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This video shows some timing tests made with the VCB demonstrating the tripping time of about 18 ms (which is less then 1 cycle of power frequency!) with pole descrepancy about 1 ms.

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2 Comments


  1. Ahmad chachou
    Mar 07, 2020

    How do you test a vacuum circuit breaker


  2. Maheswaran
    Sep 04, 2019

    Please post the video for contact resistance test for busbar

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