PAT Test failure

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  • June 13, 2007 at 10:07 pm #28116
    bobokines
    Participant

    Can someone enlighten me on how a PAT tester works?

    I have a local school that has asked me to check out a BEKO dishwasher that has failed a PAT test on “leakage current”.


    The appliance is perfectly ok with any test that I can perform with a 500v Meggar.

    I have heard of this before but never been able to resolve the problem.

    Does a PAT tester test earth leakage current at 50Hz?

    Bob

    June 14, 2007 at 7:07 am #216977
    Simon46
    Participant

    Re: PAT Test failure

    Has it possibly dried out now?

    S.

    June 14, 2007 at 1:16 pm #216978
    petalpop
    Participant

    Re: PAT Test failure

    i had a washing machine that failed a pat test but when i went out to see it it was fine till i put water in it then found element went down to earth

    June 14, 2007 at 4:48 pm #216979
    eastlmark
    Moderator

    Re: PAT Test failure

    bobokines wrote:Can someone enlighten me on how a PAT tester works?

    I have a local school that has asked me to check out a BEKO dishwasher that has failed a PAT test on “leakage current”.


    The appliance is perfectly ok with any test that I can perform with a 500v Meggar.

    I have heard of this before but never been able to resolve the problem.

    Does a PAT tester test earth leakage current at 50Hz?

    Bob

    The basic ones dont test earth leakage but the more advanced do. Even then it is awkward as they run the machine for a few seconds in order to test it which is fine for a kettle but makes waiting for interlocks to engage and pressing start buttons almost impossible. AFAIK earth leakage does not need to be tested as far as PAT testing is concened only insulation and earth bond. Loads of ‘our’ appliances will fail earth leakage tests if that was the case.

    June 14, 2007 at 10:41 pm #216980
    bobokines
    Participant

    Re: PAT Test failure

    Thanks guys. I have tested the macihine for over 30 minutes and through a heat pause.

    The company that done the PAT test are going to retest so it should be interesting.

    Bob

    June 15, 2007 at 8:46 am #216981
    dpm
    Participant

    You might want to be there to watch. Bleedin pound-a-plug numpties can be a nightmare.

    June 17, 2007 at 6:32 pm #216982
    keithwilliams
    Participant

    Re: PAT Test failure

    £2.50 actually.
    i where both hats as an appliance repairer and a pat tester.
    don’t knock it though cos we are grossing £50k and growing fast.
    i’m also a lifeboat crew member and can tell you i’ve saved a lot more lives pat testing.

    June 17, 2007 at 6:33 pm #216983
    keithwilliams
    Participant

    Re: PAT Test failure

    of couse that should be wear two hats. i’ll spend some of my £2.50 on a dictionary.

    June 19, 2007 at 6:46 pm #216984
    pen0668
    Participant

    Re: PAT Test failure

    are u sure it didnt fail on flass test some are testing appliances with no experiance on elecrics or reading all they do is buy a pat tester and go!!
    i had one failing appliances it was the suppresser on flash test if you read info you cant flash test certain appliances contact manufacture if unsure
    😕

    June 19, 2007 at 7:00 pm #216985
    bobokines
    Participant

    Re: PAT Test failure

    Apparently this was the only appliance in the whole school that failed, so I would imagine that they are using the equipment correctly.

    I think some PAT testers test a leakage current on AC rather than just reading insulation resistance at 500V DC as we do on our tests.

    I haven’t heard the outcome yet but I will follow it up shortly.

    Bob

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