Apparatus for the current limiting interruption of currents at h

Details Apparatus for the current limiting interruption of currents at h Apparatus for the current limiting interruption of currents at h

1975-05-09

1977-01-25

Miller, J. D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307135, 307136, 317 11C, 317 11E, H02H 722

Patent

active

040053407

ABSTRACT:
A circuit arrangement for the current-limiting interruption of high-voltage direct and alternating currents including 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 commutation 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.

REFERENCES:
patent: 3249810 (1966-05-01), Strom et al.
patent: 3454831 (1969-07-01), Willard
patent: 3737724 (1973-06-01), Salge et al.
patent: 3758790 (1973-09-01), Kind et al.
patent: 3809959 (1974-05-01), Pucher

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