IEC TR 62271-306-2018 PDF

Full title and description

IEC TR 62271-306:2012/AMD1:2018 — Amendment 1 to IEC TR 62271-306:2012. Title: "High-voltage switchgear and controlgear - Part 306: Guide to IEC 62271-100, IEC 62271-1 and other IEC standards related to alternating current circuit-breakers" (Amendment published August 2018). This publication is available both as the standalone amendment (A1:2018) and as a consolidated (2012 + A1:2018) CSV edition that integrates the amendment into the 2012 technical report.

Abstract

This technical report provides guidance, explanation and application notes for IEC 62271-100 and IEC 62271-1 and other related IEC standards as they apply to high-voltage a.c. circuit-breakers. It is intended to help utility, consultant and industrial engineers, manufacturers, test laboratories and other stakeholders interpret rated values, test requirements and specification parameters for circuit-breakers intended for indoor or outdoor installation on systems above 1 000 V at 50 Hz and 60 Hz.

General information

• Status: Current / Valid (stability date indicated to 2028).
• Publication date: 24 August 2018 (Amendment 1).
• Publisher: International Electrotechnical Commission (IEC).
• ICS / categories: 29.130.10 — High voltage switchgear and controlgear.
• Edition / version: IEC TR 62271-306:2012 + Amendment 1 (2018). Amendment document edition 1.0; consolidated CSV edition 1.1.
• Number of pages: 197 pages (Amendment 1 standalone); 895 pages (consolidated 2012+A1 CSV edition).

These bibliographic details are taken from the IEC publication records and national standards distributors for IEC TR 62271-306:2012/A1:2018.

Scope

The technical report explains and interprets requirements in IEC 62271-100 and IEC 62271-1 and other related IEC documents as they apply to a.c. circuit-breakers designed for indoor or outdoor installation, for operation at 50 Hz and 60 Hz on systems having voltages above 1 000 V. It provides background information, rationale for figures and test levels, and guidance useful when preparing specifications, performing type and routine testing, and selecting circuit-breaker performance levels.

Key topics and requirements

• Guidance on interpreting IEC 62271-100 (specific requirements for a.c. circuit-breakers) and IEC 62271-1 (common specifications).
• Explanation of rated values (voltage, current, short-time withstand, peak withstand, making and breaking capacities).
• Clarification of type tests, routine tests and special tests applicable to a.c. circuit-breakers.
• Information on mechanical endurance, electrical endurance and auxiliary circuits.
• Application notes on installation conditions (indoor/outdoor), ambient conditions and service environment.
• Guidance to prepare technical specifications and selection criteria for utilities, OEMs and purchasers.
• References to related IEC standards and test methods used when specifying and verifying performance.

Typical use and users

Primary users include utility engineers, substation designers, manufacturer design and compliance teams, test laboratory engineers, procurement/specification authors, and consultants involved in high-voltage switchgear and circuit-breaker selection, testing and standardization activities. The report is used when creating specifications, interpreting test requirements, and harmonizing product requirements with IEC normative documents.

Related standards

Closely related IEC publications include IEC 62271-100 (specific requirements for a.c. circuit-breakers), IEC 62271-1 (common specifications for high-voltage switchgear and controlgear), and other IEC standards referenced by those parts (for example standards on insulation coordination, test methods and safety). The technical report itself cross-references these normative documents to explain their application to circuit-breakers.

Keywords

High-voltage switchgear, circuit-breaker, AC circuit-breaker, IEC 62271-306, IEC 62271-100, IEC 62271-1, technical report, amendment 2018, type tests, routine tests, specification guidance.

FAQ

Q: What is this standard?

A: It is a technical report (IEC TR 62271-306) amended in 2018 (A1:2018) that provides guidance and interpretation for IEC standards applicable to a.c. circuit-breakers, notably IEC 62271-100 and IEC 62271-1.

Q: What does it cover?

A: It covers explanatory material, application notes and specification guidance for rated values, test levels, test types (type and routine tests), mechanical and electrical endurance and other aspects relevant to high-voltage a.c. circuit-breakers for systems above 1 000 V at 50/60 Hz.

Q: Who typically uses it?

A: Utility and industrial engineers, manufacturer design and compliance teams, test laboratories, consultants, procurement/specification authors and participants in standardization who need authoritative guidance on applying IEC circuit-breaker standards.

Q: Is it current or superseded?

A: The 2018 amendment (IEC TR 62271-306:2012/AMD1:2018) is an active amendment that was published on 24 August 2018; consolidated editions incorporating the amendment are also published. The IEC entry lists a stability date into 2028 for the consolidated publication (check IEC records for any later revisions if you need the absolute latest status).

Q: Is it part of a series?

A: Yes — it is part of the IEC 62271 series (high-voltage switchgear and controlgear), and specifically provides guidance tied to parts such as IEC 62271-100 and IEC 62271-1; it sits within the broader family of standards covering high-voltage switchgear, test methods and related topics.

Q: What are the key keywords?

A: High-voltage switchgear, a.c. circuit-breaker, IEC 62271-306, amendment 2018, specification guidance, type testing, routine testing, electrical endurance, mechanical endurance.