IEC 62271-201-2014 PDF

Full title and description

High-voltage switchgear and controlgear - Part 201: AC solid-insulation enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV. This publication (IEC 62271-201:2014, second edition) specifies requirements for prefabricated solid‑insulation enclosed switchgear and controlgear intended for indoor installation and for service frequencies up to and including 60 Hz; it cancels and replaces the first edition from 2006.

Abstract

IEC 62271-201:2014 defines ratings, construction, testing and safety/access requirements for factory-assembled AC solid‑insulation enclosed switchgear for voltages >1 kV ≤52 kV. The 2014 edition tightens definitions and test procedures compared with the 2006 edition, restricts access to authorized personnel (removing public accessibility class B) and replaces the term "protection grade" with "protection category". It is intended to be read with the common requirements in IEC 62271-1.

General information

• Status: Published (2nd edition, active publication).
• Publication date: 27 March 2014.
• Publisher: International Electrotechnical Commission (IEC).
• ICS / categories: 29.130.10 (High-voltage switchgear and controlgear).
• Edition / version: Edition 2.0 (2014).
• Number of pages: 199 pages.

(Bibliographic data and page count from the IEC publication record and recognized standards catalogues.)

Scope

This standard applies to prefabricated, solid‑insulation enclosed switchgear and controlgear for alternating current with rated voltages above 1 kV and up to and including 52 kV for indoor installation and service frequencies up to and including 60 Hz. It covers ratings, design and construction, insulation and clearances, mechanical and electrical performance, type and routine tests, access and safety provisions, and information to be supplied with enquiries and orders. The document is a product‑specific part of the IEC 62271 series and is to be used together with IEC 62271-1 (common specifications).

Key topics and requirements

• Rated values and classifications: rated voltage range (>1 kV to ≤52 kV), rated insulation levels, rated normal and short‑circuit currents, frequencies up to 60 Hz.
• Design and construction: solid‑insulation enclosures, compartmentation, removable parts, materials (flammability, corrosion resistance) and sealing for indoor use.
• Electrical and mechanical tests: type tests, routine tests, temperature rise, dielectric and impulse withstand, short‑time and peak withstand currents.
• Safety and access: restricted access to authorized personnel only; removal of public access class; introduction of "protection category" in place of "protection grade".
• Earthing and operational provisions: requirements for earthing circuits, interlocks, clearances and barrier provisions to ensure safe operation and maintenance.
• Information and marking: information to be provided with enquiries, tenders and orders; labelling and documentation requirements for safe use and maintenance.

These topics reflect the technical revisions introduced in the 2014 edition and the normative structure used together with IEC 62271-1.

Typical use and users

Typical users include electrical design engineers, switchgear manufacturers, test laboratories, utilities, EPC contractors and specifications writers. Typical applications are indoor prefabricated switchgear assemblies used in power distribution substations, industrial power systems and building service substations where compact, solid‑insulation assemblies are required. The standard informs type testing, factory production control and documentation used by manufacturers and purchasers.

Related standards

IEC 62271-201 is part of the IEC 62271 series (high‑voltage switchgear and controlgear). It is intended to be read together with IEC 62271-1 (common specifications). Other related parts include IEC 62271-200 (AC metal‑enclosed switchgear) and additional parts of the 62271 series covering terminology, testing methods and specific equipment types. Regional/adopted versions exist (for example EN 62271-201:2014).

Keywords

solid‑insulation; enclosed switchgear; AC switchgear; high‑voltage; 1 kV–52 kV; indoor switchgear; prefabricated assemblies; type testing; protection category; accessibility; IEC 62271 series.

FAQ

Q: What is this standard?

A: IEC 62271-201:2014 is the second edition (2014) of the IEC standard that defines requirements for AC solid‑insulation enclosed switchgear and controlgear for rated voltages above 1 kV up to and including 52 kV, intended for indoor prefabricated assemblies.

Q: What does it cover?

A: It covers ratings, design and construction requirements, safety and access rules, type and routine tests, earthing and marking, and information to be supplied with enquiries and orders for solid‑insulation enclosed AC switchgear in the specified voltage range.

Q: Who typically uses it?

A: Manufacturers, electrical and substations engineers, testing laboratories, utilities, contractors and procurement/specification teams use the standard to design, test, specify and accept prefabricated solid‑insulation switchgear assemblies.

Q: Is it current or superseded?

A: The 2014 second edition superseded the 2006 edition. As of the 2014 publication it is the active edition; however, a third edition project (ED3 / CDV) has been circulated in committee stages (documents for vote in 2024/2025), so users should check national/IEC publication records for any published third edition or amendments before assuming the 2014 edition is the latest in force.

Q: Is it part of a series?

A: Yes — it is Part 201 of the IEC 62271 series (High‑voltage switchgear and controlgear). The series includes common specifications (Part 1) and many other parts covering different types of switchgear and related test methods.

Q: What are the key keywords?

A: Solid‑insulation, enclosed switchgear, AC switchgear, indoor, 1 kV–52 kV, prefabricated assemblies, protection category, type tests.