Patent ID: 9641220
Date: 2017-05-02
CPC Classifications: H02J,H04B,Y02B,Y02E,Y04S

Claim:
1. A relay for control of a network protector located on a low voltage side of a transformer with a set of three phases: the relay having a set of at least one input port to receive power from at least one of the set of three phases on a network side of the network protectors, wherein power provided from the network side of the network protector is available for operation of the relay; and the relay providing power to a communication device that communicates information about the transformer and the network protector to a remote location; wherein the improvement comprises: at least one route for power to be provided to the relay from at least one of the set of three phases taken from a power source side of the network protector so that the relay has power and is functional before the network protector is closed to provide power into a dead network; the at least one route for power including a voltage reduction unit to reduce a voltage of power received from the power source side of the network protector; wherein the voltage reduction unit is turned off by a network voltage detector upon detecting that at least one phase on the network side of the network protector is energized; and the communication device transmits information from the relay connected to the dead network before any network protector is closed.