H - Electricity – 02 – B
Patent
H - Electricity
02
B
H02B 1/20 (2006.01)
Patent
CA 2289252
Hollow risers in switchgear are preferably formed by a confronting pair of spaced apart U-channels. Stab conductors for connecting switching apparatus in the switchgear to the risers have a pair of flat members straddling and secured to the two U-channels by mounts which include backing plates bearing against the inner surfaces of the confronting legs of two U-channels and bolts extending through the stab conductors and U-channel legs and engaging threaded apertures in the backing plates. To accommodate a range of current ratings, the confronting channels can have first and second leg thicknesses t1 and t2, which can be different but the outer widths, w, of the channels are all the same. The backing plates have a first surface with a third thickness t3 in one section and a fourth thickness t4 in a second section. This first surface bears against the U-channel legs when the legs are of different thicknesses and t1 plus t3 is made equal to t2 plus t4. The second face of each backing plate is planar and bears against the inner surface of the legs of the U-channels when t1 is equal to t2.
Bruner Rodney William
Wilkie William E. II
Bereskin & Parr
Corporation Eaton
LandOfFree
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