H - Electricity – 02 – H
Patent
H - Electricity
02
H
H02H 7/08 (2006.01) H02H 3/00 (2006.01) H02H 3/04 (2006.01) H02H 3/093 (2006.01)
Patent
CA 2168838
An electrical switch with ovecurrent protection communicates as a slave with a remote master station by sending return messages to the remote master station only in response to messages addressed to it. A portable unit plugs into the electrical switch and disables communications between the electrical switch and the remote master station. The portable unit then establishes communications with the electrical switch by sending a global message to the electrical switch requesting the unique address at successive baud rates until a return message containing the electrical switches' address is received. A communications module in the electrical switch transfers to a master mode in response to the global message in order to send the return message, containing its unique address. It then reverts to the slave mode for response to subsequent messages from the portable unit containing the unique address. Either the remote master station or the portable unit can test the circuit breaker by sending a message containing a digital test current to the circuit breaker.
Boccabella Michael F.
Engel Joseph C.
Johnson Richard A.
Oravetz David M.
Wise James I.
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Corporation Eaton
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