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Thread: Instantaneous Trip definition

  1. #1
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    Exclamation Instantaneous Trip definition

    Can anybody tell me the definition of instantaneous trip?
    What is the trip time frame in general?
    Last edited by vinod; 07-08-10 at 07:46 AM.
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  2. #2
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    Quote Originally Posted by vinod View Post
    Can anybody tell me the definition of instantaneous trip?
    What is the trip time frame in general?
    As fast as possible, with no intentional delay.

    The laws of physic pretty much prevent an activity from happening exactly instantaneously. Our industry uses this term to mean that the event is happening as fast as the mechanical operation can function.
    Last edited by jim dungar; 07-08-10 at 10:20 AM.
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  3. #3
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    Jim nailed it, IEEE definition is "No intentional delay"

    So the actual clearing time is based on the speed of the breaker itself. Usually 3-8 cycles, depending on the breaker type.

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