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  1. COelectrician

    ZSCT Pickup

    I'm hoping someone can provide some insight into ground fault pickup settings. Motor info: 1. 2400 volt; 2. Solidly grounded; 3. Fuse/vacuum contactor starter; 4. 1.15 SF 5. ~8k amps ground fault current 6. Zero sequence 50:5 CT for ground fault protection; 7. 300Hp I've read through the Buff...
  2. COelectrician

    overload above hot stall time

    Saw this post and was wondering the same thing. Has this been asked/answered anywhere else? rockman7892's post was never answered. "rockman7892 (Electrical) (OP) 16 Jan 10 11:42 I have recently been looking at some motor protection relay curves and noticed some curves that were set below both...

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