IEC 62052-21-2016 PDF

Full title and description

IEC 62052-21:2004 + A1:2016 (consolidated) — Electricity metering equipment (a.c.) — General requirements, tests and test conditions — Part 21: Tariff and load control equipment. This document specifies general requirements and type‑test procedures for indoor tariff and load control devices used with electricity metering systems (for example ripple‑control receivers, time switches, multi‑tariff registers and maximum demand indicator devices).

Abstract

This consolidated publication combines the original IEC 62052-21 first edition (published 18 May 2004) with Amendment 1 published in 2016 (consolidated as IEC 62052-21:2004+A1:2016). It defines scope, general design and functional requirements, type test methods (electrical, environmental and functional) and test conditions for tariff and load control equipment intended for indoor use in AC power systems. The standard focuses on type testing of newly manufactured equipment and does not set out acceptance/production inspection procedures except by example.

General information

• Status: Consolidated edition (IEC 62052-21:2004 combined with Amendment 1:2016) — active in consolidated form.
• Publication date: Base publication: 18 May 2004; Amendment 1 published in 2016 (consolidated edition issued 2016).
• Publisher: International Electrotechnical Commission (IEC).
• ICS / categories: 91.140.50 — Apparatus for measuring electrical quantities; electricity metering equipment.
• Edition / version: Edition 1.0 (2004) consolidated with Amendment 1 (2016) — often cited as IEC 62052-21:2004+A1:2016 (CSV consolidated version available).
• Number of pages: 44 pages (base publication); consolidated PDF (2004 + A1:2016) is available as a single document.

Scope

Applies to type testing of indoor tariff and load control equipment used in alternating‑current electricity metering systems — devices such as electronic ripple control receivers, tariff/time switches, multi‑tariff registers and maximum demand indicators. It covers electrical, environmental and functional tests and specifies related test conditions. The standard does not apply to portable meters, metering systems comprised of physically remote devices, equipment for rolling stock/ships/aircraft, or acceptance tests other than illustrative examples. It is intended for equipment designed for operation on AC networks up to nominal voltages (line limits described in the text) and for the incorporation of tariff/load control functions into multi‑function meters where applicable.

Key topics and requirements

• Definitions and terminology for tariff and load control equipment and associated functions.
• General construction and marking requirements for indoor tariff/load control devices.
• Type test program covering electrical performance, functional behaviour, timing and accuracy of tariff functions.
• Environmental tests: temperature, humidity, vibration, mechanical strength and climatic influences appropriate to indoor use.
• Electromagnetic compatibility and immunity tests appropriate for meter‑related control equipment (as referenced to relevant EMC standards).
• Power supply and ripple‑control input requirements, pulse and signalling interfaces, and timing/clock stability tests for time‑switch functions.
• Durability and endurance tests for mechanical/time switching elements and solid‑state control functions.
• Requirements for documentation, test records and manufacturer declarations necessary to demonstrate compliance with the type tests.

Typical use and users

Used by electricity meter and tariff/load control equipment manufacturers to design and type‑test products; by independent test laboratories to perform and witness type tests; by utilities and distribution companies to specify procurement and compliance requirements for tariff/load control devices; and by national standards bodies and conformity assessment organisations when adopting or referencing the IEC text in national regulations and product specifications.

Related standards

Closely related to other IEC product and test standards for electricity metering equipment, especially IEC 62052-11 (general requirements, tests and test conditions — Part 11), the IEC 62053 series (particular requirements for static and electromechanical meters), IEC 62052-31 (product safety for metering equipment) and various EMC and power‑system standards referenced in the normative clauses. Note that some IEC product standards for metering (for example elements of the IEC 62053 series and IEC 62052-11) were revised in later years; users should confirm the applicable edition and any national adoptions or modifications for procurement and regulatory compliance.

Keywords

tariff equipment, load control, ripple control receiver, time switch, multi‑tariff register, maximum demand indicator, electricity metering, type tests, IEC 62052, amendment 2016, metering test conditions

FAQ

Q: What is this standard?

A: IEC 62052-21 is the IEC product standard that specifies general requirements, test methods and test conditions for tariff and load control equipment used with AC electricity metering systems. The commonly referenced consolidated edition is IEC 62052-21:2004+A1:2016.

Q: What does it cover?

A: It covers type testing (electrical, environmental, functional and endurance tests) and related requirements for indoor tariff and load control devices such as ripple‑control receivers, tariff/time switches, multi‑tariff registers and maximum demand indicators. It sets test conditions and documentation expectations for demonstrating conformity.

Q: Who typically uses it?

A: Meter and control‑equipment manufacturers, test laboratories, utility procurement and technical teams, certification bodies and national standards organizations that adopt or reference IEC metering requirements.

Q: Is it current or superseded?

A: The base edition was published 18 May 2004 and Amendment 1 was published in 2016; the consolidated text (IEC 62052-21:2004+A1:2016) is the published consolidated form. Users should verify whether a newer edition or replacement has been issued or whether national adoptions have modified the text for regulatory purposes before relying on it for procurement or compliance (national/sectoral implementations and related IEC metering standards have seen updates in subsequent years).

Q: Is it part of a series?

A: Yes. It is part of the IEC product standards for electricity metering equipment (the IEC 62052 and IEC 62053 families and related parts). IEC 62052-11 (general metering requirements) and the IEC 62053 series (particular requirements for different meter types) are commonly used alongside Part 21.

Q: What are the key keywords?

A: Tariff equipment, load control, ripple control, time switch, multi‑tariff, maximum demand indicator, metering test, type test, IEC 62052-21, amendment 2016.