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how to calculate knee point voltage of current transformer?
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Answer Posted / balamurugan r
10 % increase in voltage gives you nearly 50 % increase in
excitation current is called knee point voltage or
breakdown voltage.
To measure this first demagnetise the CT and apply
voltage gradually(like 10% or 20% step) from secondary
keeping primary should be open circuited.
| Is This Answer Correct ? | 59 Yes | 13 No |
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