Lightning arrestor

Details Lightning arrestor Lightning arrestor

1979-12-17

1981-09-08

Salce, Patrick R.

Electricity: electrical systems and devices

Safety and protection of systems and devices

High voltage dissipation

361105, 361 56, 338 21, 337 16, 337 28, H02H 904

Patent

active

042888336

ABSTRACT:
A metal oxide varistor (MOV) is directly electrically connected between a line conductor and ground to dissipate the energy associated with voltage surges appearing on the line conductor. A thermostatic switch, in the form of a resilient arm held in electrical connection with one of the MOV electrodes by low melting point solder, opens in response to a failing MOV to insert a spark gap electrically in series with the MOV. Overvoltage protection is thus maintained, albeit limited to higher level voltage surges.

REFERENCES:
patent: 2839635 (1958-06-01), Hasselhorn
patent: 3805022 (1974-04-01), Kulwicki et al.
patent: 3889222 (1975-06-01), Takano et al.
patent: 4015228 (1977-03-01), Eda et al.
patent: 4068277 (1978-01-01), Simokat
patent: 4168514 (1979-09-01), Howell

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