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under which situation or why restricted earth fault protection operates in out side its zone that is external fault
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Answer Posted / hg
1) if any one ct saturates at through fault current due to
a) high harmonic content of current in through fault current leading to high voltage appearing across secondary and the ct saturates
2) under above scenario if there is no stabilizing resistor/ damage to stabilixing resitor than relay may operate
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what is restricted earth fault explain in details
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