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10.3923
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=
= 6
√ 3
√ 3
4.1.3 Relative Error
Turns ratio error can be calculated by comparison of the measured value and the reference rated
value using the following formula:
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− ����
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����������
������. [ % ] =
× 100%
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The calculated error can be compared with a limit value. Generally, there are limit values for the
turns ratio relative error. A typical limit value according to IEEE C57.12.00-2010 is 0.5%. This limit
value can be used to judge if the test is passed or failed.
90297-0.22 Instruction Manual mini-ATOS
Page 12 of 92
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