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manzoor14
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Join Date: Aug 2008
Posts: 19

Transformer Turn Ratio Deviation

01/23/2015 7:45 AM

Dear All,

We have tested TURN RATIO for many distribution trasnformers last week and the percentage difference was found less than 0.5% and as per my assumption the results are ok. but our consultant is asking to submit him some IEC or IEEE standard reference. will anyone can help me from where I can get the standard reference?
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Pathfinder Tags: PERCENTAGE DEVIATION IN TRANSFORMER TURN RATIO
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7anoter4
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Join Date: Oct 2012
Location: 100 miles North from the World Center
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#1

Re: Transformer Turn Ratio Deviation

01/24/2015 12:10 AM

60076-1 Power transformers -Part 1: General Table 1 - Tolerances

2. Voltage ratio at no load on principal tapping for a specified first pair of windings

The lower of the following values:

a) ±0,5 % of declared ratio

b) ±1/10 of the actual percentage impedance on the

principal tapping

Voltage ratio on other tappings, same pair and

Voltage ratio for further pairs:

To be agreed, but not less than the lesser of the values

in a) and b) above.

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manzoor14
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Join Date: Aug 2008
Posts: 19
#2
In reply to #1

Re: Transformer Turn Ratio Deviation

01/24/2015 12:28 AM

Dear Julius, Thanks a lot. I appreciate your assistance. Thanks once again.
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