09 04 500V 4 Store Samples Yes O Sample Time m s Min MEM The graph of the measurement can then be displayed by a single press on the GRAPH button see 2 4 5 If this is not required set Store Samples to OFF If Store Samples are set to Yes the Sample Time can be set using the gt andA Y arrow buttons m The default sampling time the time difference between two stored samples is the minimum meaning that all samples acquired during the measurement are recorded 42 Megohmmeter Models 6550 6555 m The sampling time can be set to Auto automatic in which case the instrument itself determines the samples necessary for the plotting of the measurements while using the least possible memory If the measurement does not vary it will take only one value giving a perfectly flat curve This value is recommended to optimize memory use The sampling time can also be programmed between 1 and 25 seconds m The longer the measurement the longer the sampling time can be For example on a measurement lasting 10 minutes the sampling time can be 10 seconds giving 60 points for the graph which is sufficient m Again the more stable the measurement the longer the sampling time can be The more unstable the measurement the shorter the sampling time must be in order to correctly display variations of the insulation resistance Press the MEM button one last time to record the measurement The instrument confirm
7. 1300 5000 10 000 15 000 I mA 0 22 0 46 0 93 1 07 1 07 5 5 1 0 5 If the current is limited in SET UP the values mentioned above that exceed the limit will be lowered m Fixed Test Voltage Test Voltage V 500 1000 2500 5000 10 000 15 000 Specified 10 to 999kQ measurement range 1 000 to 3 999MO 4 00 to 39 99MO 40 0 to 399 9MO 400 to 3 999GQ 4 00 to 39 99GO Resolution 1kQ 10kQ 100kQ 1MQ 10MQ Accuracy 5 3cts Operating error 10 6cts 500 1000 2500 5000 Test Voltage V 40 000 15 000 gt 1000 gt 2500 gt 5000 Specified 400 to 999GQ measurement range 40 0 to 399 9GQ 1 000 to 1 999TO 2 000 to 3 999TO 4 00 to 10 00TQ 4 00 to 15 00TQ Resolution 100MQ 1GQ 1GQ 10GQ 10GQ Accuracy 15 10cts 20 10cts Operating error 20 15cts 30 15cts Test Voltage V gt 10 000 15 000 6555 only Specified measurement range 4 00 to 25 00TQ 4 00 to 29 00TQ Resolution 10GQ 10GQ Inherent accuracy 20 10cts 20 10cts Operating error 30 15cts Megohmmeter Models 6550 6555 53 m Variable test voltage Minimum resistance measured 10kQ Maximum resistance measured to be interpolated from the values in the tables of fixed test voltages above The inherent uncertainty depends on the test voltage and on the resistance measured It can be interpolated from the tables of fixed test voltag
8. 500V 978 nA Elapsed Time 00 00 12 CONFIG l Range Auto 2 Disturbance Level Low CONFIG m Use the 4 gt A Y arrow buttons to modify the measurement current range Changes are applied and saved immediately after entry m Confirm and exit by pressing the CONFIG button again m If the range is fixed the RANGE symbol is displayed m The choice remains active until the rotary switch is moved to another position During the measurement it is also possible to turn the analog filter ON OFF Disturbance Level For more details refer to the previous section In the case of a variable test voltage the voltage set is also displayed and can be modified during the measurement RANGE 502 MO 2805 V Set 2300V 4 61 pA Elapsed Time 00 00 12 CONFIG I Range Fix 2 Disturbance Level Low Adjustable Voltage 2300 V Megohmmeter Models 6550 6555 15 2 4 4 DISPLAY Button This button is used to browse through the various accessible screens containing all information available before during or after the measurement Depending on the measurement mode and the configuration chosen CONFIG button the screens are different 2 4 5 GRAPH Button During the measurement and at the end of each measurement pressing the GRAPH button displays a graphical presentation of the measurement results On the first screen the insulation resistance vs time R t and the voltage vs time V t are shown Minimum and maximu
9. Hz Input current 24 6 nA Date 2011 05 23 Time 10 31 The High setting is recommended when measurements are made in the presence of strong electromagnetic fields at the network frequency for example near high voltage lines m Inthe V FIXED and V VAR Modes the alarm threshold Use the A V arrow buttons to set the alarm threshold The alarm threshold can also be set in SET UP see 8 3 2 The ALARM symbol is displayed if the alarm is enabled FIXED VOLTAGE soov Kololo ATA 2500 v Input voltage 10V AC Frequency 50 0 Hz Input current 24 6 NA Date 2011 05 23 Time 10 31 14 Megohmmeter Models 6550 6555 m Inthe V RAMP mode the programming of the ramp Set Ramp Function Use the A Y arrow buttons to go to Set Ramp Function the instrument displays the voltage ramp values programming screen This programming can also be done in SET UP see 3 2 m Inthe V STEP mode the programming of the step Set Step Function Use the A Y arrow buttons to go to Set Step Function the instrument displays the voltage step values programming screen This programming can also be done in SET UP see 3 2 2 4 3 2 During the Measurement During the measurement for V VAR and V FIXED the CONFIG button is used to choose the current range automatic default or fixed For more details refer to the previous section m Once the measurement has started press the CONFIG button The following screen appears tx 502 MO 502 V Set
10. When the measured resistance is low the output voltage decreases because of a voltage drop on a series resistance of 234kQ internal to the instrument For example if a test with 1000V should be performed use the V VAR function and adjust V so that the dis played voltage during measurement is 1000V set voltage will be higher by a term Im 234kO see 2 4 3 2 4 4 3 Using a Variable Voltage Set the switch to the V VAR position The following screen appears BURN ADJUSTABLE VOLTAGE 50 V Input voltage 0 1 V AC Frequency 0 2 Hz Input current 11 56 pA Date 2011 05 24 Time 15 31 There are already 3 preset voltages that can be modified in SET UP see S 3 2 Use the A Y buttons to select one of them m Adjustable Voltage 1 50V m Adjustable Voltage 2 800V m Adjustable Voltage 3 7000V Otherwise use the gt buttons to go to the voltage value then use the A Y buttons to adjust the value of the test voltage The adjustment is in 10V steps up to 1000V and in 100V steps above 1000V Keeping the buttons pressed will speed up the adjustment 28 Megohmmeter Models 6550 6555 BURN ADJUSTABLE VOLTAGE 750 V Input voltage Frequency Input current Date 2011 05 24 Time 15 31 4 4 4 Using a Voltage Ramp This test is based on the principle that an ideal insulation produces the same resistance whatever the test voltage applied Any negative variation ofthe insulation resistance ther
11. a fixed test voltage of 500V 1000V 2500V 5000V 10 000V or 15 000VDC measurement at an adjustable test voltage from 40 to 15 000VDC measurement with a voltage ramp selectable in the ranges from 40 to 1100V or from 500 to 15 000V measurement with a voltage in steps from 40 to 15 000V with up to 10 steps and dwell times non destructive Early Break test test stopped at a preset current Break at I limit or Burning calculation of the DAR Pl and DD dielectric discharge index quality ratios calculation of the temperature corrected resistance m measurement of the capacitance of the circuit tested m measurement of the residual current These megohmmeters contribute to the safety of electrical installations and equipment Their operation is managed by microprocessors that acquire process display and store the measurements They have many advantages such as digital filtering of insulation measurements measurement of the voltage programming of thresholds to trigger audible alarms time controlled measurements current limit programming plotting of resistance voltage and current vs time and current vs voltage R t V t I t and IV fuse protection with defective fuse indication automatic discharge of the test voltage at the end of the measurement provides operator safety auto power off mode to save battery power battery charge condition indication large graphical display with backlight capability data storage of me
12. been stopped the instrument discharges the device being tested in a few seconds For your safety therefore wait before disconnecting the leads Normally this happens rapidly and the user is unaware of it But if the load is highly capacitive the discharging time is longer In this case for as long as the voltage exceeds 25V the instrument indicates it on the display E BRK 995 MO A 502 V 503 nA Elapsed Time 00 01 20 DAR 30s 60s 1 00 PI 1 0m 10m Capacitance The DISPLAY button is used to look up all information available after the measurement This information depends on the type of measurement chosen see 2 4 4 In the case of a ramp or step measurement the measurement result is displayed as follows Test with programmed duration Value of the insulation resistance 5 03 G n Value of i bs voltage at the 516V 98 7 nA Current at the end of the measurement end of the measurement d Elapsed Time 00 01 40 Duration of the measurement AR difference of insulation AR 47 9 MO resistance between the AM 53 3 V resistance of the highest test AR R AV ppm V 9 Voltage coefficient in ppm V voltage and the resistance of the lowest test voltage Capacitance lt 1 nF Capacitance of the device tested AV difference between the highest and lowest test voltage Record the measurement and compare it to earlier measurements in order to assess the evolution of its
13. different times and temperatures Similarly measuring the humidity improves the correlation between the various measurements made on a given device Procedure m Make a measurement in V FIXED or V VAR mode m Press the TEMP button TEMPERATURE I2Air Temperature C Humidity Probe Temperature C Rc Reference Temperature C AT for R 2 C R measured Rc at C Megohmmeter Models 6550 6555 9 Use the gt A Y arrow buttons to enter the various parameters m Air Temperature the ambient temperature optional m Humidity the ambient relative humidity optional m Probe Temperature the temperature of the device tested If it has not warmed up during the measurement it is equal to the ambient temperature m Rc Reference Temperature the temperature to which the measured resistance will be referred m AT for R 2 the temperature variation known or estimated sufficient to halve the insulation resistance To facilitate the programming the instrument proposes default values The instrument then displays the insulation resistance referred to the reference temperature TEMPERATURE I3Air Temperature 23 C Humidity 4096 Probe Temperature 23 C Rc Reference Temperature 40 C AT for R 2 10 C R measured 5 00 GO Re at 40 C 1 529 GO If coefficient AT for R 2 is not known it can be calculated from a minimum of 3 measurements made on the same device at different temperatures Detai
14. in the appropriate date as indicated Date Received Date Calibration Due Chauvin Arnoux Inc d b a AEMC Instruments INSTRUMENTS www aemc com Thank you for purchasing a Megohmmeter Model 6550 6555 For best results from your instrument and for your safety read the enclosed operating instructions carefully and comply with the precautions for use These products must be only used by qualified and trained users Signifies that the instrument is protected by double or reinforced insulation CAUTION DANGER Read the User Manual Risk of electric shock The voltage at the parts marked with this symbol may be dangerous Refers to a type A current sensor This symbol signifies that application around and removal from HAZARDOUS LIVE conductors is permitted Refers to a type B current sensor Do not apply around or remove from HAZARDOUS LIVE conductors without additional protective means de energizing the circuit or wearing protec tive clothing suitable for high voltage work Important instructions to read and to fully understand Useful information or tip to read USB socket Ground Earth The CE marking guarantees conformity with European directives and with regulations covering EMC 9 QE e S PPE Chauvin Arnoux Inc d b a AEMC Instruments has adopted an Eco Design approach in order to design this instrument Analysis of the complete lifecycle has enabled us
15. or in operation the display indicates a one or two digit number error code This number identifies the anomaly and states what to do to put the instrument back into service m Errors 1 to 9 concern internal circuit board problems and require a repair by a qualified individual m Error codes 20 to 25 help the repair personnel locate a malfunction m If the recorded data is corrupted the only way possible to reuse the memory is to erase it completely see 8 5 3 2 The instrument reports this problem by displaying CLEAR MEMORY m All other errors require returning the instrument for repair see S 8 5 Megohmmeter Models 6550 6555 47 6 DATAVIEW SOFTWARE i For complete information on using the Megohmmeter with DataView refer to the Help Menu within the Megohmmeter Control Panel in DataView 6 1 Installing DataView DataView is a registered trademark of Chauvin Arnoux d b a AEMC Instruments DO NOT CONNECT THE INSTRUMENT TO THE PC BEFORE INSTALLING THE SOFTWARE AND DRIVERS Minimum Computer Requirements m Windows XP Windows Vista amp Windows 7 8 32 64 bit m 256MB of RAM for Windows XP 1GB of RAM for Windows Vista amp Windows 7 8 32 bit 2GB or RAM for Windows Vista amp Windows 7 8 64 bit m 80MB of hard disk space 200MB recommended m USB port Windows is a registered trademark of Microsoft Corporation in the United States and other countries USB Flash Drive Install 1 Insert the USB drive into a
16. temperature can be entered in the instrument and stored with the measure ment results The value of the test voltage is generally twice the voltage at which the object to be tested is used unless a standard stipulates otherwise For example for a motor that operates on a 230V supply the test will be performed at 500V 4 4 1 Description of the Measurement Principle The instrument generates a DC test voltage equal to the chosen nominal voltage VN between the and ter minals More precisely the value of this voltage depends on the resistance to be measured see the curves of 8 7 2 3 The instrument measures the voltage and the current between the two terminals and from them deduces R V I The instrument measures the external voltage present on the terminals It can make the measurement if the peak voltage is less than 0 4VN or 1000VAC maximum Beyond this value it does not make the measurement Megohmmeter Models 6550 6555 27 4 4 2 Using a Fixed Voltage Set the switch to the V FIXED position The following screen appears BURN FIXED VOLTAGE SORA VA 1000v SET UP Input voltage 10V AC Frequency 50 0 Hz Input current 24 6 pA Date 2011 05 23 Time 10 31 V RAMP V VAR V FIXED OFF Use the gt A Y buttons to select the test voltage 500V 1000V 2500V 5000V 10 000V or 15 000VDC The instrument generates exactly the selected voltage when the measured resistance is high
17. the insulation is deteriorated even partially must be set aside for repair or scrapping Use only the leads and accessories supplied Using leads or accessories of a lower voltage or category reduces the voltage or category of the combined instrument and leads or accessories to that of the leads or accessories Use personal protection equipment systematically Keep your hands away from the terminals of the instrument When handling the leads test probes and alligator clips keep your fingers behind the physical guard As a safety measure and to avoid interference do not move and do not handle the leads during measurements Definition of Measurement Categories CAT m CATIV 3 Phase at utility connection outdoor conductors Origin of installation or where low voltage connection is made to utility power Electricity meters primary overcurrent protection equipment Outside and service entrance service drop from pole to building runs between meter amp panel Overhead line to detached building underground line to well pump m CAT Ill 3 Phase distribution including single phase commercial lighting Equipment in fixed installations such as switchgear and polyphase motors Bus and feeder in industrial plants Feeders and short branch circuits distribution panel devices Appliance equipment outlets with short connections to service entrance m CAT Il Single phase receptacle connected loads Appliances por
18. the voltages and the durations of the steps Pressing the gt button opens the following screen Press the DISPLAY button to view the rest of the steps Step 4 Ramp Functions Step 4 Ramp Functions Step Function 1 Step Function 1 Voltage Duration m s Step Voltage Duration m s 50 V 0 10 300 V 0 10 100 V 0 10 350 V 0 10 150 V 0 10 400 V 0 10 200 V 0 10 450 V 0 10 250 V 0 10 500 V 0 10 Total Run Time m s 1 40 Total Run Time m s 1 40 You can then set the voltage and duration of each of the 10 steps The total duration of the measurement Total Run Time is calculated by the instrument The adjustment range of the voltages is from 40 to 15 000V The duration of the steps ranges from zero or 0 01 to 99 59 If a duration is set to zero the time displayed is A duration below 30 seconds is not very useful because acquiring a stable resistance result requires some time If either a step voltage or a step duration is set to zero the step will be set to zero as a whole and will be skipped during the test Megohmmeter Models 6550 6555 23 Set Ramp Function 1 2 and 3 In the case of a measurement with a ramped voltage used to set the starting voltage the slope of the ramp and the final voltage Pressing the button opens the following screen Step amp Ramp Functions Ramp Function 1 Step Voltage Duration m s 3 Start 50 V 0 10 Ramp 0 10 End 100 V 0 10 Total Run Time m s 0 30 You can then set the vol
19. to switch on as long as the power cord is not connected m Aloss of the instrument s date and time 7 3 3 Optimize Battery Charging During charging the temperature of the battery rises substantially especially towards the end A safety device built into the battery checks constantly that the battery temperature does not exceed an acceptable maximum If this maximum is exceeded the charger switches off automatically even if charging is not complete Above 86 F 30 C it is not possible to charge the battery fully because the charging will cause overheating 7 3 4 Battery Life The mean battery life depends on the measurement and on how the device is used Test Voltage V 500 1000 2500 5000 10 000 15 000 Voltmeter Battery Life h 15 12 2 2 2 2 25 How long your device can operate when the battery is fully charged depends on several factors m The consumption of the device which depends on the measurements you make m The capacity of the battery is greatest when the battery is new and declines as the battery ages Here are a few ways to extend battery life between charges m Use the back lighting only when it is strictly necessary m Set the brightness of the back lighting to the lowest level at which you can still read the display unit m Enable the Auto Power OFF function see SET UP 3 2 n During insulation measurements conducted in MANUAL mo
20. will be necessary for your battery to recover 9596 of its capacity pie To make the best possible use of your battery and extend its effective service life m Only charge your instrument at temperatures between 32 and 86 F 0 and 30 C m Comply with the conditions of use defined in the operating manual m Comply with the storage conditions specified in the operating manual il Before first use charge and discharge the instrument one or tvvo cycles to ensure the proper level display Of the battery indicator Ld 8 2 Replacing the Battery The batteries can be replaced only by the manufacturer s service center or by an approved repair center WARNING Replacing the battery may result in the loss of the stored data Back up all stored data before sending the instrument in for repair To return the instrument for battery replacement see 8 5 When the repaired instrument is returned m Erase the memory completely see 8 5 3 2 to be able to use the MEM MR functions again m f necessary reset the date and time of the instrument see S 3 2 m Fully recharge the battery AEMC will not be held responsible for any accident incident or malfunction following a repair done other than by its service center or by an approved repair center 62 Megohmmeter Models 6550 6555 8 3 Replacing the Fuse If the GUARD FUSE message appears on the display unit the guard terminal fuse must be replaced The fuse can be
21. 0 0 Hz Input current 24 6 nA Date 2011 05 23 Time 10 31 m The Maximum Current Maximum Output Current This is the current not to be exceeded in any type of test In the test type Break at l limit the measurement is stopped if this value is reached Use the A Y arrow buttons to set it between 0 2 and 5mA for test types Burning and Break at I limit For test type Early break this value is fixed to 0 2mA m The Current Range l range This function is used to make measurements more rapidly when their order of magnitude is already known Use the A V arrow buttons to set the value to Auto or Range 1 2 or 3 Current range 1 2 3 Current 300NA 60nA lt I lt 50uA 10pA lt I lt 6mA For example for VN 10 000V 1 R gt 30GQ 2 200M9 lt R lt 16 6GQ 3 10MQ lt R lt 1 GQ Current range Resistance 10MQ because Imax 1mA at 10 000V The fixed current range remains active until the instrument is switched off Megohmmeter Models 6550 6555 13 The RANGE symbol is displayed FIXED VOLTAGE soov HEol0J0 JAVA 2500 v Input voltage 10VAC Frequency 50 0 Hz Input current 24 6 nA Date 2011 05 23 Time 10 31 m Interference of the Signal Disturbance Level Use the A V arrow buttons to set the value from Low to High The DH symbol is then displayed FIXED VOLTAGE soov M e jeje 2500 v Input voltage 10V AC Frequency 50 0
22. 2 3 2 Example of Display During Measurement The measurement smoothing filtering is active with a time constant of 20 seconds Value of the insulation resistance The voltage generated is x 0VDC and therefore dangerous True value of the test voltage Value of the insulation resistance on the bargraph DF 20s ALARM E 984 V Elapsed Time 00 00 48 ko 10 100 MO 1 GO 10 100 10 100 0 1 V DC 0 2 Hz 112 pA Time 10 31 7 303 3 MO 3 244 yA TO L3 2 3 3 Example of Display After Measurement The measurement range is fixed Value of the insulation resistance True value of the test voltage at the end of the measurement Subsidiary results vx RANGE 995 MO 528 V Elapsed Time 00 01 12 DAR 30s 60s 1 00 PI 1 0m 10m Capacitance 2 201 nF The 71 symbol indicates blinking If values are undetermined they are represented by The alarm is enabled No stop at current limit Battery power level status Measurement function Value of the next highest available test voltage Programmed duration of the test Date and Time Stop at current limit Current flowing between the terminals Elapsed time since the beginning of the measurement The insulation resistance is below the alarm threshold The type of measurement is a non destructive test Current at the end of the measurement Duration of the measurement Megohmmeter Mo
23. 200mm m Weight approximately 13 7 Ib 6 2kg 7 6 Safety Specifications m Electrical safety per IEC 61010 1 IEC 61557 parts 1 and 2 up to 10kV or VDE 0413 Double insulation Ol m Degree of pollution 2 m Voltage measurement category 1000V CAT IV or 2500V CAT I m Maximum voltage with respect to earth 1000Vrms CAT IV m Maximum voltage between guard terminal G and the terminal 30Vrms 7 6 1 Electromagnetic Compatibility Emissions and immunity in an industrial environment per IEC 61326 1 7 6 2 Mechanical Protections IP 65 according to IEC 60529 with the housing closed and IP 54 with the housing open IK 04 according to IEC 50102 60 Megohmmeter Models 6550 6555 7 7 Variations in the Domain of Use Influence Influence quantity Range of influence Quantity influenced Typical Maximum Battery voltage V 1ct 2cts EI 12y MO lt 1ct 3cts V 0 15 10 C 0 3 10 C 1ct Temperature 10 to 55 C MQ GQ 0 2 10 C 1 10 C 2cts U gt 7 5kV and R lt 10TQ 1 5 10 C 3 10 C 2cts V x 0 296 1 2cts Humidit 10 to 75 RH MQ 10kQ to 40GO 0 2 1 5cts di with t lt 35 C MQ 40GQ to 10TO 20 396 15 Sets U 5 7 5 kV and 3TQ lt R lt 10TQ 15 5cts 30 5cts Frequency 15 to 500Hz V 3 0 5 1ct AC voltage superimposed 0 to 20 Vn MQ 0 1 Vn 0 5 Vn 5cts on test voltage 1 The DAR PI and DD terms and the capacitance and leakage curren
24. 2500V 2501 to 4000V Resolution 0 1V 1V 2V 2V Accuracy 1 5cts 1 1ct Frequency range DC or 15 to 500Hz DC m Input impedance 3MO 7 2 2 Current oo Range 9 000 to 0 399nA 0 400 to 3 999nA 4 00 to 39 99nA 40 0t0399 9nA 400 nA to 3 999uA Resolution 1pA 1pA 10pA 100pA 1nA Accuracy 15 10cts 10 5 oo Banys 4 00 to 39 99uA 40 0 to 399 9uA 400 pA to 3 999mA 4 00 to 9 999mA Resolution 10nA 100nA 1pA 10pA Accuracy 5 52 Megohmmeter Models 6550 6555 7 2 3 Insulation Resistance m Method Voltage current measurement per IEC 61557 2 from 300 to 10 000V and per DIN VDE 0413 Part 1 09 80 m Nominal output voltage 500V 1000V 2500V 5000V 10 000V and 15 000VDC for the Model 6555 or adjustable from 40 to 10 000VDC and 15 000VDC for the Model 6555 Inherent accuracy 1 adjustable from 40 to 10 adjustable from 1000 to m Maximum current lt 1imADC from 40 to 999V 000Vpc in 10 V steps 15 000VDC in 100 V steps 5 to 0 2mADC from 1000 to 15 000V The user can adjust this current m Maximum acceptable peak AC voltage at terminals during measurement 0 4VN or 1000VAC maximum m Short circuit current lt 5mADC 5 This current can be limited in SET UP setting maximum output current to between 0 2 and 5mA It can also be limited by the maximum output power which is 10W m Maximum output current as a function of the test voltage U V 50 100 200 300 1100 1200
25. 6550 6555 TJ AEMC ENGLISH User Manual INSTRUMENTS Megohmmeter Models 6550 6555 Cat 2130 31 Cat 2130 32 PRODUCT PACKAGING Ships with the following Small Classic Tool Bag Cat 2133 72 10kV Megohmmeter Model 6550 Cat 2130 31 or 15kV Megohmmeter Model 6555 Cat 2130 32 Set of 3 color coded red blue black 9 ft 15kV integral leads and alligator clips 1000V CAT IV set of 2 color coded test probes red black 1000V CAT IV Cat 2151 14 15kV Jumper Lead Cat 2151 15 Optical USB Cable 115V US Power Cord Also Includes Cat 2135 41 Cat 5000 14 e User Manual DataView Software 2x9 6V NiMH batteries Cat 2140 19 each Statement of Compliance Chauvin Arnoux Inc d b a AEMC Instruments certifies that this instrument has been calibrated using standards and instruments traceable to international standards We guarantee that at the time of shipping your instrument has met its published specifications An NIST traceable certificate may be requested at the time of purchase or obtained by returning the instrument to our repair and calibration facility for a nominal charge The recommended calibration interval for this instrument is 12 months and begins on the date of receipt by the customer For recalibration please use our calibration services Refer to our repair and calibration section at www aemc com Serial Catalog 2130 31 2130 32 Model 6550 6555 Please fill
26. 6V 4Ah NiMH battery packs Charging is carried out by connecting the instrument to line voltage of 90 to 260V and a frequency of 50 60 Hz with an ambient temperature of 32 to 86 F 0 to 30 C 7 3 1 NiMH Technology The NiMH technology has many advantages such as m long life between charges with limited bulk and weight recharging capability m avery small memory effect you can recharge your battery even if it is not fully discharged without reducing its capacity m environmental protection through the elimination of polluting materials such as lead and cadmium The NiMH technology allows a limited number of charging discharging cycles that depends on the conditions of use and the charging conditions Under optimum conditions this number of cycles is 200 7 3 2 Battery Charger The built in charger manages the charging current the battery voltage and the internal temperature of the bat tery simultaneously This optimizes the charging while ensuring a long battery life The day before you use your device check its charge condition If the battery level indicator shows less than three bars charge the device overnight see 84 1 The charging time varies between 6h and 10h A half hour charge restores 10 of the capacity of the battery enough to make a few measurements It is possible to recharge the batteries while making insulation measurements provided that the voltages used are not too high and the measured values are high e
27. Choose the type of test Burning Early Break or Break at I Limit Maximum Output Current Set the maximum output current from 0 2 to 5mA Maximum Output Voltage Set the maximum output voltage This can be useful to prevent handling errors thus making it possible to entrust the instrument to less experienced users for particular applications e g telephone aviation etc where it is important not to exceed a maximum test voltage Example If the maximum voltage is set to 750V the measurement will be made at 500V for the 500V fixed voltage and at a maximum of 750V for all other fixed voltages The adjustment range is from 40 to 10 000V 15 000V for Model 6555 22 Test Timing I3Timed Run m s DAR s s PI m m Test Parameters 3Test Type Burn in Maximum Output Current 5 0 mA Maximum Output Voltage 15000 V Adjustable Voltage 1 50V Adjustable Voltage 2 500V Adjustable Voltage 3 2500 V Megohmmeter Models 6550 6555 3 2 5 Adjustment of the Test Voltages Always on the third SET UP screen Adjustable Voltage 1 2 and 3 Set the values of the 3 adjustable test voltages The adjustment range is from 40 to 15 000V Press the DISPLAY button to see the following Step 4 Ramp Functions 3Set Step Function 1 Set Step Function 2 Set Step Function 3 Set Ramp Function 1 Set Ramp Function 2 Set Ramp Function 3 Set Step Function 1 2 and 3 In the case of a measurement with a stepped voltage used to set
28. D term can be calculated This test measures the dielectric absorption of heterogeneous or multilayer insulation and disregards parallel sur face leakage currents The dielectric discharge test is especially well suited for measuring the insulation of revolving machines and more generally for measuring the insulation on heterogeneous or multi layer insulating materials containing organic substances It involves applying a test voltage for long enough to electrically charge the insulation to be measured At the end of the measurement the instrument induces rapid discharging during which the capacitance of the insulation is measured then one minute later it measures the residual current flowing in the insulation The DD term is then calculated as follows DD current measured after 1 minute mA test voltage V x measured capacitance F 4 7 1 DD Measurement Press the CONFIG button CONFIG Total Run Time Manual Stop o Timed Run m s Timed Run DD DAR s s PI m m Megohmmeter Models 6550 6555 CONFIG Total Run Time gt Manual Stop DD Timed Run m s Timed Run DD DAR s s PI m m CONFIG Total Run Time Manual Stop Manual Stop DD Timed Run m s a DAR s s PI m m 00 03 00 2 00 30 60 1 0 10 39 To set the duration of the measurement place the cursor on Timed Run m s Then use the 4 gt andA Y arrow buttons to set the minutes and seconds The minimum setting is 0 01 but
29. Next In the Customer Information window enter a Name and Company then click Next In the Setup Type window that appears select the Complete radio button option then click Next In the Select Features window that appears select only the instrument s control panel that you want to i The PDF XChange option must be selected to be able to generate PDF reports from within DataView 49 DataView InstallShield Wizard Select Features Select the features setup will install Select the features you want to install and deselect the features you do not want to install MDTR M Ground Integrity Monitor Megohmmeter support files M Ground Tester Installation Tester Megohmmeter M MieroDhmmeter M Power Quality Logger M PowerPad M PowerPad II Model 8335 M PowerPad Jr M Sentinel Data Logger MM PDF XChange 102 42 MB of space required on the C drive 329710 12 MB of space available on the C drive InstallShield Figure 6 2 9 In the Ready to Install the Program window click on Install 10 If the instrument selected for installation requires the use of a USB port a warning box will appear similar to below Click OK DataView InstallShield Wizard Do not connect the AEMC USB Instrument or cable until after the installation of the drivers and the DataView software has finished If the AEMC USB Instrument or cable is connected to the computer now then disconnect it from th
30. Start by applying the DF10s filter If that is not enough go to the DF20s filter then to the DF40s filter The larger the time constant the smoother and slower the measurement Successive presses on the FILTER button will modify or remove the filter m DF 10 time constant 10 seconds m DF 20 time constant 20 seconds m DF 40 time constant 40 seconds m no filter The filter is calculated as follows RN RN 1 R R N If N is set to 20 the time constant of this filter will be approximately 20 seconds FIXED VOLTAGE soov Kololo JAVA 2500 v Input voltage 10VAC Frequency 50 0 Hz Input current 24 6 nA Date 2011 05 23 Time 10 31 Selecting digital filtering DF is recommended for measurements of fluctuating high insulation resistance values Such fluctuations may be due to hand movement when touching the cables fluctuating capacitances in the device tested insulation that varies because of conducting dust an ionizing and polarizing effect of this dust etc or again to the presence of an AC voltage superposed on the measurement The FILTER button is active before and during the measurement but is not available in graph mode 18 Megohmmeter Models 6550 6555 2 4 7 HELP Button A short press on the HELP button opens the help function in which the actions of the buttons are explained This operation changes with the context setting of the switch operating mode before during or after a measurement B
31. a duration below 30 seconds is hardly useful because acquiring a stable resistance result requires some time CONFIG Total Run Time 00 02 00 Manual Stop Manual Stop DD O MES m s 200 Timed Run DD DAR s s 30 60 PI m m 1 0 10 Once the duration has been set move the cursor back to Timed Run DD m Press the CONFIG button to confirm and exit the configuration menu DD or DD is displayed in the top left corner of the display unit to indicate the configuration chosen m Press the START STOP button to start the measurement In the Manual Stop DD configuration wait until the elapsed time is greater than one minute then press the START STOP button to stop the measurement In the Timed Run DD configuration indicated by the symbol the measurement stops automatically In both cases it is necessary to wait one minute after the measurement is stopped countdown on the display unit for the instrument to display the result During this time the START STOP button is lit but the instrument does not emit an audible signal The result is then displayed BURN A 234 5 MO 507 V 224 6 pA Elapsed Time 00 02 00 DAR 30s 60s PI 1 0m 10m Capacitance DD current DD START STOP 40 Megohmmeter Models 6550 6555 4 7 2 Interpretation of Results Value of DD Quality insulation 7 lt DD Very poor 4 DD 7 poor 2 DD 4 Borderline DD lt 2 Good 4 8 Capaci
32. again to return to the first SET UP screen 24 Megohmmeter Models 6550 6555 4 OPERATION 4 1 Charging the Batteries i NOTE When using the instrument for the first time start by fully charging the batteries Charging must be conducted at a temperature between 32 and 86 F 0 and 30 C To charge the batteries 1 Set the rotary switch to the OFF position 2 Connect the power cord gt 90 Vac lt 260 Vac 50 60 Hz During the charging the instrument displays the following information The percentage charge of each of the batteries their voltages their T Sato am Cnarging charging currents their temperatures and the charging times 12 4 V 1953 mA To reduce the power to be supplied and make it possible to use the 28 49 instrument during the charging the batteries are charged alternately 00 05 30 at 2A for 10 seconds It is for this reason that the charging current Eis varies Battery 2 3 11 7V The text on the side indicates 13 mA 26 7 C 00 05 20 Charging battery being charged Full battery fully charged Cold battery too cold to be charged Hot battery too hot to be charged m Defect battery faulty must be replaced Charging time Between 6 and 10 hours depending on the initial charge condition When the instrument is switched on the battery state information is accessible by pressing the HELP button followed by TEMP button Following prolonged stor
33. age the batteries may be completely discharged In this case the first charge may take longer It is possible to charge the instrument during operation In this case the m symbol flashes The charging current then depends on the test voltage and on the resistance measured If the power necessary for the measurement approaches 10W the batteries are not charged Megohmmeter Models 6550 6555 25 4 2 Using the Leads Specific leads are supplied with the instrument To use them attach either the test probes or alligator clips supplied with the instrument A NOTE These accessories have hand guards For safety reasons the user s hands must always be behind the hand guard Always keep hands behind this protective guard Voltages lt 1000V Insulation using a test voltage lt 5000V On insulation measurements with a test voltage 2 5000V Measurements of voltages gt 1000V on supply lines should be made using the test probes only with the user s hands behind the hand guard on the lead WARNING The leads with large clips automobile battery charger type proposed as accessories should not be used for line voltage measurements because their jaws are not insulated 4 3 AC DC Voltage Measurement Turning the switch to any insulation measurement position V FIXED V VAR V RAMP or V STEP sets the instrument to AC DC voltage measurement The voltage between the input terminals is measured at all time
34. ance displayed is always greater than the true resistance because of the permanent capacitive current due to the permanent variation of the voltage The value displayed will be exact only at the end of the test during the voltage level When the instrument is configured for a manual stop once the measurement is stable press the START STOP button again to stop the measurement In the other cases programmed duration Timed Run Timed Run DD DAR PI V RAMP or V STEP the measurement stops automatically at the end of the test At the end of the measurement the instrument switches back to voltage measurement but usually the result of the insulation resistance measurement remains displayed To display the voltage press the DISPLAY button In case of an external voltage 25V the instrument automatically switches to the screen with the test description and small input voltage indication OA The alarm is enabled and the insulation resistance is below the alarm threshold ni ALARM 4 amp E BRK Type of test Y N Value of the insulation resistance 995 Mi Value of the test voltage at the 528 V 531 nA Current at the end of the measurement end of the measurement Elapsed Time 00 01 12 Duration of the measurement DAR 3058 6058 1 00 Ancillary results PI 1 0m 10m xc Capacitance 2 201 nF 34 Megohmmeter Models 6550 6555 4 4 9 After the Insulation Measurement Once the measurement has
35. asurements real time clock and a USB interface configuration real time testing and data export to a PC using the included DataView software 6 Megohmmeter Models 6550 6555 2 2 Front Panel Features 1000V CAT III V CAT IV A 2500V ses TEMP ALARM v 225 ses CONFIG DISPLAY C OC HELP MEM FILTER GRAPH 15kV MEGOHMMETER AEMC MODEL 6555 INSTRUMENTS Safety connection terminals G and Graphical digital LCD see 2 3 Power receptacle for recharging the batteries USB connection for communication with a PC Seven position rotary function switch Navigation buttons for moving the cursor selecting and changing values START STOP measurement button 060060000 0 Eight function buttons see 2 4 Megohmmeter Models 6550 6555 2 3 Display The display is a graphical digital LCD with a resolution of 320 x 240 pixels It has built in backlight which can be controlled by a long press on the HELP 0 button 2 3 1 Example of Display Before Measurement Test vvith programmed duration The blinking value can be modified using the navigation arrow keys Value of the next lowest available test voltage Value of the external voltage present on the terminals and its frequency Current flowing between the terminals ALARM FIXED VOLTAGE OY Test Run Time 00 02 00 Input voltage Frequency Input current Date 2011 05 23
36. conds the measurement is displayed in digital form and in analog form on a bargraph Set 500 V 531 nA Elapsed Time 00 00 23 kQ MO 1 GO 1 TO 10 100 10 100 10 100 10 If the measurement is unstable it is possible to apply a digital filter by pressing the FILTER button It is possible to view the available result values by pressing the DISPLAY button 995 MO 28 V Set 500 V 531 nA Elapsed Time 00 01 12 DAR 30s 60s 1 00 PI 1 0m 10m Capacitance DISPLAY In the case of a step test voltage 10 steps at most or ramp test voltage 3 steps the progress of the steps will be indicated Megohmmeter Models 6550 6555 33 Step 2 of 10 tx 5 03 GO Voltage of the 1030 V Step 2 10 209 4 nA second step Remaining Time 00 01 25 Remaining DL measurement time RO MQ GO TQ 1 1 1 10 100 10 100 10 100 10 You can view the graphical representation of the measurement results by pressing the GRAPH button GRAPH 858GO MMEA 858 GO MOEA V 510 500 490 470 GRAPH For V VAR and V FIXED it is also possible to change measurement parameters during the measurement by pressing the CONFIG button It is possible to fix the measurement range of the current to add an analog filter disturbance level low high or to change the test voltage if in the variable test voltage mode V VAR For more details refer to 8 2 4 3 In the case of a ramp measurement the resist
37. configuration modified in one of these two ways is updated for both SET UP function or CONFIG button 3 2 1 Configuring the Instrument using the SET UP Function m Turn the rotary switch to the SET UP position General Settings OSet Default Parameter Buzzer Power Down Baud rate m Select and modify a parameter using the A V 4 gt buttons Date 2011 05 25 Time 9 41 Temperature Unit Celsius Instrument Number 100213 Firmware 1 0 00 20 Megohmmeter Models 6550 6555 3 2 2 Configurable Parameters Buzzer Sets the audible level of beeps 1 2 3 or Off no souna Auto Power OFF power management On instrument will turn off after 5 minutes of no activity Off instrument will not turn off automatically Baud Rate Sets the data rate of the serial interface to 9600 19200 38400 or 57600 bauds Date Sets the date in yyyy mm dd format Time Sets the time in hh mm format Temperature Unit Chooses the temperature unit Celsius or Fahrenheit Instrument Number Indicates the number of the instrument This line is informative and cannot be modified Firmware Indicates the two version numbers of the firmware in the instrument This line is informative and cannot be modified 3 2 3 Resetting the Default Parameters To return to the initial configuration choose Set Default Parameter The instrument requests confirmation SET UP WARNING All parameters will be reset M40 K CANCEL If you choos
38. d duration m Timed Run DD measurement is automatically stopped at the end of the programmed duration and dielectric discharge ratio DD is calculated m DAR measurement is automatically stopped at the end of one minute or of the programmed time if different m Pl measurement is automatically stopped at the end of 10 minutes or of the programmed time if different It is always possible to stop a measurement during a test with programmed duration by pressing the START STOP button The A V arrow buttons are used to select the measurement A configuration C gt C3 C CONFIG When Timed Run test with programmed duration or Timed Run DD is selected the duration of the measure ment m s can be set CONFIG Total Run Time 00 02 00 Manual Stop Manual Stop DD O MEW m s 21 00 Ti R DD AUT i 30 60 To do this use the 4 gt A Y arrow buttons PI m m 1 0 10 Megohmmeter Models 6550 6555 11 The test will run for the time programmed However if during the measurement the rotary switch position is changed or the START STOP button is pressed the measurement will stop Press the DISPLAY button to CONFIG The A Y arrow buttons are used to see the second configuration screen o lest Type Burn in Maximum Ouput Current 1 mA I Range Auto 2 select and modify a parameter A Disturbance Level Low 14 gt 2500V lt 2 5 MO v C C DISPLAY The second configuration screen depen
39. de with high test voltages stop the measurement by pressing the START STOP button when the measurement is complete 7 3 5 Defect message When a battery is deeply discharged or its storage temperature is low the charger may execute a reactivation stage prior to fast charge That means that the charger applies a slow charge until the battery reaches either a minimum temperature threshold or a minimum charge voltage threshold If the battery is in good condition this reactivation stage ends after about 45 minutes then charger switches over to fast charging However if the maximum time allowed for the reactivation stage is exceeded or the internal resistance of a bat tery at the end of its life is high the instrument declares the battery defective in the form of a Defect message on the instrument screen The instrument must then be sent in for repair see S 8 5 Megohmmeter Models 6550 6555 59 7 4 Environmental Specifications m Range of use The relative humidity can significantly affect insulation Take care not to make an insulation resistance measure ment if the temperature is below the dew point 32 to 113 F 0 to 45 C 0 to 90 RH Specified domain of use 32 to 95 F 0 to 35 C 0 to 75 RH Storage without the batteries 40 to 158 F 40 to 70 C 10 to 90 RH m Altitude lt 2000m m Degree of pollution 2 7 5 Mechanical Specifications m Dimensions LXWxH 13 4 x 11 8 x 7 9 340 x 300 x
40. dels 6550 6555 2 4 Button Functions If the audible signal has not been deactivated in SET UP see 8 3 2 the instrument confirms each button press by an audible beep If the beep has higher frequency this indicates that pressing the button is prohibited and will have no effect A long press press maintained for more than two seconds is confirmed by a second audible beep BUTTON DESCRIPTION TEMP Enter temperature and humidity information and calculate temperature corrected resistance ALARM Enables Disables the alarms HELP 2 e Displays Help information Enables Disables the backlighting of the display MEM e Stores the measurements CONFIG e Configuration of the measurement parameters DISPLAY Switch between screens FILTER e Smoothing of the measurements GRAPH e Switch graph mode ON OFF 2 4 1 TEMP BUTTON This function is accessible only when the measurement is completed for V VAR and V FIXED only It is used to reference the measurement result to a temperature other than the one at which the measurement was made Temperature causes the resistance to vary according to a quasi exponential law To a rough approximation raising the temperature by 18 F 10 C halves the insulation resistance conversely lowering the temperature by 18 F 10 C doubles the insulation resistance Comparing measurements to a single reference temperature makes it easier to evaluate insulation resistance measurements taken at
41. ds on the rotary switch setting The V RAMP and V STEP settings only use the second page of the configuration screen The second configuration screen is used to choose m Thetype of test Test Type m Nondestructive test Early Break The measurement will be stopped at the first breakdown current peak detected This type of test is used for non destructive tests The current is limited to 0 2mA The E BRK symbol is displayed FIXED VOLTAGE soov Bie e eM 2500 v Input voltage 10V AC Frequency 50 0 Hz Input current 24 6 pA Date 2011 05 23 Time 10 31 m Stopping the test at a preset current Break at l limit The measurement will be stopped when the current reaches the maximum value Maximum Output Current defined by the user see below This type of test is useful for testing varistors or other types of voltage limiter The I LIM symbol is displayed FIXED VOLTAGE soov B eje eM 2500 v Input voltage 10 V AC Frequency 50 0 Hz Input current 24 6 pA Date 2011 05 23 Time 10 31 12 Megohmmeter Models 6550 6555 m Burning The measurement is not stopped depending on the current Depending on the application this type of test can be used to determine the location of insulation faults when there is Burning appearance of an electric arc during the test or burn spot after the test The BURN symbol is displayed FIXED VOLTAGE soov Bie eje JAVA 2500 v Input voltage 10VAC Frequency 5
42. e OK the following default parameters will be reset Audible level of the buzzer 1 Auto Power OFF will be set to OFF Data rate 38 400 baud Programmed measurement duration 2 minutes Sampling duration 10 seconds DAR 30 60 and Pl 1 10 Test type Burning Maximum output current 5mA Maximum output voltage 10kV 6550 15kV 6555 Adjustable test voltages 50V 800V and 7000V Ramp and step test voltages return to their original values as do all alarm thresholds The backlight will be turned off Megohmmeter Models 6550 6555 21 3 2 4 Measurement Parameters Press the DISPLAY button to see the following Timed Run Set the measurement duration in minutes seconds for measurements with programmed duration The adjustment range is from 00 01 to 99 59 in 1 second steps DAR Set the time at which the measurements must be recorded to calculate the DAR see 8 4 6 This can be used in special applications The first time can be set from 10 to 90 seconds in 5 second steps The second time can be set from 15 to 180 seconds in 5 second steps Pl Set the time at which the measurements must be recorded to calculate the Pl see 8 4 6 This can be used in special applications The first time can be set from 0 5 to 30 minutes in 0 5 then 1 minute steps The second time can be set from 0 5 to 90 minutes in 0 5 1 and 5 minute steps Press the DISPLAY button to see the following Test Type
43. e computer before proceeding end Figure 6 3 The installation of the drivers may take a few moments Windows may even indicate that it is not respond ing however it is running Please wait for it to finish 11 When the drivers are finished installing the Installation Successful dialog box will appear Click on OK 12 Next the Installation Wizard Complete window will appear Click on Finish 13 A Question dialog box appears next Click Yes to read the procedure for connecting the instrument to the USB port on the computer The Set up window remains open You may now select another option to download e g Adobe Reader or close the window 50 Megohmmeter Models 6550 6555 14 Restart your computer Shortcuts for DataView and each instrument control panel selected during the installation process have been added to your desktop You can now open the Megohmmeter Control Panel and connect your instrument to the computer 6 2 Connecting the Instrument to the PC INSTALL THE SOFTWARE AND DRIVERS BEFORE CONNECTING THE INSTRUMENT TO A PC m Set the switch to any position other than OFF m The data rate must be 38 400 bauds for the instrument see 85 2 and for the PC m Connect the instrument to the PC using the optical USB cable supplied with the instrument after removing the cover that protects the port in the instrument When in communication with a PC the instrument displays REMOTE and no longer reacts to the user s com
44. efore means that the insulation is defective the resistance of defective insulation decreases as the test voltage increases This phenomenon is barely observable with low test voltages At least 2500V must therefore be applied Since the application of the voltage is gradual it causes no premature ageing or deterioration of the device tested Unlike the increase in steps the gradual increase of the current means that the capacitive current is constant A variation of the current therefore directly represents a variation of the insulation resistance Evaluating the result m A negative slope of the resistance versus test voltage curve exceeding 500ppm V generally indicates the presence of mildew or other deterioration m A larger negative slope or a sudden drop indicates the presence of localized physical damage arcing perforation of the insulation etc The test with a voltage ramp is ideally suited for testing semiconductors diodes transistors and thyristors Take care in this case to choose a non destructive type of test Break at l limit see 8 2 4 3 and a maximum output current less than or equal to 1mA Set the switch to the V RAMP position The following screen appears Q B BURN RAMP FUNCTION Min 50V di Max 100V Test Run Time 00 00 30 Input voltage 0 1 V DC Frequency 0 2 Hz Input current 55 7 nA Date 2011 05 24 Time 15 31 Megohmmeter Models 6550 6555 29 Use the A Y buttons to select a pr
45. elded safety lead black 25 ft with hippo clips 15kV sssesessssse Cat 2151 18 Lead One shielded safety lead blue 25 ft with hippo clips 15kV seseseesessssss Cat 2151 19 Lead One shielded safety lead red 25 ft with hippo clips 15kV ssseseesessssss Cat 2151 20 Lead One shielded safety lead black 45 ft with hippo clips 15kV esssssssss Cat 2151 21 Lead One shielded safety lead blue 45 ft with hippo clips 15kV ssseesesssssss Cat 2151 22 Lead One shielded safety lead red 45 ft with hippo clips 15kV sssesesesssssss Cat 2151 23 Power cordes 240V EU icto e se E ERR EE CRETA Cat 5000 32 DataView Software Updates are Available at www aemc com Megohmmeter Models 6550 6555 5 2 PRODUCT FEATURES 2 1 Description The Megohmmeter Models 6550 and 6555 are high end portable measuring instruments capable of measuring very high electrical insulation and resistance values They are packaged in a rugged IP 54 rated case have a graphical LCD screen and can operate on battery or AC power The Model 6550 makes insulation measurements at voltages up to 10 000V the Model 6555 up to 15 000V Their main functions are m detection and measurement of input voltage frequency and current m quantitative and qualitative insulation measurement measurement at
46. elow is an example in V FIXED mode Help DISPLAY next page GRAPH graph R t V t I t I V CONFIG configuration menu FILTER 3 digital filters DF off ALARM alarm on off MEM store data record menu TEMP temperature menu lt V AP select test voltage HELP Y lower AP higher A long press on the HELP button gt 2s allows setting of the display contrast and the backlighting see S 3 1 Megohmmeter Models 6550 6555 19 3 INSTRUMENT CONFIGURATION 3 1 Adjusting the Brightness and Contrast m Press the HELP button for CONTRAST amp BACKLIGHT more than two seconds m Press the gt buttons to k 1 1 jJ adjust the contrast Display Contrast lt gt m Press the A Y buttons to 228 adjust the brightness EN 33 31 m Press the HELP button to exit Backlight These adjustments are stored even HELP after the instrument is switched off 3 2 Configuring the Instrument SET UP The Models 6550 6555 are factory configured so that they can be used without modifying the parameters For most measurements simply choose the test voltage and press the START STOP button Most parameters can be configured using the CONFIG button or in the SET UP function m The SET UP function allows overall configuration of the instrument independently of which measurement functions are chosen m The CONFIG button allows configuration of the chosen measurement function before and during a measurement A
47. ement It stops automatically and the values of DAR and PI are displayed 4 6 2 Interpretation of the Results DAR Pl Condition of insulation PI 1 DAR 1 25 Poor or even dangerous 1 lt PI lt 2 1 25 lt DAR lt 1 6 2 lt PI lt 4 Good 1 6 lt DAR 4 lt PI Excellent A capacitance in parallel to the insulation resistance extends the settling times of the measurements This can affect or even inhibit the measurement of DAR or Pl depending on the time set for recording the first resistance value The table below indicates the typical values of the capacitances in parallel with the insulation resistance making it possible to measure the DAR and the Pl without changing their preset durations 100kQ 1MO 10MO 100MO 160 10GQ 100GQ 500V 10uF 10uF 10pF GuF AF 2uF 1uF 1000V 5uF 5uF 5uF 3uF 2uF 1uF 0 5uF 2500V 2uF 2uF 2uF 1 24F 1uF 0 5uF 0 2uF 5000V 1uF 1uF 1uF 0 6uF 0 4uF 0 3uF 0 1uF 10 000V 0 5uF O 5uF 0 5uF 0 3uF 0 2uF 0 1uF OF 15 000V 0 3uF 0 3uF 0 3uF 0 2uF 0 1uF 0 1uF OF 38 Megohmmeter Models 6550 6555 4 7 DD dielectric discharge index In the case of multilayer insulation if one of the layers is defective but the resistance of all the others is high neither the quantitative insulation measurement nor the calculation of the Pl and DAR quality ratios will reveal the problem This makes it judicious to perform a dielectric discharge test from which the D
48. er Model 1060 5060 5070 6550 and 6555 Micro Dhmmeter Model 6240 and 6250 Power Energy Logger Model PEL102 and PEL103 Power Meter Model 8220 Power Quality Logger Model PQL100 and PQL120 PowerPad Model 3945 and 3945 B PowerPad ll Model 8335 PowerPad Jr Model 8230 Power Clamp Model 407 and 607 Sentinel Data Logger Simple Logger II DTR Model 8510 Figure 6 1 There are several different options to choose from Some options require an internet connection m DataView Version x xx xxxx Installs DataView onto the PC m Adobe Reader Links to the Adobe website to download the most recent version of Adobe Reader to the computer Adobe Reader is required for viewing PDF documents supplied with DataView m DataView Updates Links to the online DataView software updates to check for new software version releases m Firmware Upgrades Links to the online firmware updates to check for new firmware version releases m Documents Shows a list of instrument related documents that you can view Adobe Reader is required for viewing PDF documents supplied with DataView 3 DataView Version x xx xxxx option should be selected by default Select the desired language and then click on Install e N Pp Ut dB install then click Next Megohmmeter Models 6550 6555 The Installation Wizard window will appear Click Next To proceed accept the terms of the license agreement and click
49. er Service Authorization Number CSA by phone or by fax from our Service Depart ment see address below then return the instrument along with the signed CSA Form Please write the CSAH on the outside of the shipping container Return the instrument postage or shipment pre paid to Ship To Chauvin Arnoux Inc d b a AEMC Instruments 15 Faraday Drive Dover NH 03820 USA Phone 800 945 2362 Ext 360 603 749 6434 Ext 360 Fax 603 742 2346 or 603 749 6309 E mail repair aemc com Caution To protect yourself against in transit loss we recommend you insure your returned material NOTE You must obtain a CSA before returning any instrument 64 Megohmmeter Models 6550 6555 NOTES Megohmmeter Models 6550 6555 65 AEMC 01 13 99 MAN 100374 v6 Chauvin Arnoux Inc d b a AEMC Instruments 15 Faraday Drive e Dover NH 03820 USA e Phone 603 749 6434 e Fax 603 742 2346 www aemc com
50. es m Typical discharge time of a capacitive element to reach 25 VDC Test Voltage 50V 100V 250V Discharge Time C at uF 0 25sxC 0 5sxC 1sxC Test Voltage 5000V 10 000V 15 000V Discharge Time C at pF 14sxC 27sxC 57sxC 500V 1000V 2500V m Typical curves of the test voltages at the instrument terminals as a function of the load resistance 500 400 300 200 100 54 500V Range Megohmmeter Models 6550 6555 1000V Range 1T 10T 100 G 1200 1000 100 k 1M 10M 100 M 1G 10G 10k 2500V Range 500 100 k 1M 10M 100 M 1G 10G 100G 1T 10T 10k 55 Megohmmeter Models 6550 6555 10000 56 6000 5000 4000 3000 2000 1000 8000 6000 4000 2000 5000V Range
51. eset test voltage ramp m Ramp function 1 50 to 500V m Ramp function 2 500 to 5000V m Ramp function 3 1000 to 10 000V The voltages at the beginning and end of the ramp can be programmed with the CONFIG button see 2 4 3 The duration of the test is the sum of the three durations specified the duration of the initial level the duration of the ramp and the duration of the final level 4 4 5 Using a Stepped Voltage The preset stepped voltage tests have ten levels The duration of each of the voltage levels is identical At the end of each level the capacitive current should be zero and only the measurement current remains Unlike the ramp test the step test stresses the insulation and can cause a breakdown A sudden increase of the current or a sudden decrease of the insulation resistance means that a breakdown point is near It is then possible to discontinue the measurement manually by pressing the START STOP button or automatically using E BRK or Break at I Limit type of test see S 2 4 3 A drop of 2596 or more between the insulation resistance of the first level and that of the second level is a sign of deterioration of the insulation Set the rotary switch to the V STEP position The following screen appears O s STEP FUNCTION Min 50V r Max 500V Test Run Time 00 01 40 Input voltage 1VAC Frequency 50 0 Hz Input current 24 6 nA Date 2011 05 24 Time 15 31 V VAR V FIXED
52. he CONFIG button m The time indication in the upper right of the screen stops blinking this is the indication for zoom mode m The lt gt arrow buttons are used to modify the time scale of the graph m The A Y arrow buttons are used to modify the resistance scale of the graph Press the DISPLAY button to view the current vs time curve GRAPH 2 985 GO 167 8 nA 00 05 00 Minimum and maximum values of the current at the position of the cursor Axis of the current C Curve R t DISPLAY Time axis Press the DISPLAY button again to view the current vs voltage data points not available for V STEP DISPLAY This curve is useful primarily in the case of a measurement in V RAMP mode There is no cursor and it is not possible to zoom on this curve Megohmmeter Models 6550 6555 17 2 4 6 FILTER Button PE ALARM E x 303 3 MO 984 V 3 244 pA Elapsed Time 00 00 48 kQ MQ Q TQ 1 1 1 10 100 10 100 10 100 10 The FILTER button can be used to activate and deactivate a digital filter for the insulation measurements This filter affects only the displayed results which are smoothed not the measured values The recorded data therefore remains raw no filter This function is useful in the case of high instability of the insulation values displayed but it is also possible to estimate the measurement on the bargraph Once the measurement starts if interference is present press the FILTER button
53. in the CONFIG menu or the SET UP function see S 3 2 to adapt to particular applications 36 Megohmmeter Models 6550 6555 4 6 1 DAR PI Measurement There are several ways of measuring the DAR and the Pl m Manual Configuration Press the START STOP button VVait one minute for the DAR or ten minutes for the PI if the default values are used Ac 499 MO kQ MO 1 GO TO 10 100 10 100 10 100 10 502 V Set 500V 978 nA Elapsed Time 00 10 08 START STOP Press the START STOP button again to stop the measurement 502 MO 502 V 978 nA Elapsed Time 00 10 10 DAR 30s 60s 2 64 PI 1 0m 10m 1 05 Capacitance 320 nF START STOP m Automatic Configuration preferred Press the CONFIG button CONFIG Total Run Time CS DEVIS Manual Stop DD Timed Run m s Timed Run DD DAR s s PI m m CONFIG Megohmmeter Models 6550 6555 37 Use the A Y arrow buttons to select DAR or PI CONFIG Total Run Time Manual Stop Manual Stop DD Timed Run m s 00 01 00 2 00 Timed Run DD a DA s s PI m m 30 60 1 0 10 Press the CONFIG button to exit the configuration menu CONFIG Total Run Time Manual Stop Manual Stop DD Timed Run m s Timed Run DD DAR s s L3 Bimm 00 10 00 2 00 30 60 1 0 10 DAR or Pl is displayed in the top left corner of the display unit to indicate the configuration chosen Press the START STOP button to start the measur
54. k aaa e in posa Da 29 4 4 5 Deng a Stepped Vollage ccce ue cire tete etr repe ce etf Ce Petro es Deco tit 30 LN Neuere dat oenm t iaa 31 4 4 7 Before the Insulation Measurement ccceeeeeee cece cece eeee tee e cette eed nen nn 32 4 4 8 During the Insulation Measurement 2 2 eeeceeccceee eee ee eeeee cece eeee anne 33 4 4 9 After the Insulation Measurement aaaaaaaaaaaananaaaanananiaaanananananananananananananam nan nin aeanena 35 4 5 EMORIAdICA ION te ag ies oi ii antes diet ies ena eee iene 36 4 6 DAR dielectric absorption ratio and PI polarization index cccoonnonoccccnnnnncccnonancnnncnncnnnnnanannncncnnnos 36 4 671 DARRPLM asurementesis A A Eu ac RES 37 4 6 2 Interpretation of the Results 0 2 0 cece cece cee eee cece teeta eee eee aaa e aaa aa ae nnmnnn aeaaaeeeaeeseeeeseseeeeeeeeeeeeeeees 38 4 7 DD dielectric discharge dex epe nip A A E A OA 39 ASFA DD Measurement seis itin dicta a ducta qu deia eee teed 39 4 7 2 Interpretation of Results e ee eae e eea a e aar reene nie aee ae aa aera Paa noanean raa 41 4 8 Capacitance Measurement cc cceeeeeseeeneeeeeaeeeeaensaeeeaenaaaneaansaeaaanaaaeaaaeaaaeaaaeeaaeaaaaeaeeeaeneaeasaeeeaeeas 41 4 9 Measurement of the Residual Current ccceecseenececeeeneeeeeaenaaeeaaeeaaeeaaeeaaeaaaeeaaeeaaeeaeeeaeeeaeeeaeenaeeaas 41 MEMORY FUNCTION 1 e eere nn enun nunnunuunuuuunuunuuuunuuuuununsunsunussonsonsusensense
55. l concerning the calculation performed The insulation resistance varies with the measurement temperature This dependence can be approximated by an exponential function Re Kt Rt where Rc insulation resistance referred to 40 C Rt insulation resistance measured at temperature T Kt coefficient defined as follows Kt 1 2 A 40 T AT where AT temperature difference at which the insulation resistance is halved 2 4 2 ALARM Button SET UP see 3 2 The ALARM symbol is then displayed If the measurement is less than the alarm threshold the instrument indicates this by blinking the ALARM symbol on the display and emitting an audible signal Press the ALARM button again to disable the alarm the ALARM symbol disappears from the f Press the ALARM button to enable the alarm defined using the CONFIG button see 2 4 3 or in display ALARM 10 Megohmmeter Models 6550 6555 2 4 3 CONFIG Button 2 4 3 1 Before the Measurement If the V FIXED or V VAR test voltages have been chosen there are two configuration screens There is only one for the V RAMP and V STEP test voltages Press the CONFIG button press CONFIG again to exit CONFIG Total Run Time gt Manual Stop DD Timed Run m s Timed Run DD DAR s s PI m m Manual Stop measurements are stopped manually m Manual Stop DD measurements are stopped manually and dielectric discharge ratio DD is calculated at the end of the programme
56. lation Insulation Braid Using the guard eliminates the influence of the surface leakage current 4 4 7 Before the Insulation Measurement It is possible to configure the measurement using the CONFIG button If the V FIXED or V VAR test voltages have been selected it is possible to select a measurement configuration by pressing the CONFIG button Manual Stop Manual Stop DD Timed Run Timed Run DD DAR Pl U CONFIG Then set the type of test the maximum current the current range the filtering of the measurement and the value of the alarm threshold by pressing the DISPLAY button m Test Type Maximum Output Current l range Disturbance Level Alarm U gt DISPLAY To enable the alarm press the ALARM button The ALARM symbol will appear in the status line The ALARM symbol in the status line will blink and if the buzzer is switched on an audible beep will sound if the result of the measurement is below the programmed threshold U gt ALARM 32 Megohmmeter Models 6550 6555 4 4 8 During the Insulation Measurement Press the START STOP button to start the measurement The instrument generates high voltage To indicate that the measurement is in progress the instrument emits an audible beep every ten seconds if the buzzer is switched on and the START STOP button lights up red i START STOP START STOP ei If the test voltage generated is gt 5000V the START STOP button blinks After a few se
57. m values of the GRAPH voltage and the resistance and time 3 018 GQ 00 01 00 3 018 GQ 00 01 00 at the location of the cursor Insulation resistance axis Test voltage axis Curve V t identified by x s Curve R t Time axis This curve is plotted using samples recorded during the measurement 2 4 5 1 During a Measurement There is no cursor Each new measurement result is automatically added to the curve and its values are shown in one line above the graphical area 2 4 5 2 After a Measurement The time indication in the upper right of the screen is blinking this is the indication for cursor mode The 4 gt arrow buttons can be used to move the time cursor along the curve The minimum and maximum values at the cursor position are shown in two lines above the graph area If the time span on the time axis is 4 minutes which is the smallest possible these lines are the same and represent one sample Depending on the range of the left vertical scale it may be possible to move the vertical scale and the corresponding curve with the A Y arrow buttons 16 Megohmmeter Models 6550 6555 The following is an example of the display when a measurement is performed in V RAMP or V STEP mode GRAPH GRAPH 3 045 GQ 00 00 25 2 996 GQ 00 00 17 3 045 GO 00 00 25 2 996 GO 00 00 17 V V 1000 1000 750 750 500 500 250 250 0 0 If the interval of the scale of an axis is big enough it may be possible to zoom Press t
58. n available USB port wait for driver to be installed 2 If Autorun is enabled then an AutoPlay window should appear as shown de Install Je PDFXChange Le Reset IDs de Use de USB FT232 DATAVIEVV 1 de Usb2 q d User Manuals 4 AUTORUN INF 8 DocsEN ini DocsFR ini 9 DocsSP ini General options k Open folder to view files r 4 m Setup exe ori ioa Di sein RO ME s 9 Upgrades ini View more AutoPlay options in Control Panel UpgradesES ini UpgradesFR ini Figure 1 i NOTE If Autorun is disabled it will be necessary to open Windows Explorer then locate and open the USB removable disk drive labeled DataView to view the files on the drive 3 In the AutoPlay window select Open folder to view files 4 Double click on Setup exe from the opened folder view to launch the DataView setup program i If installing onto a Vista based computer the User Account Control dialog box will be displayed Select the Allow option to proceed 48 Megohmmeter Models 6550 6555 2 A Set up window similar to the one below will appear 5 Setup Francais Espa ol Dptions ers Adobe Reader Dataview Update Firmware Upgrades User Manuals Select an option from the list below Description Installs the English version of DataView onto this computer This version of DataView supports the following instruments Ground Tester Model 6470 B 6471 and 6472 Megohmmet
59. nnconnnnnnnnnnnnnnconnnonoconncnnncnss 60 7 0 2 Mechanical Protections eee te nete a cold ue aee ME CRR EXER Ee Rd dh ee Rege denied 60 Variations in the Domain of USS reticere e a e a aaa a 61 Inherent and Operating Accuracy cccccccceccceeceeeceeeceeeeeeeeeeeceeeeeeeeceeeeeeeeeeeeeeeeeseeeseeeeeeeeeeeeeeeeeeteteneeess 61 8 1 8 2 8 3 8 4 8 5 8 6 8 7 8 8 Recharging the Battery variation TKE EN cid a aaa aaa 62 Replacing the Battery area a sia oo il ERR ia 62 Replacing the RUSO isc id a RE ii 63 ISI Dinars TE AAA A A A 63 Repair and Cal TET TIT Tom 63 Technical and SalSSASSISTA ACE o cito S EIS 64 Limited WT A A A A e ane ms 64 Warranty Repara a ii sots Aoc it efe coe uad at 64 Megohmmeter Models 6550 6555 1 INTRODUCTION 1 1 Receiving Your Shipment Upon receiving your shipment make sure that the contents are consistent with the packing list Notify your dis tributor of any missing items If the equipment appears to be damaged file a claim immediately with the carrier and notify your distributor at once giving a detailed description of any damage Save the damaged packing container to substantiate your claim Megohmmeter Model 6550 Graphical Analog Bargraph Backlight Alarm Timer 500V 1000V 2500V 5000V 10kV Ramp StepV Variable Auto DAR PI DD USB w DataView Software Cat 2130 31 Megohmmeter Model 6555 Graphical Analog Bargraph Backlight Alarm Timer 500V 1000V 2500V 5000V 15kV Ramp
60. nough In this case the recharging time will exceed 6 hours it will depend on the frequency of the measurements made Otherwise the battery will be discharged faster than it is charged In order to extend the life of your battery m charge your device only between 10 and 30 C m Observe the conditions of use and storage stated in this manual A new battery becomes fully effective only after several complete charging discharging cycles This will not however prevent you from using your device when it has been charged for the first time However we recom mend making the first charge a full charge at least 10 hours If the instrument indicates that charging is over do not hesitate to disconnect the charger for a few seconds then reconnect it to top up the charge The battery in your instrument like any rechargeable battery is subject to significant residual discharging even when the instrument is off If your device has not been used for several weeks it is probable that the battery will be partially discharged even if it had been fully recharged just before going into storage In this case before using it again you should fully recharge the battery at least 10 hours The longer your battery is stored the more it is discharged After three months storage of the battery without periodic recharging the battery is probably fully discharged 58 Megohmmeter Models 6550 6555 Possible consequences are m Failure of the instrument
61. replaced only by competent accredited personnel 8 4 Cleaning Disconnect the instrument from any source of electricity Use a soft cloth lightly dampened with soapy water Wipe with a damp cloth and then dry with a dry cloth Do not splash water directly on the clamp Do not use alcohol solvents or hydrocarbons 8 5 Repair and Calibration To ensure that your instrument meets factory specifications we recommend that it be scheduled back to our factory Service Center at one year intervals for recalibration or as required by other standards or internal pro cedures For instrument repair and calibration You must contact our Service Center for a Customer Service Authorization Number CSA This will ensure that when your instrument arrives it will be tracked and processed promptly Please write the CSA on the outside of the shipping container If the instrument is returned for calibration we need to know if you want a standard calibration or a calibration traceable to N I S T Includes calibration certificate plus recorded calibra tion data Ship To Chauvin Arnoux Inc d b a AEMC Instruments 15 Faraday Drive Dover NH 03820 USA Phone 800 945 2362 Ext 360 603 749 6434 Ext 360 Fax 603 742 2346 or 603 749 6309 E mail repairQaemc com Or contact your authorized distributor Costs for repair standard calibration and calibration traceable to N I S T are available NOTE You must obtain a CSA before retu
62. rning any instrument Megohmmeter Models 6550 6555 63 8 6 Technical and Sales Assistance If you are experiencing any technical problems or require any assistance with the proper operation or applica tion of your instrument please call fax or e mail our technical support team Chauvin Arnoux Inc d b a AEMC Instruments Phone 800 343 1391 508 698 2115 Fax 508 698 2118 E mail techsupportGaemc com 8 7 Limited Warranty The Models 6550 6555 are warranted to the owner for a period of one year from the date of original purchase against defects in manufacture This limited warranty is given by AEMC Instruments not by the distributor from whom it was purchased This warranty is void if the unit has been tampered with abused or if the defect is related to service not performed by AEMC Instruments Full warranty coverage and product registration is available on our website at www aemc com warranty html Please print the online Warranty Coverage Information for your records What AEMC Instruments will do If a malfunction occurs within the one year period you may return the instrument to us for repair provided we have your warranty registration information on file or a proof of purchase AEMC Instruments will at its option repair or replace the faulty material REGISTER YOUR PRODUCT ONLINE AT www aemc com 8 8 Warranty Repairs What you must do to return an Instrument for Warranty Repair First request a Custom
63. s and indicated as RMS value on the display unit Input Voltage Switching between AC and DC mode is auto matic In the case of an AC signal the instrument measures the frequency It also measures the residual DC current between the terminals of the instrument This measurement is used to evaluate its impact on the insulation measurement about to be made The insulation measurements cannot be started if there is an excessively high external voltage gt 0 4VN where VN is the test voltage with a maximum of 1000VAC on the terminals 26 Megohmmeter Models 6550 6555 FIXED VOLTAGE 500 V 1v Input voltage A 230 V AC Frequency 50 0 Hz Input current 24 6 nA Date 2011 05 23 Time 10 31 When the external voltage exceeds 25V the blinking AN symbol is displayed alongside it ii NOTE By pressing the DISPLAY button the screen can be switched to a big numerical indication of the input voltage and its bargraph The only errors possible in a voltage measurement are m The frequency is outside the measurement range see 7 2 1 m The voltage is outside the measurement range see 7 2 1 4 4 Insulation Measurements 6 Insulation measurements are made on objects that are de energized therefore essential to measure them with a separate device and to record them with the PE This measurement varies greatly with the temperature and the relative humidity It is insulation value 95 The ambient
64. s the storage P or The measurement is recorded with all its supporting information To exit without recording and return to the last measurement press the lt button For each new record the instrument proposes the first free memory location following the last stored measure ment It is also possible to record a measurement at a memory location that has already been used Store MEMORY The bargraph indicates the quantity of memory used in DOUCEUR INCUN EX NEN black the quantity of memory Obj Test Date Time Fet available in white O1 2011 05 28 09 04 0202 2011 05 27 10 43 0201 2011 05 27 10 38 Measurement function and 0102 2011 05 26 15 04 1000VE availabity of samples are 0101 2011 05 26 14 56 500V N The number of measurements that can be recorded depends on the number of samples stored for each mea surement The instrument store 256 measurements and 80 000 samples associated with these measurements Megohmmeter Models 6550 6555 43 5 2 Reading Recorded Values Turn the rotary switch to the MR position The instrument indicates the memory used and the object number of the last stored record along with the lowest and highest test numbers it contains yd 01 08 Choose the object number using the A Y arrow buttons then press the button p The instrument then displays the list of records around the object chosen To see details of a measurement place the cursor on the object and the test cho
65. sen using the A Y arrow but tons then press the button Date Obj Test Date Time Fet 2011 05 28 02 02 2011 05 27 10 43 aA 2011 05 27 Resistance 5 05 GQ 2011 05 27 Voltage 965 V 2011 05 26 Current 190 6 nA 2011 05 26 Elapsed time 00 01 40 Sample time m s 0 02 Press the DISPLAY button to see the rest of the recorded information depending on the currently used func tion When the symbol indicates that the samples have been recorded you can press the GRAPH button to view the graph 44 Megohmmeter Models 6550 6555 Obj Test Date Time Fet MEMORY 02 02 2011 05 27 10 3 Lr nc TO 00 00 02 Step Function TO 00 00 02 Step Voltage Duration m s V 6 600 V 0 10 1000 7 700 V 0 10 8 800 V 0 10 9 900 V 0 10 De 10 1000 V 0 10 0 750 3 00 4 00 Press the GRAPH button to exit from the graph In the case of a V FIXED or V VAR measurement you can press the TEMP button to view the temperature infor mation The instrument can display only the information recorded with the measurement Press the TEMP button then the lt arrow button to exit and return to the list of recorded measurements Obj Test Date Time Fet 05 02 2011 05 27 10 43 2500V Air Temperature 23 C Humidity 40 Probe Temperature 23 C Rc Reference Temperature 40 C AT for R 2 10 C R measured 5 00 GQ Re at 40 C 1 529 GO Megohmmeter Models 6550 6555 45 5 3 Erasing the Memory Turn the rotary swi
66. sesses 42 3 1 2Becording a Measures d dd dae Ra te uaa chase iO LA LAA A dee E e ft 42 5 2 Reading Recorded ValieS uadecko dcus ex edat lito 44 JS Erasing the Memo tira S cS 46 Se P N in g OS ROO E EC RR 46 5 3 2 Erasing All ASCO Sa a A AAA 47 O 47 DATAVIEW SOFTWARE 5 3 ieu cua ius nsu danita necedad cc O 6 1 Installing Data Vie W e Leti lt id ii 48 6 2 Connecting the Instrument to the PC uo co dete deco tence A e de RU eR cee dee cetacis AA 51 6 3 Megohmmeter Control Panel iis aceite oda excipere da Cem n ea 51 6 3 1 Opening the Control Panel insista tati 51 SPECIFICATIONS 1 onere nenne anna nnn norris OD Til Reference Conditions ci ias 52 75 2 BleciticalOpecificatiols x AA A AAA AAA 52 Led MOMO o A E A edr armes 52 VOLANTE 52 1 23 Insulation RESISTANCE axi dee ier iret ER OTi ee erue eO Sd ea dees Regn AN 53 1 24 IDARSPI and DD s ii delete iter Penne tans az A IR RUNE 57 Lia Capacitan 57 13 POW eem ER 58 Fa T MI equejo dert 58 Megohmmeter Models 6550 6555 3 7 4 7 5 7 6 7 7 7 8 FACE dero o e 58 7 3 3 Optimize Battery Charging ii iter dad t dada meme dos edes ad EP rL d Mops 59 liat A A P 59 Lon y Defect MESS nt A A AS AAA 59 Environmental SOSCINGATIONS is a iaa 60 Mechanical Specifications ei mia it a At aaa A TA ana cai 60 Safety SPSCHICATONS ss tanta imat 60 7 6 1 Electromagnetic Compatibility oooooooconcnnccnncconcconoconononononcnncnnncnnncnnncn
67. t measurements are included in the quantity MQ 7 8 Inherent and Operating Accuracy The Megohmmeter Models 6550 and 6555 comply with standard IEC 61557 which requires that the operating accuracy called B be less than 30 In insulation measurements B IAI 1 15 V E12 E22 E32 with A inherent accuracy E1 influence of the reference position 90 E2 influence of the supply voltage within the limits indicated by the manufacturer E3 influence of the temperature between 0 and 35 C Specifications are subject to change without notice Megohmmeter Models 6550 6555 61 8 MAINTENANCE 8 1 Recharging the Battery Refer 4 1 for full details on recharging the battery The Megohmmeter Model 6550 6555 is equipped with a rechargeable NiMH battery This technology offers several advantages m Long battery charge life for a limited volume and weight m Possibility of quickly recharging your battery m Significantly reduced memory effect you can recharge your battery even if it is not fully discharged m Environmental protection through the elimination of polluting materials such as lead and cadmium After prolonged storage the battery may be completely discharged If so it must be completely recharged Your instrument may not function during part of this recharging operation Full recharging of a completely discharged battery may take several hours In this case at least 5 charge discharge cycles
68. table tools and other similar light industrial household loads Outlet and long branch circuits Outlets at more than 30 ft from CAT III source Outlets at more than 60 ft from CAT IV source TABLE OF CONTENTS 1 INTRODUCTION A a O 1 1 Receiving Yo r Shipment mi aparanta diria Legir bel 5 1 1 1 Accessories and Replacement Parts oooooccccnccnncconccnnncnnncnnnnnnnnnnenancnnnrnnnr mnnn rar rr 5 2 PRODUCT FEATURES oooccoccoccoconconnnnonnoncnnnnnnnnnncnnnnnnnnnnnnnnnnnnnnn nana nnn nara nnn nan nnnnanannaa O 21 Descritor Ai E Ea EE EAEE ri dl A RS 6 2 2 Front Panel Esas ioi eme ntes rd ten sete tec eee eee ec EO te le dr 7 PESO ELEME 8 2 3 1 Example of Display Before Measurement esses eene 8 2 9 2 Example of Display During Measurement 2 ccccceeeeeeseeeeceeeeeeeeeeeseceeeeeeeeeeeneeeseeeeeeeeeeeeeeeeees 8 2 3 3 Example of Display After Measurement esses nenne enne 8 2 4 BUON FUNCHAL ies ale 9 24 1 TEMPBUTTON a acia 9 2 4 2 ALARM But A ei Be eA hee iaa 10 24 3 CONFIO BUR OM A A AA A lite i Ad 11 2 4 8 1 Before the Measurement oocccccccncccncnnnnnnncnnnnnonnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnrnnnenenenineninins 11 2 2 3 2 DUE MESSI A a lades ca 15 244 DISPLAY dizi iuto 16 2 4 5 GRAPH Budo M 16 2215 1 During s MSasurerierfo suain odii ta paa udi IE test e Rhin Rath dames t messi eda aaria gud ee Rond d depu bebes 16 2 4 5 2 After a Measures 16 2 4 6
69. tage and duration of the starting level and of the final level along with the duration of the ramp The total duration of the measurement Total Run Time is calculated by the instrument The voltages can be adjusted in two ranges between 40V and 1100V or between 500V and 15 000V The duration of the steps can range from Start 0 30 Ramp 0 10 End 0 10 to 99 59 Press the arrow button to exit the menu and go back to the main menu 3 2 6 Adjustment of the Alarm Thresholds Press the DISPLAY button to see the following Alarm Settings An audible alarm is triggered for voltages below the following alarm thresholds There is one for each fixed or adjustable voltage and all of them can be modified For a test voltage of 500V the alarm threshold is adjustable from 10kO to 2TQ 15000 V For a test voltage of 1000V the alarm threshold is Adjustable Voltage 1 adjustable from 10kQ to 4TQ Adjustable Voltage 2 For a test voltage of 2500V the alarm threshold is Adjustable Voltage 3 adjustable from 10kQ to 10TQ For a test voltage of 5000V the alarm threshold is adjustable from 10kQ to 15TQ For a test voltage of 10 000V the alarm threshold is adjustable from 10kQ to 25TQ For a test voltage of 15 000V the alarm threshold is adjustable from 10kQ to 30TQ For the adjustable test voltages the alarm threshold depends on the voltage It is adjustable between two values that depend on the test voltage Press the DISPLAY button
70. tance Measurement The capacitance measurement is made automatically during the insulation measurement and is displayed after the measurement has been stopped and the device tested has been discharged 4 9 Measurement of the Residual Current The measurement of the residual current flowing in the device tested is made automatically as soon as the con nection to the device tested is made then during and after the insulation measurement Megohmmeter Models 6550 6555 41 5 MEMORY FUNCTION 5 1 Recording a Measurement Each insulation measurement can be recorded once the measurement process is completed It is not possible to record input voltage measurements prior to starting a test The results are recorded at addresses identified by an object number OBJ and a test number TEST An object can contain 99 tests An object can represent a machine or an installation on which a certain number of measurements will be performed m Atthe end of the measurement press the MEM button m The instrument proposes recording the result at the first available location in memory It is possible to modify the proposed location using the 4 gt anda Y arrow buttons Store MEMORY gt Y Obj Test Date Time Fet 30101 2011 05 26 09 04 500V MEM m Press the MEM button again to confirm the storage location m The instrument then asks you if you want to Store Samples with the measurement Store MEMORY Obj Test Date Time Fet
71. tch to the MR position 5 3 1 Erasing One Record With an object selected use the A Y arrow buttons to select the record to be erased in the list of records in memory Press the CONFIG button The instrument requests confirmation of the deletion Store MEMORY MEMORY am WARNING IKJO 2011 05 28 09 04 Selected data set 0202 2011 05 27 10 43 zu will be cleared 0201 2011 05 27 10 38 0102 2011 05 26 15 04 ed O K 0101 2011 05 26 14 56 C AN C E L Select OK to confirm or CANCEL to cancel The instrument then returns to the top level memory screen 4 01 08 NOTE Deleting a single record doesn t delete it physically only the link to it is deleted The record number can be used again for storing another measurement Physical clearing of data is only accomplished when clearing the whole memory 46 Megohmmeter Models 6550 6555 5 3 2 Erasing All Records Press the CONFIG button The instrument requests confirmation of the deletion Select OK to confirm or CANCEL to cancel MEMORY E 01 08 IVVARNING All data sets will be cleared IO R CANCEL The instrument in this case completely reformats the memory which takes a few minutes During this time it displays WAIT The instrument then returns to the top level memory screen Since there is no longer any record it displays No data records 5 4 Error Codes If an anomaly is detected when the instrument is turned on
72. the insulation resistance it is very useful to cal culate the quality ratios of the insulation the DAR and the PI because they can eliminate the influence of certain parameters likely to invalidate the absolute insulation measurement They also serve to predict the evolution of insulation quality over time The most important of the parameters influencing the measurement results are m temperature and relative humidity with which insulation resistance varies according to a quasi exponential law m the disturbance currents capacitive charging current dielectric absorption current created by the application of the test voltage Even if they gradually fade they interfere with the measurement at the start for a more or less long time depending on whether the insulation is sound or degraded These ratios therefore complete the absolute insulation value and reliably reflect the condition good or bad of the insulation In addition long term observation of the evolution of these ratios is a way to monitor the aging of the insulation For example that of a revolving machine or of a long cable The values of DAR and PI are calculated as follows m DAR R 1 min R 30s 2 values to be taken during a 1 min measurement m PI R 10 min R 1 min 2 values to be taken during a 10 min measurement The times of 1 and 10 minutes for the calculation of the Pl and the times of 30 seconds and 1 minute for the calculation of the DAR can be modified
73. to control and optimize the effects of the product on the environment In particular this instrument exceeds regulation requirements with respect to recycling and reuse bx The trash can vvith a line through it means that in the European Union the product must undergo selective disposal for the recycling of electric and electronic material in compliance with Directive WEEE 2002 96 EC A Precautions Before Use This instrument and its accessories comply with safety standards IEC 61010 1 IEC 61010 031 and IEC 61010 2 030 for voltages of 1000V in Category IV at an altitude of less than 2000m indoors with a degree of pollution of not more than 2 Failure to observe the safety instructions may result in electric shock fire explosion and destruction of the instrument and of the installations m The operator and or the responsible authority must carefully read and clearly understand the various precautions to be taken in use Sound knowledge and a keen awareness of electrical hazards are essential when using this instrument If the instrument is used other than as specified the protection it provides may be compromised thereby endangering you Do not use the instrument on networks of which the voltage or category exceeds those mentioned Do not use the instrument if it seems to be damaged incomplete or poorly closed Before each use check the condition of the insulation on the leads housing and accessories Any item of which
74. value Also record the temperature and the ambient relative humidity If at equivalent temperature and humidity the insulation resistance has fallen significantly the insulation is deteriorated and maintenance must be carried out on the device tested The result remains displayed until another measurement is made the rotary switch is turned to a different posi tion or the measurement configuration is changed After a test with programmed duration Pressing the GRAPH button displays the graphical representation of the results see S 2 4 5 Only for V FIXED and V VAR Pressing the TEMP button opens the temperature menu see 2 4 1 Pressing the MEM button opens the recording menu see 5 1 At any time you can press the HELP button for a reminder of the functions of the buttons Megohmmeter Models 6550 6555 35 4 5 Error Indications The most common error in the case of an insulation measurement is the presence of a voltage on the terminals The instrument can make the measurement if the peak value of this voltage is less than 0 4Vn or 1000VAC max Above this value it is necessary to eliminate the voltage and repeat the measurement If an external voltage appears on the terminals during the measurement and its peak value is greater than 1 1Vn the measurement is stopped and the error is indicated 4 6 DAR dielectric absorption ratio and PI polarization index For V FIXED and V VAR In addition to the quantitative value of
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