Ammeter 'classes' what do they mean?

Discussion in 'Electronics Resources' started by Grayham, May 19, 2010.

  1. Grayham

    Thread Starter Member

    May 18, 2010
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  2. retched

    AAC Fanatic!

    Dec 5, 2009
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    From:
    Measurement Techniques

    Article:
    Relation between the accuracy and the reliability of certain thermo-energy type of instruments

    http://en.wikipedia.org/wiki/Current_transformer#Accuracy
     
    Last edited: May 19, 2010
  3. Grayham

    Thread Starter Member

    May 18, 2010
    79
    2
    I see so the class is actually accuracy in percentage.
    Class 1.5 = 1.5% error margin.
    Class 2.5 = 2.5% error margin.

    So lower class is better.

    Right?
     
  4. retched

    AAC Fanatic!

    Dec 5, 2009
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    Correct. They run hand in hand. Also, the lower the class, the more reliable and sensitive.

    So better overall.

    But, more expensive for the lower, especially .2 class.
     
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