Paragraph 4 Methods of accuracy testI1

The tests in table 2 shall be carried out by one of the following methods—

• Method A test

  1. (1)

     A long period dial test where the advance of a kWh display, which is part of or connected to a meter under test, is compared with the advance of a precision kilowatt-hour meter;

• Method B test

  1. (2)

     A short period test where the rate of advance of a meter under test is compared to the rate of advance of a precision kilowatt-hour meter; or

• Method C test

  1. (3)

     A short period test where the actual rate of advance of a meter, when tested under constant power conditions over a specified test period, is compared to the calculated rate of advance for those conditions.