Recent content by Deji

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    Sympathetic Tripping

    I am aware that sympathetic tripping occurs in resistance grounded systems where a feeder trips due to an earth fault occurring on another feeder. Does the phenomenon apply to solidly grounded MV feeders also? I have read an old post: "earth fault protection settings for an 11kV feeder,"...
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    Earth Fault Relay Settings for 11kv Distribution Feeders

    In the power distribution company where I work, the earth fault relays are usually set to 20% of the nominal feeder current. I have also seen online sources that specify between 10% and 20% for earth fault settings. I am aware that even in an unbalanced load situation, there is a very...