Tuesday, October 09, 2012

The first compact DC, Class 1 accurate voltage transducer for the traction market.

LEM introduces the DV series voltage transducer for insulated voltage measurements from 1200-4200 VRMS. Featuring LEM’s patented insulating technology, the DV transducer is significantly smaller than any equivalent product on the market today, measuring only 134 x 54.22 x 147.25mm.

The DV has been developed and is produced according to International Railway Industry Standards (IRIS). Engineers in the railway industry (including rolling stock and sub-stations) now have a new transducer for measuring network voltages and the train main converters’ DC link. The product is also well adapted for the industrial markets for high and medium voltage measurements.

With a low current consumption of 19-23 mA, a large frequency bandwidth of 12 kHz, and safety insulation voltage of 18.5 kV, LEM’s DV voltage transducer meets the demands of modern rail systems and fulfils all new EMC requirements. Other key features include a high level of partial discharge extinction voltage, adherence to safety standards, high quality and long life, together with low weight and flexible mechanical and electrical output to adapt to customer needs.

The trend in the railway market is to save space and improve performances. On the other hand, the latest standards make increasing requirements for higher insulation and partial discharge extinction levels in order to guarantee safety, as well as better immunity against external electrical, magnetic and electromagnetic fields for EMC protection. The DV has been designed to meet both these conflicting demands.

The DV is Class 1 certified and therefore ideal for applications such as energy metering. The materials utilized comply with the fire and smoke requirements, which are mandatory in railway applications. The DV is CE marked and is supplied with a five-year warranty, as are all LEM railway products.

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