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  1. JeromeCaron is offline Junior Member Pro Subscriber
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    NETA 2 Questions

    Metal-enclosed, medium-voltage interrupter switches should be:


    Stored energy operated

    Motor operated

    Closing coil operated

    Nonload-break

    Hook stick operated

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  3. michaellabeit's Avatar
    michaellabeit is offline
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    Quote Originally Posted by JeromeCaron View Post
    Metal-enclosed, medium-voltage interrupter switches should be:


    Stored energy operated

    Motor operated

    Closing coil operated

    Nonload-break

    Hook stick operated
    I think it's "stored energy operated." Here's why.

    I work on 4.16kV, SF6 S&C Vista switchgear with vacuum bottles. It qualifies as metal-enclosed, medium-voltage interrupter switchgear. None of the switches on there are motor-operated. There's no closing coil used to operate the switches, they're all hand-cranked. They are definitely loadbreak capable, especially since they are gas-insulated switchgear. And they are not hook-stick operated.

    The switches are stored-energy operated though. Pretty sure what opens and closes those blades inside are heavy springs.

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