Electric circuit breaker

Details Electric circuit breaker Electric circuit breaker

1981-09-11

1984-01-10

Moose, Jr., Harry E.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

H02H 308

Patent

active

044255969

ABSTRACT:
An electric circuit breaker including a current sensor composed of a Hall generator for detecting current overloads. Two secondary windings of a current transformer associated with the power line are connected to provide power to two separate power supply circuits. One circuit supplies power to a control circuit and the other circuit supplies control current to the Hall generator. The output voltage of the Hall generator is compared with a predetermined value in the control circuit. If a predetermined overload occurs, the control circuit energizes a trip coil for opening the power line.

REFERENCES:
patent: 2957109 (1960-10-01), White et al.
patent: 3343084 (1967-09-01), Gambale et al.
patent: 3558991 (1971-01-01), Brandt, Jr. et al.
patent: 3914667 (1975-10-01), Waldron
patent: 4156262 (1979-05-01), Eller et al.
"Improved Static Over-Current Relay with IDMT Characteristic"-Gudta et al., J. Inst. Eng. (India), vol. 53, p. EL 3 (2/73).

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