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  1. M

    Screw compressor MPCBs keep failing , Please Help !!

    This MCCB is for motor protection , since there is nothing between the motor and the breaker but the 3 Delta/star contactors, what i'm going to do now is replacing the bad 630A breaker with a another 1250A breaker, i think the problem is just simple as the breaker can't handle the motor...
  2. M

    Screw compressor MPCBs keep failing , Please Help !!

    So do you think using this with a 250kw motor is a wrong idea ??
  3. M

    Screw compressor MPCBs keep failing , Please Help !!

    here it is :
  4. IMG20180318091150.jpg

    IMG20180318091150.jpg

    • Mohammedi Seddik
    • Media item
    • Comments: 0
    • Category: Professional Electrician
  5. M

    Screw compressor MPCBs keep failing , Please Help !!

    here it is :
  6. M

    Screw compressor MPCBs keep failing , Please Help !!

    ipf , this phase lost is mesured after the failure of the breaker , i don't quit know if the phase is lost or decreased when the compressor is running.
  7. M

    Screw compressor MPCBs keep failing , Please Help !!

    yes Cadgey123 sounds like that , but what i need is an explanation of how those interuptions may damage breakers.
  8. M

    Screw compressor MPCBs keep failing , Please Help !!

    Thank you Pete999 for replying, the compressor supplys our machinery with compressed air , the current can reach 360A when in load versus 250A during unloading, and it runs with no problems until some power intruptions hapens and the breaker start to act weird, someimes it gives all 3 phases ...
  9. IMG20171221105112.jpg

    IMG20171221105112.jpg

    • Mohammedi Seddik
    • Media item
    • Comments: 0
    • Category: Professional Electrician
  10. M

    Screw compressor MPCBs keep failing , Please Help !!

    Hello , i'am facing a screw compressor breaker issue , lately a lot of power interuption hapens and the breaker trips when it hapens , but now the breaker don't even work, its 3 ph + N 630A MPCB but we only use the 3 phases output, its runing a 250 Kw compressor AC motor in Delta/star...
  11. IMG20180226151043.jpg

    IMG20180226151043.jpg

    • Mohammedi Seddik
    • Media item
    • Comments: 0
    • Category: Professional Electrician

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