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    prabhatmisra's Avatar
    prabhatmisra Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Mar 5, 2011, 06:32 AM
    Difference between ps class ct and 5p20 class ct
    stanfortyman's Avatar
    stanfortyman Posts: 5,598, Reputation: 279
    Electrical & Lighting Expert
    		  
    #2

    Mar 5, 2011, 07:45 AM

    Try again. This time use a few more words to ask your question.
    Adding your location would help too.
    Stratmando's Avatar
    Stratmando Posts: 11,188, Reputation: 508
    Uber Member
    		  
    #3

    Mar 5, 2011, 08:11 AM
    5P20, the 5 stands for percentage error (Accuracy), P stands for Protection and 20 is the VA burden of the CT.
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