Sensors and Accessories
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ZES Sensors and Accessories for precision power meters LMG series 90/310/95/450/500

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...

Sensors and Accessories for precision power meters

Sensors and Accessories for precision power meters

Sensors and Accessories for precision power meters

Introduction Safety precautions The following precautions are recommended to insure your safety and to provide the best conditions for the instruments. • When using voltage or current transformers please regard the applicable safety standards (earthing, isolation, ...)! • The installation of powermeter and current sensors may be accomplished only by trained technical personnel! • 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. •...

• 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. • 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. • Do not touch energized circuits. • The power meter with...

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. 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 building installations. • Measurement category II corresponds to measurements taken on circuits...

Selection table - current sensors Sensor name lower upper corner corner freq. freq. basic accuracy current range primary connection general purpose general purpose general purpose general purpose frequency inverter output frequency inverter output frequency inverter output the only clamp on solution for DC applications 50Hz power quality, very flexible clamp on 50Hz power quality, very flexible clamp on 50Hz power quality, very flexible clamp on feed through high current, no DC, very high precision feed through high current, no DC, very high precision feed through high current, no DC, high...

Sensor name lower upper corner corner freq. freq. basic accuracy current range primary connection feed through high current, no DC, high precision feed through high current, no DC, high precision feed through high current, no DC, high precision feed through high current, no DC, high precision, for huge primary busbars feed through high current, no DC, high precision, for huge primary busbars Precision current transducer PCT200 feed through applications with DC current, extremely high precision, high bandwidth, specification at full frequency range feed through applications with DC current,...

Sensor name lower upper corner corner freq. freq. basic accuracy current range primary connection feed through applications with DC current, high precision feed through applications with DC current, high precision Current transducer Hall L45-Z28Hall50 feed through frequency inverter output, frequency inverter DC link, low cost feed through frequency inverter output, frequency inverter DC link, low cost feed through frequency inverter output, frequency inverter DC link, low cost feed through frequency inverter output, frequency inverter DC link, low cost feed through frequency inverter...

Sensor name lower upper corner corner freq. freq. basic accuracy current range primary connection summing current transducer, lighting applications, ultrasonic High frequency sensors L95-Z06 L95-Z06HV feed through very high frequency applications, avionics, ultrasonic External shunt, low current LMGSHxx 50Hz standby current, overload protection 20A for 1 minute primary connection Selection table - voltage sensors Sensor name lower upper corner corner freq. freq. basic accuracy voltage range High voltage divider HST HST3 volt. lead general purpose volt. lead general purpose volt. lead...

Advantages and disadvantages of different current sensor types This section should give you a help to choose the best sensor for your application. First of all you should know that the exactest measurement you can do is to use the direct inputs of the meter. The errors of the phase shift and the delay of the channels are optimised for a precise power measurement. If you must use an external sensor you should know the following points about the different kinds of the sensors: Precision current transducer PCT • extremely high DC accuracy, best linearity • extremely high accuracy at 50/60Hz •...

• easy to use, the sensor can be clamped on the circuit to be measured without interrupting the circuit • medium bandwidth, high accuracy, no DC measurement Precision current transformers Z5xx: • very high accuracy • the circuit to be measured has to be opened and then connected to the transformer • small bandwidth, no DC measurement Current transducer Hall: • low cost • medium to high bandwidth, medium accuracy, low DC measurement accuracy • the circuit to be measured has to be opened to mount the Hall sensor Current transducer PSU: • very high DC accuracy, excellent linearity • very high...