IEC 62053-22:2020 pdf free download – Electricity metering equipment – Particular requirements
1 scope
This part of lEC 62053 applies only to transformer operated static watt-hour meters of accuracyclasses 0,1 S,0,2 s and 0,5 s for the measurement of alternating current electrical activeenergy in 50 Hz or 60 Hz networks and it applies to their type tests only.
NOTE 1 For other general requirements,such as safety,dependability，etc.， see the relevant IEC 62052 orIEC62059 standards.
This document applies to electricity metering equipment designed to:
– measure and control electrical energy on electrical networks(mains) with voltage up to 1 000 V;
NOTE 2 For AC electricity meters, the voltage mentioned above is the line-to-neutral voltage derived from nominalvoltages. See lEC 62052-31:2015,Table 7.
– have all functional elements，including add-on modules,enclosed in,or forming a singlemeter case with exception of indicating displays;
– operate with integrated or detached indicating displays, or without an indicating display;be installed in a specified matching socket or rack;
– optionally，provide additional functions other than those for measurement of electricalenergy.
NOTE3 Modern electricity meters typically contain additional functions such as measurement of voltage magnitude,current magnitude,power,frequency，power factor,etc.; measurement of power quality parameters; load controlfunctions; delivery, time, test,accounting, recording functions; data communication interfaces and associated datasecurity functions. The relevant standards for these functions may apply in addition to the requirements of thisdocument. However, the requirements for such functions are outside the scope of this document.
NOTE 4 Product requirements for power metering and monitoring devices(PMDs) and measurement functions suchas voltage magnitude,current magnitude,power, frequency, etc., are covered in IEC 61557-12.However, devicescompliant with IEC 61557-12 are not intended to be used as billing meters unless they are also compliant with theIEC 62052-11:2020 and one or more relevant lEC 62053-xx accuracy class standards.
NOTE 5 Product requirements for power quality instruments (PQls) are covered in IEC 62586-1.Requirements forpower quality measurement techniques(functions) are covered in lEC 61000-4-30.Requirements for testing of thepower quality measurement functions are covered in lEC 62586-2.
NOTE 7 Nevertheless, specific tampering detection and prevention requirements, and test methods, as relevant fora particular market are subject to the agreement between the manufacturer and the purchaser.
NOTE 8 Specifying requirements and test methods for fraud detection and prevention would be counterproductive,as such specifications would provide guidance for potential fraudsters.
NOTE 9 There are many types of meter tampering reported from various markets; therefore, designing meters todetect and prevent all types of tampering could lead to unjustified increase in costs of meter design, verification andvalidation.
NOTE10 Billing systems, such as, smart metering systems, are capable of detecting irregular consumption patternsand irregular network losses which enable discovery of suspected meter tampering.
NOTE 11 For transformer operated meters paired with current transformers (CTs) according to lEC 61869-2:
– the standard CT measuring range is specified from 0,05 1, to 1may for accuracy classes 0,1,0,2,0,5 and 1 and these CTs are used for meters of class 0,5,1 and 2 according to lEC 62053-21;
– the special CT measuring range is specified from 0,01 1n to imax for accuracy classes 0,2 S and 0,5 S and theseCTs are used for meters of class 0,1 S,0,2 S and 0,5 S according to this document;
– combinations of standard CTs and meters of class 0,1 s,0,2 S and 0,5 S are subject to an agreement betweenmanufacturers and purchasers.
NOTE 12 This document does not specify emission requirements, these are specified in lEC 62052-11:2020,9.3.14.