Telescoping disconnect switch with low resistance center conduct

Details Telescoping disconnect switch with low resistance center conduct Telescoping disconnect switch with low resistance center conduct

1978-11-01

1980-02-12

Marcus, Stephen

Electricity: circuit makers and breakers

High-potential type

Rotating and pivoted

200269, 200279, 339 64R, H01H 104, H01H 106, H01H 5102

Patent

active

041885155

ABSTRACT:
An isolated phase bus disconnect switch has a cylindrical aluminum center conductor coaxially disposed within a cylindrical aluminum housing. The center conductor is composed of two fixed axially spaced sections and a coaxial telescoping sleeve assembly which moves axially to make and break electrical contact between the fixed sections. One end of each fixed section and both ends of the sleeve assembly have copper contact rings fixedly attached thereto. Adjoining surfaces of the copper-aluminum interfaces are silver plated, and each of the adjoining aluminum members is axially slotted to permit flexing to allow for differential thermal expansion, while at the same time preventing relative motion between the plated surfaces.

REFERENCES:
patent: 1968869 (1934-08-01), Austin
patent: 2229006 (1941-01-01), Rudd
patent: 2679567 (1954-05-01), Kradel
patent: 2841672 (1958-07-01), Hoye
patent: 3982806 (1976-09-01), Wilson et al.

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