High Performance, Compact, Medium and High Voltage Transducers for Traction

High Performance, Compact, Medium and High Voltage Transducers for Traction

LEM introduces the DVM series for insulated nominal voltage measurements in traction applications. This family of devices spans the range from 600-4200 VRMS and incorporates LEM’s proven and patented insulating technology. Despite achieving very high levels of isolation with a safety insulation voltage of 12 kV, the DVM transducer is compact, measuring only 138 x 63.4 x 69 mm.

It is fully compatible and out-performs the previous generation of transducers in terms of functions and performance with new improved levels of accuracy and temperature stability, thus greatly simplifying retrofits.

DVM is also suitable for base mounting, but with slightly different outline dimensions to take into consideration for primary and secondary connections locations for example. The DVM is 30% smaller in height, occupies 25% less volume and is 56% lighter! The reduction in size does not compromise the DVM’s high immunity against the external surrounding perturbations or against the high voltage variations. The new size is also an advantage when confronted with size constraints in modern railway propulsion converters.

LEM developed the DVM to be fully compliant with the International Railway Industry Standards (IRIS), providing engineers in the railway industry, who are working with both rolling stock and sub-stations, with a versatile transducer that is equally applicable to measuring network voltages, or the main converter DC link on-board trains.

More information: LEM