IEC Guide 111-1-2023 PDF

Full title and description

IEC Guide 111-1:2023 — Electric equipment for high-voltage substations - Common recommendations for product and system standards - Part 1: AC (alternating current). This guide gives horizontal guidance to harmonize product and system standards for AC equipment used in high-voltage (HV) substations (systems above 1 kV), providing common specifications and definitions to be used by IEC technical committees and standards developers.

Abstract

IEC Guide 111-1:2023 is a horizontal publication intended to help harmonize product and system standards for AC equipment in HV substations. It provides common recommendations and specifications that supplement the technical background retained by each technical committee, includes new and revised definitions and "normal conditions", and contains a general revision of clauses compared with the previous edition. The Guide is applicable when developing product and system standards for AC parts of HV substations.

General information

• Status: Published / Current.
• Publication date: 24 January 2023.
• Publisher: International Electrotechnical Commission (IEC).
• ICS / categories: 29.020; 29.240.10.
• Edition / version: Edition 1.0 (first edition of the split series).
• Number of pages: 75 pages.

Scope

This Guide applies to the development of product and system standards for AC equipment found in high-voltage substations (above 1 kV). It gives recommendations for common specifications across HV substation product and system standards while allowing technical committees freedom for specific technical choices. Part 1 covers AC aspects; a complementary Part 2 (DC) is referenced in the Guide. The document replaces and expands on the earlier IEC Guide 111 (2004) by revising normal conditions, adding new definitions and broadening the scope to cover a wider range of AC substation equipment.

Key topics and requirements

• Harmonization recommendations for product and system standards for AC HV substation equipment.
• Common specifications and definitions to be used across relevant IEC technical committees.
• Revised "normal conditions" and general clause updates compared with the previous edition.
• Guidance on applicability to power-electronic equipment and interfaces within the AC part of substations.
• Orientation for technical committees on drafting consistent product and system requirements for HV substations.

Typical use and users

Primary users are IEC technical committees and working groups developing or revising standards for high-voltage substation equipment (for example committees responsible for transformers, switchgear, protection and control, power electronics and associated systems), national standards bodies, manufacturers of HV substation equipment, utilities, consulting engineers, and conformity assessment bodies seeking consistent baseline recommendations for AC substation standards.

Related standards

IEC Guide 111-1:2023 is the first part of a two-part revision of IEC Guide 111; it is published alongside the intention to produce Part 2 for DC equipment. It cancels and replaces the second edition of IEC Guide 111 (2004). The Guide is intended to be used in conjunction with the many product and system standards for HV substation equipment developed by relevant IEC technical committees.

Keywords

high-voltage (HV) substations, AC equipment, harmonization, product standards, system standards, common specifications, normal conditions, IEC Guide 111.

FAQ

Q: What is this standard?

A: IEC Guide 111-1:2023 is an IEC Guide providing common recommendations and harmonization guidance for product and system standards applicable to AC equipment in high-voltage substations.

Q: What does it cover?

A: It covers recommendations for common specifications, definitions, normal conditions and drafting guidance for standards developers when producing or updating standards for AC parts of HV substations (systems above 1 kV). It is intended to be used alongside relevant product and system standards.

Q: Who typically uses it?

A: IEC technical committees and working groups, national standards bodies, manufacturers of HV substation equipment, utilities, design and consulting engineers, and conformity assessment bodies.

Q: Is it current or superseded?

A: IEC Guide 111-1:2023 is the current published edition (published 24 January 2023) and supersedes the earlier IEC Guide 111 (2004) as part of a two-part reissue of Guide 111.

Q: Is it part of a series?

A: Yes — this publication is Part 1 (AC) of the restructured IEC Guide 111 series; a Part 2 (DC) is referenced for DC equipment.

Q: What are the key keywords?

A: High-voltage substations, AC equipment, harmonization, product standards, system standards, common specifications.