GOST IEC/TS 61000-3-5-2013 PDF

Full title and description

ГОСТ IEC/TS 61000-3-5-2013 — Совместимость технических средств электромагнитная. Ограничение колебаний напряжения и фликера, вызываемых техническими средствами с номинальным током более 75 А, подключаемыми к низковольтным системам электроснабжения. Нормы и методы испытаний. (English title: Electromagnetic compatibility of technical equipment — Limitation of voltage fluctuation and flicker caused by equipment with rated current greater than 75 A connected to low-voltage power supply systems — Limits and test methods). This GOST is an identical adoption (IDT) of IEC/TS 61000-3-5 (based on IEC/TS 61000-3-5:2009, edition 2) and provides limits, assessment procedures and test methods to evaluate voltage fluctuation and flicker emissions from large electrical equipment.

Abstract

This technical specification sets recommended limits and measurement/assessment methods for voltage changes, voltage fluctuations and flicker produced by electrical equipment with rated input current greater than 75 A per phase when connected to public low-voltage AC distribution systems. It explains how to characterise equipment emissions, how to assess impact on supply quality (including calculation of Pst and Plt flicker parameters) and includes consumer/supplier questionnaire guidance for pre-connection evaluation.

General information

• Status: Adopted as an interstate/national standard (GOST); in force (reprinted May 2020 edition noted).
• Publication date: Designation year 2013 (ГОСТ. .-2013); introduced into effect in the Russian Federation on 1 July 2014.
• Publisher: Adopted and published under the aegis of the Interstate Council / national standardization bodies (implemented by Rosstandart and member national bodies of the CIS interstate standards system).
• ICS / categories: 33.100.10 (Electromagnetic compatibility (EMC)).
• Edition / version: GOST adoption of IEC/TS 61000-3-5 (based on IEC/TS 61000-3-5:2009, edition 2).
• Number of pages: Approximately 21 pages (matches the IEC technical specification length).

Scope

The standard applies to electrical and electronic equipment with rated input current greater than 75 A per phase that is intended for connection to public low-voltage AC distribution systems. It gives recommended limits for steady and transient voltage changes, recommended flicker limits expressed via Pst and Plt, methods to characterise a piece of equipment's emissions, and guidance for network authorities and manufacturers on assessing acceptability prior to connection. The document is intended for normal operation conditions (it does not apply to emergency switching or abnormal fault conditions) and complements related parts of the IEC 61000-3 series that cover lower-rated equipment.

Key topics and requirements

• Applicability: equipment with rated input current > 75 A per phase connected to low-voltage public networks.
• Recommended steady-state voltage change limit (Δd_c): 3.3% (relative change).
• Recommended maximum relative voltage change (Δd_max): typical values are 4% (general), 6% (equipment with automatic switching more than twice per day with delayed restart or with manual restart), and 7% (attended equipment or equipment switched on manually no more than twice daily with delayed restart) — subject to interaction with flicker limits.
• Flicker assessment: calculation and limits for short-term (Pst) and long-term (Plt) flicker parameters; example calculation formulae relate equipment apparent power to transformer rating (Pst_LIMIT ≈ (S_L / S_TR)^(1/3) within defined ranges).
• Measurement and evaluation methods: recommended procedures include baseline measurements (before connection), post-connection measurements, and system studies to take network impedance and operating cycles into account.
• Information exchange: Annex guidance / questionnaire for suppliers and consumers to collect operating characteristics (duty cycle, switching frequency, motor starting behavior, automatic/manual switching, etc.) to support connection assessment.

Typical use and users

Primary users are network operators and supply authorities assessing connection requests, manufacturers and suppliers of large industrial drives and high-current equipment (e.g., large motors, converters, welding equipment, large UPS systems), EMC test laboratories, consultants performing power-quality studies, and regulatory bodies specifying connection conditions for large loads. The standard is used to define technical connection requirements, to design mitigation (soft-starts, filtering, active/reactive compensation) and to establish test protocols for compliance verification.

Related standards

Key related documents include other parts of the IEC 61000-3 series and associated EMC vocabulary and test reports, notably IEC 61000-3-2, IEC 61000-3-3, IEC 61000-3-11 and IEC 60050-161. National GOST equivalents and related CIS standards (for example ГОСТ 30804.3.11 which aligns with IEC 61000-3-11) are also relevant when assessing connection conditions and lower-rated equipment.

Keywords

EMC, flicker, voltage fluctuation, voltage change, low-voltage supply, rated current >75 A, limits, test methods, Pst, Plt, connection assessment, power quality.

FAQ

Q: What is this standard?

A: It is the interstate (GOST) adoption of IEC/TS 61000-3-5 and provides limits and test methods for voltage fluctuation and flicker caused by equipment with rated input current greater than 75 A connected to public low-voltage distribution systems.

Q: What does it cover?

A: It covers recommended limits for steady and transient voltage changes, procedures and measurement methods for assessing flicker (Pst, Plt), requirements for information exchange between supplier/consumer/network operator, and guidance for evaluating the acceptability of connecting large loads to low-voltage networks. It is not intended for emergency/fault switching conditions.

Q: Who typically uses it?

A: Network/supply authorities, manufacturers of high-current equipment, EMC laboratories, consultants performing power-quality and connection studies, and regulatory or certification bodies.

Q: Is it current or superseded?

A: The GOST edition is the 2013 adoption of the IEC technical specification (based on IEC/TS 61000-3-5:2009). National reprints (for example May 2020) have been published; users should check their national standards body for any amendments, withdrawal notices or newer related IEC publications affecting compatibility limits.

Q: Is it part of a series?

A: Yes — it is part of the IEC 61000-3 series (limits related to power quality and voltage disturbances) and should be used in conjunction with other parts of IEC 61000 (for example parts 3-2, 3-3 and 3-11) and related EMC publications.

Q: What are the key keywords?

A: Flicker, voltage fluctuation, voltage change limits, Pst, Plt, low-voltage distribution, rated current greater than 75 A, EMC, limits and test methods.