Why Capacitor Should Be Off While Starting Generator

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mohsinhamid Commentator Join Date: May 2011 Posts: 91	Why Capacitor Should Be Off While Starting Generator 01/23/2012 5:14 AM
	psl some one help me.... Why capacitor bank should be turned off while starting the disel generators DG.....????
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PWSlack Guru Join Date: Jan 2007 Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on. Posts: 32175 Good Answers: 839	#1 Re: why capacitor shld be OFF while starting generator 01/23/2012 5:41 AM
	Er, to prevent the circuit protection devices upstream of them operating, perhaps? __________________ "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
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electricalexpert65 Guru Join Date: Oct 2009 Posts: 2061 Good Answers: 169	#2 Re: Why Capacitor Should Be Off While Starting Generator 01/23/2012 9:04 AM
	To avoid hunting of generator AVR To avoid failure of Surge Suppressor in the Rotating Rectifier To avoid failure of generator winding insulation
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parvathaneni Associate Join Date: Oct 2009 Location: INDIA Posts: 49 Good Answers: 1	#3 Re: Why Capacitor Should Be Off While Starting Generator 01/27/2012 5:27 AM
	During starting of gen set usually it is in no load, if the capacitors are connected stator MMF aid the rotor MMF are additive which leads to increase in voltage, now when the gen set is loaded Voltage drops drastically. In this condition AVR cant compensate the voltage drop with in the safe time limit. __________________ key questions why, what & how - just think
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sathish-47 Active Contributor Join Date: Jan 2012 Posts: 14	#4 Re: Why Capacitor Should Be Off While Starting Generator 03/04/2012 9:26 AM
	Capacitors should be kept in OFF condition because it acts as a load for Diesel gensets.Thats why DG sets are rated in KVA.While coming to Power plant alternators capacitors are switched ON to maintain P.F.
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