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  1. Jay08

    MV Switchgear Short Circuit rating for 3s

    Why do MV Switchgear are rated for short circuit rating 3s? I have seen (limited to my experience) tripping time in relays is within 1S for faults. Overcurrent it may be more based on current value, but that doesn't a concern to SC rating. Even if I consider NGR current limiting to much lower...

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