Closed-loop current transducer cuts costs

LEM has introduced the LA 306-S, a panel-mounted current transducer for the measurement of currents up to 400A RMS (at +70C) or 300A RMS (at +85C).

LEM has introduced the LA 306-S, a panel-mounted current transducer for the measurement of currents up to 400A RMS (at +70C) or 300A RMS (at +85C).

The unit offers the high performance of a closed-loop current transducer at a very competitive price.

The new transducer is only 56mm high.

It features a wide maximum bandwidth of DC to 50kHz and an overall accuracy of better than 0.7% at the primary nominal RMS current.

Typical linearity error is +/-0.1% at nominal current and the maximum offset temperature drift is 500uA from -40 to +85C.

The closed-loop Hall-effect technology results in no insertion losses and a fast response time of less than 1us.

The transducer's aperture accepts busbars up to 13 x 30mm.

Specified with 2000 turns as standard, it is also available with 5000, 4000 or 3000 turns on request.

A Molex 5045 plug is offered as standard for the secondary connections, to allow quick installation.

A Molex series 70543 connector can be specified for a more robust connection.

With an isolation test voltage of 6kVRMS/50Hz/1min, the transducer complies with the EN50178 industrial standard.

All materials used satisfy UL94V0.

The LA 306-S is CE marked and is supplied with a five-year warranty, as are all LEM industrial products.

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