Protective relay circuit for interphase faults

Details Protective relay circuit for interphase faults Protective relay circuit for interphase faults

1977-02-10

1978-05-23

Salce, Patrick R.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With phase sequence network analyzer

361 79, 361 86, H02H 326

Patent

active

040914330

ABSTRACT:
This protective relay circuit responds to interphase faults on a three-phase power line by causing a circuit breaker connected in the power line to be tripped three-pole in response to interphase faults, but does not respond to a single line to ground fault, allowing a single pole to be tripped for this latter type of fault.

REFERENCES:
patent: 2406411 (1946-08-01), Sonnemann
patent: 3626281 (1971-12-01), Souillard
"Single Pole Switching on TVA's Paradise Davidson 500-KV Line" by L. Edwards et al., IEEE Transactions on Power Apparatus and Systems, vol. 90, pp. 2436-2450, Jul.-Dec. 1971.

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