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Anonymous Poster

Transformer and Alternator Ratings

10/11/2010 8:52 AM

why is Transformer or alternator rating is given in KVA not in KW?
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Anonymous Poster
#1

Re: Electrical

10/11/2010 9:02 AM

Its current and voltage varies during operation and before manufacturing we dont know exact power it can deliver. Its not a question to be asked in the forum did you used search option. study power factor.
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electricalexpert65
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Join Date: Oct 2009
Posts: 2061
Good Answers: 169
#2

Re: Electrical

10/11/2010 9:16 AM

Because the Transformer/Alternator manufacturer does not know the power factor of the loads that the transformer/alternator is going to supply.
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Anonymous Poster
#4
In reply to #2

Re: Electrical

10/11/2010 8:25 PM

Why you are so tough in your answer, do search and that stuff, if you don't know the answer let others give a good answer and you learn as well.
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PWSlack
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United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

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
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#6
In reply to #4

Re: Electrical

10/13/2010 3:42 AM

Because that is the correct answer.

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electricalexpert65
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Join Date: Oct 2009
Posts: 2061
Good Answers: 169
#8
In reply to #4

Re: Electrical

10/13/2010 9:25 AM

Are you responding to answer 1 or answer 2. Your wordings imply that you answered to answer 2 but wrongly mentioned that you are responding to answer 2. answer 2 is alreday polite only.
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perry
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Join Date: Dec 2006
Posts: 346
Good Answers: 6
#3

Re: Transformer and Alternator Ratings

10/11/2010 3:31 PM

guest; most alternators are rated as follows; 10 KW, 12.5 KVA @ 80% PF or 20KW, 25KVA @ 80% PF perry
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Anonymous Poster
#5
In reply to #3

Re: Transformer and Alternator Ratings

10/11/2010 8:28 PM

What is the difference between alternator an generator ?
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PWSlack
Guru
United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

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
#7
In reply to #5

Re: Transformer and Alternator Ratings

10/13/2010 3:43 AM

Topologically, alternator is a subset of generators.

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 "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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Anonymous Poster (3); electricalexpert65 (2); perry (1); PWSlack (2)

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