Patent ID: 9203398
Filing Date: 2015-12-01
Classification: H03K

Abstract:
1. A control device of a multi circuit load break switch, comprising: a first multiplexer configured to selectively provide an output signal according to a remote close signal or remote open signal; a field closing switch configured to provide the user with a means capable of selectively commanding a close operation of the multi circuit load break switch at a field; a field opening switch configured to provide the user with a means capable of selectively commanding an open operation of the multi circuit load break switch at a field; a second multiplexer connected to the field closing switch and field opening switch to selectively provide a field closing switch actuation signal of the field closing switch or a field opening switch actuation signal of the field opening switch selected by the user; a first exclusive-OR circuit unit connected to the first multiplexer and second multiplexer to output an open control signal indicating the open control of the multi circuit load break switch upon receiving only either one of the output signal according to the remote open signal from the first multiplexer and the field opening switch actuation signal from the second multiplexer; a second exclusive-OR circuit unit connected to the first multiplexer and second multiplexer to output a close control signal indicating the close control of the multi circuit load break switch upon receiving only either one of the output signal according to the remote close signal from the first multiplexer and the field closing switch actuation signal from the second multiplexer; an open command signal generation unit configured to generate and output an open command signal for commanding an open operation of the multi circuit load break switch; a close command signal generation unit configured to generate and output a close command signal for commanding a close operation of the multi circuit load break switch; a first photo coupler connected to the open command signal generation unit to provide an open state signal of the multi circuit load break switch to the open command signal generation unit to allow the open command signal generation unit to terminate the generating and outputting of the open command signal; and a second photo coupler connected to the close command signal generation unit to provide a close state signal of the multi circuit load break switch to the close command signal generation unit to allow the close command signal generation unit to terminate the generating and outputting of the close command signal.