Heat dissipation from ACB toes
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United States of America Patent
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Apr 24, 2018
Issued Date -
N/A
app pub date -
Oct 21, 2016
filing date -
Oct 21, 2015
priority date (Note) -
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Abstract
A heat dissipation apparatus, system and method for an air circuit breaker (ACB) switchgear has at least one pair of primary contact toes constructed and arranged to connect to a terminal of the circuit breaker. A bus bar joint is connected to the primary contact toes. The heat dissipation apparatus comprises an evaporator clamped to the primary contact toes. A condenser is located at a higher elevation than the evaporator and at least two electrically isolating pipes fluidly connect the evaporator with the condenser. A dielectric fluid in the evaporator can be heated to a vapor state, with one of the pipes transferring the vapor to the condenser and the second pipe returning the condensed dielectric fluid back to the evaporator for cooling the at least one pair of primary contact toes.
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