Rectifier cabinet static breaker

Details Rectifier cabinet static breaker Rectifier cabinet static breaker

1990-05-30

1992-09-01

Gaffin, Jeffrey A.

Electrical transmission or interconnection systems

Plural load circuit systems

307 31, H02J 100

Patent

active

051441527

ABSTRACT:
A rectifier cabinet static breaker replaces a blocking diode pair with an SCR and the installation of a power transistor in parallel with the latch contactor to commutate the SCR to the off state. The SCR serves as a static breaker with fast turnoff capability providing an alternative way of achieving reactor scram in addition to performing the function of the replaced blocking diodes. The control circuitry for the rectifier cabinet static breaker includes on-line test capability and an LED indicator light to denote successful test completion. Current limit circuitry provides high-speed protection in the event of overload.

REFERENCES:
patent: 3153728 (1964-10-01), Procter
patent: 3337741 (1967-08-01), Mislan
patent: 3619635 (1971-11-01), Thompson et al.
patent: 3706921 (1972-12-01), Rosen
patent: 4637911 (1987-01-01), Bernard, Jr.
patent: 5006301 (1991-04-01), Lexa

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