Importance

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Abstract

System and apparatus for electrically coupling a microgrid to and from a power distribution grid. In one embodiment, the apparatus comprises an interconnect device, coupled to the microgrid and the power distribution grid, comprising (i) an overcurrent protection component (OPC) for interrupting a circuit during an overcurrent condition; and (2) a contactor component, coupled in series with the OPC and independently operable from the OPC, comprising (a) a set of contacts movable between a first position and a second position; (b) a first coil energizable to move the set of contacts from the first position into the second position; and (c) a second coil energizable, independently of the first coil, to maintain the contacts in the second position after the first coil is de-energized until a level of current flowing through the set of contacts is less than a lower current level.

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First Claim