Chap 3 Part 2 Why Required Percentage Differential Relay..????
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- เผยแพร่เมื่อ 20 ก.ค. 2020
- The percentage differential relay consists restraining coil for overcoming the trouble arising out of differences in the current ratio for the high value of an external short circuit current. ... The restraining coil also restrains the harmonics in the inrush current.
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