A: No. It is a common typo. Use IEC 61000-4-30 or IEC 62586.
Full title: Electromagnetic compatibility (EMC) – Part 4-30: Testing and measurement techniques – Power quality measurement methods
Current valid edition (as of 2025): Edition 3.1 (2021) including Amendment 1.
This standard defines how to measure:
Why you need the latest UPD (update):
The 3.1 edition introduced clarifications for harmonic measurement under distorted waveforms and improved uncertainty specifications for Class A instruments. Without the update, your compliance certification may be invalid.
The IEC 60099-5:2018 is the current international standard for the selection and application of surge arresters in three-phase systems above 1 kV. This third edition replaced the 2013 version to align with updated arrester classifications introduced in IEC 60099-4:2014. Key Technical Changes in the Latest Update
The most significant revision involves moving away from the old Line Discharge (LD) Class system toward a more precise classification based on energy and charge:
New Classification System: Replaces LD classes with thermal energy ratings ( Wthcap W sub t h end-sub ) and repetitive charge transfer ratings ( Qrscap Q sub r s end-sub
Charge vs. Energy: Includes expanded discussions and calculations to help users estimate the corresponding charge for different stresses.
Redline Version (RLV): Official distributors like the IEC Webstore and the Standards Council of Canada offer an RLV PDF, which highlights every specific text change between the 2013 and 2018 editions. Scope and Content Overview
This application guide provides recommendations for several types of arresters: Gapless Metal-Oxide Arresters: Defined in IEC 60099-4.
Gapped Designs: Including those with series and parallel gapped structures (rated 52 kV and less) from IEC 60099-6.
Externally Gapped Line Arresters (EGLA): Defined in IEC 60099-8.
Old Technologies: Annex J provides guidance on managing and replacing legacy Silicon Carbide (SiC) gapped arresters. Essential Annexes for Selection
Annex F: Lists typical maximum residual voltages, a critical parameter for insulation coordination.
Annex H: Provides a detailed comparison between former line discharge classes and the new charge classification.
Annex I: Offers methods for estimating cumulative charges and energies during line switching. Related Recent Developments
While 60099-5:2018 remains current, related standards have seen more recent activity:
IEC TR 60099-10:2024: A new technical report released in June 2024 that explains the rationale behind tests in IEC 60099-4.
Harmonization: There is an ongoing joint task force effort to harmonize IEC and IEEE standards for separable and dead-front arresters as of early 2026. Go to product viewer dialog for this item. IEC 60099-5 Ed. 3.0 b:2018
Surge arresters - Part 5: Selection and application recommendations, Published by ANSI, 2018-01-19 IEC 60099-5:2018
Overview
The IEC 60099-5 PDF is a standard published by the International Electrotechnical Commission (IEC) that outlines the requirements for surge arresters used in electrical power systems. Specifically, this part of the standard (Edition 2.0, 2018-03) focuses on surge arresters for grids with nominal voltages above 1 kV.
Content
The PDF document contains 116 pages of detailed specifications, guidelines, and testing methods for surge arresters. The standard covers various aspects, including:
Key Features
The IEC 60099-5 PDF standard includes several key features:
Target Audience
The IEC 60099-5 PDF standard is intended for:
Conclusion
The IEC 60099-5 PDF standard provides a comprehensive framework for the design, testing, and application of surge arresters in electrical power systems. Its updated requirements, improved testing procedures, and increased focus on safety make it a valuable resource for electrical engineers, manufacturers, testing laboratories, and utilities. By following this standard, users can ensure the reliable and safe operation of surge arresters in high-voltage power systems.
The IEC 60099-5:2018 (Edition 3.0) is the current international standard providing guidance and recommendations for the selection and application of surge arresters in three-phase systems above 1 kV. As a technical revision of the 2013 edition, it aligns application practices with the modern arrester classification system introduced in IEC 60099-4:2014. Core Scope and Coverage
The standard serves as a comprehensive guide for engineers and asset managers to protect electrical infrastructure against transient overvoltages from lightning and switching. It specifically addresses three main types of arresters: Gapless Metal-Oxide Arresters: Defined by IEC 60099-4. iec 600995 pdf upd
Gapped Structures: Including those with series and parallel gaps rated 52 kV and less, as defined by IEC 60099-6.
Externally Gapped Line Arresters (EGLA): Used for overhead transmission and distribution lines under IEC 60099-8. Key Technical Updates in Edition 3.0
The primary driver for the update was the shift from "line discharge classes" to a more precise system based on thermal and impulse energy handling capability.
Alignment with IEC 60099-4:2014: The standard now uses the "charge classification" system (e.g., Qrscap Q sub r s end-sub Qthcap Q sub t h end-sub
) to better reflect how modern metal-oxide (MO) arresters handle energy stresses.
Expanded Charge Estimation: New annexes (Annex H and I) provide detailed comparisons and calculations to help users transition from old line discharge classes to the new charge-based classification.
Surge Arrester Coordination: It includes updated procedures for insulation coordination, helping designers define arrester ratings and residual voltage limits for substations and lines.
Special Application Guidance: The update provides step-by-step recommendations for unique scenarios, such as cable protection, transformer neutral protection, and ultra-high voltage (UHV) systems. Asset Management and Diagnostics
Beyond initial selection, IEC 60099-5 is a critical resource for condition assessment. It outlines methods for monitoring degradation, such as:
Leakage Current Measurement: Clause 6.1 highlights using the resistive component of leakage current as a diagnostic indicator of an arrester's health.
End-of-Life Strategies: Guidance on implementing diagnostic programs to prevent costly failures and service interruptions.
For those needing the specific document, it is available from authorized distributors like the IEC Webstore or ANSI Webstore, often offered as a Redline Version (RLV) that highlights all technical changes from the previous edition. IEC 60099-5:2018
The latest major update to IEC 60099-5 (Part 5: Selection and application recommendations) is the third edition (2018)
, which technically revised and replaced the previous 2013 version. Key Updates in IEC 60099-5:2018
The most critical change in this edition is the alignment with the new arrester classification system introduced in IEC 60099-4:2014 New Energy Classification System
: The old "Line Discharge Class" system was officially replaced by a system based on thermal energy ratings (for operating duties) and repetitive charge transfer ratings (for single event energies). New Charge Comparison Annexes
: Added Annex H and Annex I, which provide detailed comparisons between the old line discharge classes and the new charge-based classifications. Expanded Equipment Scope : The guide now provides recommendations for gapless metal-oxide arresters
(IEC 60099-4), gapped designs rated 52 kV and below (IEC 60099-6), and externally gapped line arresters (EGLA) (IEC 60099-8). Asset Management Section
: A new section (Clause 8) was added to address the entire lifecycle of an arrester, including maintenance, diagnostic indicators, and end-of-life considerations. Legacy Guidance
: Annex J was added to discuss end-of-life and replacement issues specifically for older silicon carbide (SiC) gapped arresters. Future Developments (IEC/IEEE 60099-11)
Looking forward, a major milestone is the development of the IEC/IEEE 60099-11 standard. This upcoming standard is expected to:
Unify the framework for both non-gapped (NGLA) and externally gapped (EGLA) line arresters. six new classes
(L1 to L6) for line surge arresters to better reflect specific performance levels.
For the official full-text PDF and specific technical values, you can visit the IEC Webstore for IEC 60099-5:2018 or authorized distributors like the ANSI Webstore specific formulas
used for calculating thermal energy dissipation according to this updated standard? IEC 60099-5:2018
The latest official version of the IEC 60099-5 standard, which provides recommendations for the selection and application of surge arresters, is the Third Edition (2018). This version technically revised and replaced the previous 2013 edition to align with new arrester classifications introduced in IEC 60099-4:2014. Overview of IEC 60099-5:2018
This standard covers the application of gapless metal-oxide, internally gapped, and externally gapped line arresters (EGLA) for three-phase systems over 1 kV. Key Technical Updates in the 3rd Edition
Arrester Classification: Updates classification to focus on thermal energy and repetitive charge transfer, replacing older line discharge classes.
Expanded Guidance: Adds new informative annexes (H, I, and J) regarding class transition calculations, switching surge estimations, and guidance on replacing older SiC arresters.
Insulation Coordination: Enhanced guidance for defining arrester ratings and residual voltage.
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The IEC 60099-5:2018 (Edition 3.0) standard serves as the primary, updated guide for selecting and applying surge arresters in three-phase systems with nominal voltages above 1 kV. It covers gapless metal-oxide, gapped, and line surge arresters (EGLA), incorporating performance-based ratings such as Qrscap Q sub r s end-sub Qthcap Q sub t h end-sub A: No
instead of traditional line discharge classifications. For more details, visit IEC Webstore. IEC 60099-5:2018
Title: "IEC 60099-5 Update: Enhancing Surge Arrester Standards for Electrical Power Systems"
Introduction
The International Electrotechnical Commission (IEC) has recently published an update to the IEC 60099-5 standard, which focuses on surge arresters for electrical power systems. This update aims to improve the safety, reliability, and performance of surge arresters, which play a critical role in protecting electrical infrastructure from voltage surges and overvoltages. In this article, we will discuss the key changes and enhancements introduced in the updated IEC 60099-5 standard.
Background on IEC 60099-5
IEC 60099-5 is a widely adopted international standard that covers the requirements for surge arresters used in electrical power systems. Surge arresters are essential devices that protect electrical equipment from voltage surges and overvoltages caused by lightning strikes, switching operations, or other external factors. The standard provides guidelines for the design, testing, and application of surge arresters to ensure their safe and reliable operation.
Key Changes in the Updated IEC 60099-5 Standard
The updated IEC 60099-5 standard introduces several significant changes and enhancements, including:
Benefits of the Updated IEC 60099-5 Standard
The updated IEC 60099-5 standard is expected to bring several benefits to the electrical power industry, including:
Conclusion
The updated IEC 60099-5 standard is a significant step forward in ensuring the safety, reliability, and performance of surge arresters in electrical power systems. The changes and enhancements introduced in the standard will help protect electrical infrastructure from voltage surges and overvoltages, reducing the risk of power outages and equipment damage. As the electrical power industry continues to evolve, the IEC 60099-5 standard will play a critical role in ensuring the reliability and efficiency of electrical power systems.
You can download the IEC 60099-5 PDF from the official IEC website or other authorized sources.
IEC 60099-5 standard, titled "Surge arresters - Part 5: Selection and application recommendations,"
serves as the definitive global guide for engineers to correctly choose and implement surge arresters in three-phase systems with nominal voltages above 1 kV. 1. Overview and Purpose
The standard provides comprehensive recommendations for the selection and application of both non-linear resistor type gapped surge arresters IEC 60099-1 gapless metal-oxide surge arresters IEC 60099-4
). Its primary goal is to ensure that arresters can withstand the electrical stresses of a system while protecting equipment from overvoltages like lightning and switching surges. IEC Webstore 2. Key Updates in the Latest Edition (2018)
The third edition, released in 2018, introduced a significant technical revision to align with changes in the manufacturing and testing of modern arresters: IEC Webstore New Charge Classification
: It introduced a new classification system based on thermal charge transfer rating ( cap Q sub t h end-sub ) and thermal energy rating ( cap W sub t h end-sub ), replacing the older line discharge classes. Comparison Guidance
: Annexes H and I provide specific calculations and comparisons to help users transition from the old discharge classification to the new charge-based metrics. Expanded Application Range
: While primarily focused on systems above 1 kV, it provides the mathematical and logical framework used throughout the IEC 60099 series 3. Core Technical Principles Non-Linearity
: Metal-oxide surge arresters (MOAs) exhibit extreme non-linear voltage-current characteristics. For example, a 10-kA arrester might allow a peak terminal voltage of 806 kV during a discharge, which is a factor of ~2.35 times its phase-to-earth voltage, even as current increases by eight orders of magnitude. Protective Levels : The standard defines how to calculate the Lightning Impulse Protective Level (LIPL) Switching Impulse Protective Level (SIPL)
to ensure they remain below the insulation strength (BIL/LIWV) of the protected equipment. Selection Criteria Continuous Operating Voltage ( cap U sub c
: Must be greater than the maximum power-frequency voltage at the installation site. Temporary Overvoltage (TOV)
: The arrester must survive the system's temporary overvoltages without thermal runaway. Università di Padova 4. Comparison Table: Editions Edition 1.0 Superseded Initial consolidated version with Amendment 1. Edition 2.0 Superseded Intermediate update for modern MOA technology. Edition 3.0
Introduced charge-transfer classification; replaced line discharge classes.
For more specific data or technical drawings, you can consult the official IEC Webstore or preview samples via iTeh Standards into the specific calculations for cap Q sub t h end-sub (thermal charge) or a comparison with the IEEE C62.22 equivalent standard? IEC 60099-5:2018
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The IEC 60099-5 standard, titled "Surge arresters – Part 5: Selection and application recommendations," is the definitive global guide for engineers designing and maintaining high-voltage power systems. As of early 2026, the current active version is IEC 60099-5:2018 (Edition 3.0).
This guide outlines the critical updates in the standard, the transition from older classifications, and how to access the latest documentation for compliant system design. 1. Scope and Technical Application
The IEC 60099-5 standard provides non-mandatory but highly recommended guidelines for the selection of surge arresters in three-phase systems with nominal voltages above 1 kV. It covers several specific arrester technologies: Gapless Metal-Oxide (MO) Arresters: Defined in IEC 60099-4.
Gapped Structures: Including series and parallel gapped arresters rated ≤is less than or equal to 52 kV per IEC 60099-6.
Line Surge Arresters (LSA): Specifically Externally Gapped Line Arresters (EGLA) defined in IEC 60099-8. 2. Key Updates in the Latest Edition (Edition 3.0)
The 2018 revision introduced a major shift to align with the testing protocols of IEC 60099-4:2014. The most significant change is the move from Line Discharge Classes to a Charge/Energy-Based Classification.
New Energy Classification: Instead of the old "Class 1 to 5" system, arresters are now classified by their thermal energy dissipation and repetitive charge transfer capability ( Qrscap Q sub r s end-sub
Annex H & I: These new sections provide direct comparisons and mathematical formulas to convert old line discharge classes into modern charge classifications.
Residual Voltage Focus: Selection workflows now place heavier emphasis on maximum residual voltage as the primary parameter for insulation coordination.
Diagnostic Methods: Annex D was updated to include modern service monitoring techniques, such as leakage current measurement with harmonic compensation.
The Importance of IEC 60099-5 PDF Updates: Ensuring Safety and Efficiency in Surge Arrester Technology
The International Electrotechnical Commission (IEC) is a global organization that develops and publishes standards for electrical and electronic technologies. One of the most critical standards in the field of surge arrester technology is IEC 60099-5, which covers the requirements for surge arresters used in electrical power systems. In this article, we will discuss the significance of IEC 60099-5 PDF updates and their impact on ensuring safety and efficiency in the industry.
What is IEC 60099-5?
IEC 60099-5 is a standard that specifies the requirements for surge arresters used to protect electrical power systems from overvoltages caused by lightning, switching operations, or other external factors. Surge arresters are critical components in power systems, as they help prevent damage to equipment and ensure the reliability of the electrical infrastructure. The standard covers various aspects of surge arrester design, testing, and application, including materials, construction, and performance requirements.
Why are IEC 60099-5 PDF Updates Important?
The IEC 60099-5 standard is periodically updated to reflect advances in technology, changes in industry practices, and new safety requirements. These updates are crucial for several reasons:
What Changes Can Be Expected in IEC 60099-5 PDF Updates?
IEC 60099-5 PDF updates can include a range of changes, such as:
How to Stay Up-to-Date with IEC 60099-5 PDF Updates
To stay current with IEC 60099-5 PDF updates, manufacturers, engineers, and other stakeholders can:
Conclusion
IEC 60099-5 PDF updates are critical to ensuring safety and efficiency in surge arrester technology. By staying current with the latest version of the standard, manufacturers, engineers, and other stakeholders can ensure compliance with regulatory requirements, improve product performance, and reduce the risk of electrical hazards. As the electrical industry continues to evolve, it is essential to stay informed about updates to IEC 60099-5 and other relevant standards to ensure the reliability and efficiency of power systems.
IEC 60099-5:2018 (Edition 3.0) is the international standard providing guidance for the selection and application of surge arresters in systems above 1 kV. IEC Webstore Key Deep Feature: Integrated Selection Methodology
A primary "deep feature" of this update is the shift toward a more holistic, step-by-step selection process
for metal-oxide surge arresters. Unlike previous versions, it emphasizes: Residual Voltage Optimization
: The standard highlights residual voltage as a critical parameter for system reliability, providing detailed typical maximum values in
to help users define narrow, precise ranges for their specific grid needs. Expanded Technology Scope
: It now fully integrates application guidance for diverse technologies, including: Gapless metal-oxide arresters (IEC 60099-4). Gapped structures (rated 52 kV and less, IEC 60099-6). Externally Gapped Line Arresters (EGLA) for transmission and distribution lines (IEC 60099-8). Diagnostic Guidance
: It provides comprehensive recommendations for monitoring arresters in service, helping operators move from reactive to predictive maintenance. IEC Webstore Key Sections for Technical Review Focus Area Tables of typical maximum residual voltages. Guidance on legacy silicon carbide (SiC) gapped arresters. Selection Flowcharts
Visual guides for choosing ratings based on temporary overvoltage (TOV) and lightning/switching insulation levels.
You can find the official document and detailed abstracts through the IEC Webstore or authorized resellers like iTeh Standards (like TOV factors) or a comparison between the 2013 and 2018 versions? IEC 60099-5:2018