Choke for auxiliary supply as railway application

Datasheet as PDF

Choke for auxiliary supply as railway application

BV 2937006b

Customer’s demand

For auxiliary supply for railway application we are in need of a choke which is arranged at the input of an inverter. The device should be connected between a high-voltage transformer and an input rectifier. The choke needs a construction that makes it work as a “booster choke” and simultaneously limits the commutation currents of the rectifier.


A space saving construction makes it possible to redeem the limited requirements to space as well as the electrical requirements. The core is a thin tape magnetic core with optimisation for the air gap. The windings have low skin- and proximity losses.

Technical data

Inductance: L >= 375 µH
Frequency: 50 Hz
400 A @ 50 Hz
30 A @ 2850 Hz
Construction: open
Weight: 70 kg
Dimensions: 420 x 245 x 330 mm
Terminals: free wires

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