Heat sinks for conductors in low voltage switchgear

Details Heat sinks for conductors in low voltage switchgear Heat sinks for conductors in low voltage switchgear

H - Electricity

02

B

H02B 13/00 (2006.01) H02B 1/21 (2006.01) H02B 1/56 (2006.01)

Patent

CA 2292216

Heat sinks extending rearward from and connected to the risers of a switchgear assembly by the same fasteners which secure the stabs to the risers dissipate the joule heat generated by current flow through the risers and stabs and accommodate for the higher temperature rise permitted in the power circuit breakers engaged by the stabs. The heat sinks are formed by a pair of heat sink members straddling the risers, each of which has an elongated flat body with an extended flat mounting surface on a first face which provides extended surface engagement with a stab. The elongated body projects rearward beyond the stab and a first set of transverse fins project from the first face rearward of the stab toward the first set of fins on the other heat sink member of the pair. A second or additional set of fins project laterally outward from a second face opposite the first face of the elongated body and are dimensioned to maintain appropriate through-air clearance with the additional fins on the heat sinks on an adjacent riser.

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