Surge voltage protector for use in power transmission networks

Details Surge voltage protector for use in power transmission networks Surge voltage protector for use in power transmission networks

2006-10-10

2006-10-10

Jackson, Stephen W. (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific voltage responsive fault sensor

C361S117000, C361S124000, C361S125000, C361S126000, C361S127000

Reexamination Certificate

active

07120001

ABSTRACT:
The invention relates to a surge voltage protector (1) which comprises a discharge current path with at least one varistor block (4a,4b,4c). In order to prevent the varistor blocks (4a,4b,4c) from bursting when an inner error is produced and an electric arc connected thereto is created, a coating (9, 9a,9b,9c) is applied in the region of the outer covering area of at least one varistor block (4a,4b,4c), said coating being made of a substance which triggers an electric flashover when a critical temperature of the varistor blocks (4a,4b,4c) is exceeded.

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patent: 6614640 (2003-09-01), Richter et al.
patent: 6778374 (2004-08-01), Berlovan et al.
patent: 0335480 (1989-01-01), None

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