IEC 62271-1-2021 PDF

Full title and description

IEC 62271-1 — High-voltage switchgear and controlgear — Part 1: Common specifications for alternating-current switchgear and controlgear (Edition 2.0, consolidated with Amendment 1, 2021). This document contains the common technical requirements, ratings, tests and safety-related provisions that apply to high-voltage a.c. switchgear and controlgear used for indoor and/or outdoor installations on systems having rated voltages above 1 000 V.

Abstract

IEC 62271-1 provides the common specifications and essential requirements for a wide range of high-voltage switchgear and controlgear. It defines service conditions, ratings (voltage, current, short-circuit), constructionprinciples, routine and type tests (including dielectric, temperature-rise and short-circuit performance), mechanical and electrical endurance, protection, marking and documentation. The 2021 material updates the 2017 edition through Amendment 1 and related interpretation sheets to clarify and amend specific clauses.

General information

• Status: Active / International Standard (consolidated with 2021 amendment and interpretation sheet).
• Publication date: Original edition published 2017 (Edition 2.0). Amendment 1 published 2021 (October 2021 — consolidated/CSV and related interpretation sheet issued in 2021).
• Publisher: International Electrotechnical Commission (IEC).
• ICS / categories: 29.130.10; 29.130.99 (High-voltage switchgear and controlgear / Other switchgear and controlgear).
• Edition / version: Edition 2.0 (2017) consolidated with Amendment 1 (2021) — consolidated/csv versions available that integrate the amendment into the main text.
• Number of pages: Main 2017 edition: ~252 pages (original publication). Amendment 1: 8 pages; interpretation sheet(s) available as short documents (e.g., 4 pages). Consolidated file versions are published by IEC.

Scope

This part of IEC 62271 applies to AC switchgear and controlgear designed for indoor and/or outdoor installation and for operation at service frequencies up to and including 60 Hz on systems having rated voltages above 1 000 V. It establishes common technical requirements that apply unless a particular part of the 62271 series specifies otherwise for a specific type of equipment (for example circuit-breakers, disconnectors, metal‑enclosed switchgear, etc.).

Key topics and requirements

• Definitions, normal and special service conditions and environmental requirements (altitude, temperature, pollution, seismic etc.).
• Rated values and markings: rated voltage, current, frequency, insulation levels, rated short-circuit breaking and making currents and duty cycles.
• Design and construction requirements addressing clearances, creepage distances, insulation coordination and mechanical integrity.
• Type, routine and special tests: dielectric tests, temperature-rise tests, short-circuit withstand and making tests, mechanical operation and endurance tests, and verification of protective devices.
• Requirements for auxiliary circuits, interlocks, remote control, and electrical/mechanical interlocking to ensure safe operation and maintenance.
• Documentation, marking, and information to be supplied with equipment (ratings, installation, maintenance and safety instructions).
• Guidance on interchangeability, compatibility with other parts of the IEC 62271 series and references to common specifications (replaces earlier IEC 60694 common-specification usage).

Typical use and users

Used by manufacturers of high‑voltage switchgear and controlgear, testing and certification laboratories, utilities and system operators, consulting and design engineers, procurement specialists, and national standards bodies. The standard is a baseline for type testing, product development, factory and site acceptance testing, and for specifying equipment in tender documents and regulatory filings.

Related standards

IEC 62271-1 is the common-specification part of the IEC 62271 series. Related and frequently referenced parts include (non-exhaustive): IEC 62271-100 (alternating-current circuit-breakers), IEC 62271-101, IEC 62271-102 (disconnectors/earthing switches), IEC 62271-200 (metal-enclosed switchgear), and many other 62271-series parts and technical reports. It also replaces/updates older common-specifications such as IEC 60694. Collections and packs of the 62271 family are published for implementers of multi-part solutions.

Keywords

High-voltage, HV, switchgear, controlgear, common specifications, type tests, dielectric tests, short-circuit, temperature-rise, insulation coordination, IEC 62271, Amendment 1 (2021), interpretation sheet.

FAQ

Q: What is this standard?

A: IEC 62271-1 is the part of the IEC 62271 series that contains common specifications applicable to a.c. high-voltage switchgear and controlgear (equipment with rated voltages above 1 000 V). The 2017 edition (Edition 2.0) was updated with Amendment 1 and related interpretation material in 2021.

Q: What does it cover?

A: It covers general requirements, ratings, design and construction principles, type and routine tests (dielectric, short‑circuit, temperature-rise, mechanical endurance, etc.), marking and documentation, and service/environmental conditions for high-voltage switchgear and controlgear. It sets the baseline common requirements used by more specific 62271 parts.

Q: Who typically uses it?

A: Manufacturers, testing/inspection laboratories, utilities, consulting engineers, procurement and specification writers, and standards/regulatory bodies use this standard for design validation, type testing, procurement specifications and safety/installation guidance.

Q: Is it current or superseded?

A: The base Edition 2.0 dates from 2017. It has an Amendment and interpretation material published in 2021 (commonly referenced as IEC 62271-1:2017 + AMD1:2021 or IEC 62271-1:2017/AMD1:2021). Users should reference the consolidated/csv or the base text plus amendment/interpretation sheet to ensure they apply the most up-to-date clauses.

Q: Is it part of a series?

A: Yes — IEC 62271-1 is Part 1 of the IEC 62271 series (high-voltage switchgear and controlgear). Numerous other parts (e.g., -100, -102, -200, etc.) provide detailed requirements for specific types of equipment; 62271-1 supplies the common requirements referenced across the series.

Q: What are the key keywords?

A: High-voltage, switchgear, controlgear, common specifications, type tests, dielectric, short-circuit, rated voltage, temperature-rise, IEC 62271, amendment 2021.