IEC 62053-22:2003 pdf – Electricity metering equipment (a.c.) – Particular requirements – Part 22: Static meters for active energy (classes 0,2 S and 0,5 S)

IEC 62053-22:2003 pdf – Electricity metering equipment (a.c.) – Particular requirements – Part 22: Static meters for active energy (classes 0,2 S and 0,5 S).
1 Scope This part of IEC 62053 applies only to newly manufactured static watt-hour meters of accuracy classes 0,2 S and 0,5 S, for the measurement of alternating current electrical active energy in 50 Hz or 60 Hz networks and it applies to their type tests only. It applies only to transformer-operated static watt-hour meters for indoor application consisting of a measuring element and register(s) enclosed together in a meter case. It also applies to operation indicator(s) and test output(s). If the meter has a measuring element for more than one type of energy (multi-energy meters), or when other functional elements, like maximum demand indicators, electronic tariff registers, time switches, ripple control receivers, data communication interfaces, etc. are enclosed in the meter case, then the relevant standards for these elements also apply. NOTE IEC 60044-1 describes transformers having a measuring range of 0,01 I n to 1,2 I n , or of 0,05 I n to 1,5 I n , or of 0,05 I n to 2 I n and transformers having a measuring range of 0,01 I n to 1,2 I n for accuracy classes 0,2 S and 0,5 S. As the measuring ranges of a meter and its associated transformers have to be matched and as only transformers of classes 0,2 S and 0,5 S have the accuracy required to operate the meters of this standard, the measuring range of the meter will be 0,01 I n to 1,2 I n . It does not apply to: – watt-hour meters where the voltage across the connection terminals exceeds 600 V (line- to-line voltage for meters for polyphase systems); – portable meters and meters for outdoor use; – data interfaces to the register of the meter; – reference meters. The dependability aspect is covered by the documents of the IEC 62059 series. 2 Normative references The following referenced documents are indispensable for the application 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.
7.2 Influence of short-time overcurrents Short-time overcurrents shall not damage the meter. The meter shall perform correctly when back to its initial working condition and the variation of error at rated current and unity power factor shall not exceed 0,05 %. The test circuit shall be practically non-inductive and the test shall be performed for polyphase meters phase-by-phase. After the application of the short-time overcurrent with the voltage maintained at the terminals, the meter shall be allowed to return to the initial temperature with the voltage circuit(s) energized (about 1 h). The meter shall be able to carry for 0,5 s a current equal to 20 I max with a relative tolerance of +0 % to –10 %. 7.3 Influence of self-heating The variation of error due to self-heating shall not exceed the values given in Table 2.
3 Termes et définitions Pour les besoins du présent document, les termes et définitions donnés dans la CEI 62052-11 s’appliquent. 4 Valeurs électriques normales Les valeurs données dans la CEI 62052-11 s’appliquent. 5 Prescriptions mécaniques Les prescriptions de la CEI 62052-11 s’appliquent. 6 Conditions climatiques Les conditions données dans la CEI 62052-11 s’appliquent. 7 Prescriptions électriques En plus des prescriptions électriques de la CEI 62052-11, les compteurs doivent satisfaire aux prescriptions suivantes. 7.1 Consommation La consommation dans le circuit de tension et le circuit de courant doit être déterminée aux conditions de référence données en 8.5, à l’aide de toute méthode appropriée. L’erreur maximale totale de la mesure de la consommation ne doit pas excéder 5 %. La puissance active et la puissance apparente obtenues à la température de référence et la fréquence de référence, absorbées par chaque circuit de tension sous la tension de référence et par chaque circuit de courant pour le courant assigné, ne doivent pas dépasser les valeurs indiquées dans le Tableau 1.