How to Calculate Transformer Losses

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Sadanand Jadaye Active Contributor Join Date: Nov 2008 Posts: 13	How to Calculate Transformer Losses 11/29/2012 11:01 PM
	Dear All, I have a distribution trasformer - 500 KVA, 22000/433 Volts, ONAN, Dyn11, Impedance = 4.97, Delta/Star connected. Its resistance values are - RY= 10.21 Ohms, YB = 10.26 Ohms, BR = 10.27 Ohms, ry = 6.35 mOhms, yb = 6.37 mOhms and br = 6.40 mOhms. I need to calculate the load losses at different load currents (on HV side, from 1.0 Amps to 13.12 & on LV side up to 668 Amps). Any formula for this will be very useful, which can be applied to other transformers also. Thanks...!
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lyn Guru Join Date: Oct 2008 Posts: 42355 Good Answers: 1693	#1 Re: How to Calculate Transformer Losses 11/30/2012 7:49 AM
	Calculation of core losses of a transformer How to calculate power loss from a transformer‎ - 10 posts - Aug 4, 2011 Transformer Efficiency Calculations‎ - 6 posts - May 13, 2010 Transformer copper loss calculation‎ - 11 posts - Aug 2, 2009 How to calculate power loss in transmission cables?‎ - 5 posts - Sep 23, 2008 More results from physicsforums.com »
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ci139 Guru Join Date: Feb 2012 Posts: 595	#2 In reply to #1 Re: How to Calculate Transformer Losses 12/03/2012 8:15 AM
	"All posts must be in English. Posts in other languages will be deleted. Pay reasonable attention to written English communication standards. This includes the use of proper grammatical structure, punctuation, capitalization, and spelling. SMS messaging shorthand ("text-message-speak"), such as using "u" for "you", and "plz" for "please", is not acceptable." that's a very nice place indeed -- what ? ! will they pay me academics for that __________________ ci139
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ci139 Guru Join Date: Feb 2012 Posts: 595	#3 In reply to #2 Re: How to Calculate Transformer Losses 12/03/2012 8:43 AM
	well i made the personal math research at the university time - i knew most related formulas by heart - dropped smoking for the time - such increases your new information memory "RAM" to 95% from 5% - 1900% more efficincy THE LANGUGE in such is not english nor the native but MATHEMATICS (jerks) __________________ ci139
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