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  1. roland64

    Interpretation Red Book IEEE Sdt 141

    I need help for the selection from a circuit breaker to 4.16 KV. For the momentary duty, I calculated the first-cycle network, using a estimated first-cycle reactance of 0.17 pu for motors at 4.16KV, 350HP; a estimated first cycle reactance of 20 pu for motors to 480V, 75 HP and 60 HP. For...

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