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  1. kssr

    Transformer tripping on Standby Earth Fault (SEF) protection if neutral of transformer is grounded.

    A 66/6.9kV YNyn0 transformer with 66kV side solidly grounded when connected to a 66kV solidly grounded system is tripping on Standby Earth Fault protection. My doubts are: 1. Can grounded equipment like a transformer be connected to a grounded system. 2. Can there be one than one earth point in...

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