IEC 62053-24-2020 PDF

Full title and description

IEC 62053-24:2020 — Electricity metering equipment - Particular requirements - Part 24: Static meters for fundamental component reactive energy (classes 0,5S, 1S, 1, 2 and 3). The document specifies type-test requirements and performance criteria for static var‑hour (reactive energy) meters that measure the fundamental-component reactive energy in 50 Hz or 60 Hz AC networks.

Abstract

This second edition (2020) is a technical revision that defines metrological, constructional and test requirements for static reactive‑energy meters intended for billing, monitoring and power‑factor purposes. It covers accuracy classes 0,5S, 1S, 1, 2 and 3, requirements for operation up to line‑to‑neutral voltages of 1 000 V AC, provisions for meters used with low‑power instrument transformers (LPITs) and a set of type tests and influence‑quantity tests. The standard excludes portable meters, meters for rolling stock/vehicles/aircraft/ships, remote multi‑device metering systems and tamper‑detection measures.

General information

• Status: Published international standard (current edition: 2.0).
• Publication date: 17 June 2020.
• Publisher: International Electrotechnical Commission (IEC), TC 13 (Electrical energy measurement and control).
• ICS / categories: 17.220.20 (Measurement of electrical and magnetic quantities); 91.140.50 (Electricity supply systems).
• Edition / version: Edition 2.0 (2020).
• Number of pages: 46 pages.

Scope

IEC 62053-24:2020 applies only to static var‑hour meters of accuracy classes 0,5S, 1S, 1, 2 and 3 for measurement of alternating‑current reactive energy calculated from the fundamental frequency components of voltages and currents in 50 Hz or 60 Hz networks. It is limited to type‑tests and to meters designed for mains up to 1 000 V AC (line‑to‑neutral derived). Meters intended to operate with LPITs (IEC 61869 series) are considered compliant only when tested together with their LPITs so that they meet the requirements for directly connected meters. The standard explicitly excludes meters with nominal voltages above 1 000 V AC (line‑to‑neutral), portable meters, meters for rolling stock/vehicles/ships/aircraft, distributed metering systems comprising physically remote devices (except LPITs), laboratory/reference meters, data‑interface specifications to the register and tamper‑detection measures.

Key topics and requirements

• Definition and measurement convention: reactive energy and power based on fundamental frequency components only.
• Accuracy classes covered: 0,5S, 1S, 1, 2 and 3 with corresponding metrological limits and tests.
• Type tests for metrological performance, influence quantities (voltage, current, frequency, temperature, humidity), and immunity to electrical disturbances.
• Requirements and test procedures for meters intended to work with LPITs (must be tested together with LPITs).
• Mechanical, marking and documentation requirements for meter construction and user information.
• Exclusions and normative boundaries (safety and tamper detection covered by other standards, data‑interfaces and sockets/racks excluded).
• Informative annexes including summary of significant technical changes from the previous edition and guidance on harmonics/non‑sinusoidal conditions (where applicable).

Typical use and users

Primary users are electricity meter manufacturers, test laboratories and conformity assessment bodies, utilities and distribution system operators specifying metering equipment for billing and reactive‑energy accounting, system integrators and procurement teams, and LPIT manufacturers collaborating on meter/transformer solutions. Regulatory authorities and standards committees also use the standard as a reference for type approval criteria.

Related standards

IEC 62053-24:2020 is part of the IEC 62052/62053 family of metering standards and is intended to be used together with other metering standards, including IEC 62052-11 (general requirements and tests for metering equipment), IEC 62052-31 (product safety for meters), companion parts of IEC 62053 (e.g., parts dealing with active energy and other reactive‑energy classes), and the IEC 61869 series for low‑power instrument transformers (LPITs) when meters are specified or tested with LPITs. Regional/adopted versions (EN/EN IEC) may include harmonized amendments.

Keywords

reactive energy, var‑hour meter, static meter, accuracy classes 0.5S/1S/1/2/3, LPIT, IEC 62053, type tests, 50 Hz, 60 Hz, metering equipment.

FAQ

Q: What is this standard?

A: IEC 62053-24:2020 is an IEC international standard that defines particular requirements and type tests for static meters that measure the fundamental‑component reactive energy (var‑hours) in 50/60 Hz AC networks, covering accuracy classes 0,5S, 1S, 1, 2 and 3.

Q: What does it cover?

A: It covers metrological performance, type tests, influence‑quantity tests, construction/marking/documentation requirements, and rules for meters used with LPITs. It does not cover meter safety (covered by IEC 62052‑31), tamper detection measures, portable meters, vehicle/rolling‑stock meters, or remote multi‑device metering systems.

Q: Who typically uses it?

A: Meter manufacturers, certification and test laboratories, utilities and distribution operators, procurement/specification teams, LPIT suppliers and regulatory bodies involved in meter type approval and metrological compliance.

Q: Is it current or superseded?

A: The 2020 edition (Edition 2.0, published 17 June 2020) is the current IEC edition that supersedes the 2014 edition and its amendment; regional adoptions (EN/EN IEC) may have corresponding publication dates and amendments. Check national/regionally adopted versions for amendment history.

Q: Is it part of a series?

A: Yes — it is part of the IEC 62052/62053 family of standards for electricity metering equipment and is linked to other parts that address active energy, other reactive‑energy classes and general meter requirements; it also references the IEC 61869 series for LPITs.

Q: What are the key keywords?

A: Reactive energy, var‑hour meter, static meter, accuracy class, LPIT, type tests, metrological requirements, 50/60 Hz.