Product category:
Hardware
News Release from: LEM Instruments | Subject: LEM current transducer
Edited by the Buildingtalk Editorial
Team on 02 March 2007
Cost-effective current transducer
LEM introduces cost-effective current transducer for currents up to 350ARMS in railway applications.
LEM has introduced the LAC 300-S, a panel-mounted current transducer for the measurement of currents up to 350ARMS This new closed-loop Hall-effect transducer has been designed for use in railway applications such as propulsion inverters
This article was originally published on Buildingtalk on 22 Jul 2005 at 8.00am (UK)
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It is also well suited to auxiliary inverter requirements (used for air conditioning, battery chargers...), thanks to its attractive price and high performance level.
This new transducer is only 56 mm high.
It features a wide maximum bandwidth of DC to 50kHz and an overall accuracy of better than +/-0.7 per cent at a primary nominal RMS current of 350A.
Typical linearity error is +/-0.1 per cent at 350A and the maximum offset temperature drift is 500 microamps from -40 to +85degC.
The closed-loop Hall-effect technology results in no insertion losses and a fast response time of less than 1 microsecond.
The transducer's aperture accepts busbars up to 13 x 30mm.
A Molex series 70543 plug is offered as standard for the secondary connections, for a robust connection and quick installation.
With an isolation test voltage of 6kVRMS/50Hz/1min, the transducer complies with the European EN50155 and EN50124-1 traction standards (insulation levels, creepage and clearance distances).
All materials used satisfy UL94-V0 and comply with the smoke and fire classification requirements for the traction industry (NFF 16101 and 16102).
The LAC 300-S is CE marked and is supplied with a five-year warranty, as are all LEM railway products.
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