Fuse well and housing for pad-mounted, double fused switchgear

Details Fuse well and housing for pad-mounted, double fused switchgear Fuse well and housing for pad-mounted, double fused switchgear

1986-08-26

1987-08-18

Macon, Robert S.

Electricity: electrical systems and devices

Electrostatic capacitors

Fixed capacitor

361 41, H02B 500, H02H 704

Patent

active

046881433

ABSTRACT:
An improved, lowcost double-fused vacuum switchgear apparatus designed for underground electrical distribution systems is provided which makes use of a specially configured oil tank-defining wall and insulative protective fuse well sleeves to give enhanced protection to workmen performing unauthorized energized servicing of the unit, while also using a minimum of dielectric oil and separate wall components. The preferred tank includes an oblique sidewall eliminating unnecessary oil space in the tank, while each fuse well is equipped with an insulative sleeve which guides fuse removal and installation and largely prevents short-circuiting even during energized servicing. The fuse assembly preferably includes a current-limiting fuse and a series-coupled expulsion fuse, the latter being oriented in the wells for directing conductive arcing gases downwardly and away from the switchgear components.

REFERENCES:
patent: 2736598 (1956-02-01), Laffey
patent: 3078001 (1963-02-01), Young et al.
patent: 3340441 (1967-09-01), Probert
patent: 3522404 (1970-08-01), Trayer
patent: 3699490 (1972-10-01), Macemon
patent: 3792215 (1974-02-01), Keto
patent: 3863187 (1975-01-01), Mahieu et al.
patent: 4083028 (1978-04-01), Haubein et al.
patent: 4170000 (1979-10-01), Trayer
Trayer Engineering Corporation Drawings--Pad-mounted Vacuum Switchgear--3/1/1978.

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