GOST IEC 60664-4-2017 PDF

Full title and description

GOST IEC 60664-4-2017 — Координация изоляции для оборудования низковольтных систем. Часть 4. Анализ высокочастотного напряжения. National adoption of IEC 60664-4 addressing insulation coordination for low-voltage equipment when subjected to high‑frequency voltage stresses (fundamental frequencies above 30 kHz up to about 10 MHz), with guidance for dimensioning clearances, creepage distances and solid insulation and associated test methods.

Abstract

This standard provides requirements and methods for assessing and specifying insulation distances and solid insulation for low‑voltage equipment exposed to high‑frequency voltage stress. It extends the application of the general insulation coordination rules to periodic voltages with fundamental frequencies above 30 kHz (up to ≈10 MHz) and is intended for use together with the other parts of IEC/GOST 60664 series (notably Part 1 and Part 5). The document is aimed at ensuring safe and reliable insulation performance in modern power‑electronics and high‑frequency systems.

General information

• Status: In force / Active (introduced nationally).
• Publication date: Adopted 9 November 2018; implemented (effective) 1 June 2019. (Document designation year: 2017.)
• Publisher: Federal Agency for Technical Regulation and Metrology (Rosstandart) / Interstate standard (adoption of IEC text).
• ICS / categories: ICS 29.080.30 (Insulation systems) — OKS/sector codes often shown as 29.035.01 (electrotechnical documentation/classification).
• Edition / version: GOST IEC 60664-4-2017 — national adoption of IEC 60664-4 (original IEC edition from 2005 as adopted into the GOST series).
• Number of pages: 56 pages (national publication).

Scope

GOST IEC 60664-4-2017 applies to the design and testing of basic, supplementary and reinforced insulation of low‑voltage equipment (generally for rated voltages up to AC 1000 V) for use up to about 2 000 m above sea level, when subjected to periodic voltages with fundamental frequencies above 30 kHz and up to about 10 MHz. The standard gives dimensioning values and test methods for clearances (air gaps), creepage distances (surface leakage paths) and solid insulation stressed by high‑frequency voltages. It is intended to be used together with GOST/IEC 60664‑1 (principles, requirements and tests) or GOST/IEC 60664‑5 (comprehensive method for small clearances/creepage) and is complementary to Part 3 where applicable. The part does not cover insulation distances through liquids, gases other than air or compressed air unless otherwise specified.

Key topics and requirements

• Definition of applicable frequency range (fundamental frequency > 30 kHz up to ~10 MHz) and its effect on insulation stress and breakdown behaviour.
• Dimensioning rules for clearances (air gaps) under high‑frequency stress including modification factors compared with power‑frequency values.
• Requirements for creepage distances (surface paths) and solid insulation when exposed to high‑frequency voltages, including where to apply the larger of clearance or creepage values.
• Considerations for basic, supplementary and reinforced insulation; references to Part 1 for reinforced insulation requirements.
• Test methods and procedures adapted to high‑frequency stress (including high‑frequency withstand and partial‑discharge considerations) for verification of insulation coordination.
• Application guidance on when and how to use this part in conjunction with GOST/IEC 60664‑1, 60664‑3 and 60664‑5.
• Altitude consideration (up to ~2000 m) and limitations: does not address special environments such as ionized gases, liquids or gases other than air unless specifically stated.
• Guidance on field homogeneity, electrode geometry and scale effects important for high‑frequency breakdown behaviour.

Typical use and users

Primary users are electrical/electronic product designers and engineers (especially in power electronics, switch‑mode power supplies, converters, motor drives and equipment with high switching frequencies), test laboratories, certification bodies, safety and compliance engineers, standards writers and technical committees. The standard is used during design, component selection and type testing to ensure that insulation clearances, creepage distances and solid insulation are adequate for high‑frequency operating conditions.

Related standards

This part is part of the IEC/GOST 60664 series and is intended to be used with: - GOST/IEC 60664-1 — Insulation coordination for equipment within low‑voltage systems — Part 1: Principles, requirements and tests; - GOST/IEC 60664-3 (2015) — Part 3: Use of coatings, sealing and moulding to protect against pollution; - GOST/IEC 60664-5 (2013) — Part 5: Comprehensive method for determining clearances and creepage distances ≤ 2 mm. Other related documents include test technique standards for high‑voltage testing, partial discharge measurement standards and national EMC/insulation standards referenced in product safety regulation.

Keywords

insulation coordination; high‑frequency voltage; clearances; creepage distance; solid insulation; low‑voltage equipment; withstand testing; partial discharge; power electronics; GOST; IEC 60664.

FAQ

Q: What is this standard?

A: GOST IEC 60664-4-2017 is the Russian national adoption of IEC 60664‑4 (Part 4 of the insulation coordination series) that provides rules and test guidance for insulation under high‑frequency voltage stress. It was registered nationally in 2018 and implemented 1 June 2019.

Q: What does it cover?

A: It covers dimensioning and testing of clearances (air gaps), creepage distances (surface leakage) and solid insulation for low‑voltage equipment exposed to periodic voltages with fundamental frequencies above 30 kHz up to about 10 MHz, and how to apply these requirements together with the other parts of the 60664 series.

Q: Who typically uses it?

A: Product designers and engineers working on converters, inverters, SMPS and other high‑frequency equipment; test laboratories and certification bodies; safety and compliance specialists; and standards/technical committees responsible for low‑voltage equipment safety.

Q: Is it current or superseded?

A: As published, GOST IEC 60664-4-2017 was introduced nationally with an effective date of 1 June 2019 and is shown as in force. It is a national adoption of the IEC text (the IEC source edition commonly referenced is IEC 60664‑4 from 2005). Users should verify with the national standards body (Rosstandart) or the latest standards catalogues before relying on the standard for certification, as newer revisions or amendments may be published after the national implementation date.

Q: Is it part of a series?

A: Yes — it is Part 4 of the IEC/GOST 60664 series (Insulation coordination for equipment within low‑voltage systems). It is intended to be used together with Part 1 (general principles), Part 3 (coatings/sealing/moulding for pollution) and Part 5 (comprehensive method for very small distances), among others.

Q: What are the key keywords?

A: Insulation coordination, high‑frequency voltage, clearance, creepage distance, solid insulation, withstand testing, partial discharge, low‑voltage equipment, power electronics.