Break-jaw construction for a disconnecting switch structure

Details Break-jaw construction for a disconnecting switch structure Break-jaw construction for a disconnecting switch structure

1980-12-15

1983-04-12

Shepperd, John W.

Electricity: circuit makers and breakers

High-potential type

Rotating and pivoted

200 48KB, H01H 3130, H01H 142

Patent

active

043799566

ABSTRACT:
An improved switch-jaw construction is provided for a disconnecting switch having a tie-rod assembly interconnecting the free ends of the confronting switch jaw contacts. The tie-rod assembly includes preferably a metallic tubular member having its outer interior surfaces threaded to accommodate mounting bolts and the tie-rod assembly passes through apertures provided adjacent the free ends of the inwardly-turned switch-jaw contacts. Preferably mounting bolts are threaded into the interior threads of the tubular tie-rod within insulating bushings to prevent current flow into the tie-rod assembly, which would otherwise heat the compression springs and thereby cause them to loose their temper. As a result, lateral movement of the switch-blade pushing on either jaw contact, caused by the electromagnetic forces involved, or high wind loads or seismic loads will correspondingly carry the opposed jaw contact with the first-mentioned jaw contact thus maintaining constant good-contacting engagement between the movable switch-blade and the interior faces of the switch-jaw contacts.

REFERENCES:
patent: 2610276 (1952-09-01), Bayer
patent: 2673902 (1954-03-01), Heberlein
patent: 2741672 (1956-04-01), Harrison
patent: 3182145 (1965-05-01), Gorman
patent: 3493700 (1970-02-01), McKinnon

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