IEC 62271-107-2019 PDF

Full title and description

High-voltage switchgear and controlgear - Part 107: Alternating current fused circuit-switchers for rated voltages above 1 kV up to and including 52 kV. This international standard specifies ratings, performance, design and test requirements for three-pole fused circuit‑switchers used on three‑phase alternating‑current systems (50 Hz or 60 Hz).

Abstract

IEC 62271-107:2019 is the third edition (2019) technical revision of the IEC series for high‑voltage switchgear. It focuses on fused circuit‑switchers (functional assemblies of a circuit‑switcher and current‑limiting fuses) and clarifies test parameters, ratings (linking rated continuous current to acceptable fuse‑links), and the separation of making/breaking duties as independent type tests. The edition aligns relevant requirements with IEC 62271‑1 and other parts of the 62271 series.

General information

• Status: Published / Current.
• Publication date: 28 May 2019.
• Publisher: International Electrotechnical Commission (IEC).
• ICS / categories: 29.130.10 (High‑voltage switchgear and controlgear).
• Edition / version: Edition 3.0 (2019).
• Number of pages: 110 pages (base IEC publication count).

Scope

Applies to three‑pole operated fused circuit‑switchers with rated voltages above 1 kV up to and including 52 kV for use on three‑phase alternating‑current systems (50 Hz or 60 Hz). The standard covers ratings, normal and special service conditions, design and construction aspects, type and routine tests (electrical, mechanical and dielectric), marking and documentation, and guidance on acceptable fuse‑links supplied or listed by the manufacturer.

Key topics and requirements

• Definitions and terms specific to fused circuit‑switchers and assemblies; alignment with IEC 62271 series terminology.
• Ratings and characteristic quantities: rated voltage, rated insulation levels, rated frequency, rated continuous current (linked to installed fuse‑links), rated short‑time and peak withstand currents, and rated durations.
• Service conditions and environmental considerations (normal and special service conditions) used to select insulation and mechanical design.
• Electrical performance and type tests: dielectric tests, making and breaking tests (made independent as type tests), short‑time and peak withstand current tests, and TRV treated as a test parameter rather than a rated value.
• Mechanical performance: endurance, interlocks, position indication, and mechanical operation tests to verify durability and safe operation under specified loads.
• Requirements on the relationship between fuse‑links and rated continuous current: manufacturers must provide lists of acceptable fuse‑links and their associated ratings; tests reference the highest listed rated continuous current.
• Marking, documentation and type‑test reports: nameplate data, declared ratings, acceptable fuse‑links, installation and maintenance information.

Typical use and users

Used by manufacturers and designers of high‑voltage fused circuit‑switchers, testing and certification laboratories, utilities and network operators specifying and procuring distribution and substation switching equipment, project engineers and consultants responsible for protection and switchgear selection, and national standards/adoption bodies preparing regional versions or adoptions.

Related standards

Closely related parts of the IEC 62271 series and other standards include IEC 62271‑1 (Common specifications for alternating‑current switchgear and controlgear), IEC 62271‑100 (Alternating‑current circuit‑breakers), IEC 62271‑105 (Switch‑fuse combinations / switch‑fuse guidance), and additional parts of the 62271 family that cover assembly, testing and special device types. Users should consult IEC 62271‑1 for common rules and definitions used across the series.

Keywords

fused circuit‑switcher, fused switch, switch‑fuse combination, high‑voltage switchgear, 1 kV to 52 kV, ratings, type test, TRV, rated continuous current, IEC 62271 series.

FAQ

Q: What is this standard?

A: IEC 62271‑107:2019 is the international standard specifying requirements for alternating current fused circuit‑switchers rated above 1 kV up to and including 52 kV (third edition, published May 28, 2019).

Q: What does it cover?

A: It covers scope, ratings, normal and special service conditions, construction and design requirements, type and routine tests (electrical, mechanical and dielectric), marking and documentation, and the relationship between installed fuse‑links and rated continuous current. It also clarifies TRV handling and makes certain making/breaking tests independent type tests.

Q: Who typically uses it?

A: Manufacturers of fused circuit‑switchers, test laboratories, utilities and network owners, procurement/specification engineers, and standards/adoption bodies.

Q: Is it current or superseded?

A: The 2019 third edition is the current IEC base publication (Edition 3.0, published 28 May 2019). Users should check national adoptions or later amendments for regional updates; the IEC entry lists a stability date and should be consulted for any amendments or corrigenda.

Q: Is it part of a series?

A: Yes — it is part of the IEC 62271 series (High‑voltage switchgear and controlgear). IEC 62271‑1 contains common specifications used across the series; other related parts cover circuit‑breakers, switch‑fuse combinations, prefabricated substations and device‑specific rules.

Q: What are the key keywords?

A: Fused circuit‑switcher, switch‑fuse, high‑voltage switchgear, rated voltage 1 kV–52 kV, rated continuous current, TRV, type tests, making/breaking tests.