IEC 62271-110-2023 PDF

Full title and description

St IEC 62271-110-2023 — High-voltage switchgear and controlgear - Part 110: Inductive load switching. This international standard specifies requirements and type-test procedures for AC switching devices used for switching inductive currents on systems above 1 000 V (including motor currents and shunt‑reactor currents) and updates references to related IEC switchgear parts.

Abstract

IEC 62271-110:2023 (Edition 5.0) is the technical revision of the Part 110 series; it applies to indoor and outdoor AC switching devices for operation at 50 Hz and 60 Hz on voltages above 1 kV where inductive load switching (motors, shunt reactors, etc.) is required. The edition replaces the 2017 edition and updates normative references such as IEC 62271-100 and IEC 62271-106.

General information

• Status: Published.
• Publication date: 16 March 2023 (IEC base publication / implementation in national bodies in 2023).
• Publisher: International Electrotechnical Commission (IEC).
• ICS / categories: 29.130.10 — High voltage switchgear and controlgear.
• Edition / version: 5.0 (2023).
• Number of pages: 61 (IEC official PDF edition).

Scope

Applies to AC switching devices designed for indoor or outdoor installation, for operation at 50 Hz and 60 Hz on systems above 1 000 V, when used to switch inductive currents such as high‑voltage motor currents and shunt‑reactor currents. It covers relevant switching devices including circuit‑breakers (per IEC 62271‑100) and high‑voltage contactors (per IEC 62271‑106). The edition provides type‑test procedures and conditions specific to inductive load switching.

Key topics and requirements

• Applicability and definitions for inductive load switching on systems above 1 kV.
• Type tests and performance criteria for switching of motor and shunt‑reactor currents (including test-circuit configurations to assess current chopping and restriking phenomena).
• Requirements and coordination with IEC 62271‑100 (circuit‑breakers) and IEC 62271‑106 (high‑voltage contactors); updated normative references to match the latest editions.
• Guidance on indoor/outdoor installation conditions, rated voltages and frequencies (50 Hz / 60 Hz), and measurement/verification methods for inductive switching behaviour.
• Procedures to verify dielectric, making, breaking and mechanical endurance relevant to inductive switching duties.

Typical use and users

Used by designers and manufacturers of high‑voltage switchgear and contactors, test laboratories performing type‑tests, utilities and industrial end users specifying equipment for motor and reactor switching duties, and national standards/adoption committees when implementing the IEC text as a national or regional standard.

Related standards

Closely related to and referenced with IEC 62271‑100 (Alternating‑current circuit‑breakers) and IEC 62271‑106 (Alternating current contactors, contactor‑based controllers and motor‑starters). Other parts of IEC 62271 and relevant IEC/ISO documents on switchgear testing and terminology are also referenced.

Keywords

Inductive load switching; high‑voltage switchgear; circuit‑breakers; contactors; motor switching; shunt reactor switching; type tests; current chopping; IEC 62271‑110; edition 2023.

FAQ

Q: What is this standard?

A: IEC 62271‑110:2023 is Part 110 of the IEC 62271 series, titled "High‑voltage switchgear and controlgear — Inductive load switching", specifying requirements and tests for AC switching devices used to switch inductive currents on systems above 1 kV.

Q: What does it cover?

A: It covers applicability, definitions, type‑test procedures and performance criteria for switching high‑voltage motor and shunt‑reactor currents, including test circuits and measures to address current chopping, restriking and related phenomena.

Q: Who typically uses it?

A: Manufacturers of HV switchgear and contactors, electrical design engineers, test laboratories, utilities and industrial organisations that specify or verify equipment for inductive switching duties, and national standards bodies for adoption.

Q: Is it current or superseded?

A: Current — this is Edition 5.0 published in 2023 and it cancels and replaces the previous (2017) edition and its corrigenda. Stability (target review) is indicated by IEC through 2030 for this edition.

Q: Is it part of a series?

A: Yes — it is part of the IEC 62271 series (high‑voltage switchgear and controlgear). Relevant companion parts include IEC 62271‑100 and IEC 62271‑106 among others.

Q: What are the key keywords?

A: Inductive load switching, high‑voltage switchgear, circuit‑breaker, contactor, motor switching, shunt reactor, current chopping, type tests, IEC 62271‑110:2023.