Electrical surge arrester/diverter having a heat shrink material

Details Electrical surge arrester/diverter having a heat shrink material Electrical surge arrester/diverter having a heat shrink material

1986-10-29

1989-07-25

Pellinen, A. D.

Electricity: electrical systems and devices

Safety and protection of systems and devices

High voltage dissipation

361127, H02H 904

Patent

active

048519553

ABSTRACT:
A distribution class surge arrester comprises a core formed of distributed zinc oxide varistor blocks, aluminum blocks acting as heat sinks and as spacers providing voltage grading and required arcing distances, and terminal blocks held in face-to-face contact by means of a glass reinforced epoxy shell which is formed by winding a pre-preg onto the assembled blocks and thermally curing under mold pressure within an evacuated mold. The core is housed within a polymeric shedded housing which is formed by shrinking a heat-shrink shedded sleeve onto the core with a sealant provided in the interface of the core and the sleeve, and end caps are sealed to the ends of the structure thus formed. The all solid-state arrester thus formed has performance and cost advantages over conventional procelain housed arresters and furthermore has very considerable physical strength enabling it to serve additionally as a stand-off support insulator in situations where conventionally separate arrester and support insulators were required.

REFERENCES:
patent: 3227983 (1966-01-01), Braun
patent: 4218721 (1980-08-01), Stetson
patent: 4276578 (1981-06-01), Levinson et al.
patent: 4404614 (1983-09-01), Koch et al.
patent: 4456942 (1984-06-01), Bronikowski
patent: 4476513 (1984-10-01), Stenstrom
patent: 4571660 (1986-02-01), Mitsumatsu et al.

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