250W DC/DC converter for railway applications

7th March 2014
Nat Bowers

Suitable for supplying points, signal lamps and electronic monitoring of the rail net, MTM Power has introduced the HVC series 250W DC/DC converters for railway applications. The devices are available with an input range of 420-1100V dc (375-1125V dc for less than 2 seconds), isolation up to 8 kV ac and the standard output voltage of 24V dc.

With these high voltage converters it is possible to supply electronic equipment out of 600/750V contact wire. A key feature of the HVC250 is its use as a self starting module for trams or trolley buses with exhaustive discharged batteries so that the towing process can be avoided.

The rugged design and high-quality components guarantee high reliability in vehicles even under severe shock and vibration conditions. The high efficiency of greater than 88% and the dimensions of 330x170x87mm allow an operation without forced ventilation. Additionally, the HVC250 converters operate within an ambient temperature range from -40 to +85°C according to EN 50 155.

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