Patent ID: 8213133
Filing Date: 2012-07-03
Classification: H01H,H01L,Y02E

Abstract:
1. A load breaker arrangement, comprising: first and second input terminals configured to interface with a DC energy source at positive and negative poles thereof, respectively; first and second output terminals configured to interface with a DC side of an inverter circuit at positive and negative poles thereof, respectively; two relays connected in series with one another, wherein the two relays are coupled between the second input terminal and the second output terminal; a semiconductor switch connected in parallel with one of the two relays; a third relay coupled between the first input terminal and the first output terminal; and a control circuit configured to, in a load breaker mode, turn on the semiconductor switch while the two relays and the third relay are closed, then open the one of the two relays in parallel with the semiconductor switch, then open the semiconductor switch to break a current between the second input terminal and the second output terminal, and then open the other of the two relays not in parallel with the semiconductor switch and open the third relay.