bus coupler

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Anonymous Poster	bus coupler 04/01/2009 4:34 AM
	under normal condition why a bus coupler protection is switched off
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Crabtree Guru Join Date: Jul 2007 Location: Commissariat de Police, Nouvions, occupied France, 1942. Posts: 2599 Good Answers: 77	#1 Re: bus coupler 04/01/2009 6:27 AM
	Your guess is as good as anyone else's, Boss, until some more information is available. __________________ Good moaning!
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edignan Guru Join Date: Jun 2006 Location: Borrego Springs Posts: 2636 Good Answers: 62	#2 Re: bus coupler 04/01/2009 9:06 AM
	In my world, a bus coupler doesn't have a switch. Or power. Or any active components. __________________ "If you want to get somewhere else, you must run at least twice as fast as that!"
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V.I.Abraham Guru Join Date: May 2007 Location: Pune , India Posts: 875 Good Answers: 42	#3 Re: bus coupler 04/02/2009 12:54 PM
	Hi Guest , Bus coupler is normally used as stand by system for immediate changeover in case of failure of one of the incoming feeders. In case if two or more incomers are feeding supply to either side of the bus coupler ,the incomer and outgoing feeders are kept normally on and the bus coupler breaker remain switched off and the load is fed directly to the outgoing feeders. In case of failure of any incomer the faulty incomer is switched off and bus coupler is switched on to provide power to all the the outgoing feeders. This also help in case of planned maintenance shutdown of either incoming feeders with out effecting power outage to the load centers.
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Crabtree (1); edignan (1); V.I.Abraham (1)

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