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Sensors & Accessories User Manual Sensors

1. 80mm Figure 2 31 LMG Z542 Z545 Z550 suitable bus bars 32 92 www zes com 2 Current Sensors P1 K ation Se between P1 K and S1 k marked with an arrow Perk S1 k S2 Figure 2 32 LMG Z542 Z545 Z550 connection diagram 2 5 1 Safety warnings e Always connect the sensor first to the meter and afterwards to the device under test e If no burden is connected secondary terminals have to be short circuited e Please refer to chapter SAFETY RECOMMENDATIONS 1 25 2 5 2 Specifications Measurement category 600 V CAT IV 1000 V CAT III EN 61010 1 Highest voltage for equipment Um 1 2kV EN 60664 1 Test voltage 6kV 50 Hz 1 min Rated primary Current py 2000 A Rated secondary Current Isy 1A Rated Continuous Thermal Current Jz 4000 A Rated Short Time Thermal Current Tin 100 x Iy 1s Instrument Security Factor FS lt 40 In Degree of pollution l Operating temperature 5 C 40 C l Weight 3 3 kg Bus bar 2x 100mm x 10mm or 3x 80mm x 10mm or round diameter 83mm Minimum center distance between adjacent bus 185mm Dar Output connection screw terminals M5 Philips recessed head screw max 4mm flexible 6mm solid i torque 3 5 Nm 2 5 3 Uncertainty The uncertainties are based on sinusoidal current ambient temperature 5 C 40 C conductor in the middle of the transformer total burden imped
2. 00 00A Use L60 Z68 and LMG specifications to calculate the accuracy of the complete system 2 11 4 Connection of the current clamp L60 Z68 with LMG600 Use current sensor adapter L60 X ADSE In the connector to the LMG600 the adjustment data of the current clamp L60 Z68 is available as well as measuring ranges sensor name and serial number This data is read out of the sensor automaticaly Measuring ranges LMG600 with L60 Z68 Nomialrange7 A 30 o 10 Max TRMS value JA 33 66 132 275 550 1100 77 Range peak value for accuracy calculation A 97 7 195 3 390 6 781 3 1563 3125 Accuracy Use L60 Z68 and LMG600 specifications to calculate the accuracy of the complete system Since the max peak value is limited by the LMG ranges and the current sensor please use range peak value for accuracy calculation to determine the LMG600 accuracy 50 92 www zes com 2 Current Sensors 2 12 AC current clamp 1000 A 1A LMG Z322 Figure 2 52 LMG Z322 ie Figure 2 53 Dimensions of LMG Z322 2 12 1 Safety warnings e Always connect the sensor first to the meter and afterwards to the device under test e The operation of the sensor with load current and without connection to the LMG will cause damage of the sensor and is dangerous for the user Connecting cable without safety insulation Aviod contact to hazardous voltage Please refer to chapter SAFETY RECOMMENDATIONS 1 25
3. 2 5 ZIMMER Sensors amp Accessories for LMG Family User Manual Status April 27 2015 User Manual Sensors amp Accessories Copyright 2015 ZES ZIMMER Electronic Systems GmbH ZES ZIMMER Inc Tabaksm hlenweg 30 D 61440 Oberursel Taunus FRG phone 49 0 6171 628750 phone 1 760 550 9371 fax 49 0 6171 52086 e mail sales zes com e mail usa zes com Internet http www zes com No part of this document may be reproduced in any form or by any means without the permission in writing from ZES ZIMMER Electronic Systems GmbH Observe copyright notice according to DIN ISO 16016 We reserve the right to implement technical changes at any time particularly where these changes will improve the performance of the product 2 92 www zes com Contents Contents 1 Introduction 5 1 1 Dsedsymbol vu 3 2 4 warn en ae ee a a 5 1 2 Safety recommendations zu 2 22 SE 2 ara EEE Eee te 5 1 3 General environmental conditions ran oe 9 Lae VEC che as istan Ea nen en ee add ea a Ar de 10 2 Current Sensors 11 2 1 Precision current transducer 200 A PCT200 ss ss a ara Ben ee eS 11 2 2 Precision current transducer 600 A PCT600 aoaaa aaa 18 2 3 Precision current transducer 2000 A PCT2000 oaaae a 25 2 4 Precision current transformer 1500 A LMG Z502 Z505 Z510 Z520 2 29 2 5 Precision current transformer 4000 A LMG Z542 Z545 Z550 2 222 32 2 6 Precision current transformer 10kA LMG
4. RS232 interface cable DSUB 9 male to DSUB 9 female 1 1 connection length about 1 8m 3 15 1 Safety warnings e Please refer to chapter SAFETY RECOMMENDATIONS 1 25 80 92 www zes com 3 Accessories 3 16 LMG600 connection cable for current sensors PSU PSU K L6 Figure 3 21 PSU K L6 shown together with L60 X ADSE and transducer head PSU The LMG600 connection cable PSU K L6 is for the connection of discontinued precision current transducers series PSU It is not recommended for new projects but for the use of previously purchased LMG500 transducers PSU K L6 is a generic cable for the supply and measurement of the current output of PSU60 PSU200 PSU200HF PSU400 PSU700 and PSU1000HF with the I ranges of LMG600 series The Iscale of the corresponding current channel has to be set to the below given values No calibration data range information serial number and sensor name is stored in the cable No additional error terms of the cable have to be considered If a calibration protocol is required the precision current transducer PSU is calibrated without this cable PSU600 is not pin compatible to PSU K L6 please connect this transducer to LMG600 via SSU4 and PSU K3 K5 K10 and SSU4 K L31 For new projects please see precision current transducers series PCT 3 16 1 Safety warnings e Always connect the sensor first to the meter and afterwards to the device under test e Attention when using busbar without insulatio
5. 1 25 3 11 2 Specifications No safety insulation working voltage max 50 V DSUB9 male DSUB9 female 5 70 C Cable length LMG Z DV3 3m LMG Z DV5 5m LMG Z DV10 10m LMG Z DV15 15m 76 92 www zes com 3 Accessories 3 12 Shielded Sensor extenion cable with extended temperature range LMG Z SVT Figure 3 17 Shielded Sensor extention cable with extended temperature range This is a high quality very well shielded Sensor extention cable high immunity against EMC It is screwable with UNC4 40 threads at both connectors The cable is halogen free It can be used to extend the cable length of the PSU and PCT connection cables In this case it is used between the precision current sensor PSU60 200 400 600 700 1000 or PCT200 600 and the LMG specific connection cable to the LMG All pins are connected 1 1 except pin2 and pin7 they are left open for the use with current sensors PSU and PCT This sensor extention cable will not do the job as a RS232 connection cable 3 12 1 Safety warnings e Attention No safety insulation working voltage max 50V when using Busbar without insulation or other not insulated items assure safety distance between the extention cable and hazardous voltages e Please refer to chapter SAFETY RECOMMENDATIONS 1 25 3 12 2 Specifications No safety insulation working voltage max 50 V DSUB9 male DSUB9 female 40 C 90 C Cable length LMG Z SVT5 5m LMG Z SVT10 10m LMG Z
6. 4 2 How to connect and supply PCT with LMG600 I xI ndur JUdIING J9911Pp 398gJI9 UI Inseow u Snyd 0099WT 192ZAjeue I9Mod uoIsty99lg HSdv x 09 T spe9f A1IoJeIoge AJoJes p epueIs Iojdepe JOSU9S JUOTING QQOOOW 9 I 1 009 Ld VOISLOd 10 9T M 007LOd yrun Ajddns Josuos JudIINg age UOTJOOUUOD nseow u Snyd wsi STIAA Z IWI WOT OLAG Z DWT w CAG Z OWT wg AG Z OWT WSI SILAS Z DWT WOT OLLAS Z DWT w SLAS Z OWI 0007 LOd 07 10u WOZ7 OTINSA LId WOT OL ANSd LOd us CANSd LOd wz TANSd LOd a3ue I a nJe1adwe papusa xd age uone3uolg ges uONJ9UUOI ojqeo uonesuolqg N N p gt puswwo9asl JouN Inq ojg ssod gt Figure 4 4 How to connect and supply PCT with LMG600 009 LOd 0007LOd ee I99npsUue1 JUIIING UOTSIOIIg IIONpPSuvI JUIIING UOTSIOIIg 87 92 www zes com User Manual Sensors amp Accessories 4 3 Avoid measuring errors due to shield currents Figure 4 5 shielded high voltage cable In the medium voltage range e g wind energy and also electrically powered vehicles shielded cabels are commonly used for power connections Current measurement with feed through current transducers and shielded cables can lead to measuring errors Only the current in the inner conductor is relevant but its magnetic field is superimposed with the magnetic field of the shield
7. The MAK1 is in compliance with IEC61010 1 and was constructed for voltages up to 250 V CAT II 3 6 1 Safety warnings e Always connect the adaptor first to the meter and afterwards to the device under test e Important If you dont want to measure the current the jacks I and I have to be short circuit to enable the current to flow e Please refer to chapter SAFETY RECOMMENDATIONS 1 25 3 6 2 Specifications Rated voltage 250 V CAT II 70 92 www zes com 3 Accessories 3 7 Adaptor for measurement at 16A 3 phase devices LMG MAK3 SD PE max 300 520V CATIII 16A a cE oN ZS ZIMMER a Elect ronic Systems 5 CIME Figure 3 9 LMG MAK3 The MAK3 is an adaptor for measuring at 3 phase systems up to 16A per phase It is developed for the instrument series LMG but you can also connect other instruments The supply is done by a about 2m long wire The schuko jack is to supply the instrument If you are measuring a load the power consumption of the instrument is not taken into account because it is supplied before the measuring connectors If you are measuring a generator you should supply the instrument from another jack to avoid measuring errors With the MAK3 you can measure the voltage of the three phases jacks U1 U2 and U3 against the neutral connector U1 U2 and U3 But you can also measure the linked voltages The three currents are also accessable from I1 I2 and I3 t
8. and afterwards to the device under test A e The operation of the sensor with load current and without connection to the LMG will cause damage of the sensor and is dangerous for the user e Connecting cable without safety insulation Aviod contact to hazardous voltage www zes com 43 92 User Manual Sensors amp Accessories e Please refer to chapter SAFETY RECOMMENDATIONS 1 25 Figure 2 45 Protection against electric shock 2 9 2 Specifications Nominal input current 1000 A Degree ofpoltion Pp lt o o 2 9 3 Uncertainty The uncertainties are based on sinusoidal current ambient temperature 23 3 C calibration interval l year conductor in the middle of the clamp signal frequency 50 Hz 60 Hz linear interpolation is allowed Current Amlitude uncertainty Phase uncertainty in of measuring value in 0 75 Use L60 Z60 and LMG specifications to calculate the accuracy of the complete system 44 92 www zes com 2 Current Sensors Influence of coupling mode This current clamp can measure only AC currents DC offset could cause additional errors Therefore this clamp should only be used with the LMG setting AC coupling The accuracies are only valid for this case 2 9 4 Connection of the current clamp L60 Z60 with LMG600 Use current sensor adapter L60 X ADSE In the connector to the LMG600 the adjustment data of the current clamp L60 Z60 is available as well as measuring ranges s
9. figures listings etc consist of their identifier followed by the book symbol and the page number References to chapters sections and subsections consist of the heading of the section and the sectional number followed by the book symbol and the page number In the PDF version of this document one can click on any of these reference elements to jump to the reference 1 2 Safety recommendations This equipment was designed according to IEC 61010 and EN 61010 and has left the factory in a mechanically and electrically safe condition To maintain safe operation the user must follow the instructions and warnings contained in this manual The equipment must only be used for the purposes described in this manual If damage to the equipment is suspected it must be removed from operation to prevent possible further damages or injury In addition the required repair work must be carried out by a trained technician at a suitable repair facility Until shown to be otherwise the equipment must be considered unsafe to operate if e there is visual evidence of physical damage www zes com 5 92 Oe amp D 5 USED SYMBOLS 1 15 gt gt e gt e gt PEPE User Manual Sensors amp Accessories it fails to operate correctly the equipment has been heavily overloaded due to to high currents short circuit or something similar the equipment has been heavily overloaded due to to high voltages the equi
10. www zes com 51 92 User Manual Sensors amp Accessories Figure 2 54 Protection against electric shock 2 12 2 Specifications Nominal input current 1000 A Transformation ratio Measuring range Maximum input overload Bandwidth Burden lt 2 5 VA Measurement category 600 V CAT III Degree of pollution Temperature range 10 C 50 C 650 8 Output connection 2m fixed lead with 4mm safety plugs 2 12 3 Uncertainty The uncertainties are based on sinusoidal current ambient temperature 23 3 C calibration interval l year conductor in the middle of the clamp signal frequency 50 Hz 60 Hz linear interpolation is allowed Current Amlitude uncertainty Phase uncertainty in of measuring value in rs ee ee ee OA tt5 o E O 20A 075 100A 0 5 1A 0 75 Use LMG Z322 and LMG specifications to calculate the accuracy of the complete system 52 92 www zes com 2 Current Sensors 2 13 AC current clamp 3000 A 1A LMG Z329 Figure 2 56 Dimensions of LMG Z329 2 13 1 Safety warnings e Always connect the sensor first to the meter and afterwards to the device under test e The operation of the sensor with load current and without connection to the LMG will cause A damage of the sensor and is dangerous for the user e Connecting cable without safety insulation Aviod contact to hazardous voltage e Use safety cover P Figure 2 57 54 for protection against short circuits during cl
11. 2 2 10 Connection of the sensor PCT600 with LMG450 Use PCT600 K L45 and SSU4 standard version to SSU DSUBOfF amp Figure 2 17 PCT600 K L45 22 92 www zes com 2 Current Sensors This cable PCT600 K L45 is used to connect a precision current sensor PCT 600 to the power meter LMG450 and to supply it by a sensor supply unit SSU4 In the connector to the LMG450 the adjustment data of the PCT600 head are available as well as the serial number The rangenames of LMG450 the sensor name and calibration data are read out of the sensor EEPROM automaticaly Measuring ranges LMG450 with PCT600 Nommalrange A Tier 373 175 150 300 600 Max peak value A 28 125 56 25 1125 225 450 900_ Accuracy Use PCT600 and LMG450 specifications to calculate the accuracy of the complete system Add 0 01 of measuring value Add 100mA DC offset tolerance 2 2 11 Connection of the sensor PCT600 with LMG500 Use PCT600 K L50 and L50 Z14 supply via LMG500 Figure 2 18 PCT600 K L50 and L50 Z14 This cable PCT600 K L50 is used to connect a precision current sensor PCT600 to the power meter LMG500 and to supply it by a sensor supply unit SSU4 In the connector to the LMG500 the adjustment data of the PCT600 head are available as well as the serial number The rangenames of LMG500 the sensor name and calibration data are read out of the sensor EEPROM automaticaly Measuring ranges LMG500 with PCT600 Nominal
12. 53 i 221 469 Measuring ranges LMG600 with PSU400 Set Iscale to 2000 Limited by PSU400 to Max TRMS value 400A and Max peak value 400 A Nommalrange7A 10 20 0 80 160 300 00 Max TRMS vane 7A 11 22 44 88 176 330 660 Max peak value A 28 56 112 224 448 938 1876 Measuring ranges LMG600 with PSU700 Set Iscale to 1750 Limited by PSU700 to Max TRMS value 700A and Max peak value 700 A Nominal range A 8 73 1117 1050 wi Max TRMS value A 9 625 19 38 5 154 288 75 1155 Max peak value A 24 5 49 98 196 820 75 1641 5 3281 25 Measuring ranges LMG600 with PSULOOOHF Set Iscale to 1000 Limited by PSU1000HF to Max TRMS value 1000 A and Max peak value 1000 A It is possible to supply up to four PSU1000HF from LMG600 If more PSU1000HF are needed please use sensor supply unit SSU4 with modification for PSU1000HF and PSU K3 K5 K10 and SSU4 K L31 Nominal range A 15 1012040 780 150 1300 6007 1200 1 11 22 44 88 Max TRMS value A 5 5 165 330 660 1320 82 92 www zes com 3 Accessories 3 16 4 Connection elongation To use the current sensor with a longer connection length between power meter and PSU connect a well shielded extention cable between the PSU DSUB9f plug and the PSU connection cable DSUB9m plug and screw both plugs together This ext
13. 8 1 Safety warnings e No safety isolation measurements only at insulated conductors allowed e Always connect the sensor first to the meter and afterwards to the device under test e The operation of the sensor with load current and without connection to the LMG will cause damage of the sensor and is dangerous for the user e Connecting cable without safety insulation Aviod contact to hazardous voltage e Please refer to chapter SAFETY RECOMMENDATIONS 1 25 2 8 2 Specifications 66A 7 1OApk Maximum input overload 500 A for 1s Bandwidth 5 Hz 50 kHz Isolation bare conductor phase ground 30 Veff insulated conductor see cable spec Degree of pollution 10 C 450 1205 Output connection 3m fixed lead with DSUB15 plug to LMG optional 1m 10m www zes com 41 92 A User Manual Sensors amp Accessories With its high basic accuracy the lower cut off frequency of 5Hz and the upper cut off frequency of 50kHz this clamp fits best for measurements at frequency inverter output The internal error compensation circuit is designed especial for this application 2 8 3 Uncertainty The uncertainties are based on sinusoidal current ambient temperature 23 3 C calibration interval lyear conductor in the middle of the clamp The values are in of measuring value of measuring range peak and in phase error in degree Influence of coupling mode This current clamp can measure only AC currents DC offset
14. Z562 Z570 0 35 2 7 Precision current transformer 10kA LMG Z582 Z590 38 2 8 Active error compensated AC current clamp 40 A L60 Z406 41 2 9 Error compensated AC current clamp 1000 A L60 Z60 2 2m nn 43 2 10 Error compensated AC current clamp 3000 A L60 Z66 0 46 2 11 AC DC current clamp 1000 A L60 268 2 2 2 2 aaa 49 2 12 AC current clamp 1000 A 1 A LMG Z322 CE on 51 2 13 AC current clamp 3000 A 1 A LMG 2329 Connor 53 2 14 Precision wideband current transformer 100 A WCT100 0 59 2 15 Precision wideband current transformer 1000 A WCT1000 57 2 16 HF summing current transformer L95 Z06 Z06 HV aa aaa 59 3 Accessories 63 3 1 PCT current sensor supply unit PCTSIU4 2 5 Bus hee See Ee eS 63 3 2 Shielded PCT connection cable PCT DSUB 66 3 3 LMG600 current sensor adapter L60 X ADSE 0 67 3 4 Artificial mid point LMG Z AMP 0 022 000 000 68 3 5 Adaptor for measurement at Schuko devices LMG MAS 69 3 6 Adaptor for measurement at IEC connector devices LMG MAKI 70 3 7 Adaptor for measurement at 16A 3 phase devices LMG MAK3 71 3 8 Adaptor for measurement at 32A 3 phase devices BOB CEE3 32 72 3 9 Safety laboratory leads LMG Z307 Z308 Z309 Z2310 Z311 gt a 222 22 73 3 10 Safety
15. electric shock and short circuit 2 10 2 Specifications 2 10 3 Uncertainty The uncertainties are based on sinusoidal current ambient temperature 233 C calibration interval l year conductor in the middle of the clamp signal frequency 50 Hz 60 Hz www zes com 47 92 User Manual Sensors amp Accessories Current Amlitude uncertainty Phase uncertainty in of measuring value in 1A 100A 2 1 6 004 1000 P 1000 A 3000 A 0 5 Use L60 Z66 and LMG specifications to calculate the accuracy of the complete system Influence of coupling mode This current clamp can measure only AC currents DC offset could cause additional errors Therefore this clamp should only be used with the LMG setting AC coupling The accuracies are only valid for this case 2 10 4 Connection of the current clamp L60 Z66 with LMG600 Use current sensor adapter L60 X ADSE In the connector to the LMG600 the adjustment data of the current clamp L60 Z66 is available as well as measuring ranges sensor name and serial number This data is read out of the sensor automaticaly Measuring ranges LMG600 with L60 Z66 Nommalrange7 A 15 30 60 190 240 450 000 1800 3000 Max TRMS value 7A 16 5 33 66 132 264 495 990 1980 3200 Range peak value for accuracy calculation A 42 84 168 336 672 1407 2814 5625 11250 Accuracy Use L60 Z66 and LMG600 specifications to calculate the accuracy of t
16. for the measurement of stand by power An important point is the safety The MAS is in compliance with IEC61010 1 and was constructed for voltages up to 250 V CAT II 3 5 1 Safety warnings e Always connect the adaptor first to the meter and afterwards to the device under test e Attention The PE jack should not be used for earthing external devices It is only allowed to use it for measuring purposes e Important If you dont want to measure the current the jacks I and I have to be short circuit to enable the current to flow e Please refer to chapter SAFETY RECOMMENDATIONS 1 25 3 5 2 Specifications Rated voltage 250 V CAT II l Rated current 16 A www zes com 69 92 A User Manual Sensors amp Accessories 3 6 Adaptor for measurement at IEC connector devices LMG MAK1 Figure 3 8 LMG MAK1 The MAK1 is an adaptor for measuring at single phase devices with IEC inlet connector up to 10 A It was developed for the instrument series LMG The supply is done by a IEC inlet cord which must be connected to the MAK1 The load is connected by the fixed mounted cord With the MAK1 you can measure the voltage jacks U and U The current is also accessable from I to I This jacks have to be connected to the jacks of the measuring instrument The internal wiring is done so that the load is measured with correct current This wiring is perfect suited for the measurement of stand by power An important point is the safety
17. jaw clip for current and voltage connection LMG Z301 75 3 11 Shielded DSUB9 extention cable LMG Z DV 2 2 2 m nn nn 76 3 12 Shielded Sensor extenion cable with extended temperature range LMG Z SVT 77 3 13 DSUB Adapter with screwed terminal connection LMG DSUBIO 78 3 14 IEEE488 bus cable UMG 2312 22313 Z314 2 24a 8a 2 ee A ee eee ne 79 3 15 RS232 interface cable LMG Z317 4 zz aa A 242m RE Hanna 80 3 16 LMG600 connection cable for current sensors PSU PSU K L6 81 3 17 Insulated 4mm connecting plug LMG SCP 2 2 2 En En 84 4 FAQ frequently asked questions Knowledge base 85 4 1 Avoid distortion when using external sensors in noisy environment 2 22 2222 85 4 2 How to connect and supply PCT with LMG600 aaa 2 Emm a a aa 87 4 3 Avoid measuring errors due to shield currents 2 o oo a 88 4 4 Range extension by changing primary ratio at current sensors 89 4 5 Hints for wiring current transformers or HST toLMG 90 4 0 Ee DUTrden Resistor 2 Gos es amp hee He ah ee Soe eee ee ee ee ee ee 91 A gt SUPDPOFL TeqUCSt og ah A kn 3 heh oe e bk Se SR ee Ue EE DS A 92 www zes com 3 92 1 Introduction 1 Introduction 1 1 Used symbols This manual describes and explains symbols which are found here and displayed on the equipment Observation of these warning signs is required for safe operation Electric shock This sy
18. needed the second primary winding can be left open The guard terminal may be grounded to bypass capacitiv currents from input to output This reduce errors introduced by common mode voltage 2 16 1 Safety warnings e Always connect the sensor first to the meter and earth the guard terminal and afterwards to the device under test www zes com 59 92 User Manual Sensors amp Accessories e The guard terminal must be grounded to bypass capacitiv currents from input to output This also reduce errors by common mode voltage e Please refer to chapter SAFETY RECOMMENDATIONS 1 25 2 16 2 Specifications ISA a Tor 2 or TDD ISA 3V set scale to 6 10T 50 safety sockets 4mm green yellow Size L W H 120mm 65mm 45mm a L95 Z06 b L95 Z06 HV Working voltage 600 V CAT III Working voltage 1000 V CAT II Transient overvoltage 10kVpk Input connection free highvoltage wire approx 0 8m Input connection safety sockets 4mm Weight 200 g 300 2 16 3 Uncertainty The uncertainties are based on sinusoidal current ambient temperature 23 3 C calibration interval l year Frequency Amlitude uncertainty Phase uncertainty in of measuring value 5 kHz 500 kHz 105 Use L95 Z06 L95 Z06 HV and LMG specifications to calculate the accuracy of the complete system 2 16 4 Improving the accuracy due to common mode effects In high frequency applications with current measurement on high common m
19. not for PCT2000 66 92 www zes com 3 Accessories 3 3 LMG600 current sensor adapter L60 X ADSE Figure 3 5 L60 X ADSE The special design of all LMG600 sensors makes them very easy and comfortable to use The DSUB15 plug contains the identification of the sensor type the measuring ranges including the needed scaling and several more parameters The LMG600 reads this values and the meter will automatically be configured to the optimum adjustments for using this special sensor The LMG range setup is automaticaly taken from the sensor EEPROM Further on we correct some of the sensor errors transfer error delay time So you get the best measuring results with each sensor For all special LMG600 sensors the Adapter L60 X ADSE is needed because internally it is necessary to connect the system ground CPU Sensor supply with the ground of the measuring channel Both signals are connected with a DSUB15 plug without galvanic separation The adapter L60 X ADSE guarantees that no measuring leads are connected to the measuring channel at the same time and prevents electrical shock www zes com 67 92 User Manual Sensors amp Accessories 3 4 Artificial mid point LMG Z AMP Figure 3 6 LMG Z AMP When measuring at three phase systems without accessible star point typical for frequency inverters an artificial star point is needed for measurements in star connections If necessary the losses of
20. range A Max TRMS value A 12 5 Oo Max peak value A 7 031 Accuracy Use PCT600 and LMG500 specifications to calculate the accuracy of the complete system Add 0 01 of measuring value Add 100mA DC offset tolerance www zes com 23 92 User Manual Sensors amp Accessories 2 2 12 Connection elongation To use the current sensor with a longer connection length between power meter and PCT connect a well shielded extention cable between the PCT DSUB9f plug and the PCT connection cable DSUB9m plug and screw both plugs together This extention cable is available at ZES LMG Z SVTxx or LMG Z DV in different lenths from 5m to 50m Interference from strong electromagnetical disturbed environments may affect the measurement accuracy This depends from the respective installation in the complete system and is out of responsibility of ZES 24 92 www zes com 2 Current Sensors 2 3 Precision current transducer 2000 A PCT2000 Figure 2 19 PCT2000 Figure 2 20 PCT2000 mechanical dimensions 2 3 1 Safety warnings e Always connect the sensor first to the meter and afterwards to the device under test A e Attention when using busbar without insulation regard DSUB cable insulation or aviod contact e Please refer to chapter SAFETY RECOMMENDATIONS 1 2 5 25 92 www zes com User Manual Sensors amp Accessories 2 3 2 Specifications Nominal input current rms 2000 A Maximum input cur
21. sensor PCT200 with LMG600 Use PCT200 K L6 and L60 X ADSE supply via LMG600 Figure 2 7 PCT200 K L6 and L60 X ADSE This cable PCT200 K L6 is used to connect the precision current transducer PCT200 to the power meter LMG600 In the connector to the LMG600 the adjustment data of the PCT200 head is available as well as measuring ranges sensor name and serial number This data is read out of the sensor automaticaly 14 92 www zes com 2 Current Sensors Connection e switch all power off e plug the connector labeled PCT200 to the sensor e plug the connector labeled LMG600 to the adapter L60 X ADSE mounted on the LMG600 current channel e now switch on the power and make your measurements the power of the equipment under test should be switched on at least Measuring ranges LMG600 with PCT200 Accuracy Use PCT200 and LMG600 specifications to calculate the accuracy of the complete system Since the max peak value is limited by the LMG ranges and the current sensor please use range peak value for accuracy calculation to determine the LMG600 accuracy 2 1 7 Connection of the sensor PCT200 with PCTSIU4 For the use of PCT200 with other instruments with current input and supply via PCTSIU4 Connect PCT200 with PCT DSUB to PCTSIU4 Secondary current output at PCTSIU4 via two 4mm connectors 2 1 8 Connection of the sensor PCT200 with SSU4 It is not recommended for new projects but the sensor s
22. 2086 Email sales zes com URL http www zes com 10 92 www zes com 2 Current Sensors 2 Current Sensors 2 1 Precision current transducer 200 A PCT200 Figure 2 1 PCT200 GE 109 mm 7 62 mm i m 12 5 mm Figure 2 2 PCT200 mechanical dimensions 11 92 www zes com User Manual Sensors amp Accessories Figure 2 3 PCT200 mounting bushings on the back maximum screw depth 6mm 2 1 1 Safety warnings e Always connect the sensor first to the meter and afterwards to the device under test e Attention when using busbar without insulation regard DSUB cable insulation or aviod contact e Please refer to chapter SAFETY RECOMMENDATIONS 1 25 2 1 2 Specifications Nominal input current rms 200 A 300A 500 Maximum input overload 1500 A 100 ms normal operation after overload D 1500 A 10s Sensor shut down but not damaged Rated isolation voltage rms reinforced isolation m Rms voltage for AC isolation test 50 60 Hz l min between primary and secondary and shield 3 6kV between secondary and shield 200 V Impulse withstand voltage Creepage distance 10m Comparative Tracking Index CTI 600 Operating temperature 40 C 65 C 40 C 85 C input current rms lt 200 A Storage temperate 00 BHT 6K Supply 15 V 0 75 V 700 mA EN 61326 12 92 www zes com 2 Current Sensors Max current Arms 25 deg 100 v E Max curr
23. LOY 415754 Safety EN 61010 1 2010 EMC EN 61326 1 3 1 3 Installation Grounding the transducer head is strictly recommended Even if there is no requirement for safety ground on the product for safety reasons the transducer head PCT is strictly recommended to be connected to earth ground If in case of damage in the installation a bare conductor connects the aluminium housing this will prevent the transducer head and the LMG connection cable to be energised Connect the earth wire to the transducer head PCT using a ring terminal and a toothed locked washer designed for the maximun short circuit current of the installation fastened to one of the 6 5mm mounting holes Grounding of the transducer head PCT is also recommended to lead away capacitive coupled distortion Also if bare conductors can be used up to the above values it is strictly recommended to use insulated conductors only By this is prevented that the housing of a transducer might short circuit 64 92 www zes com 3 Accessories two conductors Further more there are no problems when the secondary cable touches a primary conductor Do not power up the device before all cables are connected Connect the PCT DSUB cable between supply unit and the sensor Connect an instrument with low impedance current path on the secondary output 4mm red and black connectors When all connections are secured connect mains power When mains is applied a green light diode at th
24. SVT15 15m www zes com 77 92 User Manual Sensors amp Accessories 3 13 DSUB Adapter with screwed terminal connection LMG DSUBIO Figure 3 18 LMG DSUBIO picture similar Adapter from DSUB to screwed terminal connection for easy access to LMG process signal interface and external synchronisation For assembly on DIN rail NS35 7 5 3 13 1 Safety warnings e Please refer to chapter SAFETY RECOMMENDATIONS 1 25 3 13 2 Specifications Conductor cross section max 1 5mm AWG16 Stripping length 6mm Available are LMG DSUBIO25M for DSUB25f LMG600 process signal interface including 2m connection cable DSUB25f to DSUB25m LMG DSUBIO15M for DSUB15f LMG600 process signal interface LMG DSUBIO15F for DSUB15m LMG600 external sync including 2m connection cable DSUB15f to DSUB15m LMG DSUBIO9M for DSUB9f LMG600 process signal interface including 2m connection cable DSUB9f to DSUB9m 78 92 www zes com 3 Accessories 3 14 IEEE488 bus cable LMG Z312 Z313 Z314 Figure 3 19 IEEE488 bus cable IEEE 488 bus cable full screened metal plug socket case to maintain the excellent noise immunity of all LMG instruments Cable length e LMG Z312 Im e LMG Z313 2m e LMG Z314 Am 3 14 1 Safety warnings e Please refer to chapter SAFETY RECOMMENDATIONS 1 25 www zes com 79 92 User Manual Sensors amp Accessories 3 15 RS232 interface cable LMG Z317 Figure 3 20 RS232 interface cable
25. Sensor is unpowered and secondary circuit is open e Sensor is unpowered and secondary circuit is closed e Sensor is powered and secondary circuit is open e Sensor is powered and secondary circuit is interrupted during measurement Note that the sensor core will be magnetized in all four cases leading to a small change in output offset current 28 92 www zes com 2 Current Sensors 2 4 Precision current transformer 1500 A LMG Z502 Z505 Z510 Z520 Figure 2 24 LMG Z502 Z505 Z510 Z520 34mm 51mm Figure 2 26 LMG Z502 Z505 Z510 Z520 suitable bus bars www zes com 29 92 User Manual Sensors amp Accessories P1 K P2 L Elan between P1 K and S1 k marked with an arrow S1 k S2 Figure 2 27 LMG Z502 Z505 Z510 Z520 connection diagram his Busbar side is terminal P2 2010 50432718 Both screws are terminal S2 ae M mm 12 6 kV 750 A py gt 1 A 2 5 i ey 4 KI 0 02 ext 200 FS20 E One screw for connection of current th 70 N 50 Hz One for connection of current measuring device the other screw for short measuring device the other screw for short od one circuit of secondary winding if no measuring s ZES ZIMMER ee winding If no measuring devise connected s AB 1 200 www zes com JA ce s LMG 2502 Both screws are terminal S1 his busbar side is terminal P1 Figure 2 28 topview of LMG Z502 Z505 Z510 Z520 YWiew from side P1
26. The equipment is not designed to detect hazards or similar A wrong reading e g by choosing a wrong filter or range could give you the wrong impression of a safe state Use appropriate tools e g a voltage detector instead of this equipment to detect dangerous situations www zes com 1 Introduction instrument They might not be designed to operate in the same EMC environment as the instrument and therefore they could be disturbed This could lead to unwanted operation of the instrument like changing ranges or something similar e Be careful when connecting external equipment like an external keyboard or mouse to an N protective conductor and the power supply see CONNECTION TO POWER SUPPLY AND PROTECTIVE CONDUCTOR 1 2 1 7 then connect it to the measurement circuit see CONNECTION TO MEASUREMENT CIRCUIT 1 2 2 8 Then switch on the instrument and the equipment and finally after double checking the wiring switch on the measurement circuit e When connecting the instrument watch the order of connections First connect it to the N standards for equipment for measurement control and laboratory use In a concrete application e This equipment was designed according to IEC 61010 and EN 61010 which are general safety N or environment further safety standards might be applicable and have to be regarded in addition 1 2 1 Connection to power supply and protective conductor corresponds to the voltage printed on the model s ident
27. View fram side P2 P1 K S1 Kk Figure 2 29 orientation of LMG Z502 Z505 Z510 Z520 2 4 1 Safety warnings e Always connect the sensor first to the meter and afterwards to the device under test e If no burden is connected secondary terminals have to be short circuited 30 92 www zes com 2 Current Sensors e Please refer to chapter SAFETY RECOMMENDATIONS 1 25 2 4 2 Specifications 15 Hz SEH 1 250 cos beta 1 Measurement category 600 V CAT IV 1000 V CAT III EN 61010 1 Highest voltage for equipment U 1 2kV EN 60664 1 Test voltage 6kV 50 Hz 1 min Rated primary Current py 750 A Rated secondary Current Is 1A Rated Continuous Thermal Current Jz 1500 A Rated Short Time Thermal Current Iin 70 x In 18 Instrument Security Factor FS lt 20 x In Degree of pollution Operating temperature 2 5 Bus bar lx 60mm x 10mm or 2x 50mm x 10mm or lx 40mm x 34mm or round diameter 51mm primary fixing device M4x40 slotted headless screw max 2 Nm Minimum center distance between adjacent bus pars Output connection screw terminals M5 Philips recessed head screw max 4mm flexible 6mm solid tishtening torque 3 5 Nm 2 4 3 Uncertainty The uncertainties are based on sinusoidal current ambient temperature 5 C 40 C conductor in the middle of the transformer total burden impedance including wiring and current path of LMG between 1 and 2 5 Q center distance betwe
28. ack socket is internally connected to an electromagnetic shield If the current transformer is used on high common mode voltage at high frequency this socked can be connected to earth to conduct the disturbance to earth 58 92 www zes com 2 Current Sensors 2 16 HF summing current transformer L95 Z06 Z06 HV R 2s ZIMMER Transtormer ee Systems AF Summing Current s A ce Figure 2 60 HF summing current transformer z ZIMMER s Etectronie System anstormer A instructions for safety See manua Figure 2 61 Highvoltage HF summing current transformer L95 Z06 is an accessory for the precision power meters LMG with a high bandwidth It simplifies the measurement of output power in high frequency applications with floating potential For example lighting applications ultrasonic system The high frequency design provides best accuracy at high frequencies The current transformer has a voltage output for the direct connetion to the LMG external Shuntinput The high voltage version L95 Z06 HV eliminate the 4mm safety sockets as input terminals The limited clearances and creepage distances are removed by usage of highvoltage wire All other specifications are the same as L95 Z06 The two galvanically separated primary windings are suitable to use in series to increase the sensitivity for small currents And it can be used as well to build the difference of two e g lamp currents If not
29. amping e Please refer to chapter SAFETY RECOMMENDATIONS 1 25 www zes com 53 92 User Manual Sensors amp Accessories 36 Figure 2 57 Protection against electric shock and short circuit 2 13 2 Specifications Nominal input current 3000 A 2 13 3 Uncertainty The uncertainties are based on sinusoidal current ambient temperature 23 3 C calibration interval l year conductor in the middle of the clamp signal frequency 50 Hz 60 Hz Current Amlitude uncertainty Phase uncertainty in of measuring value in 1A 100A 2 1 6 004 1000 P 1000 A 3000 A 0 5 Use LMG Z329 and LMG specifications to calculate the accuracy of the complete system 54 92 www zes com 2 Current Sensors 2 14 Precision wideband current transformer 100 A WCT100 23 ZIM MER JEiectronle ae t Ira tehand curren precision Wit 100A 1A neue ac nsformel output lt l a gi o oe ns r safely instruct 0 See manual Figure 2 58 WCT100 WCT100 is an accessory for the precision power meters LMG with a high bandwidth The high frequency design provides best accuracy at high frequencies It also simplifies the measurement of output power in high frequency applications with floating potential The current transformer has 1 A current output for the direct connection to the LMG current input For the connection of WCT100 to the precision power meter LMG use narrow twisted laborator
30. ance including wiring and current path of LMG between 1 and 2 5 Q center distance between adjacent bus bars gt 185 mm www zes com 33 92 User Manual Sensors amp Accessories 100 A 400 A lt 0 04 lt 0 07 lt 0 08 lt 0 07 400 A 1000A f lt 0 02 lt 0 05 lt 0 05 lt 0 05 1000A 2400 A lt 0 02 lt 0 04 lt 0 05 lt 0 04 2400 A 4000A lt 0 02 lt 0 05 lt 0 05 lt 0 05 lt 0 1 lt 0 08 At 30 Hz 48 Hz and 66 Hz 440 Hz twofold the errors at 15 Hz 30 Hz and 440 Hz 5 kHz threefold the errors Calibration interval of 1 year is recommended Use LMG Z542 Z545 Z550 and LMG specifications to calculate the accuracy of the complete system 2 5 4 Connection of the precision current transformers with LMG Use LMG inputs I and I please refer to HINTS FOR WIRING CURRENT TRANSFORMERS OR HST TO LMG 4 590 34 92 www zes com 2 Current Sensors 2 6 Precision current transformer 10kA LMG Z562 Z570 Figure 2 33 LMG Z562 Z570 285 Ma e in mm Dimensions in mm Figure 2 35 LMG Z562 Z570 suitable bus bars www zes com 35 92 A User Manual Sensors amp Accessories P1 K P2 L S1 k S2 l Figure 2 36 LMG Z562 Z570 connection diagram 2 6 1 Safety warnings e Always connect the sensor first to the meter
31. and afterwards to the device under test e If no burden is connected secondary terminals have to be short circuited e Please refer to chapter SAFETY RECOMMENDATIONS 1 25 2 6 2 Specifications Measurement category iv CAT mov CAT III EN 61010 1 Highest voltage for equipment Um 1 2kV EN 60664 1 Test voltage 6kV 50 Hz 1 min Rated primary Current py Rated secondary Current Isy Rated Continuous Thermal Current Ia Rated Short Time Thermal Current J Instrument Security Factor FS Bus bar 3x 160mm x 10mm primary fixing device M5 slotted headless screw max 2 5 Nm Minimum center distance between adjacent bus oars Output connection screw terminals M5 Philips recessed head screw max 4mm flexible 6mm solid tightening torque 3 5 Nm 2 6 3 Uncertainty The uncertainties are based on sinusoidal current ambient temperature 5 C 40 C conductor in the middle of the transformer total burden impedance including wiring and current path of LMG between 1 and 2 5 Q center distance between adjacent bus bars gt 285 mm 36 92 www zes com 2 Current Sensors 250 A 1000 A 1000 A 2500 2500 A 6000 6000 A LOKA lt 0 1 lt 0 08 At 30Hz 48 Hz and 66 Hz 440 Hz twofold the errors at 15 Hz 30 Hz and 440 Hz 5kHz threefold the errors Calibration interval of 1 year is recommended Use LMG Z562 Z570 and LMG specifications to calculate the accuracy of the complete sy
32. could cause additional errors Therefore this clamp should only be used with the LMG setting AC coupling The accuracies are only valid for this case Frequency 5 Hz to 10 Hz to 45 Hz to 1 kHz to 5 kHz to 20 kHz to 10 Hz 45 Hz 1 kHz 5 kHz 20 kHz 50 kHz 1 5 0 25 0 4 0 15 0 15 0 05 0 3 0 15 1 0 25 4 0 5 Phase 6 3 os 2 6 m 2 8 4 Connection of the current clamp L60 Z406 with LMG600 Use current sensor adapter L60 X ADSE In the connector to the LMG600 the adjustment data of the current clamp L60 Z406 is available as well as measuring ranges sensor name and serial number This data is read out of the sensor automaticaly Measuring ranges LMG600 with L60 Z406 Nommalrange 7A 045 09 18 sr rs Im Jo Im Max TRMS vane 7A 0495 099 198 4125 825 165 33 66 Range peak value for accuracy calculation A 1 4655 2 9295 5 859 11 7195 23 445 46 875 93 75 187 5 Accuracy Use L60 Z406 and LMG600 specifications to calculate the accuracy of the complete system Since the max peak value is limited by the LMG ranges and the current sensor please use range peak value for accuracy calculation to determine the LMG600 accuracy 42 92 www zes com 2 Current Sensors 2 9 Error compensated AC current clamp 1000 A L60 Z60 Figure 2 43 L60 Z60 ei Figure 2 44 Dimensions of L60 Z60 2 9 1 Safety warnings e Always connect the sensor first to the meter
33. current and measured together in the current transducer The shield turned back through the transducer will lead to an opposite magnetic field and cancels the resulting magnetic field measured by the transducer to zero The shield effect against the electric field between conductor and transducer is not influenced current transducer current direction in the shield gt a conductor shield Figure 4 6 avoid measuring errors due to shield currents 88 92 www zes com 4 FAQ frequently asked questions Knowledge base 4 4 Range extension by changing primary ratio at current sensors current SOUrCce Eu MD Figure 4 7 external range extension You can use two windings through a current transducer to expand its current range In this example one winding with one turn for big currents and one winding with ten turns for small currents are taken If you change the scaling value of the corresponding power meters current channel the different turns are taken into account for all of the measuring values This approach is suitable for all feed through and clamp on current transducers 4 4 1 Example e precision power meter LMG670 e current sensor PCT200 e measuring ranges full range 1 turn 2 5A 200 A 10 turns 250mA 20 A www zes com 89 92 User Manual Sensors amp Accessories 4 5 Hints for wiring current transformers or HST to LMG The appropriate cable types to connect the t
34. e current path to prevent high voltages at the output of the external device In general it is dangerous to interrupt the secondary side of a current transformer as there might appear very high voltages which could lead to electric shock e Cables from to external sensors are usually designed to operate with low voltages e g lt 15 V When using these in an environment with a high voltage circuit use caution as further isolation might be necessary For the operation itself the isolation is sufficient but if these cables touch a bare conductor with dangerous voltages this can cause an unsafe condition In such cases further isolation might be necessary z A For example the secondary cables of a current clamp have a very low voltage but they could touch the current bar which has a dangerous voltage against earth e Especially when establishing external connections special care must be taken to prevent electrostatic discharge e Different sensors might require different connection cables to the instrument When changing a sensor please ensure that a correct cable is used Usually the cable is dedicated to a sensor e Keep away from energized measurement circuits to prevent electric shock When performing measurements on installations or circuits please observe all safety regulations and guidelines In particular only suitable measurement accessories should be used Only suitably qualified personnel are permitted to work with energ
35. e front next to symbol power will light green For each sensor connected a green light diode will light on the front if the connection is correct and the sensor is operating within normal range 3 1 4 Package content e PCTSIU4 supply unit e Europe power cable and US Asia power cable e 4 x rubber feet for table use e Ax rack screw kits for 19 rack mount 3 1 5 Accessories Connection cable PCT DSUB between Precision current transducers PCT and PCTSIU4 Available cable lengths 2m 5m 10m 20m 20m not for PCT2000 www zes com 65 92 User Manual Sensors amp Accessories 3 2 Shielded PCT connection cable PCT DSUB Figure 3 4 Shielded PCT connection cable This is a high quality well shielded PCT connection cable with a high immunity against EMC It is intended to be used to connect PCT200 PCT600 or PCT2000 to the supply unit PCTSIU4 It is available in different lengths 2m 5m 10m and 20m 3 2 1 Safety warnings e Attention No safety insulation working voltage max 50V when using Busbar without insulation or other not insulated items assure safety distance between the extention cable and hazardous voltages e Please refer to chapter SAFETY RECOMMENDATIONS 1 25 3 2 2 Specifications Voltage drop PCT DSUB2 max 0 24V 1A PCT DSUB5 max 0 45V 1A PCT DSUB10 max 0 8V 1A PCT DSUB20 max 1 5V 1A not for PCT2000 Cable length PCT DSUB2 2m PCT DSUB5 5m PCT DSUB10 10m PCT DSUB20 20m
36. econdary side has neither galvanic contact with the load current nor with earth the current channel is floating on an undefined potential The accuracy can be improved by draging down the floating voltage to about earth potential and give the distortion currents a low impedance way to earth www zes com 85 92 86 92 User Manual Sensors amp Accessories current transducer LMG Baur power signa meter Figure 4 2 Grounding of common current sensor signals In applications with a high dU dt and sensors with onboard electronics it might be profitable to shield the isolated primary conductor e g with copper foil connected only at one side to earth This shield ought to bleed of the capacitive coupled distortion to earth and keep them away from the sensor electronics This policy can also be used to enhance accuracy and reject distortion with other current transducers isolated fi aa Pu io a A a Figure 4 3 Grounding of sensors with onboard electronics In all cases you should adapt the bandwidth of the power meter to the bandwidth of the current sensor and the signal It is useless to measure the active power with a 5kHz bandwidth current clamp and a power meter bandwidth of 10 MHz in this case a signal filter of e g 10kHz will not affect the measuring signal significantly but will highly reduce HF distortion and noise www zes com A FAQ frequently asked questions Knowledge base
37. ective conductor terminal with an adequately rated cable to a suitable earthing point The additional protective conductor terminal is limited to currents up to 32 A If reliable earthing cannot be realized the connections between the circuit under test and the equipment instrument must be fused appropriately The earth terminal on the equipment instrument must not be used as the only earth connection for the equipment instrument nor must the circuit under test nor any other equipment instrument be earthed by this terminal The additional protective conductor is marked with following symbol www zes com 7 92 User Manual Sensors amp Accessories 1 2 2 Connection to measurement circuit e Remove all energy sources from the measurement circuit before making any connections between this circuit and the analyzer Do not connect or disconnect any cables while they are carrying voltage relative to earth e Use only measurement cables with safety connectors and sufficient cross section Be sure that the cables have a sufficient voltage and current rating and are usable for the desired overvoltage and measurement category Cables not having safety but standard connectors might have insufficient clearance and creepage distances even if they are plugged into the socket So there is always a risk of an electric shock gt gt Use only colored cables which match to the color of the jack to help prevent a wrong connection Whe
38. en adjacent bus bars gt 135 mm Amplitude error of measuring value Phase error at 48 66 Hz Current Z520 5A BIA 0 05 lt 0 1 lt 0 1 lt 0 1 lt 0 3 lt 0 15 lt 05 lt 0 3 37 5 A 150A lt 0 03 lt 0 07 lt 0 07 lt 0 07 lt 0 15 lt 0 1 lt 0 3 lt 0 2 150A 375A lt 0 02 lt 0 05 lt 0 05 lt 0 05 lt 0 1 lt 0 08 lt 0 2 lt 0 16 375A 900A lt 0 02 lt 0 04 lt 0 05 lt 0 04 lt 0 1 lt 0 06 lt 0 2 lt 0 12 900 A 1500A lt 0 02 lt 0 05 lt 0 05 lt 0 05 lt 0 1 lt 0 08 lt 0 2 lt 0 16 At 30 Hz 48 Hz and 66 Hz 440 Hz twofold the errors at 15 Hz 30 Hz and 440 Hz 5 kHz threefold the errors Calibration interval of 1 year is recommended Use LMG Z502 Z505 Z510 Z520 and LMG specifications to calculate the accuracy of the complete system 2 4 4 Connection of the precision current transformers with LMG Use LMG inputs I and I please refer to HINTS FOR WIRING CURRENT TRANSFORMERS OR HST TO LMG 4 590 www zes com 31 92 User Manual Sensors amp Accessories 2 5 Precision current transformer 4000A LMG Z542 Z545 Z550 K Hl P1 T 209 Oso 200 MaBe in mm dimensions in mm Bie he Figure 2 30 Dimensions in mm of LMG Z542 Z545 Z550 A 100mm 83mm 62 73 80
39. ensor name and serial number This data is read out of the sensor automaticaly Measuring ranges LMG600 with L60 Z60 Nommalrange7 A 5 10 20 80 150 300 600 1000 Max TRMS value 7A 55 11 22 44 88 165 330 660 1200 Max peak value A 14 28 56 112 224 469 938 1875 3000 Range peak value for accuracy calculation A 14 28 56 112 224 469 938 1875 3750 Accuracy Use L60 Z60 and LMG600 specifications to calculate the accuracy of the complete system Since the max peak value is limited by the LMG ranges and the current sensor please use range peak value for accuracy calculation to determine the LMG600 accuracy www zes com 45 92 User Manual Sensors amp Accessories 2 10 Error compensated AC current clamp 3000 A L60 Z66 Figure 2 46 L60 Z66 Figure 2 47 Dimensions of L60 Z66 46 92 www zes com 2 Current Sensors 2 10 1 Safety warnings e Always connect the sensor first to the meter and afterwards to the device under test N e The operation of the sensor with load current and without connection to the LMG will cause damage of the sensor and is dangerous for the user e Connecting cable without safety insulation Aviod contact to hazardous voltage e Use safety cover P Figure 2 48 47 for protection against short circuits during clamping e Please refer to chapter SAFETY RECOMMENDATIONS 1 25 36 Figure 2 48 Protection against
40. ent Arms 45 deg 10 6 Max current Arms 65 deg 10 1000 10000 100000 1000000 Max current Arms 85 deg 0 1 ui Te Frequency Figure 2 4 PCT200 temperature derating 1 01 1 2 3 4 5 6 7 8 9 10 Figure 2 5 PCT200 typical gain error vs frequency 1 000 000 Figure 2 6 PCT200 typical phase error vs frequency 2 1 3 Installation Grounding the transducer head is strictly recommended Even if there is no requirement for safety ground on the product for safety reasons the transducer head PCT200 is strictly recommended to be connected to earth ground If in case of damage in the installation a bare conductor connects the aluminium housing this will prevent the transducer head and the LMG connection cable to be energised Connect the earth wire to the transducer head PCT200 using a ring terminal and a toothed locked washer designed for the maximun short circuit current of the installation fastened to one of the 6 5mm mounting holes Grounding of the transducer head PCT200 is also recommended to lead away capacitive coupled distortion For LMG600 use the connection cable PCT200 K L6 and optionally the elongation cable LMG Z SV Ixx or LMG Z DV For other instruments use the supply unit PCTSIU4 together with the connection cable PCT DSUB between PCT200 and PCTSIU4 Also if bare conductors can be used up to the above values it is strictly recommended to u
41. ention cable is available at ZES LMG Z SVT or LMG Z DV in different lenths from 5m to 50m Interference from strong electromagnetical disturbed environments may affect the measurement accuracy This depends from the respective installation in the complete system and is out of responsibility of ZES www zes com 83 92 User Manual Sensors amp Accessories 3 17 Insulated 4mm connecting plug LMG SCP Figure 3 22 LMG SCP Insulated 4mm connecting plug made of brass Plugs with spring loaded Multilams and rigid insulating sleeves With insulated grip and with two in line 4mm rigid sockets accepting spring loaded 4mm plugs with rigid insulating sleeve Plug spacing 19 mm This plug can be used for the short circuit at zero adjustment for test measurements of common mode rejection and for the current connection on the patch panel of LMG MAS LMG MAK1 LMG MAK3 and BOB CEE3 32 3 17 1 Safety warnings e Please refer to chapter SAFETY RECOMMENDATIONS 1 25 3 17 2 Specifications Rated voltage 1000 V CAT II Rated current Plug spacing 84 92 www zes com A FAQ frequently asked questions Knowledge base 4 FAQ frequently asked questions Knowledge base 4 1 Avoid distortion when using external sensors in noisy environment External current sensors with voltage output connected to the precision power meter series LMG have usually an output voltage of a few mV to several V This sensors can be c
42. er cross section Rated current Table 3 5 Safety laboratory leads for general purpose 74 92 www zes com 3 Accessories 3 10 Safety jaw clip for current and voltage connection LMG Z301 Figure 3 14 LMG Z301 black 131 Figure 3 15 Dimensions of LMG Z301 Test clips for current and voltage connection with on the outside insulated steel jaws 3 10 1 Safety warnings e Please refer to chapter SAFETY RECOMMENDATIONS 1 25 3 10 2 Specifications Rated voltage 1000 V CAT III IGA 10 C 80 C Output connection safety socket 4mm Available are LMG Z301 red LMG Z301 black www zes com 75 92 User Manual Sensors amp Accessories 3 11 Shielded DSUB9 extention cable LMG Z DV Figure 3 16 Shielded DSUB9 extention cable This is a high quality very well shielded DSUB9 extention cable high immunity against EMC It is screwable with UNC4 40 threads at both connectors It can be used to extend the cable length of the PSU and PCT connection cables In this case it is used between the precision current sensor PSU60 200 400 600 700 1000 or PCT200 600 and the LMG specific connection cable to the LMG 3 11 1 Safety warnings e Attention No safety insulation working voltage max 50V when using Busbar without insulation or other not insulated items assure safety distance between the extention cable and hazardous voltages e Please refer to chapter SAFETY RECOMMENDATIONS
43. gainst can be measured as well as the current in the neutral IN It also allows measurement of the linked voltages The adaptor is standard equipped with a jumper in the neutral path which enables the current to flow The length of the supply cable is about 2m The Schuko jack Aux Supply can be used to supply the instrument and other equipment e g laptop computer For safety purpose this Schuko jack is equipped with a standard 16A circuit breaker If a load is measured the power consumption of the instrument is not taken into account as it is supplied before the measuring connectors If a generator is measured the instrument should be powered from a separate jack in order to avoid measuring errors 3 8 1 Safety warnings e Always connect the adaptor first to the meter and afterwards to the device under test e Attention Ensure in any case that the N neutral on the patch panel is connected from the input side to the output side Either via a current measurement path or with a short circuit on the patch panel An open N neutral can lead to dangerous voltage at the output and may destroy the connected load If you dont want to measure the current in L1 L2 or L3 the jacks Ix and Ix have to be short circuit to enable the current to flow e Please refer to chapter SAFETY RECOMMENDATIONS 1 25 3 8 2 Specifications Rated voltage 230 V 400 V CAT II 72 92 www zes com 3 Accessories 3 9 Safety laboratory lead
44. he complete system Since the max peak value is limited by the LMG ranges and the current sensor please use range peak value for accuracy calculation to determine the LMG600 accuracy 48 92 www zes com 2 Current Sensors 2 11 AC DC current clamp 1000 A L60 Z68 107 _ Figure 2 50 Dimensions of L60 Z68 HAB k 2 11 1 Safety warnings e Always connect the sensor first to the meter and afterwards to the device under test e The operation of the sensor with load current and without connection to the LMG will cause A damage of the sensor and is dangerous for the user e Connecting cable without safety insulation Aviod contact to hazardous voltage e Please refer to chapter SAFETY RECOMMENDATIONS 1 2 5 Figure 2 51 Protection against electric shock and short circuit www zes com 49 92 User Manual Sensors amp Accessories 2 11 2 Specifications Nominal input curve Max trms value Measuring range Maximum input overload Bandwidth Measurement category Degree of pollution Temperature range Weight Output connection 2m fixed lead with DSUB15 plug to LMG 2 11 3 Uncertainty The uncertainties are based on sinusoidal current ambient temperature 23 3 C calibration interval l year conductor in the middle of the clamp Zero offset adjusted to zero Current Amplitude error Phase error DC at 1 kHz
45. he product for safety reasons the transducer head PCT600 is strictly recommended to be connected to earth ground If in case of damage in the installation a bare conductor connects the aluminium housing this will prevent the transducer head and the LMG connection cable to be energised Connect the earth wire to the transducer head PCT600 using a ring terminal and a toothed locked washer designed for the maximun short circuit current of the installation fastened to one of the 6 5mm mounting holes Grounding of the transducer head PC T600 is also recommended to lead away capacitive coupled distortion For LMG600 use the connection cable PCT600 K L6 and optionally the elongation cable LMG Z SV Txx or LMG Z DV For other instruments use the supply unit PCTSIU4 together with the connection cable PCT DSUB between PCT600 and PCTSIU4 Also if bare conductors can be used up to the above values it is strictly recommended to use insulated conductors only By this is prevented that the housing of a transducer might short circuit two conductors Further more there are no problems when the secondary cable touches a primary conductor Use LMG connection cable and PCT together with the same serial number 20 92 www zes com 2 Current Sensors 2 2 4 Uncertainty The uncertainties are based on sinusoidal current ambient temperature 23 3 C calibration interval l year conductor in the middle of the transducer Frequency Amlitude
46. he rangenames of LMG500 the sensor name and calibration data are read out of the sensor EEPROM automaticaly Measuring ranges LMG500 with PCT200 5 qe os 25 150 100 200 1156 8 2 688 150 300 Accuracy Use PCT200 and LMG500 specifications to calculate the accuracy of the complete system Add 0 01 of measuring value Add 30 mA DC offset tolerance 16 92 www zes com 2 Current Sensors 2 1 12 Connection elongation To use the current sensor with a longer connection length between power meter and PCT connect a well shielded extention cable between the PCT DSUB plug and the PCT connection cable DSUB9m plug and screw both plugs together This extention cable is available at ZES LMG Z SVTxx or LMG Z DV in different lenths from 5m to 50m Interference from strong electromagnetical disturbed environments may affect the measurement accuracy This depends from the respective installation in the complete system and is out of responsibility of ZES www zes com 17 92 User Manual Sensors amp Accessories 2 2 Precision current transducer 600 A PCT600 Figure 2 10 PCT600 a 109 mm ot 30 mm m 12 5 mm 122 mm m 47mm Figure 2 11 PCT600 mechanical dimensions 18 92 www zes com 2 Current Sensors je Figure 2 12 PCT600 mounting bushings on the back maximum screw depth 6mm 2 2 1 Safety warnings e Always connect the sensor first to the meter and afterward
47. idth lowest frequency to measure DC maximum frequency to measure you knwo about the wave shape dc sin di dt to be followed exactly A us ripple Apkpk ripple frequency optionally please provide a graphic sketch which accuracy at which current value and frequency is aspired which type of connection is applicable clamp on feed through or terminal min L mm W mm or diameter mm any other mechanical requirements are there restrictions on the inserted RR impedance in the current path at which working voltage does the current nn SEE sensor operate working voltage against earth Urms CAT frequency nominal voltage between phases current measurement at low voltage return or at high voltage potential dU dt applied on primary which type of application will be measured you know the approximately power factor with wich type of power meter other instrument environmental conditions temperature range degree of pollution additional requirements comments 92 92 www zes com
48. ification plate If a voltage selector switch exists it must be set appropriately A suitable power source has to be used to operate the equipment instrument e Before connecting the mains cable to the power supply confirm that the mains supply voltage N contact This protection must not be disabled by the usage of plugs cables or extension cords without protective earth The mains plug must be inserted into the mains socket before any other connections are made to the equipment instrument Any kind of interruption of the protective earth inside or outside the equipment instrument or disconnecting the protective earth connector can result in an unsafe condition of the equipment instrument and is not allowed The usage of cables plugs sockets or adapters with only two poles prongs or connectors is not allowed e The mains plug may only be inserted into a mains power supply socket with protective earth The additional protective conductor terminal of the equipment instrument chassis must be used for the case where an earth current in excess of 10 A might result accidentally from the circuit under test Such currents are too large for the earthing connection of the equipment instrument s supply cord In case of a single fault the protective conductor might not be able to 7 carry this current If it would be interrupted the case would no longer be protected against electric shock In this case connect the additional prot
49. ional burden resistor has to be fitted This resistor can also be built up from a correctly dimensioned connection cabel from the sensor to the meter 4 6 1 Example current transformer 100 A 5 A rated burden 2 5 VA operation burden 50 connection cable 2m A 1 5mm copper p 0 0175 2mm input impedance of the power meter Rmeter 20 MQ rated burden of the CT is R 5 ae 100 md operation burden of the CT is Roperation 100 MO 50 50 md _ pxl _ 0 0175 Q mm 2m _ Reable A mal smmt T 29 3 M Raduni Koperditon Ta Reabie Puneter 50mQ 23 3mN 20mQ 6 7 MQ You can realize the correct burden with a longer connection cable RxeA _ Roperation Rmeter A 50 MQ 20 MQ m 1 5 mm Een FE ner 0 0175 Qemm 2 57m www zes com 91 92 User Manual Sensors amp Accessories 4 7 Support request If you need help finding the best suitable current sensors for your application please don t hesitate to contact ZES the engineers will help you Please fill out this form and send it to 49 6171 52086 or describe the following points in an email send to sales zes com Name Company Street City Phone fax email project name current range lowest current to measure Irms maximum current to measre Irms Ipk a overload not to be measured only withstand peak current and duration or rms current frequency and duration frequency range bandw
50. ized measurement circuits e When you put the equipment instrument out of operation all external cables shall be removed Special care has to be taken when disconnecting current sensors Before interrupting their secondary current the primary current has to be switched off After disconnecting the secondary side of the current sensors has to be short circuited to prevent dangerous voltages gt PEPE 1 3 General environmental conditions The general environmental conditions except limited or extended by a specific sensor are e Indoor use only e Altitude up to 2000 m e Temperature 5 C to 40 C e Maximum relative humidity 80 for temperatures up to 31 C decreasing linearly to 50 relative humidity at 40 C e Mains supply voltage fluctuations up to 10 of the nominal voltage e Transient overvoltages up to the levels of overvoltage category II i e to be supplied from a power outlet of the building wiring e Temporary overvoltages occurring on the mains supply e Pollution degree 2 i e only non conductive pollution occurs except that occasionally a temporary conductivity caused by condensation is expected www zes com 9 92 User Manual Sensors amp Accessories 1 4 Technical assistance For technical assistance you can contact the supplier of the equipment instrument or the manufacturer ZES ZIMMER Electronic Systems GmbH Tabaksm hlenweg 30 D 61440 Oberursel Germany Phone 49 0 6171 628750 Fax 49 0 6171 5
51. le 4 1 Copper cross section For the connection of the high voltage transducer HST output one does not have to care about the cross section Coaxial cable e g RG58 can be used too 4 5 2 Treatment of the ends of the wires Use gold plated stackable Amm plugs e g Multi Contact LS425 SE M B rklin 15F3107 together with insulating sleeve KT425 SE B rklin 15F310x Note the Amm plugs have to be stackable for easy LMG side short circuit of the secondary side of the current transformers The plated gold is important because of the contact resistance 90 92 www zes com A FAQ frequently asked questions Knowledge base 4 6 The burden resistor For measurements with the specified accuracies the burden of a sensor has to be between 50 and 100 of the rated burden in the data sheet at the rated frequency range This burden can be specified as ohmic resistor or as an apparent power value Here an example how you can convert the two values rated secondary current 5A rated burden 2 5 VA R 5 25 4 100 mf a ees ER Reable Radditional CT Rin eter Figure 4 8 burden calculation The burden resistor is built up from the ohmic load of the cables and additional from the burden of the meter The sensor will not work at the specified accuracy if the operation burden is not observed Because of the very low input impedance of the elektronic meter inputs the rated operation burden is mostly not reached and an addit
52. mbol indicates danger of injury or death from electric shock due to dangerous voltages Do not touch Use extreme caution AC voltages over 33V RMS 46 7 V peak and DC voltages over 70 V are deemed to be hazardous live according to IEC 61010 resp EN 61010 There is a danger of electric shock This can cause death or injury to body or health Furthermore there is a risk of material damages High temperature This symbol indicates a high temperature There is a burn and fire hazard There is a danger of fire or injury to body or health due to hot surfaces or material Furthermore there can be material damages to other objects due to contact or close proximity If a burn or fire does occur there can be further damages which can cause death or injury to body or health Caution This symbol indicates the risk of damages to persons or material Also if material damages occur there can be further damages which can cause death or injury to body or health This symbol on the equipment indicates that this user manual is to be consulted for instruction or further information provided in order for save operation Information This symbol indicates facts or information regarding the equipment which should be observed for easy and accurate operation Protective conductor terminal This symbol indicates the terminal for the protective conductor See also CONNECTION TO POWER SUPPLY AND PROTECTIVE CONDUCTOR 1 2 17 References links References to tables
53. n connecting the measurement circuit take special care not to connect the voltage wires to the current input of the equipment instrument When switching the measurement circuit on this would result in a short circuit which risks damage to the analyzer and to the user Such short circuits can be very dangerous as currents of several thousand amperes T might flow during the short circuit For the connection of the voltage measurement circuit to the equipment instrument use only cables with suitable fuses like those delivered together with the equipment instrument The fuses in the voltage measurement cables will interrupt the current flow in case 7 that these cables are accidentally inserted into the low ohmic current measurement jacks Therefore short circuiting of a high power source e g the output of an energy distribution transformer will not cause any hazard The yellow and black voltage cables have each an implemented fuse Before and after each measurement Check the fuse To replace this fuse remove the cable on both sides from all circuits to make it free of dangerous voltages Unscrew the fuse holder Replace the fuse only with following type 6 3x32 mm FF 500mA 1000 V AC DC 30kA breaking capacity Screw the fuse holder together again transformer massive damage could occur when mismatching cables short circuiting the measurement circuit or using the current jacks of the equipment instrument instead of the vol
54. n regard DSUB cable insulation or aviod contact e Please refer to chapter SAFETY RECOMMENDATIONS 1 25 3 16 2 Specifications and uncertainty For the specifications and uncertainty see the datasheet of the precision current transducer PSU and use the below given measuring ranges of LMG600 to calculate the accuracy of the complete system 3 16 3 Connection and supply of current sensors PSU with LMG600 Use PSU K L6 and L60 X ADSE supply via LMG600 PSU K L6 is a generic connection cable for PSU60 PSU200 PSU200HF PSU400 PSU700 and PSU1000HF with different current consumption therefore there is no sensor supply current monitoring by LMG600 Please regard that that the amount of supply current for all current sensors does not exceed the supply capability from the LMG See following table www zes com 81 92 User Manual Sensors amp Accessories supply capability for all current sensors of LMG670 supply current of PSU60 supply current of PSU200 200HF 400 supply current of PSU700 supply current of PSU1000HF Measuring ranges LMG600 with PSU60 Set Iscale to 600 Limited by PSU60 to Max TRMS value 60 A and Max peak value 60 A Nominal range A Max TRMS value A 3 3 Max peak value A 33 6 Measuring ranges LMG600 with PSU200 PSU200HF Set Iscale to 1000 Limited by PSU200 PSU200HF to Max TRMS value 200 A and Max peak value 200 A Romima range A s ooo Tso 150 00
55. nnector labeled PCT600 to the sensor e plug the connector labeled LMG600 to the adapter L60 X ADSE mounted on the LMG600 current channel e now switch on the power and make your measurements the power of the equipment under test should be switched on at least Measuring ranges LMG600 with PCT600 Komma range A 175 15 90 00 10725 Tao Tom Max TRMS value JA 825 165 33 66 132 2475 495 900 Max peak vale A 21 42 84 168 336 703 5 900 900 Range peak value for accuracy calculation A 21 42 84 168 336 703 5 1407 2812 5 Accuracy Use PCT600 and LMG600 specifications to calculate the accuracy of the complete system Since the max peak value is limited by the LMG ranges and the current sensor please use range peak value for accuracy calculation to determine the LMG600 accuracy 2 2 7 Connection of the sensor PCT600 with PCTSIU4 For the use of PCT600 with other instruments with current input and supply via PC TSIU4 Connect PCT600 with PCT DSUB to PCTSIU4 Secondary current output at PCTSIU4 via two 4mm connectors 2 2 8 Connection of the sensor PCT600 with SSU4 It is not recommended for new projects but the sensor supply unit SSU4 can be used with modification for PSU60 200 400 700 and PSU K3 K5 K10 and SSU4 K L31 and direct current inputs I and I 2 2 9 Connection of the sensor PCT600 with LMG95 Use PSU PCT K L95 supply via LMG95 no additional error terms
56. o I 1 12 and I3 Further on by using a 4 channel instrument you can measure the voltage between neutral and earth U4 against U4 as well as the current in the neutral I 4 to I 4 3 7 1 Safety warnings e Always connect the adaptor first to the meter and afterwards to the device under test e Attention Ensure in any case that the N neutral on the patch panel is connected from the input side to the output side Either via a current measurement path or with a short circuit on the patch panel An open N neutral can lead to dangerous voltage at the output and may destroy the connected load If you dont want to measure the current in L1 L2 or L3 the jacks Ix and Ix have to be short circuit to enable the current to flow e Please refer to chapter SAFETY RECOMMENDATIONS 1 25 3 7 2 Specifications Rated voltage 240V 415 V CAT II www zes com 71 92 User Manual Sensors amp Accessories 3 8 Adaptor for measurement at 32A 3 phase devices BOB CEE3 32 Figure 3 10 BOB CEE3 32 The BOB CEE3 32 is an adaptor designed for measuring up to 32A per phase in 3 phase systems It was developed for the instrument series LMG but third party instruments may be connected as well The BOB CEE3 32 allows measurement of the voltage of each of the three phases jacks L1 L2 and L3 against the neutral jacks and each of the three currents Il I2 and I3 By using a 4 channel instrument the voltage between neutral and earth N a
57. ode voltage potential it is advantageous to connect the low output of this current transformer with earth There is a double galvanic separation in the LMG and inside the current transformer itself So the secondary side has neither galvanic contact with the load current nor with earth the current channel is floating on an undefined potential The high frequency accuracy can be improved by draging down the floating voltage to about earth potential 60 92 www zes com 2 Current Sensors 2 16 5 Wiring schematics low current frequency source Figure 2 62 low current application For applications with lower currents use both inputs in series and set the LMG scale to 3 high current max 18A frequency source Figure 2 63 high current application For applications with higher currents use both inputs parallel and set the LMG scale to 6 www zes com 61 92 User Manual Sensors amp Accessories ar thmetic mean value frequency source Figure 2 64 arithmetic mean value application To determine the arithmetic mean value of two currents Imean aff set the LMG scale to 3 In high frequency lightning applications where a earth current worth mentioning is present the light density is proportional to the arithmetic mean value of the two currents Il and 12 difference of two currents starter electronic electronic ballast Figure 2 65 difference of two currents To determine the difference
58. ode voltage potential it might be advantageous to connect the yellow plug with earth There is a double galvanic separation inside the LMG and inside the current transformer itself and a capacitive coupling from the isolated primary lead to the current transformer So the secondary side has neither galvanic contact with the load current nor with earth the current channel is floating on an undefined potential Parasitic currents by capacitive coupling from the primary conductor to secondary transformer side that is totally floating may influence measuring accuracy These currents can be by passed to earth over the yellow plug that is connected inside to the secondary side transformer coils in that way that the fields of these currents are compensated as not to create further disturbance and interference The HF accuracy can be improved by draging down the floating voltage to about earth potential but this might also cause resonance so beware not to distort the measurement accuracy 56 92 www zes com 2 Current Sensors 2 15 Precision wideband current transformer 1000 A WCT1000 Figure 2 59 WCT1000 WCT1000 is an accessory for the precision power meters LMG with a high bandwidth The high frequency design provides best accuracy at high frequencies It also simplifies the measurement of output power in high frequency applications with floating potential The current transformer has 1 A current output for the direct connection to
59. of two currents lamp Isum Istarter Set the LMG scale to 6 The lamp current llamp is the difference of Isum and the current through the starter electronic during the operation 62 92 www zes com 3 Accessories 3 Accessories 3 1 PCT current sensor supply unit PCTSIU4 ZZS ZIMMER Figure 3 1 PCTSIU4 A 2U ZZS ZIMMER y i SER S 426 00 mm p S Y Figure 3 2 PCTSIU4 mechanical dimensions www zes com 63 92 A User Manual Sensors amp Accessories Figure 3 3 PCTSIU4 back side The sensor supply unit PCTSIU4 is intended to be used for powering up to four precision current transducers PCT200 PCT600 and PCT2000 3 1 1 Safety warnings e Do not power up the device before all cables are connected e Attention when using busbar without insulation regard DSUB cable insulation or aviod contact e Please refer to chapter SAFETY RECOMMENDATIONS 1 25 e Do not disassemble the unit e Make sure that the unit is properly connected to earth ground e Do not block the ventilation openings on the side panels e If the fan does not operate properly contact the manufacturer for repair e If the power green diode is not working when mains is applied disconnect power and contact the manufacturer for further instruction 3 1 2 Specifications Mains voltage 100 V 240 V Mains frequency 47 Hz 63 Hz Channels A x PCT200 or PCT600 or PCT2000 Output voltage E
60. onmental conditions see GENERAL ENVIRONMENTAL CONDITIONS 1 3 9 must be observed to ensure safe operation of the equipment Use in any type of wet or explosive environment or in presence of flammable gases or liquids is especially prohibited The equipment and accessories such as wires and clips must be checked before each use Defective parts must be replaced Ventilation openings must be kept clear see GENERAL ENVIRONMENTAL CONDITIONS 1 3 9 to guarantee the required air flow and to prevent overheating of the equipment In the same way the air filter at the air inlets must be clean to permit sufficient air flow Do not operate the equipment without air filter or the filter holder as injury may result Especially take care that the equipment is not placed above sheets of paper which could get sucked into the ventilation openings at the bottom of the equipment When mounting the equipment into a rack make sure that the slide rails do not cover any ventilation openings The equipment must not be used in a medical environment nor in any other environment that may have a potential effect on life or health Impacts or rough handling may damage the equipment Do not place heavy objects on the equipment If the weight of the equipment is too heavy to be carried by one person carry the equipment with two persons and or use an appropriate tool In all cases use the handles and grips of the equipment to lift and carry it safely
61. onnected to the LMG Isensor input and current measurements can be done with a high accuracy but a few points have to be kept in mind Also sensors with current output can have distortion problems Especially in EMC noisy environments with high dU dt voltages the following points should be considered to achieve best accuracy and low noise e Use well shielded coaxial cable to connect sensors with voltage output to the power meter LMG Sensors with current output should be connected with twisted measuring leads e Avoid ground loops do not connect the shield and or housing of the sensor at several different points to earth Take into concern that other instruments measuring the same secondary signal might have inputs without isolation to earth e g oscilloscopes Important is the star shaped grounding of the complete system e In the case of well shielded sensors e g Pearson transducers the shield housing should be connected to PE to allow the capacitiv coupled distortion to find a low impedance way to earth and do not couple to the measuring signal If so the low input I should not be connected to earth a Figure 4 1 Grounding of well shielded sensors e In applications with current measurement on high common mode voltage potential it is advantageous to connect the low output of a galvanic separated current transformer with earth There is a double galvanic separation in the LMG and inside the current transformer itself So the s
62. ors only By this is prevented that the housing of a transducer might short circuit two conductors Further more there are no problems when the secondary cable touches a primary conductor Do not power up the device before all cables are connected Connect a PCT DSUB cable between supply unit and the sensor Available cable lengths are 2m 5m and 10m Connect an instrument with low impedance current path on the secondary output 4mm red and black connectors When all connections are secured connect mains power When mains is applied a green light diode at the front next to symbol power will light green For each sensor connected a green light diode will light on the front if the connection is correct and the sensor is operating within normal range 2 3 4 Uncertainty The uncertainties are based on sinusoidal current ambient temperature 233 C calibration interval l year conductor in the middle of the transducer Frequency Amlitude uncertainty Phase uncertainty in of nominal input current rms DC 500 Hz 0 01 0 04 500 Hz 1 kHz 0 01 1 kHz 10 kHz 2 5 Temperature coefficient 0 1 ppm C of maximum input current peak in the temperature range of 40 C 65 C www zes com 27 92 User Manual Sensors amp Accessories 2 3 5 Sensor without supply or open secondary circuit Both AC and DC primary current can be applied up to 100 of nominal current under following conditions e
63. pment has been operated with supply voltage outside specifications there are loose parts inside the equipment long term storage has taken place in conditions outside the stated specifications for safe storage condensation is present or rough transport has occurred The intended use of this equipment within the limitations stated in the the technical data is to measure electrical current and or voltage When handling electricity and or an electrical apparatus be sure to observe all safety rules These rules include but are not limited to the following 6 92 Opening the equipment exposes components which are under high voltage This is only permitted to trained personnel User risks injury by removing cover and may void any manufacturer s warranty All voltage sources must be disconnected from the equipment before any equipment covers are removed Only suitably qualified personnel are permitted such access for the purpose of calibration service repair or changing of components If the equipment has been opened a high voltage test and a test of the protective conductor are necessary according EN 61010 following the closing of the equipment for safety purposes prior to use Fuses may only be replaced with the correctly rated and recommended types as written in this manual Reading the rated values from the fuse to be replaced is not permitted The use of repaired short circuited or insufficient fuses is not permitted The envir
64. ransducers to the power meter are described in this section Each cable connects all current transformer or all voltage transducer signals from a three phase system to a power meter The appropriate cable types must have individually twisted pairs TP and a shield made of copper netting For example the following types of cables have the matching properties 1 Lappkabel Unitronic LiYCY TP 2 Helukabel Paar Tronic CY 3 TKD Kabel PAARTRONIC CY LiYCY TP Use one twisted pair for one current transformer or voltage transducer Several three phase systems can be connected together in one cable The cable shields are connected only on one side to the ground terminal of the high voltage divider HST or the current transformer The LMG side cable shields should remain unconnected 4 5 1 Copper cross section For a proper load resistor of the current transformers use one of the following cross sections depending on the cable length But regard also that the cable is capable to withstand the rated short time thermal current of the current transformer a metric unit b American wire gauge Cable length Copper cross section Cable length American wire gauge 8m 12m 0 25 mm 7m 10m AWG 24 lim 17m 0 34 mm 10m 17m AWG 22 16m 25m 0 5 mm 16m 27m AWG 20 23m 383m 0 75mm 26m 42m AWG 18 32m 5lm 1 0mm 41m 67m AWG 16 48m 77m 1 5 mm 65m 107m AWG 14 78m 128m 2 5 mm 104m 170m AWG 12 Tab
65. rent rms 3000 A Maximum input current peak 3000 A Transformation ratio 1500 1 Rms voltage for AC isolation test 50 60 Hz l min between primary and secondary and shield between secondary and shield C Supply 15 V 0 75V 2 1A EN 613261 Max current Arms 25deg 45deg 65deg Figure 2 21 PCT2000 temperature derating of input current vs frequency and temperature 10 100 1000 10000 100000 Hz Figure 2 22 PCT2000 typical gain error vs frequency 26 92 www zes com 2 Current Sensors 1 0 5 0 10 100 1000 10000 100000 Hz Figure 2 23 PCT2000 typical phase error vs frequency 2 3 3 Installation Grounding the transducer head is strictly recommended Even if there is no requirement for safety eround on the product for safety reasons the transducer head PCT2000 is strictly recommended to be connected to earth ground If in case of damage in the installation a bare conductor connects the aluminium housing this will prevent the transducer head and the LMG connection cable to be energised Connect the earth wire to the transducer head PCT2000 using a ring terminal and a toothed locked washer designed for the maximun short circuit current of the installation fastened to one of the 6 5mm mounting holes Grounding of the transducer head PCT2000 is also recommended to lead away capacitive coupled distortion Also if bare conductors can be used up to the above values it is strictly recommended to use insulated conduct
66. s LMG Z307 Z308 Z309 Z310 Z311 Figure 3 11 Safety laboratory leads for current path Figure 3 12 Safety laboratory leads for voltage path Figure 3 13 Safety laboratory lead for general purpose Safety laboratory leads for voltage and current measurement The blue cable for general purpose can be used for example to short circuit the voltage channels at zero adjustment or for star delta wiring The yellow and black voltage cables have each an implemented fuse Before and after each measurement Check the fuse To replace this fuse remove the cable on both sides from all circuits to make it free of dangerous voltages Disassemble the fuse holder Replace the fuse only with the specified type Reassemble the fuse holder 3 9 1 Safety warnings e Please refer to chapter SAFETY RECOMMENDATIONS 1 25 www zes com 73 92 User Manual Sensors amp Accessories 3 9 2 Specifications sry oF violet LMG Z308I 1 5m LMG Z309I 3m LMG Z310I 6m LMG Z3111 10m Table 3 3 Safety laboratory leads for current path Black or yellow LMG Z308U 1 5m LMG Z309U 3m LMG Z310U 6m LMG Z311U 10m Measurement category 1000V CAT III Temperature range 10 C 70 C Copper eross section 6 3x32 mm FF 500 mA 1000 V AC DC 30kA breaking capability e g SIBA 7017240 0 5 Table 3 4 Safety laboratory leads for voltage path Tin Length LMG Z307NSB 0 25 m 1000V CAT TT 10 C 70 C Copp
67. s to the device under test e Attention when using busbar without insulation regard DSUB cable insulation or aviod contact e Please refer to chapter SAFETY RECOMMENDATIONS 1 25 2 2 2 Specifications Nominal input current rms 600 A Maximum input overload 4500 A 100 ms normal operation after overload ES 4500 A 10s Sensor shut down but not damaged Safety standard EN 61010 1 Rated isolation voltage rms reinforced isolation 500 V CAT II pollution degree 2 Rms voltage for AC isolation test 50 60 Hz 1 min between primary and secondary and shield between secondary and shield Impulse withstand voltage Creepage distance 10 Comparative Tracking Index CTI 600 Operating temperature 65 40 C 85 C input current rms lt 600 A 40 C 85 C 0 6kg Supply 15 V 0 75 V 700 mA EN 61326 www zes com 19 92 A User Manual Sensors amp Accessories 1000 Max current Arms 25 deg 100 Max current Arms 45 deg Max current Arms 65 deg Iprim ary rms 1080000 Max current Arms 85 deg Frequency Figure 2 13 PCT600 temperature derating 10 100 1 000 10 000 100 000 Hz Figure 2 14 PCT600 typical gain error 10 100 1 000 10 000 100 000 Hz 5 Figure 2 15 PCT600 typical phase error 2 2 3 Installation Grounding the transducer head is strictly recommended Even if there is no requirement for safety ground on t
68. se isolated conductors only By this is prevented that the housing of a transducer might short circuit two conductors Further more there are no problems when the secondary cable touches a primary conductor Use LMG connection cable and PCT together with the same serial number www zes com 13 92 User Manual Sensors amp Accessories 2 1 4 Uncertainty The uncertainties are based on sinusoidal current ambient temperature 23 3 C calibration interval l year conductor in the middle of the transducer Frequency Amlitude uncertainty Phase uncertainty in of nominal input current rms DO 5kHz 70 01 kHz 100 klz 100kHz 1 MHz 90 Temperature coefficient 0 1 ppm C of maximum input current peak in the temperature range of 40 C 85 C See specification of the LMG connection cable for the LMG measuring ranges and to calculate the accuracy of the complete system 2 1 5 Sensor without supply or open secondary circuit Both AC and DC primary current can be applied up to 100 of nominal current under following conditions e Sensor is unpowered and secondary circuit is open e Sensor is unpowered and secondary circuit is closed e Sensor is powered and secondary circuit is open e Sensor is powered and secondary circuit is interrupted during measurement Note that the sensor core will be magnetized in all four cases leading to a small change in output offset current less than 10 ppm 2 1 6 Connection of the
69. ss screw max 2 5 Nm Minimum center distance between adjacent bus 370mm Dar Output connection screw terminals M5 Philips recessed head screw max 4mm flexible 6mm solid tightening torque 3 5 Nm Rated Transformation ratio 5000 1 2 7 3 Uncertainty The uncertainties are based on sinusoidal current ambient temperature 5 C 40 C conductor in the middle of the transformer total burden impedance including wiring and current path of LMG between 1 and 2 5 Q center distance between adjacent bus bars gt 370 mm www zes com 39 92 User Manual Sensors amp Accessories 250 A 1000A lt 0 03 lt 0 07 1000A 2500A I lt 0 02 lt 0 05 2500A 6000A lt 0 02 lt 0 04 6000A 1OkA lt 0 02 lt 0 05 lt 0 1 lt 0 08 At 30 Hz 48 Hz and 66 Hz 440 Hz twofold the errors at 15 Hz 30 Hz and 440 Hz 5kHz threefold the errors Calibration interval of 1 year is recommended Use LMG Z582 Z590 and LMG specifications to calculate the accuracy of the complete system 2 7 4 Connection of the precision current transformers with LMG Use LMG inputs I and I please refer to HINTS FOR WIRING CURRENT TRANSFORMERS OR HST TO LMG 4 590 40 92 www zes com 2 Current Sensors 2 8 Active error compensated AC current clamp 40 A L60 Z406 insuisted conductor Figure 2 41 L60 Z2406 standard length 3m optional 1m 10m Figure 2 42 Dimensions of L60 Z406 2
70. stem 2 6 4 Connection of the precision current transformers with LMG Use LMG inputs I and I please refer to HINTS FOR WIRING CURRENT TRANSFORMERS OR HST TO LMG 4 590 www zes com 37 92 User Manual Sensors amp Accessories 2 7 Precision current transformer 10kA LMG Z582 Z590 Figure 2 37 LMG Z582 Z590 picture similar 370 90 14 5 370 M6 9mm deep Ma e in mm Dimensions in mm 200mm Figure 2 39 LMG Z582 Z590 suitable bus bars 38 92 www zes com 2 Current Sensors P1 K Perk S1 k S2 Figure 2 40 LMG Z582 Z590 connection diagram 2 7 1 Safety warnings e Always connect the sensor first to the meter and afterwards to the device under test e If no burden is connected secondary terminals have to be short circuited e Please refer to chapter SAFETY RECOMMENDATIONS 1 25 2 7 2 Specifications TOKA continous Secondary euent Bandwidth 15 Hz 5kHz 1 259 cos beta 1 Measurement category 600 V CAT IV 1000V CAT III EN 61010 1 Highest voltage for equipment Um 1 2kV EN 60664 1 Test voltage 6kV 50Hz 1 min Rated primary Current Ipyn 5000 A Rated secondary Current Isy 1A Rated Continuous Thermal Current Jz 10kA Rated Short Time Thermal Current Iin 80 x In 18 Instrument Security Factor FS lt 80 x In KETE Bus bar 4x 200 mm x 10mm primary fixing device M5 slotted headle
71. tage jacks and similar So it is recommended to use appropriate fuses in all measurement cables When selecting a fuse ensure that at least the following properties are met N e When connecting to high power measurement circuits e g the output of an energy distribution The usual measuring current must flow without interruption rated current of the fuse The short circuit current of the measurement circuit must be interrupted safely breaking capacity of the fuse The maximum voltage of the measurement circuit must be interrupted safely rated voltage of the fuse The fuse must be suitable for the type of current AC DC or both breaking capacity of the fuse The fuse must be fast enough to protect the cables and the equipment instrument e The maximum voltages between the voltage jacks may not exceed the technical specifications e The maximum currents at the current jacks may not exceed the technical specifications e The maximum voltages of the jacks against earth may not exceed the technical specifications 8 92 www zes com 1 Introduction e External current sensors or transformers must be connected to wires and jacks which have a ten times higher overload capability only If the cables or jacks are not sufficient they could be interrupted in case of overload For the same reason it is not allowed to use fuses in this current measurement wires Before using jacks test if they have a low impedanc
72. the artificial star point have to be considered They can be determined exactly The formula editor can be used to automatically calculate these losses and correct them 3 4 1 Safety warnings e Always connect the sensor first to the meter and afterwards to the device under test e Please refer to chapter SAFETY RECOMMENDATIONS 1 25 3 4 2 Connection to LMG The LMG Z AMP is connected to the LMG using the six cables of the LMG 8x black 3x yellow Connect each channel U with U and U with U At the L1 L2 L3 jack you can connect your voltage via the three delivered yellow measuring leads The three black sockets U1 U2 and U3 they represent the artificial mid point are interconnected 3 4 3 Specifications 500 V 600 V 65 8 kQ 0 01 220g 150mm 80mm 65mm 68 92 www zes com 3 Accessories 3 5 Adaptor for measurement at Schuko devices LMG MAS Figure 3 7 LMG MAS The MAS is a adaptor for measuring at single phase devices with Schuko inlet connector up to 16A It was developed for the instrument series LMG The supply is done by the fix mounted Schuko inlet The load is connected to the fixed mounted Schuko jack With the LMG MAS you can measure the voltage jacks U and U The current is also accessable from I to I This jacks have to be connected to the jacks of the measuring instrument The internal wiring is done so that the load is measured with correct current This wiring is perfect suited
73. the LMG current input For the connection of WCT1000 to the precision power meter LMG use narrow twisted laboratory leads not longer than needed 2 15 1 Safety warnings e Always connect the sensor first to the meter and afterwards to the device under test N e If no burden is connected secondary terminals have to be short circuited e Please refer to chapter SAFETY RECOMMENDATIONS 1 25 www zes com 57 92 User Manual Sensors amp Accessories 2 15 2 Specifications 1000 1200 A continuous 2000 A for 1 minute DE IMH Isolation bare primary conductor 30 Veff insulated primary conductor see cable spec Output connection safety sockets 4mm Output burden 100 mQ for specified accuracy 0 C 50 C Anm 33kg 160 mm 160mm 91mm 2 15 3 Uncertainty The uncertainties are based on no DC current component sinusoidal current ambient temperature 23 3 C calibration interval 1 year output burden max 100mQ max Im twisted laboratory leads conductor in the middle of the transducer Full power accuracy for measuring current up to 1000 A Accuracy and bandwidth specification is for small signal as well as for wide signal level 30 Hz 100 Hz 100 kHz 500 kHz 100 Hz 100 kHz 500 kHz 1 MHz Current of measuring value 0 25 0 25 Phase phase error in degree Use WCT1000 and LMG specifications to calculate the accuracy of the complete system 2 15 4 Shield socket The bl
74. uncertainty Phase uncertainty in of nominal input current rms DC 2kiz 0 01 2kHz 10 kHz 0 5 OKZ 100 KH Temperature coefficient 0 1 ppm C of maximum input current peak in the temperature range of 40 C 85 C See specification of the LMG connection cable for the LMG measuring ranges and to calculate the accuracy of the complete system 2 2 5 Sensor without supply or open secondary circuit Both AC and DC primary current can be applied up to 100 of nominal current under following conditions e Sensor is unpowered and secondary circuit is open e Sensor is unpowered and secondary circuit is closed e Sensor is powered and secondary circuit is open e Sensor is powered and secondary circuit is interrupted during measurement Note that the sensor core will be magnetized in all four cases leading to a small change in output offset current less than 10 ppm 2 2 6 Connection of the sensor PCT600 with LMG600 Use PCT600 K L6 and L60 X ADSE supply via LMG600 Figure 2 16 PCT600 K L6 and L60 X ADSE This cable PCT600 K L6 is used to connect the precision current transducer PCT600 to the power meter LMG600 In the connector to the LMG600 the adjustment data of the PCT600 head is available as well as measuring ranges sensor name and serial number This data is read out of the sensor automaticaly www zes com 21 92 User Manual Sensors amp Accessories Connection e switch all power off e plug the co
75. upply unit SSU4 can be used with modification for PSU60 200 400 700 and PSU K3 K5 K10 and SSU4 K L31 and direct current inputs I and I 2 1 9 Connection of the sensor PCT200 with LMG95 Use PSU PCT K L95 supply via LMG95 no additional error terms 2 1 10 Connection of the sensor PCT200 with LMG450 Use PCT200 K L45 and SSU4 standard version to SSU DSUBOF 236 Figure 2 8 PCT200 K L45 www zes com 15 92 User Manual Sensors amp Accessories This cable PCT200 K L45 is used to connect a precision current sensor PCT200 to the power meter LMG450 and to supply it by a sensor supply unit SSU4 In the connector to the LMG450 the adjustment data of the PCT200 head are available as well as the serial number The rangenames of LMG450 the sensor name and calibration data are read out of the sensor EEPROM automaticaly Measuring ranges LMG450 with PCT200 Accuracy Use PCT200 and LMG450 specifications to calculate the accuracy of the complete system Add 0 01 of measuring value Add 30 mA DC offset tolerance 2 1 11 Connection of the sensor PCT200 with LMG500 Use PCT200 K L50 and L50 Z14 supply via LMG500 Figure 2 9 PCT200 K L50 and L50 Z14 This cable PCT200 K L50 is used to connect a precision current sensor PCT200 to the power meter LMG500 and to supply it by a sensor supply unit SSU4 In the connector to the LMG500 the adjustment data of the PCT200 head are available as well as the serial number T
76. y leads not longer than needed 2 14 1 Safety warnings e Always connect the sensor first to the meter and afterwards to the device under test e If no burden is connected secondary terminals have to be short circuited A e Please refer to chapter SAFETY RECOMMENDATIONS 1 25 2 14 2 Specifications WA 5 ADK 00 20 A continuous 200 A for 1 minute 30H TME 0 100 mQ for specified accuracy 600 V CAT III 1000 V CATI EN 61010 1 Test voltage output low to 20mm busbar safety sockets 4mm 10 C 70 C mm Weight 350g Sizel w h 120mm 95mm 65mm www zes com 55 92 User Manual Sensors amp Accessories 2 14 3 Uncertainty The uncertainties are based on no DC current component sinusoidal current ambient temperature 23 3 C calibration interval 1 year output burden max 100m max 1m twisted laboratory leads conductor in the middle of the transducer Full power accuracy for measuring current up to 100 A Accuracy and bandwidth specification is for small signal as well as for wide signal level 30 Hz 100 Hz 100kHz 300 kHz 100Hz 100kHz 300 kHz 1 MHz Current of measuring value 0 25 0 25 Phase phase error in degree 06 03 04 08 Use WCT100 and LMG specifications to calculate the accuracy of the complete system 2 14 4 Improving the accuracy due to common mode effects In high frequency applications with current measurement on high common m

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