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Electric Power Engineering

What's the difference between live tank and dead tank circuit breakers? by tgott
Posted: 23 Jul 02

With live tank circuit breakers, the enclosure that houses the contacts is energized, ie. "live". Dead tank circuit breaker's contact enclosures are not energized and are connected to the ground grid. Live tank breakers are usually less expensive but you have to have separate current transformers.
See ABB http://abb.com/global/abbzh/abbzh251.nsf!OpenDatabase&db=/GLOBAL/ABBZH/ABBZH262.nsf&v=1C616&e=us&c=822916941B02F40741256A14004684D0
Use menu on left and select Circuit Breakers.   
See also
http://www.tde.alstom.com/Transmission/Pages/AirInsulatedSwitch.html



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