Sectionalizer

Details Sectionalizer Sectionalizer

1983-05-25

1985-11-12

Moose, Jr., Harry E.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific circuit breaker or control structure

361 71, 361 93, H02H 307

Patent

active

045531889

ABSTRACT:
A method of isolating a spur line of an electrical power system protected by a multi-shot resetting circuit breaker wherein at least two successive current surges in the spur line which activate the circuit breakers are detected. In response to the detection the spur line is isolated during a subsequent current dead period.
A sectionalizer is described for isolating a spur line of an electrical power system protected by a multi-shot resetting circuit breaker. The sectionalizer comprises a metal casing 22 providing a current path across a fuse mounting 10 while the sectionalizer is in a conducting position. An electrical circuit 23 inside the tube detects at least two successive current surges in the casing and during the following dead period actuates a chemical actuator 14 to trip the sectionalizer out of its conducting position.

REFERENCES:
patent: 1954849 (1934-04-01), Seese
patent: 1982986 (1934-12-01), Garlington
patent: 2053445 (1936-09-01), Rose
patent: 3418529 (1968-12-01), Attewell
patent: 3818275 (1974-06-01), Shimp
"Autoreclose-Circuit Design for Large Substations Using Logic Sequence Switching", Published in the Proceedings of the IEE in Dec. 1967.

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