Safeguarding electrical transient surge protection

Details Safeguarding electrical transient surge protection Safeguarding electrical transient surge protection

1988-04-22

1989-09-12

Jennings, Derek S.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Circuit interruption by thermal sensing

361 56, 361 91, 361117, 361119, H02H 320

Patent

active

048665606

ABSTRACT:
Electrical transient surge protection plus safeguarding of surge-protection apparatus against failure at high temperature. Thermally sensitive fusible devices are used in conjunction with voltage-limiting devices, specifically varistors, so as to protect watt-hour meters and downstream loads from electrical surges, and to safeguard such varistors from overheating and possibly failing. Such apparatus may be located in such diverse places as a power line weatherhead, a watt-hour meter base, an adapter between a meter base and its normal mounting socket, or a circuit-breaker panel downstream of the meter and upstream of electrical loads metered thereby.

REFERENCES:
patent: 4089032 (1978-05-01), Dell Orfano
patent: 4477857 (1984-10-01), Crocker
patent: 4527215 (1985-07-01), Wessing
patent: 4639820 (1987-01-01), Dolansky et al.
patent: 4641218 (1987-02-01), Scalera
patent: 4642723 (1987-02-01), Achtrig et al.
patent: 4723190 (1988-02-01), Chung
patent: 4736269 (1988-04-01), Amein et al.

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