BS EN IEC 62053-24-2021 + A11-2021 PDF

Full title and description

STB BS EN IEC 62053-24:2021 + A11:2021 — Electricity metering equipment. Particular requirements — Part 24: Static meters for the fundamental component of reactive energy (accuracy classes 0,5S, 1S, 1, 2 and 3). This designation refers to the IEC 62053-24:2021 main text as adopted/endorsed as a European (EN) and British (BS) standard with Amendment A11:2021 applied.

Abstract

This standard part specifies particular requirements and type-test procedures for static var‑hour (reactive energy) meters that measure the fundamental-frequency component of reactive energy in AC networks (50 Hz and 60 Hz). Amendment A11:2021 provides updates and clarifications to the 2021 edition, including provisions referenced to electromagnetic compatibility (EMC) and related type-test details.

General information

• Status: Published / Current (EN/IEC adoption with national adoptions such as BS and other member bodies).
• Publication date: Main edition 2021 (published spring 2021; amendment A11 issued later in 2021 — national registrations vary between July–September 2021).
• Publisher: IEC (origin), CENELEC/EN adoption and BSI for the BS designation (BS EN IEC 62053-24:2021+A11:2021).
• ICS / categories: 17.220.20 (Measurement of electrical and magnetic quantities); 91.140.50 (Electricity supply systems).
• Edition / version: 2021 edition with Amendment A11:2021 (often quoted as BS EN IEC 62053-24:2021+A11:2021).
• Number of pages: Combined publication typically presented as the 2021 main document (~30–31 pages) with a small amendment document (A11) of a few pages; national catalogue entries show variations depending on format (main ≈31 pages; amendment typically 3–8 pages).

Scope

This part of IEC 62053 applies only to static meters intended to measure the fundamental component of reactive energy (var‑hour) in alternating‑current networks at 50 Hz or 60 Hz and covers type tests for meters in accuracy classes 0,5S, 1S, 1, 2 and 3. It is limited to type testing (type‑approval, conformance testing) and does not prescribe installation or in‑service verification procedures.

Key topics and requirements

• Definition and classification of accuracy classes for static reactive‑energy meters (0,5S, 1S, 1, 2 and 3).
• Type‑test procedures for performance verification of meters measuring the fundamental component of reactive energy (50/60 Hz networks).
• Electrical metrology requirements (measuring conditions, test signals, reference methods and test circuits).
• Requirements and normative references related to electromagnetic compatibility (EMC), including mapping to EU EMC provisions (Annex ZZ / harmonisation considerations) and specified immunity/emissions tests relevant for meter performance in realistic electromagnetic environments.
• Transition/replacement relationships to earlier editions (identifies which previous EN/IEC 62053-24 documents are superseded by the 2021 edition and amendment).

Typical use and users

Used by electricity meter manufacturers for product design and type testing; conformity assessment bodies and test laboratories for type‑approval and certification; utilities and grid operators that specify meter procurement and acceptance criteria; standards bodies and regulators referencing harmonised standards for EMC and metrology compliance. The standard supports accurate reactive‑energy measurement for billing, network management and power‑quality studies.

Related standards

Part of the IEC 62053 family (electricity metering equipment a.c.), related parts include other EN/IEC 62053 documents that cover static meters for active and reactive energy (for example parts 21, 22, 23 and related amendments). EN IEC 62053‑24:2021 replaces earlier EN 62053‑24 editions/amendments (2015 series and its amendments) and is published alongside harmonisation documents for EMC and measuring instruments.

Keywords

reactive energy, var‑hour, static meter, electricity metering equipment, IEC 62053, type tests, accuracy classes, EMC, metrology, BS EN IEC 62053-24

FAQ

Q: What is this standard?

A: It is IEC/EN technical requirements (as adopted by national bodies such as BSI) for static meters that measure the fundamental component of reactive energy; the 2021 edition with Amendment A11 updates type‑test and related requirements.

Q: What does it cover?

A: Type‑test procedures and particular requirements for static var‑hour meters in accuracy classes 0,5S, 1S, 1, 2 and 3, intended for 50 Hz and 60 Hz AC networks; it includes EMC‑related provisions through the amendment.

Q: Who typically uses it?

A: Meter manufacturers, testing and certification laboratories, utilities and regulators who need to demonstrate or verify meter performance and conformity to the relevant IEC/EN metrology and EMC requirements.

Q: Is it current or superseded?

A: The 2021 edition with Amendment A11:2021 is the current published edition that supersedes the earlier EN 62053‑24 editions/amendments (2015 and subsequent amendments). National adoptions (BS/EN/UNE/EVS etc.) record publication/validity dates in 2021.

Q: Is it part of a series?

A: Yes — it is part of the IEC 62053 series covering electricity metering equipment (a.c.), where different parts address active and reactive energy meters, and it is commonly published together with related parts and amendments as harmonised standards for the EU and national bodies.

Q: What are the key keywords?

A: Reactive energy, var‑hour meter, static meter, accuracy class, type test, IEC 62053, EN IEC, amendment A11, EMC, metrology.