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1. Perera LG a8 Wea Rieke Piesisien Power Wales TE Sees RET les Se Soe j p 2 See CPP IO E E 8 S686 oo maa E ETA a fm J sii cam meee 00000000000 pe SSA Erna Suaply E sHTEOnTEONEE ae O Ce Ee gt amp Oo Figure 34 SSU4 mounted under LMG450 Dimensions W D H 320mm 306 7mm 224 6mm with feets 176 9 without feets ZES ZIMMER 60 96 Sensors and Accessories for precision power meters Accessories 6 1 5 SSU4 connector cables 6 1 5 1 Cable to connect measuring signal plugs of SSU4 with LMG310 current inputs SSU4 K L31 Cable to connect up to four PSU600 to the current input channels of 1 LMG310 1 LMG310 and 1 LMG95 1 LMG450 but better using PSU600 K L45 2 LMG310 in Aron wiring or any other amperemeter 6 1 5 2 Connection cable PSU600 to SSU4 PSU600 K3 K5 K10 PSU600 DSUB9F Figure 36 PSU600 K3 to connect the PSU600 to the SSU4 length 3m Connection cable from SSU4 to PSU600 length 3m 5m or 10m ZES ZIMMER 61 96 Sensors and Accessories for precision power meters Accessories 6 1 6 Modification option of SSU4 available for the use of PCT200 PCT600 PSU60 PSU200 PSU400 and PSU700 together with SSU4 K L31 The modification is needed only for th
2. ZES ZIMMER 49 96 Sensors and Accessories for precision power meters LMG95 connection cables and adapter 3 2 3 LMG95 ranges direct current input with PCT200 Iscale 500 max trms value 150A 300A limited by PCT200 to max 300Apk 3 2 4 LMG95 ranges direct current input with PCT600 Iscale 1500 limited by PCT600 to max 900Apk 3 2 5 LMG95 ranges direct current input with PSU200 Iscale 1000 limited by PSU200 to max 200Apk 3 2 6 LMG95 ranges direct current input with PSU400 Iscale 2000 limited by PSU400 to max 400Apk 3 2 7 LMG95 ranges direct current input with PSU700 Iscale 1750 ZES ZIMMER 50 96 Sensors and Accessories for precision power meters LMG95 connection cables and adapter 820 75A 1641 5A limited by PSU700 to max 700Apk 3 2 8 Accuracy Use PSU PCT and LMG95 specifications to calculate the accuracy of the complete system 3 2 9 Sensor operation without supply It is important to assure a stable power supply of the sensor before switching on the load current The operation of the sensor with load current and without supply will cause damage of the sensor and or of the LMG supply unit To remove the LMG supply unit from the test location without removing the sensors from the current path disconnect the DSUB9 plug and the savety laboratory plugs from the LMG and connect all of the 9pins together with ground shield of the plug and together with the hot wired sav
3. 3000V 60Hz LMG500 Uscale 1000 LMGS500 Urange 3V 6Vpk 3000V 6000Vpk LMG500 U measuring accuracy 0 01 of measuring value 0 02 of measuring range e Current measurement leff 10A 60Hz LMGS500 Irange 10A 30Apk direct current input LMGS500 I measuring accuracy 0 01 of measuring value 0 02 of measuring range e Power measurement PF 0 3 pure sinewave voltage and current gt phi acos PF f 60Hz S UVeff leff 30kV A P Ueff lIeff PF 9kW LMG500 Prange Urange Irange 6000V 30A 180kW LMG500 P measuring accuracy 0 015 of measuring value 0 01 of measuring range Tolerance of voltage and power measurement AU_LMG500 0 01 100 3000V 0 02 100 6000V 0 3V 1 2V 1 5V AU_HST3 3000V 0 05 100 1 5V AU_total AU LMG500 AU HST3 3V AP_LMG500 0 015 100 P 0 01 100 Prange 1 35W 18W 19 35W with P U I cos phi AP_HST3 IdP dU AU_HST3I IdP dI AI_HST3 IdP dphi Aphi_HST3I with AI_HST3 0 current measurement has no influence on voltage measurement AP_HST3 II cos phi AU_HST3I U I sin phi Aphi_HST3I AP_HST3 10A 0 3 1 5V 3000 10 sin acos 0 3 0 001047197551 34 47W AP_total AP_LMG500 AP_HST3 53 82W ZES ZIMMER 96 96 Sensors and Accessories for precision power meters
4. AP clamp 0 03996kW 0 81317kW 0 85313kW The relative error of the active power is _ AP AP 0 0525 5 25 relative 8 1 1 Improving the accuracy If you use a current clamp like in this example with a nominal current of 1000A and your current is only 10 what means 100A a simple trick to increase the accuracy is to wind the conductor several times through the clamp In the example the accuracy of the clamp changes with three windings to 0 75 because of the primary current of 300A the phase shift is 0 75 The next example of calculation is done for three windings Utms 230 000V range 250V gt range peak value 400V Testis Scaling 333 333 what means all current values are divided by 3 even the errors The ratio of the clamp stays at 1000 1 Values 300 000A primary gt 0 3A secondary range 300mA gt range peak value 0 938A calculated back to the primary side range 100A gt range peak value 312 7A f 50Hz Q 45 P 16 2635kW range 25kW gt range peak value 125 080kW AU 0 01 of Rdg 0 02 of Rng 0 023V 0 08V 0 103V AI cos 0 01 of Rdg 0 02 of Rng 0 01A 0 06254A 0 07254A AP css 0 015 of Rdg 0 02 of Rng 0 00244kW 0 02502kW 0 027456kW ZES ZIMMER 93 96 Sensors and Accessories for precision power meters FAQ frequently asked questions Knowledge base Al samp 9 75 of primary current in this case the reading
5. 2 25A now with the clamp scaling this error is divided by 3 as well what means AL 0 75 of Rdg 0 75A clamp Al pa Al FAT jmp 0 82254A total LMG95 clamp Again the total differential has to be used but now with the following values AU 0 AI Al tamp Ox Agso O R siad 360 With this the error of the clamp of the active power is AP np 100A cos 0 0V 230V cos 2 0 75A 4l 230V 100A sin 0 013 333 40W AP a AP gos AP lay 0 027456KW 0 33340KW 0 360856KW The relative error of the active power is Hius 0 0222 2 22 relative With this simple trick the error of the current amplitude could be reduced by 51 2 The error of the active power even by 42 3 ZES ZIMMER 94 96 Sensors and Accessories for precision power meters FAQ frequently asked questions Knowledge base 8 2 Example of an error calculation LMG500 with external shunt Particularly with regard to the standby power measurements compliant to EN62301 and ENERGY STAR it might be profitable and necessary to use an external shunt to increase the current dynamic and accuracy at low currents This example shows how to calculate the measuring tolerance of the complete system consisting of LMG500 and the external shunt LMG SH100 e External shunt LMG SH100 100ohms 0 15 e Voltage measurement Ueff 230V LMGS500 Urange 250V 400Vpk range spec see documentation of LMG500 in 115V suppl
6. 2 9 2 Specifications and accuracies Accuracies based on sinusoidal current ambient temperature 23 3 C calibration interval 1 year conductor in the middle of the hall sensor Accuracies in of measurable TRMS value at DC 1OOHz Use HALLxx and LMG specifications to calculate the accuracy of the complete system The transformers are only allowed to operate with cables which according to the printing on the cable are designed for this individual transformer 2 9 3 Sensor operation without supply It is important to assure a stable power supply of the sensor before switching on the load current The operation of the sensor with load current and without supply will cause damage of the sensor and or of the LMG supply unit To remove the LMG supply unit from the test location without removing the sensors from the current path disconnect the HD15 plug from the LMG and connect all of the 15pins together with ground shield of the plug To do this the load current has to be switched off 2 9 4 Connection of the sensor with LMG90 310 The use with LMG90 and LMG310 is not possible ZES ZIMMER 31 96 Sensors and Accessories for precision power meters Current sensors 2 9 5 Connection of the sensor with LMG95 Use L95 Z07 internal supply via LMG and the Isensor external shunt input Set LMG current scaling factor appropriate to the scaling factor marked on the label on L95 Z07 2 9 6 Connection of the sensor with LMG450 Th
7. 3000 1 4000 measuring tolerance of ratio tolerance of phase accuracy DC max 0 1 0 05Hz 45Hz max 0 1 45Hz 65Hz max 0 05 65Hz 2 5kHz max 0 1 2 5kHz 10kHz max 0 2 10kHz 100kHz max 0 3 100kHz 300kHz typ 2 conditions for input voltage from 3 to 100 of maximum trms input voltage accuracy output burden min 1kQ max InF specifications except min 1kQ Il max 100pF at 100kHz 300kHz Overvoltage maximum trms 4 2kV 8 4kV 12 6kV 16 8kV of highvoltage input maximum periodic 5kV 10kV 15kV 20kV voltages in maximum 3 8kV 6 8kV 8 8kV 10 2kV accordance to transient EN61010 2010 overvoltage valid for max non repetitive altitude 2000m over maximum peak sea level voltage Mechanical measurement one fixed high voltage lead length 2m for each channel input earth jack as the common reference point one BNC socket for each channel robust aluminium case size L x W x H 330mm x 230mm x 110mm 400mm x 230mm x 110mm installation 490mm x 230mm x 110mm 590mm x 230mm x 110mm dimension L x W x H approx 6 1kg approx 7 2kg 5 40 C indoor use only class I device must be earthed additionally to PE of mains supply cord mains supply 85 265V 45 65Hz approx 20VA ZES ZIMMER 84 96 Sensors and Accessories for precision power meters Voltage sensors 7 1 5 Measurement principle HST Out Out2 Out1 Out2 Out3 Figure 51 principle structur
8. 500 1k 2kA L50 Z29 HALLXxX 000068 30 2 10 Rogowski flex sensors L45 Z32 FLEXXX ceeccccceesseceeesteeeesteeeeeeanees 33 2 11 Low current shunt LMG SHXX a dicwkatiantadasekel aha iccbiedds 36 2 12 Low current shunt with overload protection LMG SHxx P 41 3 LMG95 connection cables and adapter cccceeesceceseeteeeeesteeeees 47 3 1 Adapter for the use of HD15 Sensors with LMG95 L95 Z07 47 3 2 PSU PCET K LOS u na a On ee E EA 49 4 LMG450 connection cables and adapter ccccceesseceeeenteeeeeenees 52 4 1 BNC adapter to sensor input HD15 without EEPROM L45 Z09 52 4 2 Adapter for isolated custom current sensors with 1A output L45 Z22 53 5 LMG500 connection cables and adapter cccceeesseceeetnteeeeeenees 55 5 1 LMG500 current sensor adapter L50 Z14 ssssssssssssessseressssresseressserssees 55 O ACCESSONES thes a E a tet A le E EEE Ee 57 6 1 Sensor supply unit for up to 4 current sensors SSU sesesseesseeseesseesss 57 6 2 Adapter for incremental rotation speed encoders L45 Z18 0 63 6 3 Adapter for incremental rotation speed encoders L50 Z18 08 67 6 4 Synchronisation adapter with adjustable lowpass filter L50 Z19 71 6 5 Ethernet Adapter L95 Z318 L45 Z318 L50 Z318 LMG Z318 73 6 6 USB RS232 Adapter CEIMGEZ 3 10 isch stesncvacsiussvovcrncssinvatsecestncvacs cousuncsads 79 T VOMASe SCNSOIS 25 c G cs palace
9. 96 Sensors and Accessories for precision power meters Current sensors 2 1 6 Connection of the sensor with LMG90 310 The use with LMG90 and LMG310 is not possible 2 1 7 Connection of the sensor with LMG95 Use L95 Z07 internal supply via LMG and the Isensor external shunt input Set LMG current scaling factor appropriate to the scaling factor marked on the label on L95 Z07 2 1 8 Connection of the sensor with LMG450 Use the sensor input you get the following ranges 2 1 9 Connection of the sensor with LMG500 Use L50 Z14 you get the following ranges ZES ZIMMER 11 96 Sensors and Accessories for precision power meters Current sensors 2 2 AC current clamp 200A 0 2A LMG Z326 ee ER A Figure 4 Dimensions of the LMG Z326 2 2 1 Z Safety warning No safety isolation measurements only at insulated conductors allowed Always connect the sensor first to the meter and afterwards to the device under test Please refer to chapter 1 1 Safety precautions 2 2 2 Specifications bare conductor phase ground 30Veff insulated conductor see cable spec ZES ZIMMER 12 96 Sensors and Accessories for precision power meters Current sensors 2 safety sockets for 4mm plugs 2 2 3 Accuracy Accuracies based on sinusoidal current ambient temperature 23 3 C calibration interval 1 year conductor in the middle of the clamp signal frequency 50 60 Hz Use LMG
10. Option HST O1 1 supply connection via IEC320 connector Supply connection mating to commonly used IEC 320 C13 appliance connectors supply cord of HST Figure 57 HST O1 1 7 1 11 Option HST O1 2 supply connection via NEMA 5 15P connector Supply connection mating to NEMA 5 15 sockets commonly used in USA Figure 58 HST O1 2 7 1 12 External high voltage high breaking capacity fuses Although HV fuse links are not able to protect the HST in the case of an internal fault they should be installed In the case of a fault the HST shall be disconnected from the supply as fast as possible in order to limit the fault effects This is why HV fuse links of lowest possible rated currents are recommended Possible suppliers of this fuses are ZES ZIMMER 88 96 Sensors and Accessories for precision power meters Voltage sensors e SIBA www siba com Indoor and outdoor voltage Transformer fuses HHD BVT Voltage transformer fuses HHZ BVT e ABB www abb com Indoor voltage transformer fuses WBP Outdoor voltage transformer fuses BRT Fuse selection criterias Ambient conditions Rated voltage 6kV for HST3 and HST6 Rated voltage 12kV for HST9 and HST12 Rated current 0 6A to 1A ZES ZIMMER can not guarantee that the fuses of above mentioned suppliers are suitable for every purpose and application It is the responsibility of the user to find and install a fuse appropriate to the application 7 1 13 External surge arreste
11. electric shock disconnect power supply before removing cover C ih Instrumen To PSU Figure 33 Dimensions of the SSU4 In the Figure 33 you see the desktop instrument also attended the angles for rack mounting 6 1 3 Connectors 6 1 3 1 9 Pin SUB D connectors for the sensors Via the following connector the sensors e g PSU600 L45 Z29 xxxx are connected to the SSU4 sensor supply unit For each channel there is one connector nr Lo 0000 Connector to the sensors ZES ZIMMER 58 96 Sensors and Accessories for precision power meters Accessories 5 SV mex S00mA SSCS 6 Curent ouput signal ofthe sensor max SOMA Not used Do not connect Signal input to indicate a proper operation of the sensor 15V or n c The red LED is on GND The green LED is on 9 15 V max 500mA The current output signal of the sensor is connected via a 2 7Q resistor to the corresponding channel of the 15 pin connector for the instrument When the current returns from the instrument it is fed into ground 6 1 3 2 15 Pin SUB D connectors for the measuring instrument Via the following connector the measuring instrument can be connected to the sensor supply unit 11 10 15 14 13 12 9 Connector to the instrument Current output channel 1 Current output channel 2 Current output channel 3 Current output channel 4 The outp
12. is available at the buffered low impedance BNC output To avoid noise interference it is recommended to use shielded cables to the measuring input of the LMG The HST can be delivered in one two or three channel version as to match the particular measuring task The single phase HST is used in single ended systems e g lighting plasma generation induction heating ultrasonic applications Line to line voltages can be measured as difference between the output signals of the channels For floating difference voltage measuring therewith the 2 phase HST is best suitable The HST has been designed for measurements at gas discharge lamps to measure the high frequency burning voltage and the ignition voltage with high precision These characteristics enable the use of the HST at frequency inverters with voltage peaks above 1000V These applications have no risk of surge and transient overvoltages by lightning or switching operations The voltage peaks in these applications are well definded and are produced by the application itself with a limited energy However the HST should be protected by external high voltage high breaking capacity fuses A further improvement of operational reliability is possible with external surge arresters It should be connected on the HST input behind the fuse against earth ZES ZIMMER 82 96 Sensors and Accessories for precision power meters Voltage sensors 7 1 3 Specifications for serial numbers starting
13. losses in your measured current without warning ZES ZIMMER 27 96 Sensors and Accessories for precision power meters Current sensors 2 8 3 Sensor operation without supply It is important to assure a stable power supply of the sensor before switching on the load current The operation of the sensor with load current and without supply will cause damage of the sensor and or of the LMG supply unit To remove the LMG supply unit from the test location without removing the sensors from the current path disconnect the DSUB9 plug and the HD15 plug from the LMG and connect all of the 9pins and all of the 15pins together with ground shield of the plugs To do this the load current has to be switched off 2 8 4 Connection of the sensor with LMG90 310 The use with LMG90 and LMG310 is not possible 2 8 5 Connection of the sensor with LMG95 The use with LMG95 is not recommended better use L50 Z29 Hallxx and L95 Z07 Set LMG current scaling factor appropriate to the scaling factor marked on the label on L95 Z07 2 8 6 Connection of the sensor with LMG450 Use sensor input you get the following ranges HALL300 HALLSO0 HALL1000 HALL2000 ZES ZIMMER 28 96 Sensors and Accessories for precision power meters Current sensors 2 8 7 Connection of the sensor with LMG500 The use with LMG500 is not recommended please see L50 Z29 Hallxx ZES ZIMMER 29 96 Sensors and Accessories for precision power meter
14. set this current scaling in the range menue of the LMG95 For the use of different current sensors e g alternating with LMG450 not ordered at the same time with L95 Z07 you have to calibrate the sensor together with the LMG95 to find the correct scaling Use the sensor and LMG specifications to calculate the accuracy of the complete system ZES ZIMMER 48 96 Sensors and Accessories for precision power meters LMG95 connection cables and adapter 3 2 PSU PCT K L95 _ DSUBOM to LMG95 grey DSUB9F a esis Gh Figure 28 PSU PCT K L95 for direct connection of the PSU60 200 400 700 and PCT200 600 to the current input of the LMG95 cess ze LMG95 A a aco Stop Wik oo ASAE cow L Freeze H Shune Traneformer npk lt 1 i A a Precision Power Met F Tar a Supply 10V TOA S00 jas 66 66 All Inputs max 600V against if L L i e Source Load N ice 4 z Figure 29 Connection of PSU60 200 400 700 and PCT200 600 to the LMG95 3 2 1 A A Safety warning Always connect the sensor first to the meter and afterwards to the device under test Connecting cables without savety isolation Avoid contact to hazardous voltage Please refer to chapter 1 1 Safety precautions 3 2 2 Installation No additional supply needed Cable length between PSU PCT and LMG 2 5m
15. with B C D HST3 HST6 HST9 HST maximum trms input voltage 3 15kV 6 3kV 9 45kV 12 6kV maximum peak voltage for full 5kV 10kV 15kV 20kV scale accuracy of max 0 08 45Hz 65Hz typ 2 300kHz burden lt 100pF influence of max 0 1 45Hz 65Hz PF gt 0 8 power typ 3 300kHz burden lt 100pF PF gt 0 8 measurement measurement one fixed high voltage lead length 2m for each channel input earth jack as the common reference point one BNC socket for each channel min 500Q max 2nF class I device must be earthed additionally to PE of mains supply cord robust aluminium case size Lx W x H without cable and 330mm x 230mm x 110mm 400mm x 230mm x 110mm connectors approx 6 1kg approx 7 2kg mains supply 230V 50Hz approx 20VA Overvoltage capabilities of high voltage input against earthed case No transient overvoltages allowed ZES ZIMMER 83 96 Sensors and Accessories for precision power meters Voltage sensors 7 1 4 Specifications for serial numbers starting with E Se Ss eS no of channels no of channels channels ordering type HST ined el edd bd el i oe Nominal electrical maximum sine rating of measuring trms voltage for 3 5kV 10 5kV 14kV inputs full scale maximum trms maximum peak voltage for full 5kV 10kV 15kV 20kV scale 10MQIS50pF 20MQI25pF 30MQII22pF 40MQI20pF 1 1000 1 2000 1
16. 0 54 1 5 0 5 0 6 0 54 1 5 Use FLEXxx and LMG specifications to calculate the accuracy of the complete system 2 10 4 Sensor operation without supply It is important to assure a stable power supply of the sensor before switching on the load current The operation of the sensor with load current and without supply will cause damage of the sensor and or of the LMG supply unit To remove the LMG supply unit from the test location without removing the sensors from the current path disconnect the HD15 plug from the LMG and connect all of the 15pins together with ground shield of the plug To do this the load current has to be switched off 2 10 5 Connection of the sensor with LMG90 310 The use with LMG90 and LMG310 is not possible 2 10 6 Connection of the sensor with LMG95 Use L95 Z07 internal supply via LMG and the Isensor external shunt input Set LMG current scaling factor appropriate to the scaling factor marked on the label on L95 Z07 2 10 7 Connection of the sensor with LMG450 Use sensor input internal supply via LMG you get the following ranges FLEXS500 ZES ZIMMER 34 96 Sensors and Accessories for precision power meters Current sensors FLEX 1000 FLEX3000 2 10 8 Connection of the sensor with LMG500 Use L50 Z14 internal supply via LMG you get the following ranges FLEXS500 FLEX 1000 FLEX3000 ZES ZIMMER 35 96 Sensors and Accessories for precision power meters Curren
17. 0ohms don t use the upper ranges outside accuracy specification 20ohms 15m don t use the upper ranges outside accuracy specification 50ohms don t use the upper ranges outside accuracy specification 100o0hms ZES ZIMMER 44 96 Sensors and Accessories for precision power meters Current sensors don t use the upper ranges outside accuracy specification 200o0hms don t use the upper ranges outside accuracy specification ZES ZIMMER 45 96 Sensors and Accessories for precision power meters LMG95 connection cables and adapter 3 LMG95 connection cables and adapter 3 1 Adapter for the use of HD15 Sensors with LMG95 L95 Z07 Figure 27 Adapter for the use of HD15 Sensors with LMG95 L95 Z07 3 1 1 A A Safety warning Always connect the sensor first to the meter and afterwards to the device under test Connecting cables without savety isolation Avoid contact to hazardous voltage Please refer to chapter 1 1 Safety precautions 3 1 2 Specifications SZ AS ZADG CO 5 210 sz Plug the DSUB connector to LMG95 external supply and the two 4mm jacks to LMG95 ext Shunt L ZES ZIMMER 47 96 Sensors and Accessories for precision power meters LMG95 connection cables and adapter 3 1 3 Accuracy If you order the accessory L95 Z07 together with the suitable current sensor then you can find a label with the scaling factor on L95 Z07 Please
18. 2 25 ZIMMER ZES Sensors and Accessories for precision power meters LMG series 90 310 95 450 500 version 28 May 2014 ZES current and voltage sensors and accessories This data book is the technical dokumentation of the current and voltage sensors from ZES ZIMMER Electronic Systems GmbH to enlarge the measuring ranges of the power meters series LMG The first section of this paper gives an survey of all ZES current sensors and the safety precautions Selection table and several arguments should help you to find a suitable sensor family or fill out the support request form The second section is about the general current sensors which you can use with every precision power meter of the LMG series In the following sections the special sensors wiring cables and accessories for the different precision power meters are described Then you find a chapter with the precision high voltage divider for meters of the LMG series The last section with frequently asked questions will help you to optimize the accuracy and give you some hints for the usage of our sensors But in all cases if you need more information or detailed support for your application please don t hesitate to contact us the engineers of ZES ZIMMER will help you Copyright 2014 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 We reserve the right to implement technic
19. Average over a couple of measurement cycles Selection of the filter is always a compromise of fast reaction on variation of input signal and reduction of ripple on output signal The user can find optimal setting weighing these antithetic approaches 6 2 5 Incremental encoders with two 90 degree phase shifted a outputs Rosson ole a Unit Left most Left Right most switch adjacent of 1 min 144000 576000 2304000 9216000 revolution speed Specified tolerance of m value 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 of m range Mar pulse dopul 2400 9600 38400 153600 frequency using Formula for Scale imin 1152000 Z 1152000 Z 1152000 Z 1152000 2 Z is the number of wa per rotation of the used incremental encoder speed eaa ZES ZIMMER 64 96 Sensors and Accessories for precision power meters Accessories 6 2 6 Incremental encoders with single pulse outputs Potion vie _ Unit Left most Left Right most switch adjacent of 1 min 288000 1152000 4608000 9216000 revolution speed Specified tolerance of m value 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 of m range Mas pulse anput 4800 19200 76800 153600 frequency using Formula for Scale imin 2304000 Z 2304000 Z 2304000 Z 1152000 2 Z Z is the number of a per rotation of the used incremental encoder speed Kee The recognition of the rotating direction is not possible The output voltage is always negati
20. SUB15M to LMG im ZES ZIMMER 26 96 Sensors and Accessories for precision power meters Current sensors 2 8 1 A A Safety warning Always connect the sensor first to the meter and afterwards to the device under test Connecting cable without savety isolation Avoid contact to hazardous voltage Do not overload any current sensor with more than the measurable TRMS value Please refer to chapter 1 1 Safety precautions 2 8 2 Specifications and accuracies Accuracies based on sinusoidal current ambient temperature 23 3 C calibration interval 1 year conductor in the middle of the hall sensor Accuracies in of measurable TRMS value at DC 100Hz 4A Use HALLxx and LMG specifications to calculate the accuracy of the complete system The transformers are only allowed to operate with cables which according to the printing on the cable are designed for this individual transformer This sensors have an additional 9 pin SUB D connector for an external supply for example SSU4 If you want to use your own supply you have to use the following pins of the 9 pin SUB D connector GND Pin 3 and Pin 4 always connect both 15V Pin5 15V Pin9 Please make sure that your own power supply can drive the needed supply current If you offer too few current you will get distortions and other accuracy
21. Z326 and LMG specifications to calculate the accuracy of the complete system 2 2 4 Sensor operation without connection to LMG It is important to assure a good connection from the sensor to the LMG before switching on the load current 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 2 2 5 Connection of the sensor with LMG90 310 or other instruments with current input Use direct current inputs I and I 2 2 6 Connection of the sensor with LMG95 Use direct current inputs I and I 2 2 7 Connection of the sensor with LMG450 Use direct current inputs I and I 2 2 8 Connection of the sensor with LMG500 Use direct current inputs I and I ZES ZIMMER 13 96 Sensors and Accessories for precision power meters Current sensors 2 3 AC current clamp 200A 1A LMG Z325 i ae a er E t Figure 6 Dimensions of the LMG Z325 2 3 1 J Safety warning No safety isolation measurements only at insulated conductors allowed Always connect the sensor first to the meter and afterwards to the device under test Please refer to chapter 1 1 Safety precautions 2 3 2 Specifications Nominal input current 200A 200 1 250A 250A for 3min Bandwidth 40Hz to 5kHz ZES ZIMMER 14 96 Sensors and Accessories for precision power meters Current sensors Isolation bare conductor phase ground 30Veff insulat
22. al changes at any time particularly where these changes will improve the performance e Headquarter Germany ZES ZIMMER Electronic Systems GmbH Tabaksmiihlenweg 30 D 61440 Oberursel Taunus Germany phone 49 0 6171 628750 fax 49 0 6171 52086 email sales zes com internet http www zes com e Subsidiary USA ZES ZIMMER Inc 2850 Thornhills Ave SE Suite 114 Grand Rapids MI 49546 USA phone 1 760 550 9371 email usa zes com internet http www zes com ZES ZIMMER 2 96 Sensors and Accessories for precision power meters Content A AAO CNIC ITO EAA entrees eter Nee eke iret is wei cht Led Geeta ae 5 1 1 Safety PRECAU 1 ONS sccancevenes cats nates aie iiienacahccndsunalnntanv cre ai ii 5 2 Current SENSO Sierre ass sects raneren di aaia niedda 9 2 1 Active error compensated AC current clamp 40A LMG Z406 Z407 9 2 2 AC current clamp 200A 0 2A LMG Z326 0 ceccccceesececeesteceeeseeeeeennees 12 2 3 AC current clamp 200A 1A LMG Z325 ccceecsccceestecceesteceesseeeeeeanees 14 2 4 Error compensated AC current clamp 1000A L45 Z10 Z11 00 16 2 5 DC current clamp 1000A L45 Z26 eeecccceesececeeneceesseeeceeeeeeeeennees 18 2 6 Error compensated AC current clamp 3000A L45 Z16 Z17 20 2 7 Hall current sensors 50 100 200A L45 Z28 HALLXxX 000000000eeee 23 2 8 Hall current sensors 300 500 1k 2kA L45 Z29 HALLXxX 000068 26 2 9 Hall current sensors 300
23. ccessories 6 1 Sensor supply unit for up to 4 current sensors SSU4 The SSU4 is a supply unit to feed up to 4 pieces of current sensors Each sensor can be supplied with 15V 500mA 15V 500mA at the same time The transducers are connected to the four 9 pin SUB D connectors Depending on the sensor the output signal can be accessed directly from the sensor or via the 15 pin SUB D connector 6 1 1 Technical data Mains supply 85 264V 47 440Hz ca 40W Fuse 5x20mm T3 15A 250V IEC127 2 3 IP20 according DIN40050 Protection class I Mains supply Overvoltage class H and pollution degree 2 according IEC61010 1 EMC EN55011 EN50082 Dimensions Desktop 320mm W x 49mm H x 307mm D eee 19 rack 63DU x 1HU x 360mm Climatic class KYG according to DIN 40040 en ode nminy a ma ee 8 inng ZES ZIMMER 57 96 Sensors and Accessories for precision power meters Accessories 6 1 2 Technical drawings p 40 306 a f G D N Se igs O S UI i bas ee eee due Ma J i 7 483 5 320 ee na SSU4 Sensor Supply Unit so Ip Foner Channel 1 Channel 2 Channel 3 Channel 4 NS j o o o o o o o o ESE CH Y 7 OS dfan aen 00 O CE A Please read safety instructions To prevent
24. cy of the complete system 2 5 4 Connection of the sensor with LMG90 310 The use with LMG90 and LMG310 is not possible 2 5 5 Connection of the sensor with LMG95 Use L95 Z07 internal supply via LMG and the Isensor external shunt input Set LMG current scaling factor appropriate to the scaling factor marked on the label on L95 Z07 2 5 6 Connection of the sensor with LMG450 Use sensor input internal supply via LMG you get the following ranges 2 5 7 Connection of the sensor with LMG500 Use L50 Z14 internal supply via LMG you get the following ranges ZES ZIMMER 19 96 Sensors and Accessories for precision power meters Current sensors 2 6 Error compensated AC current clamp 3000A L45 Z16 Z17 L45 Z17 is a set of 4x L45 Z16 a i HD SUB 15M Figure 12 Dimensions of the L45 Z16 Z17 2 6 1 Z Safety warning Always connect the sensor first to the meter and afterwards to the device under test Connecting cable without savety isolation Avoid contact to hazardous voltage Please refer to chapter 1 1 Safety precautions ZES ZIMMER 20 96 Sensors and Accessories for precision power meters Current sensors 2 6 2 Specifications Nominal input current Max eva Measuring range current clamp Wei 2 6 3 Accuracy Accuracies based on
25. ding installations Measurement category II corresponds to measurements taken on circuits directly connected to low voltage installations Measurement category I corresponds to measurements taken on circuits not directly connected to mains ZES ZIMMER 7 96 Sensors and Accessories for precision power meters Current sensors 2 Current sensors 2 1 Active error compensated AC current clamp 40A LMG Z406 Z407 LMG Z407 is a set of 4x LMG Z406 as conductor Figure 1 LMG Z406 Z407 standard length 3m optional 1m 10m HDSUB15 to LMG 23 L 115 Figure 2 Dimensions of the LMG Z406 Z407 2 1 1 J Safety warning No safety isolation measurements only at insulated conductors allowed Always connect the sensor first to the meter and afterwards to the device under test Connecting cable without savety isolation Avoid contact to hazardous voltage Please refer to chapter 1 1 Safety precautions 2 1 2 Specifications 80A 120Apk 500A for 1s 5Hz to 50kHz ZES ZIMMER 9 96 Sensors and Accessories for precision power meters Current sensors Isolation bare conductor phase ground 30Veff insulated conductor see cable spec Temperature range 10 C to 50 C Weight 120g Output connection HD15 with EEPROM for LMG sensor input With its high basic accuracy the lower cut off frequency of 5Hz and the upper cut off frequency of 50kHz this clamp f
26. e of different HST types 7 1 6 Example wirings High voltage wire BNC sockets CH3 CHS Ui Vv1 2000 U2 V2 2000 Figure 52 example wirings HST6 2 Two possible example wirings are shown A two channel measurement in the upper part of the figure and a differential voltage measurement in the lower part of the figure ZES ZIMMER 85 96 Sensors and Accessories for precision power meters Voltage sensors 7 1 7 HST wiring of 3 phase systems load e g motor High voltage fuses with high breaking capacity with nominal current lt 1 A designed for voltage transformer protection Installation nearby HV line Surge arresters for limitation of transient overvoltage to the value admissible for HST Installation of HST inside the high voltage switchgear Connection to power meter with star delta conversion UA I U I or UAIA OR a rae Seca 5 Oe Le CL Hoe poe e io se shield not connected to the LMG CH1 but only to the protective earth terminal of the HST Alternatively Up to 100 m shielded wire eee tects eens a Connection to power meter p 5 without star delta conversion oF oar i U10 scale i Up to 100 m shielded wire shield not connected to the LMG but only to the protective earth terminal of the HST Figure 53 HST wiring of 3 phase systems 5 a e a a On the highvoltage side HST input1 input2 and input3 connects to L1 L2 and L3 Al
27. e same IP address after its next startup Configure your local DHCP server that the fix MAC address of Z318 gets everytime the same IP address or set a fix and free IP address manually This is important because in the next step you assign a virtual COM port to this IP address and if the IP address was different after the next startup the virtual COM port would be not available e Select add a new device It might be necessary to remove previous installed drivers with remove an existing device Digi RealPort Setup Wizard Welcome to the Digi RealPort Setup Wizard This wizard will help you to manage Digi RealPort on your system Digi s patented RealPort software enables your application to access your serial device over the network as if itis connected to a local COM port Please select an option C Remove an Existing Device C Update Digi RealPort Software To continue click Next Figure 44 e Select the device Digi RealPort Setup Wizard Select Device From the list below select the device you would like to use If your device is not in the list select lt Device not listed gt and click Next Devices found on your network IP Address MAC Address e 192 168 2132 00 40 9D 2E 37 1F Digi Connect SP RS232 82 192 168 2 144 00 40 9D 29 31 4B Digi One SP s lt Device initiated RealPort gt lt Device not listed gt E Searching Don t see your device Click here for help Re
28. e use of PCT200 PCT600 PSU60 PSU200 PSU400 or PSU700 with SSU4 K L31 no modification is necessary for PSU200 K L45 or something like that The following changes concerning this documentation are done 1 In the four connector to the sensors pin1 is connected with gnd for current return 2 The current output signal of the sensor is connected via a 0 ohms resistor to the corresponding channel of the 15 pin connector for the instrument When the current returns from the instrument it is fed into ground 3 The SSU4 with modification can not be used with PSU600 6 1 7 Modification option of SSU4 available for the use of PSU1000HF together with LMG450 and LMG500 The following changes concerning this documentation are done 1 DSUB9 connectors for the sensors 15V max 1000mA es Current output signal of the sensor max 1000mA 9 15V max 1000mA ZES ZIMMER 62 96 Sensors and Accessories for precision power meters Accessories 6 2 Adapter for incremental rotation speed encoders L45 Z18 Figure 37 L45 Z18 6 2 1 J Safety warning Always connect the sensor first to the meter and afterwards to the device under test Connecting cable without savety isolation Avoid contact to hazardous voltage Please refer to chapter 1 1 Safety precautions 6 2 2 General This plugon adapter for LMG450 converts pulses of common industrial incremental encoders with two 90 degree phase shifted p
29. e use with LMG450 is not possible 2 9 7 Connection of the sensor with LMG500 Use L50 Z14 internal supply via LMG you get the following ranges HALL300 HALL500 HALL1000 HALL2000 ZES ZIMMER 32 96 Sensors and Accessories for precision power meters Current sensors 2 10 Rogowski flex sensors L45 Z32 FLEXxx j GP C HDSUB15M ro LMG 450 Clip on rectangular a x b Clip on round Figure 24 Dimensions of the L45 Z32 FLEX xx 2 10 1 AN Safety warning Always connect the sensor first to the meter and afterwards to the device under test Connecting cable without savety isolation Avoid contact to hazardous voltage Please refer to chapter 1 1 Safety precautions 2 10 2 Specifications Sensor Permissible peak range value ZES ZIMMER 33 96 Sensors and Accessories for precision power meters Current sensors Clip on rectangular a x b 20mm x 85mm 30mm x 120mm 60mm x 250mm Weight 100g Temperature range 20 C 85 C Protection class 600V CATIII Output connection HD15 plug with EEPROM for LMG sensor input 2 10 3 Accuracy Accuracies based on sinusoidal current ambient temperature 23 3 C calibration interval 1 year conductor in the middle of the clamp The values are of measuring value of rated range value Frequency Hz 10Hz to 45Hz 45Hz to 65Hz 65Hz to 1kHz 1kHz to 5kHz FLEX xx current accuracy
30. ed conductor see cable spec safety sockets for 4mm plugs 2 3 3 Accuracy Accuracies based on sinusoidal current ambient temperature 23 3 C conductor in the middle of the clamp signal frequency 50 60 Hz Use LMG Z325 and LMG specifications to calculate the accuracy of the complete system 2 3 4 Sensor operation without connection to LMG It is important to assure a good connection from the sensor to the LMG before switching on the load current 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 2 3 5 Connection of the sensor with LMG90 310 or other instruments with current input Use direct current inputs I and I 2 3 6 Connection of the sensor with LMG95 Use direct current inputs I and I 2 3 7 Connection of the sensor with LMG450 Use direct current inputs I and I 2 3 8 Connection of the sensor with LMG500 Use direct current inputs I and I ZES ZIMMER 15 96 Sensors and Accessories for precision power meters Current sensors 2 4 Error compensated AC current clamp 1000A L45 Z10 Z11 L45 Z11 is a set of 4x L45 Z10 HDSUB15M to LMG Figure 8 Dimensions of the L45 Z10 Z11 2 4 1 Z Safety warning Always connect the sensor first to the meter and afterwards to the device under test Connecting cable without savety isolation Avoid contact to hazardous
31. eft most Left Right most switch adjacent of 1 min 288000 1152000 4608000 9216000 revolution speed Specified tolerance of m value 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 of m range Mas pulse anput 4800 19200 76800 153600 frequency using Formula for Scale imin 2304000 Z 2304000 Z 2304000 Z 1152000 2 Z Z is the number of a per rotation of the used incremental encoder speed Kee The recognition of the rotating direction is not possible The output voltage is always negative if input B is left open The output voltage is always positive if input B is tied to pin supply 5V 6 3 7 Scaling In range menu of LMG500 you can set the calculated scale value of the last line from above mentioned chart depending on the pulse rate Z per rotation of the used incremental encoder Then the revolution will be presented correctly in value 1 min on the display The unit will however be A or V Displayed 1 465kA means 1465 1 min For further user friendly presentation utilise capabilities of LMG500 built in formula editor and user defined menu 6 3 8 Pin assignment 9 pin D Sub connector male to incremental encoder Raa I al Function Supply Supply GND Input A Input B No connection Screen 5V 5V on internal test pins on GND screen ZES ZIMMER 69 96 Sensors and Accessories for precision power meters Accessories 6 3 9 Pulse input A and B Permissible input voltage U
32. en looking onto the encoder shaft ZES ZIMMER 67 96 Sensors and Accessories for precision power meters Accessories 6 3 4 Ripple As a matter of principle of frequency to voltage conversion there is a ripple at low revolution on output voltage Built in filters are optimised for short settling time without overshooting In case that remaining ripple is too high this can be reduced with the settings of LMG for example e Select adjustable lowpass filter in measuring channel e Extend the measuring cycle time e Average over a couple of measurement cycles Selection of the filter is always a compromise of fast reaction on variation of input signal and reduction of ripple on output signal The user can find optimal setting weighing these antithetic approaches 6 3 5 Incremental encoders with two 90 degree phase shifted a outputs Rosson ole a Unit Left most Left Right most switch adjacent of 1 min 144000 576000 2304000 9216000 revolution speed Specified tolerance of m value 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 of m range Mar pulse dopul 2400 9600 38400 153600 frequency using Formula for Scale imin 1152000 Z 1152000 Z 1152000 Z 1152000 2 Z is the number of wa per rotation of the used incremental encoder speed eaa ZES ZIMMER 68 96 Sensors and Accessories for precision power meters Accessories 6 3 6 Incremental encoders with single pulse outputs Potion vie _ Unit L
33. essories for precision power meters Accessories 6 3 Adapter for incremental rotation speed encoders L50 Z18 Figure 38 L50 Z18 6 3 1 J Safety warning Always connect the sensor first to the meter and afterwards to the device under test Connecting cable without savety isolation Avoid contact to hazardous voltage Please refer to chapter 1 1 Safety precautions 6 3 2 General This plugon adapter for LMG500 converts pulses of common industrial incremental encoders with two 90 degree phase shifted pulse outputs into analogue voltage This voltage can be analysed graphically with high temporal resolution by using sensor input of LMG500 Compared to this digital encoder input of process signal interface provides only one value each measuring cycle and with L50 Z18 you get a fast high dynamic response to changes in rotation speed 6 3 3 Description Incremental encoders speed sensors with TTL technology supply 5V and GND or HTL technology supply 5V and 5V can be connected There are four colour coded measuring ranges of the adapter to align with different pulse rates Z of the incremental encoder and maximum revolutions per minute Nmax Attention Read measuring value Idc only this presents exact speed values according to absolute value and sign depending on sense of rotation Positive output voltage is seen in case A signal leads electrically by 90 to B signal This equates usually to clockwise rotation wh
34. ety laboratory plugs To do this the load current has to be switched off ZES ZIMMER 51 96 Sensors and Accessories for precision power meters LMG450 connection cables and adapter 4 LMG450 connection cables and adapter The special design of all LMG450 sensors makes them very easy and comfortable to use The HD15 SUB D plug contains the identification of the sensor type the measuring ranges including the needed scaling and several more parameters The LMG450 reads this values and the meter will automatically 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 4 1 BNC adapter to sensor input HD15 without EEPROM L45 Z09 Figure 30 L45 Z09 By this adapter you can connect a voltage via a BNC cable to the LMG450 external current sensor input This voltage has to be isolated because the BNC screen is electrically connected to the case of the LMG450 This is a simple electrical adapter No values can be stored ZES ZIMMER 52 96 Sensors and Accessories for precision power meters LMG450 connection cables and adapter 4 2 Adapter for isolated custom current sensors with 1A output L45 Z22 grey to current sensor low PA HD15M plug ee to LMG Lee p to current sensor high Sens
35. fresh lt Back Cancel Figure 45 e and assign a virtual COM port ZES ZIMMER 76 96 Sensors and Accessories for precision power meters Accessories Digi RealPort Setup Wizard Describe the Device Enter information for the device you would like to use Device Model Name Digi Connect SP AS232 Network Settings COM Port Settings Device Features IP C MAC C DNS C TOP L No Ports IV Encryption 192 168 2 132 Zz Authentication Default Network Profile Starting COM TCP Typical Settings x COM8 J RealPort TCP I Skip Modem PnP 77 Install Options M Wait for COM open request Help lt Back Cancel Figure 46 The power meter LMG is now accessible via this virtual COM port 6 5 8 Configuration and Management by web interface e Start your Browser and login to the IP adress obtained to your LAN adapter Z318 http 192 168 x xx login htm with the username root and the password dbps CE Eiels Figure 47 e Here you can manage the settings in a comfortable way e g check MAC Address IP Adress firmware update and so on ZES ZIMMER 771 96 Sensors and Accessories for precision power meters Accessories Digi Connect SP RS232 Configuration and Management Mozilla Firefox CS ENGI Digi Connect SP RS232 Configuration and Management Getting Started Tutorial Not sure what to do next This Tutorial can help Sys
36. given The measurement is made with a LMG95 the accuracies of the channels are in of measuring value of measuring range Frequency Hz 45 to 65 Voltage 0 01 0 02 Current 0 01 0 02 Active Power 0 015 0 02 The clamp with which is measured is the LMG Z322 with an accuracy of 200A to 1000A 0 75 Ratio of 1000 1 At the I channel we are using a scaling of 1000 to get the correct currents at the display In the following examples all values are calculated for the primary side what means on measured signal level The readings are Ums 230 000V range 250V range peak value 400V Ims 100 000A primary 0 1A secondary range 150mA gt range peak value 469mA calculated back to the primary side range 150A gt range peak value 469A f 50Hz Q 45 P 16 2635kW range 37 5kW gt range peak value 187 6kW AC coupling mode for the signal is selected what means you have no errors because of the DC offset of the signal ZES ZIMMER 91 96 Sensors and Accessories for precision power meters FAQ frequently asked questions Knowledge base From the table above the following errors of the LMG95 itself for voltage and current can be determined using the peak values of the respective measuring range AU 0 01 of Rdg 0 02 of Rng 0 023V 0 08V 0 103V AL uco 0 01 of Rdg 0 02 of Rng 0 01A 0 0938A 0 1038A AP css 0 015 of Rdg 0 02 of Rng 0 00244kW 0 03752
37. hput with LMG95 450 500 binary mode about 3000 measuring values trms ac dc harmonics flicker sample values per second ascii mode about 1000 measuring values per second 6 5 3 Connection of the adapter L95 Z318 with LMG95 LMG95e Plug the connector of L95 Z318 labeled with to LMG s COM B conn to the LMG95 LMG95e COM B jack Plug the connector of L95 Z318 labeled with supply to the LMG95 LMG95e auxilary transducer supply jack if your application uses the supply jack e g for PSU600 then use LMG Z318 with external supply via wall wart Switch on the power meter and connect the LAN cable assure that the LMG firmware is 3v136 or newerfor LMG95 5v136 or newer for LMG95e 6 5 4 Connection of the adapter L45 Z318 with LMG450 Plug the connector of L45 Z318 labeled with to LMG s COM B conn to the LMG450 COM B jack ZES ZIMMER 74 96 Sensors and Accessories for precision power meters Accessories Plug the connector of L45 Z318 labeled with supply to one of the LMG450 current clamp 1 2 3 4 jacks whichever is free if your application uses four current sensors then use LMG Z318 with external supply via wall wart Switch on the power meter and connect the LAN cable assure that the LMG firmware is 2v121 or newer 6 5 5 Connection of the adapter L50 Z318 with LMG500 Plug the connector of L50 Z318 labeled with to LMG s COM B conn to the LMG500 COM B jack Plug the con
38. ies for precision power meters Accessories 6 5 Ethernet Adapter L95 Z318 L45 Z318 L50 Z318 LMG Z318 Figure 41 L95 Z318 L45 Z318 L50 Z318 supply via LMG 300mm 24mm Figure 42 L95 Z318 L45 Z318 L50 Z318 supply via LMG Figure 43 LMG Z318 external supply via wall wart This LAN adapter Z318 is useful for the communication with a power meter LMG located anywhere in a local area network LAN via a virtual COM port simulation The communication is transmitted by the driver over LAN to the LMG for user purposes in the same way as e g the direct connection of PC COM1 to LMG COMa The power meter LMG will be accessible via this virtual COM port Perfect suitable for LMG Control software ZES ZIMMER 73 96 Sensors and Accessories for precision power meters Accessories 6 5 1 A Safety warning Please refer to chapter 1 1 Safety precautions 6 5 2 System requirements hardware specifications Windows XP home Windows XP professional Windows 32bit or 64bit For other operating systems including Windows 98 2000 NT Vista Linux Debian Mandriva RedHat Suse Ubuntu see http www digi com gt support gt drivers and download the driver appropriate for your operating system for Digi Connect SP auto sensing to 10 100 Mbit s Ethernet throughput up to 230 400 baud data flow control with RTS CTS hardware reset with break data throug
39. is under all conditions absolutely necessary to earth the case of the HST3 6 9 12 to obtain safety and functionality Use sufficient cross section of the earthing conductor to match the possible shortcircuit currents Connection to voltages of more than 1000V should only be done with the use of external high voltage high breaking capacity fuses To prevent partial discharges the unshielded high voltage leads of HST must have a distance between each other to other conductive parts and against earth of at least 25mm HST3 and HST6 and 50mm HST9 and HST12 Don t touch the high voltage leads to avoid partial discharges Because the measuring inputs of HST are designed for voltages gt 1000V the respective safety rules for electrical equipment and installations above 1000V have strictly to be regarded Please refer to chapter 1 1 Safety precautions ZES ZIMMER 81 96 Sensors and Accessories for precision power meters Voltage sensors 7 1 2 General The wide band precision high voltage divider of series HST expand the voltage measuring range of ZES ZIMMER precision power meter LMG for use at nominal voltages over 1000V The high voltage inputs are equipped with 2m leads that is attached to the voltage measured against earth The open leads can be aligned by the customer The HST 3 resp HST6 9 12 divides DC AC or any distorted voltages with very high accuracy by the factor 1000 resp 2000 3000 4000 The divided voltage
40. its best for measurements at frequency inverter output The internal error compensation circuit is designed especial for this application 2 1 3 Accuracy Accuracies based on sinusoidal current ambient temperature 23 3 C calibration interval 1 year conductor in the middle of the clamp The values are in of measuring value of measuring range current clamp and in phase error in degree Influence of coupling mode This current clamp can transfer only AC currents The compensation circuit may cause a DC signal wich is interpreted by the instrument as a DC current This 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 5Hzto 10Hzto 45Hzto 65Hzto 1kHz to 5kHz to 20kHz to 10Hz 45Hz 65Hz 1kHz 5kHz 20kHz 50kHz we eGo a 0s ee a Use LMG Z406 Z407 and LMG specifications to calculate the accuracy of the complete system 2 1 4 Ordering guide The current clamp LMG Z406 is available in a package with 4 clamps it is called LMG Z407 The standard connection length is 3m Optionally can be ordered a custom defined length between 1m 10m 2 1 5 Sensor operation without supply It is important to assure a stable power supply of the sensor before switching on the load current The operation of the sensor with load current and without supply will cause damage of the sensor and or of the LMG ZES ZIMMER 10
41. kW 0 03996kW Additional to these three errors there is the error caused by the current clamp First the amplitude error which will be added to the Ali moos AL 1 5 of rdg 1 5A clamp So you get a total current error of Al 1 6038A total Al iicos Al clamp The second error which is caused by the clamp is the error of the additional phase shift of 2 This error will influence the active power In this example the power can be calculated as P U I coso So the total differential gives you the error oP oP oP AP AU AI A clamp OU a total Op q you get AP anp I CoS AU U cos 9 AL u U I sin p Ag At this point only the errors of the clamp are used the errors of the LMG are already calculated AU 0 Al Alctamp Ox A Raat o AQ 2 For the angles you have to use the radient 45 rad ZES ZIMMER 92 96 Sensors and Accessories for precision power meters FAQ frequently asked questions Knowledge base AP any 100 cos 0 0V 4 ig 230V cos 1 5A 230V 100A sin 0 085 0 0W 243 95W 569 22W 813 17W At this point the error values caused by the clamp should be marked The amplitude error of the clamp 243 95W and the phase shift causes 569 22W what means 813 17W error are caused by the clamp The total error of the active power is AP total T AP LMG95
42. l current frequency of a frequency inverter output It needs about 100uA fundamental current at the signal input That means with a 1000A 1A current clamp it is possible to detect the fundamental in a wide current range from 100mA to 1000A If the fundamental current is lower than 100mA several load current windings in the clamp can be used to enlarge the sensitivity or use an other clamp with 100A 1A ratio LMG500 settings in the measure menue set Sync to ExClmp and adjust the lowpass corner frequency Important L50 Z19 can be configured only in Group A if it is configured in Group A it can be used in Group B as well via Sync ext ZES ZIMMER 71 96 Sensors and Accessories for precision power meters Accessories eB 0M Os ate eh f ut Globals_ Line Ext as Sync Sync Filter Demod C me S Cpl Highpass a Lowpass Signal Processing Figure 40 L50 Z19 Select a filter with a lowpass frequency bigger than every possible fundamental frequency and lower than every possible switching frequency under all conditions of starting breaking and acceleration of the motor 6 4 2 Specifications min current for stable about 100uA synchronisation NO ISOLATION see safety warning connection length about 50cm but can be extended with usual savety laboratory leads 6 4 3 Connection of the sensor with LMG90 310 95 450 not possible ZES ZIMMER 72 96 Sensors and Accessor
43. l voltage measurements have the same reference potential earth Also isolated sources as these are always bound to earth by their earth capacities can be measured with the earthed HST On the low voltage side the connection to the power meter LMG or other instruments can be done in two different ways 1 Instruments with internal star delta conversion are connected like shown in the upper part of the drawing Advantage is that unbalanced sources are measured correctly the total power is determined correctly as well as the power of each phase ZES ZIMMER 86 96 Sensors and Accessories for precision power meters Voltage sensors 2 Instruments without star delta conversion are connected like shown in the lower part of the drawing The line voltages with reference potential earth can be tapped directly at the BNC jacks Even with unbalanced sources the total power is determined correctly 7 1 8 Included in delivery e precision high voltage divider HST e about 3m BNC connection cable from HST to the power meter LMG e adapter BNC to 4mm plugs 7 1 9 Option mounting clips HST Z01 Z02 This option has to be specified at the order respectively a refitting can be only made by ZES ZIMMER Figure 55 HST Z01 Figure 56 HST Z02 ZES ZIMMER 87 96 Sensors and Accessories for precision power meters Voltage sensors HST9 HST Z01 180mm 450mm HST12 7 1 10
44. ll current sensors 50 100 200A L45 Z28 HALLxx 36 5 Figure 13 Dimensions of the L45 Z28 HALL50 and HALL100 HDSUBI1SM to LMG Figure 14 Dimensions of the L45 Z28 HALL200 2 7 1 A A Safety warning Always connect the sensor first to the meter and afterwards to the device under test Connecting cable without savety isolation Avoid contact to hazardous voltage Do not overload any current sensor with more than the measurable TRMS value Please refer to chapter 1 1 Safety precautions 2 7 2 Specifications and accuracies Accuracies based on sinusoidal current ambient temperature 23 3 C calibration interval 1 year conductor in the middle of the hall sensor ZES ZIMMER 23 96 Sensors and Accessories for precision power meters Current sensors Accuracies in of measurable TRMS value at DC 100Hz Use HALLxx and LMG specifications to calculate the accuracy of the complete system This sensors are supplied by the HD15 sensor connector of the LMG The transformers are only allowed to operate with cables which according to the printing on the cable are designed for this individual transformer 2 7 3 Sensor operation without supply It is important to assure a stable power supply of the sensor before switching on the load current The operation of the sensor with load current and without supply will cause damage of the sensor and or of the LMG supply unit To remove the LMG supply unit f
45. lowmin 30V at 1 4mA Ulowmax 0 8V at 0 001mA Uhighmin 2V at 0 002mA Uhighmax 30V at 1 2mA Input resistance 1Mohms at 0V lt Uin lt 5V 22kohms at 30V lt Uin lt 30V 6 3 10 Encoder supply Voltage 5V 10 Load max 100mA 6 3 11 Connection of the sensor with LMG90 310 95 not possible 6 3 12 Connection of the sensor with LMG450 not possible use L45 Z18 6 3 13 Connection of the sensor with LMG500 Plug and use solution like current sensors Use current channel ZES ZIMMER 70 96 Sensors and Accessories for precision power meters Accessories 6 4 Synchronisation adapter with adjustable lowpass filter L50 Z19 Figure 39 L50 Z19 6 4 1 N Safety warning 1 first connect the clamp to L50 Z19 2 connect L50 Z19 to LMG500 Sync input and switch the power meter on 3 then connect the clamp to the device under test Synchronisation adapter without safety isolation Only for current clamps with galvanic isolation NO DIRECT CONNECTION TO ANY EXTERNAL VOLTAGES Please refer to chapter 1 1 Safety precautions L50 Z19 is an accessory for the precision power meter LMG500 It can be used with any xxA 1A current clamp e g LMG Z325 LMG Z326 LMG Z322 or LMG Z329 A burden resistor a high sensitivity amplifier and a 8th order Butterworth lowpass filter are included in the DSUB15 plug to assure stable synchronisation to any disturbed signal It simplifies the synchronisation to the fundamenta
46. lue 0m 130m 270m sm j e e e dont use the upper ranges outside accuracy specification 2ohms EMEN 30m don t use the upper ranges outside accuracy specification Sohms oman mats value max ms value Tam 26m don t use the upper ranges outside accuracy specification ZES ZIMMER 42 96 Sensors and Accessories for precision power meters Current sensors 10ohms nominal value 12m 25m 50m pommel aie Bm 2m 19 53m 30 06m 78 13m 1563m don t use the upper ranges outside accuracy specification 20ohms don t use the upper ranges outside accuracy specification 50ohms don t use the upper ranges outside accuracy specification 1000hms don t use the upper ranges outside accuracy specification 200ohms don t use the upper ranges outside accuracy specification 2 12 6 Connection of the sensor with LMG450 The use with LMG450 is not possible 2 12 7 Connection of the sensor with LMG500 Use external sensor input you get the following ranges all in A ZES ZIMMER 43 96 Sensors and Accessories for precision power meters Current sensors lohm max peak value 63m 125m 250m 300m ji f2 fe fs don t use the upper ranges outside accuracy specification 2ohms EMEN don t use the upper ranges outside accuracy specification Sohms don t use the upper ranges outside accuracy specification 1
47. m trms input current Sohms regard maximum trms input current 10ohms poma regard maximum trms input current 20ohms ZES ZIMMER 39 96 Sensors and Accessories for precision power meters Current sensors 5m regard maximum trms input current 50ohms regard maximum trms input current 1000hms regard maximum trms input current 200o0hms am regard maximum trms input current 500ohms regard maximum trms input current 1000ohms regard maximum trms input current ZES ZIMMER 40 96 Sensors and Accessories for precision power meters Current sensors 2 12 Low current shunt with overload protection LMG SHxx P Pe jg o ff is Figure 26 LMG SHxx P 2 12 1 Z Safety warning Always connect the sensor first to the meter and afterwards to the device under test Please regard that there is no isolation inside the Sensor therefore the instrument needs isolated inputs The Sensor is suitable for LMG95 LMG500 and LMG310 but not for LMG450 Please refer to chapter 1 1 Safety precautions 2 12 2 Selection of the resistance value Select an applicable shunt resistance according to the necessary load current range Values between 1 ohm and 200 ohms are available Select the resistance value by the maximum peak input current according to the table in chapter 2 31 3 But take into concern that this shunt resistance i
48. nector of L50 Z318 labeled with supply to one of the LMG500 sensor ID jacks whichever is free Switch on the power meter and connect the LAN cable assure that the LMG firmware is 4v077 or newer 6 5 6 Connection of the adapter LMG Z318 with any LMGxx Connect the DSUB9 jack of LMG Z318 with a 1 1 serial connection cable to LMGs COMa Connect the wall wart with power input of LMG Z318 Switch on the power meter and connect the LAN cable 6 5 7 Configure the LAN connection with the Realport setup wizard You will find the setup wizard on the ZES support CD under driver z318 or on the webpage http www zes com Start setup32 exe for 32 bit systems or setup64 exe for 64 bit systems Press next the wizard trys to find the ethernet adapter If it is not found press reset for about 3 seconds at the backside of the ethernet adapterbox to remove possible given prior IP address and wait for about 1 minute before searching again This is the most important point in the installation If the wizard still can not find the Z318 in your LAN please ask your system administrator before you contact the support hotline of ZES The support engineers of ZES will need a lot of detailed information about your local network to consult If the wizard found one or more devices choose the appropriate one and press next ZES ZIMMER 75 96 Sensors and Accessories for precision power meters Accessories e Take care that Z318 gets th
49. or input Figure 31 L45 Z22 4 2 1 VAN Safety warning Use only galvanic separating current sensors There is no potential separation in this adapter and in the LMG450 sensor input NOT FOR DIRECT CURRENT MEASUREMENT Please refer to chapter 1 1 Safety precautions 4 2 2 Specifications L45 Z22 is an accessory for the precision power meter LMG450 Its benefit is the usage of isolated custom current sensors with 1A output current e g current transducers or clamps with the LMG450 sensor input In comparison to the usage of the direct current inputs of the LMG450 the accessory L45 Z22 is optimized for the sensor output current of 1A and a dynamic range down to 31 25mA as full range Bandwidth DC to 20kHz Isolation NO ISOLATION NOT FOR DIRECT CURRENT MEASUREMENT Connection HD15 with EEPROM for LMG sensor input length about 80cm 4 2 3 Accuracy Accuracies based on sinusoidal current ambient temperature 23 3 C calibration interval 1 year The values are of measuring value of measuring range ZES ZIMMER 53 96 Sensors and Accessories for precision power meters LMG450 connection cables and adapter Frequency Hz DC to 45Hz 45Hz to 65Hz 45Hz to 5SkHz SkHz to 20kHz 0 05 0 05 0 05 0 05 0 1 0 1 0 25 0 25 Use L45 Z22 and LMG specifications to calculate the accuracy of the complete system 4 2 4 Connection of the sensor with LMG90 310 not possible 4 2 5 Connection of the sensor with LMG95 n
50. ot possible 4 2 6 Connection of the sensor with LMG450 4 2 7 Connection of the sensor with LMG500 not necessary because of good current dynamic range of LMG500 ZES ZIMMER 54 96 Sensors and Accessories for precision power meters LMGS00 connection cables and adapter 5 LMG500 connection cables and adapter 5 1 LMG500 current sensor adapter L50 Z14 Figure 32 L50 Z14 The special design of all LMG500 sensors makes them very easy and comfortable to use The HD15 SUB D plug contains the identification of the sensor type the measuring ranges including the needed scaling and several more parameters The LMGS500 reads this values and the meter will automatically 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 LMG500 sensors the Adapter L50 Z14 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 HD15 SUB D plug without galvanic separation The adapter L50 Z14 guarantees that no measuring leads are connected to the measuring channel at the same time and prevents electrical shock ZES ZIMMER 55 96 Sensors and Accessories for precision power meters Accessories 6 A
51. r To improve the operational reliability the usage of a surge arrester is recommended With a surge arrester meeting the requirements and placed behind the previously mentioned HV fuse overvoltages can be held below the maximum non repetitive peak voltages of the HST Possible suppliers of surge arresters are e TRIDELTA www tridelta de Medium voltage arrester Series SBK e SIEMENS www siemens com Medium voltage arrester Series 3EK7 Surge arrester selection criterias Ambient conditions Continuos operating voltage at installation point Temporary overvoltage at installation point Residual voltage against earth at possible impulse current max 8 8kV for HST3 max 16 8kV for HST6 max 23 8kV for HST9 max 30 2kV for HST12 ZES ZIMMER 89 96 Sensors and Accessories for precision power meters Voltage sensors ZES ZIMMER can not guarantee that the surge arresters of above mentioned suppliers are suitable for every purpose and application It is the responsibility of the user to find and install a surge arrester appropriate to the application ZES ZIMMER 90 96 Sensors and Accessories for precision power meters FAQ frequently asked questions Knowledge base 8 FAQ frequently asked questions Knowledge base 8 1 Example of an error calculation general derivation The calculations illustrate how to calculate the errors of U I or P when using an external sensor The following parameters of the measurement are
52. rms oe 71 aes ay ca 1 a a a be 1 input current ZES ZIMMER 36 96 Sensors and Accessories for precision power meters Current sensors bandwidth DC to 100kHz protection 600V CAT II class degree of 2 pollution temperature 0 C to 40 C range weight 100g output Security BNC cable and adapter connection 2 11 4 Connection of the sensor with LMG90 310 The use with LMG90 is not possible With LMG310 use Isensor external Shunt input 2 11 5 Connection of the sensor with LMG95 Use external Shunt input you get the following ranges all in A lohm on Soom max peak value 077m 1953m 3906m 7813m 1568 8 125 1625 023 regard maximum trms input current 2ohms regard maximum trms input current Sohms regard maximum trms input current 10ohms ZES ZIMMER 37 96 Sensors and Accessories for precision power meters Current sensors regard maximum trms input current 20ohms regard maximum trms input current 50ohms 1000hms 200o0hms 500ohms 1000ohms ZES ZIMMER 38 96 Sensors and Accessories for precision power meters Current sensors 2 11 6 Connection of the sensor with LMG450 The use with LMG450 is not possible 2 11 7 Connection of the sensor with LMG500 Use external sensor input you get the following ranges all in A lohm regard maximum trms input current 2ohms EMEN regard maximu
53. rom the test location without removing the sensors from the current path disconnect the HD15 plug from the LMG and connect all of the 15pins together with ground shield of the plug To do this the load current has to be switched off 2 7 4 Connection of the sensor with LMG90 310 The use with LMG90 and LMG310 is not possible 2 7 5 Connection of the sensor with LMG95 Use L95 Z07 internal supply via LMG and the Isensor external shunt input Set LMG current scaling factor appropriate to the scaling factor marked on the label on L95 Z07 2 7 6 Connection of the sensor with LMG450 Use sensor input you get the following ranges HALLSO ZES ZIMMER 24 96 Sensors and Accessories for precision power meters Current sensors HALL100 HALL200 2 7 7 Connection of the sensor with LMG500 Use L50 Z14 you get the following ranges HALLSO HALL100 HALL200 ZES ZIMMER 25 96 Sensors and Accessories for precision power meters Current sensors 2 8 Hall current sensors 300 500 1k 2kA L45 Z29 HALLxx DSUBDF i to supply unit en ye HDSUBISM 1m to LMG 15 6 Figure 15 Dimensions of the L45 Z29 HALL300 DSUBSF to supply unit HDSUB15M CI to LMG Figure 16 Dimensons of the L45 Z29 HALL500 DSUB9F ro H to supply unit 2m HDSUB15M to LMG Im Figure 17 Dimensions of the L45 Z29 HALL1000 I DSUBIF gH to supply unit HD
54. s Current sensors 2 9 Hall current sensors 300 500 1k 2kA L50 Z29 HALLxx j HDSUBI15 R to LMGSOO0 OQ O 1 4H m 25 SH He 44 4 a 67 3 15 65 Figure 19 Dimensions of the L50 Z29 Hall300 y HDSUB15 to LMG500 Ta we 255 g be Figure 20 Dimensons of the L50 Z29 Hall500 J HOSUBI5S to LM amp 500 Ji 455 110 ii I mEn 405 at 109 gi Figure 21 Dimensions of the L50 Z29 Hall1000 HOSUBIS to LMG500 152 205 205 60 5 52 129 eo es 150 10 Figure 22 Dimensions of the L50 Z29 Hall2000 ZES ZIMMER 30 96 Sensors and Accessories for precision power meters Current sensors 2 9 1 A A Safety warning Always connect the sensor first to the meter and afterwards to the device under test Connecting cable without savety isolation Avoid contact to hazardous voltage Do not overload any current sensor with more than the measurable TRMS value Please refer to chapter 1 1 Safety precautions
55. s connected in series to your device under test Oversized resistors may distort and take influence on the load current 2 12 3 Specifications Accuracy The specified accuracy is valid in combination with the LMG95 LMGS500 sensor input impedance of 100kOhm and the correct setting of the scaling ratio see table Accuracies based on sinusoidal current frequency 45 65 Hz ambient temperature 23 3 C calibration interval year The values are in of measuring value Use LMG SHxx P and LMG specifications to calculate the accuracy of the complete system nominal 1 2 5 10 20 50 100 200 resistance ohm ohms ohms ohms ohms ohms ohms ohms 1 00001 0 50001 0 20001 0 10001 0 05001 0 02001 0 01001 0 00501 ZES ZIMMER 41 96 Sensors and Accessories for precision power meters Current sensors input current for mApk mApk mApk mApk mApk mApk mApk mApk specified accuracy maximum trms 20A overload protection for max 1 minute input current overload bandwidth DC to 10kHz protection class 600V CAT III degree of 2 pollution temp range 0 C to 40 C weight 150g output Security BNC cable and adapter connection 2 12 4 Connection of the sensor with LMG90 310 The use with LMG90 is not possible With LMG310 use Isensor external Shunt input 2 12 5 Connection of the sensor with LMG95 Use external Shunt input you get the following ranges all in A lohm m max ms va
56. s indicated in this documentation when operating the product e Do not exceed the maximum specified voltage or current or use outside its measurement category e Always check the condition of the case and leads before use Never operate the unit if it has a damaged cord or plug if it is not working properly or if it has been dropped or damaged or dropped into water e Avoid severe impacts or rough handling that could damage the instrument Do not place any heavy object on the instrument e Keep the instruments away from water and other liquids e Use electrostatic discharge precautions while handling and making connections to the instrument e Do not block or obstruct the ventilation openings ZES ZIMMER 5 96 Sensors and Accessories for precision power meters Introduction e Use suitable connection cables Different current sensors have unique connection cables for each different precision power meter LMG For example the connection cable between PSU200 and LMG500 PSU200 K L50 is neither suitable for PSU600 nor for LMG450 e To avoid the risk of electrical shock do not disassemble or attempt to repair the unit Incorrect repair can cause risk of electrical shock or injury to persons when unit is used For all repairs please return the devices to your distributor or to ZES ZIMMER Electronic Systems e Do not touch energized circuits e The power meter with its voltage and current sensors is not designed to detect ha
57. s ne acess cen ee ER 81 7 1 Precision high voltage divider HST3 6 9 12 ee ceeeeesseceeneeeenneeeeneeenes 81 8 FAQ frequently asked questions Knowledge base 006 91 8 1 Example of an error calculation general derivation cee eeeeeeeeeeeeee 91 ZES ZIMMER 3 96 Sensors and Accessories for precision power meters 8 2 Example of an error calculation LMG500 with external shunt 95 8 3 Example of an error calculation LMG500 with HST3 eee eeees 96 ZES ZIMMER 4 96 Sensors and Accessories for precision power meters Introduction 1 Introduction 1 1 Safety precautions The following precautions are recommended to insure your safety and to provide the best conditions for the instruments e When using voltage or current transformers please regard the applicable safety standards earthing isolation e The installation of powermeter and current sensors may be accomplished only by trained technical personnel e When operating the powermeter current and voltage sensors certain parts can carry hazardous voltage e g primary busbar power supply Ignoring this warning can lead to injury and or cause serious damage e Read the user manual carefully and respect the safety precautions e Do not use these products in medical related or any other equipment that may have a potential effect on human lives e Always observe the operating conditions and environmental requirements a
58. sinusoidal current ambient temperature 23 3 C calibration interval 1 year conductor in the middle of the clamp The values are in of measuring value of measuring range current clamp and in phase error in degree Frequency Hz 2Hzto 10Hz to 45Hzto 65Hz to 1kHzto 2 5kHz 5kHz to 10Hz 45Hz 65Hz 1kHz 2 5kHz to5kHz 10kHz Use L45 Z16 and LMG specifications to calculate the accuracy of the complete system Influence of coupling mode This current clamp can transfer only AC currents The compensation circuit may cause a DC signal wich is interpreted by the instrument as a DC current This 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 6 4 Connection of the sensor with LMG90 310 The use with LMG90 and LMG310 is not possible 2 6 5 Connection of the sensor with LMG95 Use L95 Z07 internal supply via LMG and the Isensor external shunt input Set LMG current scaling factor appropriate to the scaling factor marked on the label on L95 Z07 ZES ZIMMER 21 96 Sensors and Accessories for precision power meters Current sensors 2 6 6 Connection of the sensor with LMG450 Use sensor input you get the following ranges 2 6 7 Connection of the sensor with LMG500 Use L50 Z14 you get the following ranges ZES ZIMMER 22 96 Sensors and Accessories for precision power meters Current sensors 2 7 Ha
59. sional Windows Vista see ZES support CD LMG500 USB driver e Linux driver is part of the kernel 2 4 x or newer ftdi_sio Modul e throughput up to 230 400 baud e supports data flow control with RTS CTS hardware reset with break ZES ZIMMER 79 96 Sensors and Accessories for precision power meters Accessories e adapter length about 1m standard RS232 DSUB9 male with UNC nuts and USB typ A plug e connection to LMG with standard 1 1 serial cable elongation possible up to 15m 6 6 3 RS232 plug DSUB9 male connector with UNC screw nuts pin assignment pinl CD carrier detect pin2 RX receive data pin3 TX transmit data pin4 DTR data terminal ready pin5 GND pin6 DSR dataset ready pin7 RTS request to send pins CTS clear to send pind RI ring indicator 6 6 4 Included in delivery e USB RS232 Adapter e DSUB9m to DSUB9f connection cable pin assignment 1 1 about 1 8m ZES ZIMMER 80 96 Sensors and Accessories for precision power meters Voltage sensors 7 Voltage sensors 7 1 Precision high voltage divider HST3 6 9 12 ON OFF SUPPLY OUT1 OUT2 OUT3 J ZIMI t l b 1 HE A ia cE Figure 50 precision high voltage divider HST12 3 7 1 1 VAN Safety warning The HST Series is not designed for working on medium voltage grids The normal use of the HST3 6 9 12 series needs a connection to high voltages To fulfill the safety requirements it
60. t sensors 2 11 Low current shunt LMG SHxx Figure 25 LMG SHxx 2 11 1 VAN Safety warning Always connect the sensor first to the meter and afterwards to the device under test Please regard that there is no isolation inside the Sensor therefore the instrument needs isolated inputs The Sensor is suitable for LMG95 LMG500 and LMG310 but not for LMG450 Please refer to chapter 1 1 Safety precautions 2 11 2 Selection of the resistance value Select an applicable shunt resistance according to the necessary load current range Values between 1 ohm and 1000 ohms are available But take into concern that this shunt resistance is connected in series to your device under test Oversized resistors may distort and take influence on the load current 2 11 3 Specifications Accuracy The specified accuracy is valid in combination with the LMG95 LMG500 sensor input impedance of 100kOhm and the correct setting of the scaling ratio see table Accuracies based on sinusoidal current frequency 45 65 Hz ambient temperature 23 3 C calibration interval year The values are in of measuring value Use LMG SHxx and LMG specifications to calculate the accuracy of the complete system nominal 1 2 5 10 20 50 100 200 500 1000 resistance ohm ohms ohms ohms ohms ohms ohms ohms ohms ohms 1 00001 0 50001 0 20001 0 10001 0 05001 0 02001 0 01001 0 00501 0 00201 0 00101 faccuracy 0 15 maximum t
61. tem Summary Digi Connect SP R5232 IP Addr 192 168 2 45 MAC Address 00 40 90 26 37 1F Figure 48 6 5 9 Troubleshooting The following problems may appear while installing the ethernet adapter If the problem remains after checking the following points please contact ZES at sales zes com or 49 6171 628750 e please check all connections supply RS232 LAN in case of LMG Z318 and LMGx COMa use 1 1 serial cable no nullmodem e connect the ethernet adapter to the power supply press reset wait for about 1 minute and try again e switch off your antivirus protection software the firewall may block the communication ZES ZIMMER 78 96 Sensors and Accessories for precision power meters Accessories 6 6 USB RS232 Adapter LMG Z316 to power meter LMG via 1 1 serial cable connect to PC Figure 49 LMG Z316 This USB RS232 adapter Z316 is useful for the communication with a power meter LMG and a PC with USB port via a virtual COM port simulation The communication is transmitted by the driver over USB to the adapter for user purposes in the same way as e g the direct connection of PC COMx to LMG COMa The power meter LMG will be accessible via this virtual COM port Perfect suitable for LMG Control software 6 6 1 A A Safety warning Please refer to chapter 1 1 Safety precautions 6 6 2 System requirements hardware specifications e Windows driver available for Windows XP home or profes
62. ulse outputs into analogue voltage This voltage can be analysed graphically with high temporal resolution by using sensor input of LMG450 Compared to this digital encoder input of process signal interface provides only one value each measuring cycle and with L45 Z18 you get a fast high dynamic response to changes in rotation speed 6 2 3 Description Incremental encoders speed sensors with TTL technology supply 5V and GND or HTL technology supply 5V and 5V can be connected There are four colour coded measuring ranges of the adapter to align with different pulse rates Z of the incremental encoder and maximum revolutions per minute Nmax Attention Read measuring value Idc only this presents exact speed values according to absolute value and sign depending on sense of rotation Positive output voltage is seen in case A signal leads electrically by 90 to B signal This equates usually to clockwise rotation when looking onto the encoder shaft ZES ZIMMER 63 96 Sensors and Accessories for precision power meters Accessories 6 2 4 Ripple As a matter of principle of frequency to voltage conversion there is a ripple at low revolution on output voltage Built in filters are optimised for short settling time without overshooting In case that remaining ripple is too high this can be reduced with the settings of LMG for example e Select adjustable lowpass filter in measuring channel e Extend the measuring cycle time e
63. ut current of each channel can be measured and has then to be returned to Ground ZES ZIMMER 59 96 Sensors and Accessories for precision power meters Accessories 6 1 4 Mounting 6 1 4 1 Rack mounting Fix the two rack mounting metal sheets with the four screws at the two sides of the SSU4 case Now you can mount it into any 19 rack 6 1 4 2 Instrument mounting You can mount the SSU4 directly under a LMG95 or LMG450 Please do this in following order e Switch off both instruments and remove all cables e Remove the four feets of the LMG450 or LMG95 case To do this just remove the four screws The nuts are fixed inside the LMG450 or LMG95 e Remove the four feets of the SSU4 case The four screws are mounted into the four screw nuts which are accessable from the top of the case Remove also this nuts e With the four M4x55 screws which are added you mount now the four feets of the SSU4 with following orientation LMG95 mount the front feets in the 2 position from the front plate mount the rear feets in the 2 position from the rear plate LMG450 mount the front feets in the position closest to the front plate mount the rear feets in the position closest to the rear plate In both cases The small white rubber on the feets has to be mounted in direction to the rear front plate The four screws are fixed into the nuts of the LMG450 LMG95 bottom where the original feeds were fixed
64. ve if input B is left open The output voltage is always positive if input B is tied to pin supply 5V 6 2 7 Scaling In range menu of LMG450 you can set the calculated scale value of the last line from above mentioned chart depending on the pulse rate Z per rotation of the used incremental encoder Then the revolution will be presented correctly in value 1 min on the display The unit will however be A or V Displayed 1 465kA means 1465 1 min For further user friendly presentation utilise capabilities of LMG450 built in formula editor and user defined menu 6 2 8 Pin assignment 9 pin D Sub connector male to incremental encoder Re I al Function Supply Supply GND Input A Input B No connection Screen 5V 5V on internal test pins on GND screen ZES ZIMMER 65 96 Sensors and Accessories for precision power meters Accessories 6 2 9 Pulse input A and B Permissible input voltage Ulowmin 30V at 1 4mA Ulowmax 0 8V at 0 001mA Uhighmin 2V at 0 002mA Uhighmax 30V at 1 2mA Input resistance 1Mohms at 0V lt Uin lt 5V 22kohms at 30V lt Uin lt 30V 6 2 10 Encoder supply Voltage 5V 10 Load max 100mA 6 2 11 Connection of the sensor with LMG90 310 95 not possible 6 2 12 Connection of the sensor with LMG450 Plug and use solution like current sensors Use current channel 6 2 13 Connection of the sensor with LMG500 not possible use L50 Z18 ZES ZIMMER 66 96 Sensors and Acc
65. voltage Please refer to chapter 1 1 Safety precautions 2 4 2 Specifications Nominal input current Me va Measuring range current clamp weg ZES ZIMMER 16 96 Sensors and Accessories for precision power meters Current sensors 2 4 3 Accuracy Accuracies based on sinusoidal current ambient temperature 23 3 C calibration interval 1 year conductor in the middle of the clamp The values are in of measuring value of measuring range current clamp and in phase error in degree Frequency 2Hz to 10Hz to 45Hz to 65Hz to 1kHz to 5kHz to 10kHz to 20kHz to 10Hz 45Hz 65Hz 1kHz 5kHz 10kHz 20kHz 40kHz Use L45 Z10 and LMG specifications to calculate the accuracy of the complete system Influence of coupling mode This current clamp can transfer only AC currents The compensation circuit may cause a DC signal wich is interpreted by the instrument as a DC current This 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 4 4 Connection of the sensor with LMG90 310 The use with LMG90 and LMG310 is not possible 2 4 5 Connection of the sensor with LMG95 Use L95 Z07 internal supply via LMG and the Isensor external shunt input Set LMG current scaling factor appropriate to the scaling factor marked on the label on L95 Z07 2 4 6 Connection of the sensor with LMG450 Use sensor input
66. y networks Urange 130V 200Vpk the remaining calculation is the same e Current measurement leff 4mA LMGS500 Irange 5mA 15 63mApk range spec see documentation of LMG SHxx LMGS500 I measuring accuracy 0 01 of measuring value 0 02 of measuring range e Power measurement PF 0 1 f 50Hz or 60Hz S 0 92VA P 92mW LMGS500 Prange Urange Irange 400V 15 63mA 6 252W LMG500 P measuring accuracy 0 015 of measuring value 0 01 of measuring range e Tolerance of current and power measurement Because the shunt tolerance is a purely scaling error without a term of measuring range the error analysis can be simplified to the following calculation shunt error term LMG error of meas value___ LMG error of meas range AI _ 0 15 100 4mA 0 01 100 4mA 0 02 100 15 63mA 6uA 0 4uA 3 126uA 9 526uA AP 0 15 100 92mW 0 015 100 92mW 0 01 100 6 252W 138uW 13 8uW 625 2uW 777uW ZES ZIMMER 95 96 Sensors and Accessories for precision power meters FAQ frequently asked questions Knowledge base 8 3 Example of an error calculation LMG500 with HST3 In this example an error calculation is shown with the LMG500 and HST3 measuring the loss power of a 3000V 10A 60Hz pure sinewave voltage and current PF 0 3 device under test e HST high voltage divider HST3 scale 1000 1 HST3 tolerance 0 05 0 06 45 65Hz Aphi_HST3 0 06 360 2 pi 0 001047197551 rad e Voltage measurement Ueff
67. you get the following ranges 2 4 7 Connection of the sensor with LMG500 Use L50 Z14 you get the following ranges ZES ZIMMER 17 96 Sensors and Accessories for precision power meters Current sensors 2 5 DC current clamp 1000A L45 Z26 Figure 9 L45 Z26 HDSUBISM a o LMG ope Figure 10 Dimensions of the L45 Z26 2 5 1 J Safety warning Always connect the sensor first to the meter and afterwards to the device under test Connecting cable without savety isolation Avoid contact to hazardous voltage Please refer to chapter 1 1 Safety precautions 2 5 2 Specifications Nominal input current 1000A Max trms value 1000A Measuring range 1500Apk Maximum input 1500A Bandwidth DC to 2kHz Protection class 600V CAT M ZES ZIMMER 18 96 Sensors and Accessories for precision power meters Current sensors HD15 with EEPROM for LMG sensor input 2 5 3 Accuracy Accuracies based on sinusoidal current ambient temperature 23 3 C calibration interval 1 year conductor in the middle of the clamp The accuracy is valid only with manual zero adjustment at the DC Clamp prior clamp on The values are in of measuring value of nominal input current phase in degree Current Amplitude error Phase error Phase error DC to 2kHz at 45 to 66Hz at 1kHz Use L45 Z26 and LMG specifications to calculate the accura
68. zards 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 instead of this instrument to detect dangerous situations 1 1 1 Terms and symbols These terms and symbols may appear in this manual or on the product Warning risk of danger Refer to the operating instructions before using the device In these operating instructions failure to follow or carry out instructions preceded by this symbol may result in personal injury or damage to the device Caution risk of electric shock Earth ground terminal Protective conductor terminal Equipment protected throughout by double insulation or reinforced insulation Application around and removal from hazardous live conductors is permitted Do not apply around or remove from hazardous live conductors ZES ZIMMER 6 96 Sensors and Accessories for precision power meters Introduction This symbol indicates that this product is to be collected separately This product is designated for separate collection at an appropriate collection point Do not dispose of as household waste For more information contact the retailer or the local authorities in charge of waste management 1 1 2 Definition of measurement categories Measurement category IV corresponds to measurements taken at the source of low voltage installations Measurement category III corresponds to measurements on buil

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