Transient voltage suppression system

Details Transient voltage suppression system Transient voltage suppression system

1977-06-27

1979-05-01

Moose, Jr., Harry E.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Load shunting by fault responsive means

361111, H02H 904

Patent

active

041527437

ABSTRACT:
A transient voltage suppression system for use in an electrical power distribution system which includes at least one power line and a neutral or ground line. The system includes a suppression circuit for each power line of the power distribution system, with each suppression circuit being coupled between a corresponding power line and the neutral or ground line. Each suppression circuit includes a first metal oxide varistor coupled in series with a switching resistor and thermally coupled thereto, and a second metal oxide varistor coupled in parallel with the series connection of the first metal oxide varistor and switching resistor. The breakdown voltage rating of the second metal oxide varistor is greater than that of the first metal oxide varistor. A capacitor is coupled in parallel with the second metal oxide varistor. Coupled between each suppression circuit and a corresponding power line is a fuse for protecting the components of the circuits from current surges.

REFERENCES:
patent: 3546572 (1970-12-01), Specht et al.
patent: 3660719 (1972-05-01), Grenier
patent: 4023071 (1977-05-01), Fussell
patent: 4068279 (1978-01-01), Byrnes

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