H - Electricity – 01 – H
Patent
H - Electricity
01
H
306/354
H01H 85/20 (2006.01) H01H 85/43 (2006.01) H01H 85/00 (2006.01)
Patent
CA 1330821
ABSTRACT A rain shield for a circuit-interrupting device is provided that includes a housing for attachment to the circuit interrupter adja- cent an exhaust outlet of the circuit interrupter. The rain shield prevents the ingress of moisture while providing a path for the exhaust gases of the circuit interrupter. The rain shield is selectively attach- able to the circuit interrupter and is reusable. In one arrangement, the rain shield includes a housing which is generally cylindrical and has an inlet opening at a first end for cooperation with the exhaust outlet of the circuit interrupter. At a second opposite end of the housing, an outlet is defined that includes a predetermined pattern of openings. A centrally disposed plate is provided adjacent the outlet and functions as a drip cap. The drip cap is dimensioned in accordance with the predeter- mined pattern of openings in the outlet, such that moisture in the form of precipitation that enters the outlet of the rain shield is prevented from entering the inlet opening adjacent the circuit interrupter. When the circuit interrupter is in an inverted position, precipitation that directly enters the openings in the outlet of the rain shield are collected in a reservoir area of the housing. The reservoir in one particular configuration is formed between an inner wall that defines the inlet opening and an outer wall of the housing. Drain holes are provided through the outer wall of the housing that communicate with the reservoir such that water accumulating in the reservoir is drained from the inverted rain shield. In the preferred arrangement, the housing of the rain shield cooperates with an attachment fitting at the exhaust end of the circuit interrupter such that the rain shield must be assembled to the circuit interrupter and the attachment fitting as a final assembly before the circuit interrupter can be retained within a mounting.
603454
Osler Hoskin & Harcourt Llp
S&c Electric Company
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