IEC 62477-1-2022 cor1-2024 PDF

Full title and description

IEC 62477-1:2022/COR1:2024 — Safety requirements for power electronic converter systems and equipment — Part 1: General. This entry is the Corrigendum 1 (published 17 April 2024) to IEC 62477-1 Edition 2.0 (original publication date 20 May 2022). The corrigendum contains editorial and technical corrections to the 2022 edition; corrected text has been incorporated into published copies where indicated.

Abstract

IEC 62477-1:2022 establishes general safety requirements and a common terminology for power electronic converter systems (PECS) and their accessories and components used for electronic power conversion and switching. The 2024 Corrigendum 1 supplies corrections and clarifications to the 2022 edition to ensure the standard’s requirements are consistent, unambiguous and aligned with the intent of TC 22. The document is intended as a group safety publication (IEC Guide 104) and as a reference for product committees developing product standards where no dedicated product standard exists.

General information

• Status: Published / Valid (corrigendum issued).
• Publication date: Corrigendum 1: 17 April 2024 (base standard IEC 62477-1: 20 May 2022).
• Publisher: International Electrotechnical Commission (IEC).
• ICS / categories: 29.200 (Rectifiers. Converters. Stabilized power supply).
• Edition / version: Edition 2.0 (IEC 62477-1:2022) with Corrigendum 1 (2024).
• Number of pages: Corrigendum 1 — 14 pages; full IEC 62477-1:2022 edition — 517 pages (corrigendum text is published separately and incorporated into official copies).

Scope

Applies to power electronic converter systems (PECS), their specified accessories and components for electronic power conversion and switching, including control, protection, monitoring and measurement means whose rated system voltages do not exceed 1 000 V AC or 1 500 V DC. The document also applies to PECS that intentionally emit or receive radio waves for radio communication purposes. It provides minimum safety requirements for PECS portions of products, establishes terminology and coordination rules for interrelated parts within PECS, and offers guidance for product committees (Annex S). It does not cover telecommunications apparatus (other than power supplies to such apparatus), functional safety aspects covered by IEC 61508, nor electrical equipment and systems for railway applications and electric vehicles where other standards apply.

Key topics and requirements

• Definition of terms and classification relevant to PECS and associated equipment.
• Minimum requirements to reduce risks of fire, electric shock, thermal and mechanical hazards, and energy-related hazards during use, operation and, where stated, during service and maintenance.
• Requirements for protective measures, insulation coordination, creepage and clearance distances, dielectric strength and surge withstand as applicable to low-voltage PECS (≤ 1 000 V AC / 1 500 V DC).
• Rules for coordination of safety aspects across interrelated parts and modules within a PECS (system-level safety coordination).
• Marking, instructions for safe installation/operation/maintenance, and required documentation for compliance and safe use.
• Requirements specific to pluggable and permanently connected equipment, and to equipment that intentionally transmits/receives radio waves.
• Reference to test conditions and verification methods to demonstrate conformity with the safety requirements.
• Exclusions and interfaces with other standards (e.g., functional safety, railway and EV applications).

Typical use and users

Used by manufacturers and designers of power electronic converter systems and their components, product standards committees, testing and certification laboratories, regulatory and market surveillance bodies, safety and compliance engineers, and procurement/specification teams. It is applied when developing product standards, preparing conformity tests, performing safety assessments, and writing installation and maintenance instructions for PECS operating at low voltage levels covered by this part.

Related standards

Commonly used alongside or referenced with: IEC 62477-2 (higher-voltage power electronic converter safety), IEC 61508 (functional safety), IEC 61800 series (adjustable speed electrical power drive systems, e.g., IEC 61800-5-2), legacy IEC 62103 (withdrawn/replaced in scope by 62477 series), IEC Guide 104 (group safety publications). Regional and national adoptions include EN/EN IEC versions (for example EN IEC 62477-1) and various national identical adoptions.

Keywords

Power electronic converter systems (PECS), safety requirements, group safety publication, electrical safety, insulation coordination, creepage, clearance, thermal hazards, electric shock, IEC 62477-1, corrigendum 2024, TC 22.

FAQ

Q: What is this standard?

A: IEC 62477-1:2022/COR1:2024 is the Corrigendum 1 (published 17 April 2024) to IEC 62477-1 Edition 2.0 (originally published 20 May 2022). It defines general safety requirements for low-voltage power electronic converter systems and related equipment.

Q: What does it cover?

A: It covers terminology, minimum safety requirements and coordination rules for PECS with rated system voltages up to 1 000 V AC or 1 500 V DC, including requirements to reduce risks of fire, electric shock, thermal, energy and mechanical hazards, and rules for marking, documentation and testing. It excludes functional safety (IEC 61508) and certain domain-specific equipment like railway and electric vehicle systems.

Q: Who typically uses it?

A: Manufacturers and designers of PECS, product standards committees, testing and certification bodies, safety and compliance engineers, and regulatory/market surveillance authorities.

Q: Is it current or superseded?

A: The base edition (IEC 62477-1 Edition 2.0) was published on 20 May 2022. Corrigendum 1 was issued on 17 April 2024 to correct and clarify the 2022 edition. The publication is current; IEC lists a stability date for the edition (indicating expected stability) — consult the IEC webstore or national body for the latest status or subsequent amendments.

Q: Is it part of a series?

A: Yes. IEC 62477 is a family addressing safety for power electronic converters. Part 1 covers general low-voltage PECS; other parts (for example IEC 62477-2) address higher-voltage converters and additional subject-specific requirements. The Part 1 document is intended to be used as a group safety publication referenced by product committees.

Q: What are the key keywords?

A: Power electronic converter systems, PECS, safety requirements, insulation, creepage, clearance, thermal protection, electric shock, group safety publication, IEC 62477-1, corrigendum 2024.