IEC 62053-23-2020 Electricity metering equipment – Particular requirements – Part 23: Static meters for reactive energy (classes 2 and 3).
This document does not apply to:
• meters for which the voltage line-to-neutral derived from nominal voltages exceeds 1 000 V;
• meters intended for connection with low power instrument transformers (LPITs as defined in the IEC 61 869 series) when tested without such transformers;
• metering systems comprising multiple devices (except LPITs) physically remote from one another;
• portable meters;
NOTE 6 Portable meters are meters that are not permanently connected.
• meters used in rolling stock, vehicles, ships and airplanes;
• laboratory and meter test equipment;
• reference standard meters;
• data interfaces to the register of the meter;
• matching sockets or racks used for installation of electricity metering equipment;
• any additional functions provided in electrical energy meters.
This document does not cover measures for the detection and prevention of fraudulent attempts to compromise a meter’s performance (tampering).
NOTE 7 Nevertheless, specific tampering detection and prevention requirements, and test methods, as relevant for a 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 to detect and prevent all types of tampering could lead to unjustified increase in costs of meter design, verification and validation.
NOTE 1 0 Billing systems, such as, smart metering systems, are capable of detecting irregular consumption patterns and irregular network losses which enable discovery of suspected meter tampering.
NOTE 1 1 For transformer operated meters paired with current transformers (CTs) according to IEC 61 869-2:
– the standard CT measuring range is specified from 0,05 I n to I max for accuracy classes 0,1 , 0,2, 0,5 and 1 and these CTs are used for meters of class 2 and 3 according to this document;
– the special CT measuring range is specified from 0,01 I n to I max for accuracy classes 0,2S and 0,5 S and these
CTs are used for meters of class 0,5 S and 1 S according to IEC 62053-24;
– combinations of standard CTs and meters of class 0,5 S and 1 S are subject to an agreement between manufacturers and purchasers.
NOTE 1 2 This document does not specify emission requirements, these are specified in IEC 62052-1 1 :2020, 9.3.1 4.
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 60375:201 8, Conventions concerning electric circuits
IEC 62052-1 1 :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 62052-1 1 :2020 apply.IEC 62053-23 pdf download.