Choke for auxiliary supply as railway application

Datasheet as PDF

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 simultanously limits the commutation currents of the rectifier.

Solution

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

Technical data

Inductance: L >= 375 µH
Frequency: 50 Hz
Current: 400 A @ 50 Hz
            30 A @ 2850 Hz
Construction: open
Weight: 70 kg
Dimensions: 420 x 245 x330 mm
Terminals: free wires