H - Electricity – 02 – B
Patent
H - Electricity
02
B
306/272
H02B 11/04 (2006.01)
Patent
CA 1222538
49,366 ABSTRACT OF THE DISCLOSURE A circuit breaker switchgear housing device hav- ing a stab positioning system whereby a draw-out circuit breaker having separable contacts is contained in the switchgear housing. A stab positioning system is utilized so as to precisely locate stabs so that a circuit breaker having contact clusters which are electrically attached to the circuit breaker contacts make accurate and uniform contact with the stabs. The stabs are generally a rec- tangular-shaped bar with one of the ends being rounded off. Cut into two sides of the stab and opposing each other are notches. The stab is inserted into a retainer or positioning washer which has a bayonet-type lock open- ing into which the stab is inserted and rotated 90°, thereby prohibiting axial movement of the stab with re- spect to the washer. A retainer or positioning washer having an opening slightly larger than the stab cross- section is used to rigidly position an inserted stab, prohibiting rotational movement with respect to the open- ing in the stab. An insulating partition which is rigidly attached to the switchgear housing, facilitates the posi- tioning and attachment of the two positioning washers containing the stab. The positioning washers are separ- ated by a ledge contained in the insulating partition.
396742
Ciccotelli Stephen S.
Merola Carl R.
Zwillich Alexander
Oldham And Company
Westinghouse Electric Corporation
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