AS 62053.23:2018 pdf free
AS 62053.23:2018 pdf free.Electricity metering equipment (ac) – Particular requirements
The apparent power taken by each current circuit of a meter connected through a current transformer shall not exceed the value shown in Table 2, at a current value that equals the rated secondary current of the corresponding transformer, at reference temperature and reference frequency of the meter.
The test shall be carried out as follows: After the voltage circuits have been energized at reference voltage for at least 1 h for class 2 and 3, without any current in the current circuits,the maximum current shall be applied to the current circuits. The meter error shall be measured at sinφ = 1 immediately after the current is applied and then at intervals short enough to allow a correct drawing to be made of the curve of error variation as a function of time. The test shall be carried out for at least 1 h, and in any event until the variation of error during 20 min does not exceed 0,2 %.
The tests of the influence of d.c. component in the current circuit shall be made with the circuit shown in Figure A.1 or with other equipment able to generate the required wave-forms, and the current wave-forms as shown in Figure A.2.
The variation in percentage error when the meter is subjected to the test wave-form given in Figure A.2 and when it is subjected to the reference wave-form shall not exceed the limits of variation given in Table 8.
NOTE The values given in the Figures are for 50 Hz only. For other frequencies the values have to be adapted accordingly.
The continuous magnetic induction may be obtained by using the electromagnet according to Annex B, energized with a d.c. current. This magnetic field shall be applied to all accessible surfaces of the meter when it is mounted as for normal use. The value of the magneto-motive force applied shall be 1 000 At (ampere-turns).AS 62053.23 pdf free download.
