IEC 62053-23-2020 pdf free download

IEC 62053-23-2020 pdf free download.Electricity metering equipment — Particular requirements — Part 23: Static meters for reactive energy (classes 2 and 3)
Equipement de comptage de l’électricité — Exigences particulières — Partie 23: Compteurs statiques d’énergie reactive (classes 2 et 3).
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
IEC 60375:2018, Conventions concerning electric circuits
IEC 62052-11:2020, Electricity metering equipment — General requirements, tests and test
conditions — Part 11: Metering equipment
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 62052-11:2020 apply.
7.4 Meter constant
The requirements of IEC 62052-11:2020 apply.
7.5 Initial start-up of the meter
The requirements of IEC 62052-11:2020 apply.
7.6 Test of no-load condition
Tests and test conditions given in IEC 62052-11:2020 apply.
7.7 Starting current test
Tests and test conditions given in IEC 62052-1 1:2020 apply.
7.8 Repeatability test
Tests and test conditions given in IEC 62052-11:2020 apply.
7.9 Limits of error due to variation of the current
When the meter is operated under the reference conditions given in IEC 62052-11:2020, 7.1, the percentage errors shall not exceed the limits for the relevant accuracy class given in Table 3.
If the meter is designed for the measurement of energy in both directions, the values in Table 3 shall apply for each direction.
If the meter is rated for multiple connection modes, the accuracy testing results are valid only for the connection modes tested and cannot be used to claim accuracy for other, untested connection modes.
When testing poly-phase meters for compliance with Table 3 requirements for single phase loads, the test current shall be applied to each measuring element in sequence, while all the phase voltages shall remain balanced.
7.10 Limits of error due to influence quantities
Tests and test conditions given in IEC 62052-11:2020, 7.1 apply.
If the meter is rated for multiple connection modes, the accuracy requirements apply for each of the connection modes. All tests of effects of influence quantities shall be performed in one connection mode selected to exercise the complete metrological capability of the meter.
When the current and the phase displacement (sin p) are held constant as specified in Table 4, and any single influence quantity is applied one at a time, with the meter otherwise operated at reference conditions as specified in IEC 62052-11:2020, 7.1, the variation in percentage error relative to the intrinsic error shall not exceed the limits specified for the relevant class indexes given in Table 4.
The variation in percentage error induced by the influence quantities may vary depending on the value of the test current. The variation in percentage error in Table 4 is given for the specified values or ranges of the test current but the testing should be performed at the recommended values of test current given in Table 4.IEC 62053-23-2020 pdf free download.