CPC H02H 3/025 (2013.01) [H02H 7/22 (2013.01)] | 15 Claims |
1. A method of operating a Fault Current Limiter Circuit Breaker, FLCB, comprising a plurality of FLCB modules connected in series, including at least a first module and a second module, each module including a plurality of parallel component legs comprising:
a mechanical switch leg comprising a mechanical switch;
a semiconductor switch leg comprising a semiconductor switch; and
a Metal Oxide Varistor, MOV, leg including a MOV;
the method comprising:
when the FLCB is in an open configuration, obtaining an indication that the FLCB should be closed;
in response to the obtained indication, closing the semiconductor switch of each of the modules; and
after the closing of the semiconductor switches and while the mechanical switch of the second module remains open, closing the mechanical switch of the first module.
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