Zero-current arc-suppression dc circuit breaker

Details Zero-current arc-suppression dc circuit breaker Zero-current arc-suppression dc circuit breaker

1986-08-05

1988-04-26

Scott, J. R.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Arc suppression at switching point

361 3, H02H 726

Patent

active

047408588

ABSTRACT:
A zero-current arc-suppression circuit breaker arrangement having a series circuit including a capacitor power source previously charged and a switch connected in parallel with a series circuit formed of a circuit breaker and a diode. Upon operation, the capacitor power source provides a reverse current for reducing the current flowing to the circuit breaker to a zero-current level and the diode maintains the circuit breaker current at the zero-current level for a predetermined period of time. When the contacts of the circuit breaker are separated during this period, no arc plasma is generated to protect the circuit breaker from damage.

REFERENCES:
patent: 3309570 (1967-03-01), Goldberg
patent: 3739192 (1973-06-01), Oswald
patent: 3758790 (1973-09-01), Kind et al.
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patent: 4172268 (1979-10-01), Yanabu et al.
patent: 4305107 (1981-12-01), Morano et al.
patent: 4442469 (1984-04-01), Yanabu et al.
patent: 4618905 (1986-10-01), Tokuyama et al.
patent: 4623948 (1986-11-01), Volut
patent: 4636906 (1987-01-01), Anderson et al.

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