High voltage current-limiting interrupter

Details High voltage current-limiting interrupter High voltage current-limiting interrupter

G - Physics

05

F

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G05F 1/10 (2006.01) H01H 9/54 (2006.01) H01H 33/59 (2006.01) H02H 7/22 (2006.01) H01H 33/14 (2006.01)

Patent

CA 1041603

ABSTRACT OF THE DISCLOSURE A circuit arrangement for the current-limiting inter- ruption of high-voltage direct and alternating currents in- cluding a commutation switch connected in the high-voltage main a residual current switch connected to the commutation switch and a shunt path connected in parallel with the com- mutation switch and including a temperature dependent resistor with a strongly positive temperature coefficient and a spark path connected in series with the resistor. The firing voltage of the spark path is such that the spark path responds after a predetermined arc voltage has been reached at the commutation switch to cause the current to commutate to the shunt path. - 1 -

226411

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