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Sensors & Accessories User Manual Sensors

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2. Supply 15 V 0 75 V EN 61326 12 80 WWW Zzes com 2 Current Sensors 1000 Free EE Max current Arms 25 deg 100 Uu E Max current Arms 45 deg 10 E amp Max current Arms 65 deg 10 1000 10000 100000 1000000 Max current Arms 85 deg 0 1 ma Frequency Figure 2 4 PCT200 temperature derating 1 01 1 2 3 4 5 6 7 8 9 L 10 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 5 mm mounting holes Grounding of the transducer head PCT200 is also recommended to lead away capacitive coupled distortion Use the connection cable PCT200 K L60 and optionally the elongation cable LMG Z SV Txx or LMG Z DV Also if bare conductors can be used up to the above values it is strictly recommended to use isolated cond
3. 2S ZIMMER Sensors amp Accessories for LMG Family User Manual Status July 18 2014 User Manual Sensors amp Accessories OCopyright 2014 ZES ZIMMER Electronic Systems GmbH ZES ZIMMER Inc Tabaksm hlenweg 30 D 61440 Oberursel Taunus FRG phone 4 49 0 6171 628750 phone 4 1 760 550 9371 fax 4 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 80 www zes com Contents Contents 1 Introduction Ll Dsedsymbo zu 3 2 4 ar nun E en 1 2 Safety recommendations 1 3 General environmental conditions 1 4 Technical assistance o o RE E EX x3 RO 2 DER 2 Current Sensors 2 1 Precision current transducer 200A PCT200 2 2 Precision current transducer 600A PCT600 2 3 Precision current transformer 1500 A LMG Z502 Z505 2510 Z520 2 2 2 4 Precision current transformer 4000 A LMG Z542 2545 Z550 lesen 2 5 Precision current transformer 10kA LMG Z562 Z570 lle 2 6 Precision current transformer 10kA LMG Z582 Z590 len 2 7 Error compensated AC current c
4. AN User Manual Sensors amp Accessories 3 6 Safety laboratory leads LMG Z308 Z309 Z310 Z311 Figure 3 6 Safety laboratory leads for current path Figure 3 7 Safety laboratory leads for voltage path Safety laboratory leads for voltage and current measurement 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 6 1 Safety warnings e Please refer to chapter SAFETY RECOMMENDATIONS 1 25 3 6 2 Specifications a Safety laboratory leads for current path b Safety laboratory leads for voltage path Black or yellow LMG Z308I 1 5 m Length LMG Z308U 1 5m LMG Z309I 3m LMG Z309U 3m LMG Z310I 6m LMG Z310U 6m LMG Z311I 10m LMG Z311U 10m Measurement category 1000 V CAT III 1000 V CAT III Temperature range 10 C 70 C Temperature range 10 C 70 C Copper cross section Copper cross section Rated current Fuse 6 3x32 mm FF 500 mA 1000 V AC DC 30 kA breaking capability e g SIBA 7017240 0 5 62 80 www zes com 3 Accessories 3 7 Safety Grip for current and voltage connection LMG Z301 Figure 3 8 LMG Z301 black Safety claw grip type CI 16 A 1000 V CAT III Test clips for current and vo
5. 08 14063 28 125 5625 1125 225 450 900_ Accuracy Use PCT600 and LMG500 specifications to calculate the accuracy of the complete system Add 0 01 96 of measuring value Add 100 mA DC offset tolerance 2 2 11 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 22 80 www zes com 2 Current Sensors 2 3 Precision current transformer 1500 A LMG Z502 Z505 Z510 Z520 Figure 2 19 LMG Z502 Z505 Z510 Z520 34mm 51mm Figure 2 21 LMG Z502 Z505 Z510 Z520 suitable bus bars www zes com 23 80 User Manual Sensors amp Accessories P1 K iade d between P1 K and S1 k marked with an arrow P2 L S1 k S2 Figure 2 22 LMG Z502 Z505 Z510 Z520 connection diagram his Busbar side is terminal P2 CN 2010 so deri 12 68 kV 750 A t 25 VA ee KI 0 02 ext 200 FS20 E r E ne E d i One screw for connection of current in 70 In 50 M Hz One ssi Sh ape
6. AC coupling The accuracies are only valid for this case 2 7 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 sensor name and serial number This data is read out of the sensor automaticaly Measuring ranges LMG600 with L60 Z60 Nommalrange7 A 5 10 20 40 80 150 300 600 1000 Max TRMS value A 5 5 11 22 44 88 165 330 660 1200 Max peak value A 14 28 56 112 224 469 938 1875 3000 38 80 www zes com 2 Current Sensors 2 8 Error compensated AC current clamp 3000 A L60 Z66 Figure 2 39 L60 Z66 Figure 2 40 Dimensions of L60 Z66 www zes com 39 80 A User Manual Sensors amp Accessories 2 8 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 isolation Aviod contact to hazardous voltage e Use safety cover P Figure 2 41 40 for protection against short circuits during clamping e Please refer to chapter SAFETY RECOMMENDATIONS 1 25 36 Figure 2 41 Protection against electric shock and short circuit 2 8 2 Specifications 10 4 50 1
7. L60 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 20 80 www zes com 2 Current Sensors Connection e switch all power off e plug the connector 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 CNomialrange 75 15 3060 120 225 450 600 Max TRMS value A 825 165 33 66 132 2175 495 900 Max peak value 21 42 84 168 336 7085 900 900_ Accuracy Use PCT600 and LMG600 specifications to calculate the accuracy of the complete system 2 2 Connection of the sensor PCT600 with SSUA Use sensor supply unit SSU4 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 8 Connection of the sensor PCT600 with LMG95 Use PSU PCT K L95 supply via LMG95 no additional error terms 2 2 9 Connection of the sensor PCT600 with LMG450 Use PCT600 K L45 and SSUA standard version Figure 2 17 PCT600 K L45 This cable PCT600 K L45 is used to connect a prec
8. Measuring ranges LMG600 with PSU200 PSU200HF Set Iscale to 1000 Limited by PSU200 PSU200HF to Max TRMS value 200 A and Max peak value 200A Nominal vee TA Ts oao IM e TIT Max TRMS value A 5 5 y GE Measuring ranges LMG600 with PSU400 Set Iscale to 2000 Limited by PSU400 to Max TRMS value 400A and Max peak value 400 A CNomalrange A 10 320 40 80 100 300 600 I Max TRMS vane 7A 11 22 4i 88 176 330 60 Max peak value 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 7A em 175 35 70 140 2025 925 Tao Tu Max TRMS value A 9 625 19 25 385 TT 14 28875 9775 1185 Max peak valve A 24 5 49 98 196 392 820 75 6415 3281 25 Measuring ranges LMG600 with PSU1000HF 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 BEDE TEWE 5 10 TH 780 a TE SELDE NN NG EES Ew M BE IE Max peak value A 14 28 56 112 224 469 938 1875 3750 3 12 4 Connection elongation To use the current sensor with
9. 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 extention 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 69 80 4 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 connected 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 housin
10. all current transformer or all voltage transducer signals from a three phase system to 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 4 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 c metric unit d American wire gauge Cable length Copper cross section Cable length American wire gauge 8m 12m 0 25 mm 7m 10m AWG 24 11m 17m 0 34mm 10m 17m AWG 22 16m 25m 0 5 mm 16m 27m AWG 20 23m 38m 0 75mm 26m 42m AWG 18 32m 51m 1 0mm 41m 67m AWG 16 48m 77m 1 5mm 65m 107m AWG 14 78m 128m 2 5mm 104m 170m AWG 12 Table 4 1 Copper cross section For the connection of the high voltage transducer HST
11. and to supply it by a sensor supply unit SSUA 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 www zes com 15 80 User Manual Sensors amp Accessories Measuring ranges LMG450 with PCT200 Accuracy Use PCT200 and LMG450 specifications to calculate the accuracy of the complete system Add 0 01 96 of measuring value Add 30 mA DC offset tolerance 2 1 10 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 SSUA In the connector to the LMG500 the adjustment data of the PCT200 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 PCT200 FNowmalrange 15 3 Jo 125 25 50 100 200 Max TRMS value A 15 3 6 125 25 50 100 200 Accuracy Use PCT200 and LMG500 specifications to calculate the accuracy of the complete system Add 0 01 96 of measuring value Add 30 mA DC offset tolerance 2 1 11 Connection elongation To use the current sensor with a longer connection length bet
12. ar ie hoi measuring device the other screw for short oon od gt measuring device the other screw for sho circuit of secondary winding if no measuring LI ZES ZIMMER een of an winding if no measuring devise connected m evise connecte 1 AB 1 20096 www zes com u CE ba p t xw A tei f v I LMG Z502 Both screws are terminal S1 his busbar side is terminal P1 Figure 2 23 topview of LMG Z502 7505 Z510 Z520 View fram side P1 View Tram side Ez Figure 2 24 orientation of LMG Z502 Z505 Z510 Z520 24 80 www zes com 2 Current Sensors 2 3 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 2 5 2 3 2 Specifications Rated Transformation ratio 150 1 1 2 50 cos beta 1 Measurement category 600 V CAT IV 1000 V CAT III EN 61010 1 Highest voltage for equipment Um 1 2 kV EN 60664 1 Test voltage 6 kV 50 Hz 1 min Rated primary Current Ipy 150A Rated secondary Current Isy 1A Rated Continuous Thermal Current Ja 1500 A Rated Short Time Thermal Current Ten 70 Ix 18 Instrument Security Factor FS lt 20 In Degree of pollution Operating temperature 5 C 40 C ELF Bus bar 1x 60mm x 10 mm or 2x 50mm x 10 mm or 1x 40 mm x 34 mm or round diameter 51mm
13. curent Arms 45 deg Iprim ary rms S Max curent Arms 65 deg 10 100 1000 10000 100000 1090000 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 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 the 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 5 mm mounting holes Grounding of the transducer head PCT600 is also recommended to lead away capacitive coupled distortion Use the connection cable PCT600 K L60 and optionally the elongation cable LMG Z SV Ixx or LMG Z DV Also if bare conductors can be used up to the above values it is strictly recommended to use isolated conductors only By this is prevented that the housing of a transducer might short circuit two conductors Further more there are
14. 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 PSUxx K L60 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 12 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 isolation regard DSUB cable isolation or aviod contact e Please refer to chapter SAFETY RECOMMENDATIONS 1 25 3 12 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 12 3 Connection of current sensors PSU with LMG600 Use PSUxx K L60 and L60 X ADSE supply via LMG600 Measuring ranges LMG600 with PSU60 Set Iscale to 600 Limited by PSU60 to Max TRMS value 60 A and Max peak value 60 A Nommalrange7 A 3 6 12 A m To Max TRMS vale 33 65 132 264 528 Max peak value A 84 168 33 6 67 2 134 1 QE 68 80 www zes com 3 Accessories
15. primary fixing device M4x40 slotted headless screw max 2Nm Minimum center distance between adjacent bus pars Output connection screw terminals M5 Philips recessed head screw max 4mm flexible 6 mm solid tightening torque 3 5 Nm 2 3 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 7135 mm Amplitude error of measuring value Phase error at 48 66 Hz Current Z502 Z505 Z510 2520 75A 375A lt 0 05 lt 0 1 lt 0 1 lt 0 1 lt 0 3 lt 0 15 0 5 lt 0 3 37 5A 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 900A 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 www zes com 25 80 Us
16. 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 impedance in the current path at which working voltage does the current Oo EEE 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 www zes com 77 80 Index A EES LI Se REED VS NG ad ED 57 Sl nk ab Le cid lite MERE 6 ee ERO ET 9 assistance COC WIC rae EENS DE Mee eset 10 C caution Seale NT TU PRU RE EER 5 condensatiOn ss se cece ce ce ren 9 conditions environmental ses cece es es ee ee 9 connection measurement CiTCUI ss ss se 8 power supply run 7 protective conductor ses ss ses T current Sensors ae Edd 11 D danger electric shock cc cee eee eee 5 high temperatures leu
17. 0 with LMG600 Use PCT200 K L60 and L60 X ADSE supply via LMG600 Figure 2 7 PCT200 K L60 and L60 X ADSE This cable PCT200 K L60 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 80 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 2 1 7 Connection of the sensor PCT200 with SSUA Use sensor supply unit SSU4 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 8 Connection of the sensor PCT200 with LMG95 Use PSU PCT K L95 supply via LMG95 no additional error terms 2 1 9 Connection of the sensor PCT200 with LMG450 Use PCT200 K L45 and SSUA standard version Figure 2 8 PCT200 K L45 This cable PCT200 K L45 is used to connect a precision current sensor PCT200 to the power meter LMG450
18. 88 kg 2m fixed lead with DSUB15 plug to LMG 2 8 3 Uncertainty The uncertainties are based on sinusoidal current ambient temperature 2343 C calibration interval year conductor in the middle of the clamp signal frequency 50 Hz 60 Hz 40 80 www zes com 2 Current Sensors Current Amlitude uncertainty Phase uncertainty in 96 of measuring value in 1A 100A 2 1 6 004 1000 EI 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 8 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 Romima rage A 115 30 60 120 240 450 900 1800 3000 Max TRMS value 7A 16 5 33 66 132 264 495 990 1980 3200 www zes com 41 80 User Manual Sensors amp Accessories 2 9 AC DC current clamp 1000A L60 Z68 Figure 2 42 L60 Z268 213 107 Figure 2 43 Dimensions of L60 Z68 2 9 1 Safety warnings e Alway
19. G IObox9 for DSUB9 3 9 1 Safety warnings e Please refer to chapter SAFETY RECOMMENDATIONS 1 25 www zes com 65 80 User Manual Sensors amp Accessories 3 10 IEEE488 bus cable LMG Z312 Z313 Z314 Figure 3 11 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 10 1 Safety warnings e Please refer to chapter SAFETY RECOMMENDATIONS 1 25 66 80 WWW zes com 3 Accessories 3 11 RS232 interface cable LMG Z317 Figure 3 12 RS232 interface cable RS232 interface cable DSUB 9 male to DSUB 9 female 1 1 connection length about 1 8m 3 11 1 Safety warnings e Please refer to chapter SAFETY RECOMMENDATIONS 1 25 WWW Zes com 67 80 User Manual Sensors amp Accessories 3 12 LMG600 connection cable for current sensors PSU PSUxx K L60 Figure 3 13 PSUxx K L60 shown together with L60 X ADSE and transducer head PSU The LMG600 connection cable PSUxx K L60 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 PSUxx K L60 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
20. able 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 80 OO p b b 25 USED SYMBOLS 1 15 gt PP PP 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 equipment 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 80 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 o
21. ables 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 epi Use only colored cables which match to the color of the jack to help prevent a wrong connection When 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 B
22. al current ambient temperature 23 3 C calibration interval 1 year output burden max 100 m max 1m twisted laboratory leads conductor in the middle of the transducer Full power accuracy for measuring current up to 100A Accuracy and bandwidth specification is for small signal as well as for wide signal level 30 Hz 100 Hz 100 kHz 500 kHz 100Hz 100kHz 500 kHz 1 MHz Current of measuring value 0 25 0 25 Phase phase error in degree Use LMG Z602 and LMG specifications to calculate the accuracy of the complete system 2 13 4 Shield socket The black 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 52 80 www zes com 2 Current Sensors 2 14 HF summing current transformer L95 Z06 Z06 HV R s ZIMMER Transformer rd systems F SuMMIng Current s N ce Figure 2 53 HF summing current transformer z s ZIMMER s lgiectronic System anstormer A instructions for safety See manua Figure 2 54 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 f
23. alculate the accuracy of the complete system 46 80 www zes com 2 Current Sensors 2 11 AC current clamp 3000 A 1A LMG Z329 Figure 2 49 Dimensions of LMG Z329 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 isolation Aviod contact to hazardous voltage e Use safety cover P Figure 2 50 48 for protection against short circuits during clamping e Please refer to chapter SAFETY RECOMMENDATIONS 1 25 WWW Zes com 47 80 User Manual Sensors amp Accessories 36 Figure 2 50 Protection against electric shock and short circuit 2 11 2 Specifications Nominal input current 3000 A 2 11 3 Uncertainty The uncertainties are based on sinusoidal current ambient temperature 2343 C calibration interval year conductor in the middle of the clamp signal frequency 50 Hz 60 Hz Current Amlitude uncertainty Phase uncertainty in 96 of measuring value in 1A 100A 2 1 6 004 1000 SE 1000 A 3000 A 0 5 Use LMG Z329 and LMG specifications to calculate the accuracy of the complete system 48 80 www zes com 2 Current Sensors 2 12 Precision wideband current transformer WCT100 LMG Z601 ges ZIMMER JEiectronle syste LM6 7601 wid
24. ations e The maximum voltages of the jacks against earth may not exceed the technical specifications 8 80 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 impedance 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 10 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 e AN 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 Differen
25. ctor in the middle of the transducer Full power accuracy for measuring current up to 100A Accuracy and bandwidth specification is for small signal as well as for wide signal level 30 Hz 100 Hz 100 kHz 300 kHz 100Hz 100kHz 300 kHz 1 MHz Current of measuring value 0 25 0 25 Phase i phas error in degree 06 03 04 08 Use LMG Z601 and LMG specifications to calculate the accuracy of the complete system 2 12 4 Improving the accuracy due to common mode effects In high frequency applications with current measurement on high common mode 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 volta
26. currents 4 3 Range extension by changing primary ratio at current sensors 4 4 Hints for wiring current transformers or HST to LMG 4 5 The burden resistor nme 4 6 Support request 2 2 42 RR kw DRR FA Roo EE eds Index WWW zes com 3 80 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 symbol indicates danger of injury or death from electric shock due to dangerous voltages Do not touch Use extreme caution AC voltages over 33 V 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 in
27. e 10 kVpk Input connection free highvoltage wire approx 0 8m Input connection safety sockets 4mm Weight 200g 3003 2 14 3 Uncertainty The uncertainties are based on sinusoidal current ambient temperature 2343 C calibration interval l year Frequency Amlitude uncertainty Phase uncertainty in 96 of measuring value S KHz 500 kHz 105 Use L95 Z06 L95 Z06 HV 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 mode 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 54 80 www zes com 2 Current Sensors 2 14 5 Wiring schematics low current frequency source Figure 2 55 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 56 high current application For applications with higher currents use both inputs parallel and set the LMG scale t
28. eband current Trans precision mali mtr ooi output lt D e ow of y truc I A See manual Figure 2 51 WCT100 LMG Z601 LMG Z601 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 LMG Z601 to the precision power meter LMG use narrow twisted laboratory leads not longer than needed 2 12 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 12 2 Specifications DE 5 ADK 00 20 A continuous 200 A for 1 minute OR TME 0 100 mQ for specified accuracy 600 V CAT III 1000 V CATI EN 61010 1 Test voltage output Ilow to 20mm busbar safety sockets 4mm 10 C 70 C mm Weight 350g Sizel w h 120mm 95 mm 65mm www zes com 49 80 User Manual Sensors amp Accessories 2 12 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 condu
29. efore 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 30 kA 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 voltage 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 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 specific
30. ensor 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 57 80 User Manual Sensors amp Accessories 3 2 Artificial mid point LMG Z AMP Figure 3 2 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 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 2 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 2 2 Connection to LMG The LMG Z AMP is connected to the LMG using the six cables of the LMG 3x 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 int
31. er Manual Sensors amp Accessories 2 3 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 4 475 26 80 www zes com 2 Current Sensors 2 4 Precision current transformer 4000 A LMG Z542 Z545 Z550 KeH1 P1 9 1 200 209 Ma e in mm dimensions in mm Figure 2 25 Dimensions in mm of LMG Z542 Z545 Z550 62 Fis 80 80mm Figure 2 26 LMG Z542 Z545 Z550 suitable bus bars www zes com 27 80 User Manual Sensors amp Accessories P1 K SN between P1 K and S1 k marked with an arrow P2 L S 1 k S2 l Figure 2 27 LMG Z542 Z545 Z550 connection diagram 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 e Please refer to chapter SAFETY RECOMMENDATIONS 1 25 2 4 2 Specifications 1 250 cos beta 1 Measurement category 600 V CAT IV 1000V CAT III EN 61010 1 Highest voltage for equipment Ui 1 2kV EN 60664 1 Test voltage 6 kV 50 Hz 1 min Rated primary Current py 2000 A Rated secondary Current Is 1A Rated Continuous Thermal Current Ja A000 A Rated Short Time Thermal Current Iyn 100 Iy 1s Instrument Sec
32. erconnected 3 2 3 Specifications 500 V 600 V 65 8 kQ 0 01 220 g 150mm 80mm 65mm 598 80 www zes com 3 Accessories 3 3 Adaptor for measurement at Schuko devices LMG MAS Figure 3 3 LMG MAS The MAS is a adaptor for measuring at single phase devices with Schuko inlet connector up to 164A 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 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 250V CAT III 3 3 1 Safety warnings e Always connect the sensor 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 www zes com 59 80 A User Manual Sensors amp Accessories 3 4 Adaptor for measureme
33. eries 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 to I 1 I2 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 5 1 Safety warnings e Always connect the sensor 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 orL3 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 www zes com 61 80
34. es 5 Sale AE EE EE OE EE ET Ie 5 degree Polit OER EER Ee n ais 9 E earth tern mals i dro US Semen ian gees 5 EIN 60664 Lasse 25 28 31 34 IOS CELERE ROTER 5 7 EN 61010 1 12 18 25 28 31 34 49 EN 6 1326 sn oes Sh Oo da ene oles 12 18 environmental conditions ss 9 F ARE EE ER ER Mew 71 H DERE GN vk OE DE RE DE GE dre dae ease 9 I TEE GO OLG xr ow information Wid 910 ana HR RR 5 Index L lii Cr 5 M mains supply voltage ss ss cee eee 9 measurement circuit CONHECO see EE EG DE GN b v 8 O overvoltage CALEB OLY eoe LERE EE ata aware AUR 9 Lent DOE OE y N od 56 ER DR Ge v ER GE DE GE 9 tEansIent uod N GE GEN a 9 P Polutiondestee se EE ED DE ee Rb ne 9 power supply GOT HEEL OS rer etel SEE 1 protective conductor connec oes er 1 protective conductor terminal 5 protective earth cee eens 5 R TELETCNICES EE ee ee ie ROA 5 S supply Iigins wollte s cip ahaa went cd vua OIE 9 SVM OLSEN Ge ES T 5 T technical assistance ESE cece eee 10 temperature EIE Gee ere eae 9 temporary overvoltage ss ss se ss eee 9 terminal protective conductor ss ses 5 transient overvoltage ccc cece eens 9 U used symbols V voltage 79 80 User Manual Sensors amp Accessories MANS Supply suse etn eth e aU Es 9 overvoltage category esses 9 CEPOL ES ook De ER E 9 Tans Db eterni asd Sotto Saee da 9 80 80 WWW zes com
35. f 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 environmental 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
36. g 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 se 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 secondary 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 71 80 72 80 User Manual Sensors amp Accessories current transducer LMG MH 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
37. ge to about earth potential but this might also cause resonance so beware not to distort the measurement accuracy 50 80 www zes com 2 Current Sensors 2 13 Precision wideband current transformer WCT1000 LMG Z602 Figure 2 52 WCT1000 LMG Z602 LMG Z602 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 LMG Z602 to the precision power meter LMG use narrow twisted laboratory leads not longer than needed 2 13 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 2 5 www zes com 51 80 User Manual Sensors amp Accessories 2 13 2 Specifications 1001 1200 A continuous 2000 A for 1 minute DH NEG Isolation bare primary conductor 30Veff 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 13 3 Uncertainty The uncertainties are based on no DC current component sinusoid
38. he measurement circuit e When connecting the instrument watch the order of connections First connect it to the standards for eduipment 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 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 identification 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 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 p
39. ision current sensor PCT600 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 www zes com 21 80 User Manual Sensors amp Accessories Measuring ranges LMG450 with PCT600 Romima range A I amp T 375 T5 150 300 600 Max TRMS value A 18 7 375 75 150 300 600_ Max peak value amp 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 96 of measuring value Add 100 mA DC offset tolerance 2 2 10 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 SSUA 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 Nominalrange A Tas 9 18 ors 75 150 300 Too Max TRMS value A 45 9 18 375 75 150 300 600_ Max peak value amp T
40. jury 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 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 suit
41. lamp 1000 A L60 260 lens 2 8 Error compensated AC current clamp 3000 A L60 266 leen 2 9 AC DC current clamp 1000 A L60 Z68 2 10 AC current clamp 1000 A 1A LMG Z322 2 11 AC current clamp 3000 A 1A LMG Z329 2 12 Precision wideband current transformer WCT100 LMG Z601 2 13 Precision wideband current transformer WCT1000 LMG Z602 2 14 HF summing current transformer L95 Z06 Z06 HV 3 Accessories 3 1 LMG600 current sensor adapter L60 X ADSE 3 2 Artificial mid point LMG Z AMP 3 3 Adaptor for measurement at Schuko devices LMG MAS 2 22222 3 4 Adaptor for measurement at IEC connector devices LMG MAKI 3 5 Adaptor for measurement at 16A 3phase devices LMG MAK3 3 6 Safety laboratory leads LMG Z308 2309 Z310 Z311 SE SE SE 3 7 Safety Grip for current and voltage connection LMG Z301 3 8 Shielded DSUB9 extention cable LMG Z DV 3 9 DSUB Adapter with screwed terminal connection LMG IObox 3 10 IEEE488 bus cable LMG Z312 Z313 Z314 3 11 RS232 interface cable LMG Z317 3 12 LMG600 connection cable for current sensors PSU PSUxx K L60 4 FAQ frequently asked questions Knowledge base 4 1 Avoid distortion when using external sensors in noisy environment 4 2 Avoid measuring errors due to shield
42. ltage connection with on the outside insulated steel jaws Available in red and black 3 7 1 Safety warnings e Please refer to chapter SAFETY RECOMMENDATIONS 1 25 www zes com 63 80 User Manual Sensors amp Accessories 3 8 Shielded DSUBO extention cable LMG Z DV DSUB9 m Figure 3 9 Shielded DSUB9 extention cable This is a high quality very well shielded DSUB9 extension 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 or PCT200 600 and the LMG specific connection cable to the LMG 3 8 1 Safety warnings e Attention No safety isolation working voltage max 50 V when using Busbar without isolation or other not insulated items assure safety distance between the extension cable and hazardous voltages e Please refer to chapter SAFETY RECOMMENDATIONS 1 25 3 8 2 Specifications No safety isolation working voltage max 50V DSUBO male DSUB9 female Cable length user selectable 3m 5m 10m or 15m 64 80 www zes com 3 Accessories 3 9 DSUB Adapter with screwed terminal connection LMG IObox Figure 3 10 LMG IObox picture similar Adapter from DSUB to screwed terminal connection for LMG process signal interface Available are e LMG IObox25 for DSUB25 e LMG IObox15 for DSUB15 e LM
43. 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 19 80 User Manual Sensors amp Accessories 2 2 4 Uncertainty The uncertainties are based on sinusoidal current ambient temperature 234 3 C calibration interval year conductor in the middle of the transducer Frequency Amlitude uncertainty Phase uncertainty in 96 of nominal input current rms DC IE 0 0170 2kHz 10 kHz 20 5 TO 100 kHz 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 L60 and L60 X ADSE supply via LMG600 Figure 2 16 PCT600 K L60 and L60 X ADSE This cable PCT600 K
44. nt at IEC connector devices LMG MAK1 Figure 3 4 LMG MAK1 The MAK1 is an adaptor for measuring at single phase devices with IEC inlet connector up to 10A It was developed for the instrument series LMG The supply is done by a IEC inlet cord which must be connected to the MAKI 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 The MAK1 is in compliance with IEC61010 1 and was constructed for voltages up to 300V CAT III 3 4 1 Safety warnings e Always connect the sensor 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 60 80 www zes com 3 Accessories 3 5 Adaptor for measurement at 16A 3phase devices LMG MAK3 EE PE max 300 520V CATIII 16A Aux Supply E Es ZIMMER Electronic Systems 5 CIME Figure 3 5 LMG MAK3 The MAK3 is an adaptor for measuring at 3 phase systems up to 16A per phase It is developed for the instrument s
45. o 6 www zes com 55 80 User Manual Sensors amp Accessories arithmetic mean value frequency source Figure 2 57 arithmetic mean value application To determine the arithmetic mean value of two currents Imean HE 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 I1 and I2 difference of two currents starter electronic electronic ballast Figure 2 58 difference of two currents To determine the difference of two currents lamp Isum Istarter Set the LMG scale to 6 The lamp current Jiamp is the difference of Isum and the current through the starter electronic during the operation 56 80 www zes com 3 Accessories 3 Accessories 3 1 LMG600 current sensor adapter L60 X ADSE Figure 3 1 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 s
46. oned connection cabel from the sensor to the meter 4 5 1 Example current transformer 100 A 5 A rated burden 2 5 VA operation burden 50 connection cable 2m A 1 5 mm copper p ODE input impedance of the power meter Rmeter 20 MQ rated burden of the CT is R A SAY 100 md operation burden of the CT is Roperation 100 MO x 50 50 MQ p l _ 0 0175 Q mm 2m _ Reable A mal mm T 29 3 M Ti dditiongl Mopendtion Reable Rieter 50mQ 23 3 MA 20 MO 6 7 MQ You can realize the correct burden with a longer connection cable m RxA 2 Roperation Rmeter A 50 mQ 20 mQ mx 1 5 mm gt rix Di ee 0 0175 Qemm 2 57 m 76 80 www zes com 4 FAQ frequently asked questions Knowledge base 4 6 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 otreet City Phone fax email project name current range lowest current to measure Irms maximum current to measre Irms Ipk overload not to be measured only withstand peak current and duration or rms current frequency and duration frequency range bandwidth lowest frequency to measure DC maximum frequency to measure you knwo about the
47. ons in mm Figure 2 30 LMG Z562 Z570 suitable bus bars 30 80 www zes com 2 Current Sensors P1 K aria S1 k S2 Figure 2 31 LMG Z562 Z570 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 TOER contimious Measurement category 600 V CAT IV 1000 V CAT III EN 61010 1 Highest voltage for equipment Um 1 2 kV EN 60664 1 Test voltage 6 kV 50 Hz 1 min Rated primary Current py Rated secondary Current Isy Rated Continuous Thermal Current Ja Rated Short Time Thermal Current Iin Instrument Security Factor FS 50 4070 Bus bar 3x 160mm x 10mm primary fixing device M5 slotted headless screw max 2 5 Nm Minimum center distance between adjacent bus 285 mm Dar Output connection screw terminals M5 Philips recessed head screw max 4mm flexible 6mm solid tightening 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 impedance including wiring and current path of LMG between 1 and 2 5 Q center distance bet
48. ories 2 10 AC current clamp 1000 A 1A LMG Z322 Figure 2 45 LMG Z322 es E Figure 2 46 Dimensions of LMG Z322 2 10 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 e Connecting cable without safety isolation Aviod contact to hazardous voltage 44 80 www zes com 2 Current Sensors e Please refer to chapter SAFETY RECOMMENDATIONS 1 25 Figure 2 47 Protection against electric shock 2 10 2 Specifications Nominal input current 1000 A Transformation ratio Measuring range 200 A Maximum input overload 1200 A continuous 2000 A for 5 min h 20 C Bandwidth 0 Hz 10 kHz Burden Measurement category 600 V CAT III Degree of pollution Temperature range 10 4 50 Weight 50g Output connection 2m fixed lead with 4mm safety plugs 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 linear interpolation is allowed Current Amlitude uncertainty Phase uncertainty in 96 of measuring value in TL 139 200 A 0 75 0 75 1000 A 055 www zes com 45 80 User Manual Sensors amp Accessories Use LMG Z322 and LMG specifications to c
49. ory iv CAT mov CAT III EN 61010 1 Highest voltage for equipment Ui 1 2kV EN 60664 1 Test voltage 6 kV 50 Hz 1 min Rated primary Current Ipy 5000 A Rated secondary Current Isy 1A Rated Continuous Thermal Current Ja 10kA Rated Short Time Thermal Current J 80 x In 18 Instrument Security Factor FS lt 80 x Iw Bus bar 4x 200 mm x 10 mm 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 7370 mm 34 80 www zes com 2 Current Sensors 250 A 1000 A 1000 A 2500 2500 A 6000 6000 A 10kA 0 1 0 08 At 30Hz 48 Hz and 66Hz 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 Z582 Z590 and LMG specifications to calculate the accuracy of the complete system 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 4 475 www
50. output one does not have to care about the cross section Coaxial cable e g RG58 can be used too 4 4 2 Treatment of the ends of the wires Use gold plated stackable 4mm plugs e g Multi Contact LS425 SE M B rklin 15F3107 together with insulating sleeve KT425 SE B rklin 15F310x Note the 4mm 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 www zes com 75 80 User Manual Sensors amp Accessories 4 5 The burden resistor For measurements with the specified accuracies the burden of a sensor has to be between 50 and 10076 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 25VA 100 MO AH Zr Reable F additional CT Fimeter Figure 4 7 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 additional burden resistor has to be fitted This resistor can also be built up from a correctly dimensi
51. rails do not cover any ventilation openings The equipment must not be used in 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 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 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 t
52. ransducer 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 5 avoid measuring errors due to shield currents WWW zes com 73 80 User Manual Sensors amp Accessories 4 3 Range extension by changing primary ratio at current sensors current source load ea mil LIE Figure 4 6 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 3 1 Example e precision power meter LMG670 e current sensor PCT200 e measuring ranges full range turn 2 5A 200A 10 turns 250mA 20A 74 80 www zes com 4 FAQ frequently asked questions Knowledge base 4 4 Hints for wiring current transformers or HST to LMG The appropriate cable types to connect the transducers to the power meter are described in this section Each cable connects
53. requency 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 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 14 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 53 90 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 14 2 Specifications ISA at Tor I or TDD ISA 3V set scale to 6 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 overvoltag
54. rotective 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 protective 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 80 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 c
55. s 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 isolation Aviod contact to hazardous voltage e Please refer to chapter SAFETY RECOMMENDATIONS 1 25 42 80 www zes com 2 Current Sensors Figure 2 44 Protection against electric shock and short circuit 2 9 2 Specifications 100 A 1500 Apk Weight 0 6 kg 2m fixed Tead with DSUBIS plug to LMG 2 9 3 Uncertainty The uncertainties are based on sinusoidal current ambient temperature 233 C calibration interval year conductor in the middle of the clamp Zero offset adjusted to zero Current Amplitude error Phase error DC at 1 kHz OOR 110A Use L60 Z68 and LMG specifications to calculate the accuracy of the complete system 2 9 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 CNomialrange 30 60 120 250 500 1000 Max TRMS value A 88 66 132 275 550 1100 www zes com 43 80 User Manual Sensors amp Access
56. s occurring on the mains supply e Pollution degree 2 ie only non conductive pollution occurs except that occasionally a temporary conductivity caused by condensation is expected www zes com 9 80 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 4 49 0 6171 628750 Fax 4 49 0 6171 52086 Email sales zes com URL http www zes com 10 80 www zes com 2 Current Sensors 2 Current Sensors 2 1 Precision current transducer 200A PCT200 Figure 2 1 PCT200 ad 109 mm eer 62 mm T m 12 5 mm 122 mm MM Figure 2 2 PCT200 mechanical dimensions 11 80 WWW zes com User Manual Sensors amp Accessories _MA H 32 6 mm o 325mm Figure 2 3 PCT200 mounting bushings on the back maximum screw depth 6 mm 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 isolation regard DSUB cable isolation or aviod contact e Please refer to chapter SAFETY RECOMMENDATIONS 1 25 2 1 2 Specifications Nominal input current rms 200 A EN 61010 500V CAT Ii Operating temperature 40 C 65 C 40 C 85 C Q input current rms lt 200A AUC 85 C 0 6kg
57. 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 _ DN fi f b Pu io E OE 9 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 5 kHz 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 4 FAQ frequently asked questions Knowledge base 4 2 Avoid measuring errors due to shield currents Figure 4 4 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 current and measured together in the current transducer The shield turned back through the t
58. t 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 energized 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 96 relative humidity at 40 C e Mains supply voltage fluctuations up to 410 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 overvoltage
59. uctors 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 80 User Manual Sensors amp Accessories 2 1 4 Uncertainty The uncertainties are based on sinusoidal current ambient temperature 234 3 C calibration interval year conductor in the middle of the transducer Frequency Amlitude uncertainty Phase uncertainty in 96 of nominal input current rms DC 5 kHz T0017 kHz 100kHz 100 kHz 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 sensor PCT20
60. urity Factor FS lt 40 In Degree of pollution Operating temperature 5 C 40 C Weight 3 3 kg Bus bar 2x 100mm x 10 mm or 3x 80mm x 10 mm or round diameter 83mm Minimum center distance between adjacent bus 185mm oars Output connection screw terminals M5 Philips recessed head screw max 4mm flexible 6mm solid j 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 between adjacent bus bars gt 185 mm 28 80 www zes com 2 Current Sensors 20 A 100 A lt 0 EO 2015 702 2032 100A 400A 100A 1000 A 1000 A 2400A 2400 4000A 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 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 4 475 www zes com 29 80 User Manual Sensors amp Accessories 2 5 Precision current transformer 10kA LMG Z562 Z570 Figure 2 28 LMG Z562 Z570 285 M6 9mm deep Ma e in mm Dimensi
61. ween adjacent bus bars 7285 mm www zes com 31 80 User Manual Sensors amp Accessories 250A 1000A lt 0 03 lt 0 07 1000 A 2500A 0 02 0 05 2500 A 6000 A 0 02 lt 0 04 6000A 10kA 0 02 lt 0 05 0 1 0 08 At 30Hz 48 Hz and 66Hz 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 Z562 Z570 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 4 475 32 80 www zes com 2 Current Sensors 2 6 Precision current transformer 10kA LMG Z582 Z590 Figure 2 32 LMG Z582 Z590 picture similar 370 90 14 5 370 9mm deep Ma e in mm Dimensions in mm 200mm Figure 2 34 LM G Z582 Z590 suitable bus bars www zes com 33 80 A User Manual Sensors amp Accessories P1 K P2 L S1 k S2 l Figure 2 35 LMG Z582 Z590 connection diagram 2 6 1 Safety warnings e Always connect the sensor first to the meter and afterwards to the device under test e f 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 categ
62. ween 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 16 80 www zes com 2 Current Sensors 2 2 Precision current transducer 600A PCT600 Figure 2 10 PCT600 EEE 109 mm MM Figure 2 11 PCT600 mechanical dimensions www zes com 17 80 User Manual Sensors amp Accessories _MA H 32 6 mm o 325mm Figure 2 12 PCT600 mounting bushings on the back maximum screw depth 6 mm 2 2 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 isolation regard DSUB cable isolation or aviod contact e Please refer to chapter SAFETY RECOMMENDATIONS 1 25 2 2 2 Specifications Nominal input current rms 600 A EN 6101 1 500V CAT Ii Operating temperature 40 C 65 C 40 C 85 C Q input current rms lt 600 A AUC 85 C 0 6kg Supply 15 V 0 75 V EN 61326 18 80 www zes com 2 Current Sensors 1000 Max curent Arms 25 deg 100 Max
63. zes com 35 80 User Manual Sensors amp Accessories 2 7 Error compensated AC current clamp 1000A L60 Z60 Figure 2 36 L60 Z60 il E Figure 2 37 Dimensions of L60 Z60 2 7 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 e Connecting cable without safety isolation Aviod contact to hazardous voltage 36 80 www zes com 2 Current Sensors e Please refer to chapter SAFETY RECOMMENDATIONS 1 25 Figure 2 38 Protection against electric shock 2 7 2 Specifications Nominal input current 1000 A Degree of pollution fe S 2 1 3 Uncertainty The uncertainties are based on sinusoidal current ambient temperature 23 3 C calibration interval year conductor in the middle of the clamp signal frequency 50 Hz 60 Hz linear interpolation is allowed Current Amlitude uncertainty Phase uncertainty in 96 of measuring value in 1137 TEX 200 A 0 75 96 0 79 1000 A 055 Use L60 Z60 and LMG specifications to calculate the accuracy of the complete system www zes com 37 80 User Manual Sensors amp Accessories 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

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