Electricity: circuit makers and breakers – Interlocking – Between plural switches
Patent
1974-08-19
1977-03-15
Scott, James R.
Electricity: circuit makers and breakers
Interlocking
Between plural switches
174150, 200 48R, 361336, H01H 900, H02B 100, H01B 1706
Patent
active
040126099
ABSTRACT:
An improved circuit-interrupter is provided using rectangular bars for the power conductor assemblies, and having the material of the bars, and the number and thickness thereof, determine the current-rating capability of the equipment, for example, 1200 amperes, 2000 amperes or 3000 amperes, for example. Standoff insulating insulators, such as porcelain insulators, are preferably utilized for supporting the power conductor-assemblies, or power bus-bar assemblies, in spaced-apart relationship within the equipment.
The movable contact-bridging assembly comprises spaced conducting contact-blades with the number thereof, and material dependent upon the current rating of the device. The configuration of the contact blades, comprising the movable bridging contact assemblies, is preferably such that slight lateral width of the movable contact assembly is necessary, for accommodating the usual operating-rod when rotation of the movable assembly is desired to effect the movement thereof from the operating mechanism. Standardtype arc-chute assemblies may be consequently utilized, because of such reduced lateral width required for the aforesaid movable contact assembly, when the latter is rotated.
For supporting purposes, it is desirable, although not absolutely necessary, to utilize pairs of laterally-spaced standoff insulators to reduce the cost and quantity of insulating material required, having mounting bolts cast therein, to support the power conductor-assemblies, or bus-bar assemblies in spaced-apart relationship. More specifically, a set of spaced-apart standoff insulators may be utilized to space the lower power bus-bar conductor assembly away from the grounded metallic base of the respective pole-unit, and another set of standoff insulators between the lower and upper conductor assemblies to support the upper conductor.
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Crout W. R.
Scott James R.
Westinghouse Electric Corporation
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