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nok
Participant

Join Date: Jan 2012
Posts: 1

Current Transformer

01/19/2012 10:01 PM

Hi,

Very Good day to all.

Would someone explain for Current Transformer. How do I easy understand CT 3x3 1500A/5A.

1.CT ratio

2.Prim current

3.Sec Current

4.Burden

5.Plugged on V phase?

Thanks advance.
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SolarEagle
Guru

Join Date: Mar 2007
Location: by the beach in Florida
Posts: 33392
Good Answers: 1817
#1

Re: Current Transformer

01/19/2012 10:35 PM

This should help....

http://www.elkor.net/pdfs/AN0305-Current_Transformers.pdf

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vijaymail_electrical
Commentator

Join Date: Jan 2011
Location: India
Posts: 98
Good Answers: 2
#2

Re: Current Transformer

01/20/2012 4:23 AM

Hi,

1.CT ratio - 1500/5A. Means when 1500A flows in your primary, you can measure 5A in the secondary.

2.Prim current- Current which flows in the primary winding of CT. In your case, 1500A

3.Sec Current- Current which flows in the secondary winding of CT. In your case, 5A

4.Burden- How much load the CT can feed without errors in the secondary circuit. (Load means relays, meters)

5.Plugged on V phase? - I am not getting you. Be more specific!

Thanks,

Vijay.P

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