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Unread 11-12-2005, 09:20
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Al Skierkiewicz Al Skierkiewicz is offline
Broadcast Eng/Chief Robot Inspector
AKA: Big Al WFFA 2005
FRC #0111 (WildStang)
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Re: in need of another 40A

Quote:
Originally Posted by lukevanoort
That makes sense. I wonder if muffin fans or another cooling method directed at or near the breaker panel would help? Or watercooling using the water from this year's water game.
I have seen teams use a variety of ways to cool the breakers, from fans to cool spray right before a match. The thing to remember is the metal inside the sealed breaker is at temperature and there is very little thermal conduction to/from the case. I should point out that breakers that trip under load (motors) will arc at the contacts. Over time, repetitive trips cause pitting and therefore high resistance which just adds to the heating problem. Not to mention the role of the arc in local heating of the contact area.
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Al
WB9UVJ
www.wildstang.org
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Storming the Tower since 1996.