Current limiting circuit breaker system

Details Current limiting circuit breaker system Current limiting circuit breaker system

1974-04-09

1976-01-13

Harris, G.

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Automatic circuit-interrupting devices

335 10, 317119, H01H 7702

Patent

active

039328252

ABSTRACT:
Circuit-breaker system having a response time to shortcircuits of less than 4 milliseconds have multiple coordinated pole units wired in series in each phase. The system is able to clear a fault where the available current is high, for example 100,000 amperes at 240 volts AC although each pole unit may be of conventional construction having a current-interruption rating of only 5 or 10 thousand amperes. The operation exhibits current limiting properties, and the interruption process leaves the pole units remarkably free of arc damage.

REFERENCES:
patent: 3187147 (1965-06-01), Dietz et al.
patent: 3218519 (1965-11-01), Casey
patent: 3333157 (1967-07-01), Stokes
patent: 3349290 (1967-10-01), Casey
patent: 3573415 (1971-04-01), Gryctko
patent: 3745415 (1973-07-01), Polley et al.

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