Information service
29 Electrical engineering
New standards
IEC/TR 61439-0:2022 et
Low-voltage switchgear and controlgear assemblies - Part 0: Guidance to specifying assemblies
Scope: Within the IEC 61439 series of standards for low-voltage switchgear and controlgear
assemblies, there are system and application details that are specified by the specifier to enable
the manufacturer to produce an assembly that meets the needs and expectations of the specifier.
This part of IEC 61439, which is a technical report, identifies from the specifier’s perspective
those functions and characteristics that are defined when specifying assemblies. It provides:
– an explanation of the assembly characteristics and options within the IEC 61439 series;
– a guidance on how to select the appropriate options and define characteristics so as to meet
specific application needs; and
– an assistance in the specification of assemblies.
References within this document to the interface characteristics of an assembly and the
requirements with which they will comply assume that the assembly is designed, manufactured,
and verified in accordance with the relevant part of the IEC 61439 series.
assemblies, there are system and application details that are specified by the specifier to enable
the manufacturer to produce an assembly that meets the needs and expectations of the specifier.
This part of IEC 61439, which is a technical report, identifies from the specifier’s perspective
those functions and characteristics that are defined when specifying assemblies. It provides:
– an explanation of the assembly characteristics and options within the IEC 61439 series;
– a guidance on how to select the appropriate options and define characteristics so as to meet
specific application needs; and
– an assistance in the specification of assemblies.
References within this document to the interface characteristics of an assembly and the
requirements with which they will comply assume that the assembly is designed, manufactured,
and verified in accordance with the relevant part of the IEC 61439 series.
Base documents: IEC TR 61439-0:2022
IEC 60079-0:2026
Explosive atmospheres - Part 0: Equipment - General requirements
Scope: IEC 60079-0:2026 is available as IEC 60079-0:2026 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 60079-0:2026 specifies the general requirements for construction, testing and marking of Ex Equipment and Ex Components intended for use in or associated with explosive atmospheres.
The standard atmospheric conditions (relating to the explosion characteristics of the atmosphere) for Ex Equipment are:
- temperature −20 °C to +60 °C;
- pressure 80 kPa (0,8 bar) to 110 kPa (1,1 bar); and
- air with normal oxygen content, typically a volume fraction of 21 %.
This IEC 60079-0:2026 and other documents supplementing this document specify additional test requirements for Ex Equipment operating outside the standard temperature range, but in some cases, further additional consideration and additional testing is required for Ex Equipment operating outside the standard atmospheric pressure range and standard oxygen content. Such additional testing is particularly relevant with respect to Types of Protection that depend on quenching of a flame such as 'flameproof enclosures "d"' (IEC 60079-1) or limitation of energy, 'intrinsic safety "i"' (IEC 60079-11). This eighth edition cancels and replaces the seventh edition, published in 2017. This edition constitutes a technical revision. Refer to the Foreword of the document for a complete listing of the technical changes between edition 8.0 and the previous edition of the document.
IEC 60079-0:2026 specifies the general requirements for construction, testing and marking of Ex Equipment and Ex Components intended for use in or associated with explosive atmospheres.
The standard atmospheric conditions (relating to the explosion characteristics of the atmosphere) for Ex Equipment are:
- temperature −20 °C to +60 °C;
- pressure 80 kPa (0,8 bar) to 110 kPa (1,1 bar); and
- air with normal oxygen content, typically a volume fraction of 21 %.
This IEC 60079-0:2026 and other documents supplementing this document specify additional test requirements for Ex Equipment operating outside the standard temperature range, but in some cases, further additional consideration and additional testing is required for Ex Equipment operating outside the standard atmospheric pressure range and standard oxygen content. Such additional testing is particularly relevant with respect to Types of Protection that depend on quenching of a flame such as 'flameproof enclosures "d"' (IEC 60079-1) or limitation of energy, 'intrinsic safety "i"' (IEC 60079-11). This eighth edition cancels and replaces the seventh edition, published in 2017. This edition constitutes a technical revision. Refer to the Foreword of the document for a complete listing of the technical changes between edition 8.0 and the previous edition of the document.
Base documents:
IEC TS 62898-3-5:2026
Microgrids - Part 3-5: Technical requirements - Testing for microgrid monitoring, control, and energy management systems
Scope: IEC TS 62898-3-5:2026 provides technical requirements for the hardware in the loop testing (HIL), commissioning testing, and periodic testing that allows the verification, and quantification of the performance of microgrid monitoring, control, and energy management systems (MMCS and MEMS). This document applies to MMCS and MEMS developed for grid-connected or isolated microgrids, or both. This document includes the following aspects:
- general technical requirements;
- hardware in the loop testing;
- commissioning testing;
- periodic testing.
- general technical requirements;
- hardware in the loop testing;
- commissioning testing;
- periodic testing.
Base documents:
IEC 62561-8:2026 CMV
Lightning protection system components (LPSC) - Part 8: Requirements for components for electrically insulated LPS
Scope: This commented version (CMV) of the official IEC Standard allows the user to identify the changes made to the previous edition IEC TS 62561-8:2018. A vertical bar appears in the margin wherever a change has been made. Additions are in green text, deletions are in strikethrough red text.
IEC 62561-8:2026 specifies the requirements and tests for components used for electrically insulated LPS. These components, which can reduce the separation distance, are as follows:
- insulating stand-offs, used in conjunction with an air-termination system and down-conductors with the aim of maintaining the proper separation distance;
- insulating down‑conductors, including their specific fasteners.
Testing of insulating stand-offs and insulating down-conductor components for an explosive atmosphere is not covered by this document. This first edition cancels and replaces IEC TS 62561-8 published in 2018. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to IEC TC 62561-8:2018:
a) title and scope of the standard has been adjusted;
b) the document has been updated in line with IEC 60068-2-52:2017 on salt mist treatment;
c) the document has been updated in line with ISO 22479:2019 on humid sulphureous atmosphere treatment;
d) two different possible example configurations for pull out tests have been introduced;
e) additional information on pollution has been included;
f) an alternate test arrangement for high voltage impulse test has been included;
g) a new normative Annex H for applicability of previous tests has been introduced;
h) pass criteria for high voltage impulse testing updated;
i) explanation on high voltage impulse testing with negative polarity has been added.
IEC 62561-8:2026 specifies the requirements and tests for components used for electrically insulated LPS. These components, which can reduce the separation distance, are as follows:
- insulating stand-offs, used in conjunction with an air-termination system and down-conductors with the aim of maintaining the proper separation distance;
- insulating down‑conductors, including their specific fasteners.
Testing of insulating stand-offs and insulating down-conductor components for an explosive atmosphere is not covered by this document. This first edition cancels and replaces IEC TS 62561-8 published in 2018. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to IEC TC 62561-8:2018:
a) title and scope of the standard has been adjusted;
b) the document has been updated in line with IEC 60068-2-52:2017 on salt mist treatment;
c) the document has been updated in line with ISO 22479:2019 on humid sulphureous atmosphere treatment;
d) two different possible example configurations for pull out tests have been introduced;
e) additional information on pollution has been included;
f) an alternate test arrangement for high voltage impulse test has been included;
g) a new normative Annex H for applicability of previous tests has been introduced;
h) pass criteria for high voltage impulse testing updated;
i) explanation on high voltage impulse testing with negative polarity has been added.
Base documents:
IEC 60800:2021/AMD1:2026
Amendment 1 - Heating cables with a rated voltage up to and including 300/500 V for comfort heating and prevention of ice formation
Scope:
Base documents:
IEC 60800:2021+AMD1:2026 CSV
Heating cables with a rated voltage up to and including 300/500 V for comfort heating and prevention of ice formation
Scope: IEC 60800:2021+AMD1:2026 CSV is applicable to, and specifies requirements for resistive heating cables for low temperature applications such as comfort heating and the prevention of ice formation. These heating cables and heating cable sets can comprise either factory assembled or field (work-site) assembled units, and are heating cables assembled in accordance with manufacturer’s instructions. Bare conductors and protected conductors to be supplied at voltages equal to, or less than, 50 V are excluded from the scope of this document.
Typical applications include, but are not limited to:
- surface heating installed in or under surfaces;
- direct and storage heating;
- snow melting and frost protection of roofs, gutters, pipes, etc.
Electrical resistance trace heating systems for industrial and commercial applications are specified in the IEC 62395 series [1] and for explosive atmospheres applications in the IEC/IEEE 60079-30 series [2], as are mineral insulated heating cables. Applications in which the sheath temperature exceeds 100 °C are outside the scope of this document.
Typical applications include, but are not limited to:
- surface heating installed in or under surfaces;
- direct and storage heating;
- snow melting and frost protection of roofs, gutters, pipes, etc.
Electrical resistance trace heating systems for industrial and commercial applications are specified in the IEC 62395 series [1] and for explosive atmospheres applications in the IEC/IEEE 60079-30 series [2], as are mineral insulated heating cables. Applications in which the sheath temperature exceeds 100 °C are outside the scope of this document.
Base documents:
IEC 62561-8:2026
Lightning protection system components (LPSC) - Part 8: Requirements for components for electrically insulated LPS
Scope: IEC 62561-8:2026 specifies the requirements and tests for components used for electrically insulated LPS. These components, which can reduce the separation distance, are as follows:
- insulating stand-offs, used in conjunction with an air-termination system and down-conductors with the aim of maintaining the proper separation distance;
- insulating down‑conductors, including their specific fasteners.
Testing of insulating stand-offs and insulating down-conductor components for an explosive atmosphere is not covered by this document. This first edition cancels and replaces IEC TS 62561-8 published in 2018. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to IEC TC 62561-8:2018:
a) title and scope of the standard has been adjusted;
b) the document has been updated in line with IEC 60068-2-52:2017 on salt mist treatment;
c) the document has been updated in line with ISO 22479:2019 on humid sulphureous atmosphere treatment;
d) two different possible example configurations for pull out tests have been introduced;
e) additional information on pollution has been included;
f) an alternate test arrangement for high voltage impulse test has been included;
g) a new normative Annex H for applicability of previous tests has been introduced;
h) pass criteria for high voltage impulse testing updated;
i) explanation on high voltage impulse testing with negative polarity has been added.
- insulating stand-offs, used in conjunction with an air-termination system and down-conductors with the aim of maintaining the proper separation distance;
- insulating down‑conductors, including their specific fasteners.
Testing of insulating stand-offs and insulating down-conductor components for an explosive atmosphere is not covered by this document. This first edition cancels and replaces IEC TS 62561-8 published in 2018. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to IEC TC 62561-8:2018:
a) title and scope of the standard has been adjusted;
b) the document has been updated in line with IEC 60068-2-52:2017 on salt mist treatment;
c) the document has been updated in line with ISO 22479:2019 on humid sulphureous atmosphere treatment;
d) two different possible example configurations for pull out tests have been introduced;
e) additional information on pollution has been included;
f) an alternate test arrangement for high voltage impulse test has been included;
g) a new normative Annex H for applicability of previous tests has been introduced;
h) pass criteria for high voltage impulse testing updated;
i) explanation on high voltage impulse testing with negative polarity has been added.
Base documents:
Replaces: IEC TS 62561-8:2018
IEC 62590-2-2:2026
Railway applications - Electronic power converters for fixed installations - Part 2-2: DC Traction applications - Controlled converters
Scope: IEC 62590-2-2:2026 describes functions and working principles, specifies requirements, interfaces, and test methods for controlled converters for DC electric traction power supply systems:
– AC/DC converters:
• rectifiers,
• inverters,
• combinations.
– DC converters.
The purpose of the converters can be a power connection to other power networks or energy storages.
The common characteristic of this equipment is the possibility to influence the power flow in the DC electric traction power supply system. The converters can be:
– line-commutated;
– self-commutated.
This document applies to fixed installations of the following electric traction systems:
– railway networks,
– metropolitan transport networks including metros, tramways, trolleybuses and fully automated transport systems, magnetic levitated transport systems, and electric road systems.
– AC/DC converters:
• rectifiers,
• inverters,
• combinations.
– DC converters.
The purpose of the converters can be a power connection to other power networks or energy storages.
The common characteristic of this equipment is the possibility to influence the power flow in the DC electric traction power supply system. The converters can be:
– line-commutated;
– self-commutated.
This document applies to fixed installations of the following electric traction systems:
– railway networks,
– metropolitan transport networks including metros, tramways, trolleybuses and fully automated transport systems, magnetic levitated transport systems, and electric road systems.
Base documents:
IEC 60884-3-2:2026
Plugs and socket-outlets for household and similar purposes - Part 3-2: Particular requirements for accessories incorporating electronic components to perform additional functions
Scope: IEC 60884-3-2:2026 applies to plugs and fixed or portable socket-outlets for AC only, incorporating electronic components to perform additional functions, with or without earthing contact, with a rated voltage greater than 50 V but not exceeding 440 V and a rated current not exceeding 32 A, intended for household and similar purposes, for use either indoors or outdoors.
This document covers safety and Electromagnetic Compatibility (EMC) requirements for plugs and socket-outlets incorporating electronic components to perform additional functions.
This document covers safety and Electromagnetic Compatibility (EMC) requirements for plugs and socket-outlets incorporating electronic components to perform additional functions.
Base documents:
IEC 62024-3:2026
High frequency inductive components - Electrical characteristics and measuring methods - Part 3: AC loss measured by sinusoidal wave of inductors for DC-to-DC converters
Scope: IEC 62024-3:2026 specifies test methods for AC losses of high-frequency inductive components for power supplies used in DC-to-DC converters and similar devices at currents close to actual operation and introduces the measurement principle, scope of application and matters to be noted for each method. This document is applicable to leaded and surface mount inductors with dimensions in accordance with IEC 62024-2.
Base documents:
IEC 63395:2026
Sustainable management of waste electrical and electronic equipment (e-waste)
Scope: IEC 63395:2026 specifies requirements and provides guidance for the sustainable management of waste electrical and electronic equipment (e-waste) for all process steps, from collection to returning recovered products, components, materials or energy to the value chain. It includes traceability, monitoring and evaluation of the e-waste flow, recovery rate and recovery quality.
The document is intended for use by an organization involved in e-waste management seeking to manage its responsibilities in a systematic manner.
The requirements set by this document will help an organization to achieve sustainability outcomes within the context of e-waste management, including:
- enhancement of organizations’ performance in relation to quality, environment and occupational health and safety;
- fulfilment of compliance obligations.
The document is applicable to any organization, regardless of its size, type and nature.
This document applies to the environmental, health and safety, and quality aspects of e-waste management activities that the organization determines it can either control or influence, from a lifecycle perspective.
NOTE 1 Social aspects – e.g. employment creation, conflict minerals, employment conditions – are not addressed directly but indirectly through the benefits of sustainable management of e-waste.
NOTE 2 Additional local requirements or regulations can apply.
This document is a basic environment horizontal publication focusing on essential requirements and is primarily intended for use by committees in the preparation of publications within the area of environment in accordance with the principles laid down in IEC Guide 123. Wherever applicable, it is the responsibility of committees to make use of environment basic publications in the preparation of their environment group and product publications. Committees can apply this document directly to products when they do not develop a product publication in the area of environment.
The document is intended for use by an organization involved in e-waste management seeking to manage its responsibilities in a systematic manner.
The requirements set by this document will help an organization to achieve sustainability outcomes within the context of e-waste management, including:
- enhancement of organizations’ performance in relation to quality, environment and occupational health and safety;
- fulfilment of compliance obligations.
The document is applicable to any organization, regardless of its size, type and nature.
This document applies to the environmental, health and safety, and quality aspects of e-waste management activities that the organization determines it can either control or influence, from a lifecycle perspective.
NOTE 1 Social aspects – e.g. employment creation, conflict minerals, employment conditions – are not addressed directly but indirectly through the benefits of sustainable management of e-waste.
NOTE 2 Additional local requirements or regulations can apply.
This document is a basic environment horizontal publication focusing on essential requirements and is primarily intended for use by committees in the preparation of publications within the area of environment in accordance with the principles laid down in IEC Guide 123. Wherever applicable, it is the responsibility of committees to make use of environment basic publications in the preparation of their environment group and product publications. Committees can apply this document directly to products when they do not develop a product publication in the area of environment.
Base documents:
Replaced standards
IEC 60079-0:2017
Explosive atmospheres - Part 0: Equipment - General requirements
Scope: IEC 60079-0:2017 specifies the general requirements for construction, testing and marking of Ex Equipment and Ex Components intended for use in explosive atmospheres. The standard atmospheric conditions (relating to the explosion characteristics of the atmosphere) under which it may be assumed that Ex Equipment can be operated are:
-temperature –20 °C to +60 °C;
-pressure 80 kPa (0,8 bar) to 110 kPa (1,1 bar); and
-air with normal oxygen content, typically 21 % v/v.
This part of IEC 60079 and other standards supplementing this standard specify additional test requirements for Ex Equipment operating outside the standard temperature range, but further additional consideration and additional testing may be required for Ex Equipment operating outside the standard atmospheric pressure range and standard oxygen content. Such additional testing may be particularly relevant with respect to Types of Protection that depend on quenching of a flame such as ‘flameproof enclosures “d”’ (IEC 60079-1) or limitation of energy, ‘intrinsic safety “i”’ (IEC 60079-11). This seventh edition cancels and replaces the sixth edition, published in 2011. This edition constitutes a technical revision. Refer to the Forward of the document for a complete listing of the technical changes between edition 7.0 and the previous edition of the document.
-temperature –20 °C to +60 °C;
-pressure 80 kPa (0,8 bar) to 110 kPa (1,1 bar); and
-air with normal oxygen content, typically 21 % v/v.
This part of IEC 60079 and other standards supplementing this standard specify additional test requirements for Ex Equipment operating outside the standard temperature range, but further additional consideration and additional testing may be required for Ex Equipment operating outside the standard atmospheric pressure range and standard oxygen content. Such additional testing may be particularly relevant with respect to Types of Protection that depend on quenching of a flame such as ‘flameproof enclosures “d”’ (IEC 60079-1) or limitation of energy, ‘intrinsic safety “i”’ (IEC 60079-11). This seventh edition cancels and replaces the sixth edition, published in 2011. This edition constitutes a technical revision. Refer to the Forward of the document for a complete listing of the technical changes between edition 7.0 and the previous edition of the document.
Base documents:
Replaced: IEC 60079-0:2026
IEC TS 62561-8:2018
Lightning protection system components (LPSC) - Part 8: Requirements for components for isolated LPS
Scope: IEC/TS 62561-8:2018(E) specifies the requirements and tests for insulating stand-offs, used in conjunction with an air-termination system and down-conductors with the aim of maintaining the proper separation distance, and the requirements and tests for insulating down‑conductors, including their specific fasteners, able to reduce the separation distance.
Base documents:
Replaced: IEC 62561-8:2026
IEC 60079-0:2017/ISH2:2019
Interpretation Sheet 2 - Explosive atmospheres - Part 0: Equipment - General requirements
Scope: Interpretation sheet for IEC 60079-0:2017
Base documents:
Replaced: IEC 60079-0:2026
IEC 60079-0:2017/COR1:2020
Corrigendum 1 - Explosive atmospheres - Part 0: Equipment - General requirements
Scope: Corrigendum for IEC 60079-0:2017
Base documents:
Replaced: IEC 60079-0:2026
Drafts
prEN IEC 60079-13:2026
Explosive atmospheres - Part 13: Equipment protection by pressurized room "p" and artificially ventilated room "v"
Scope: This part of IEC 60079 gives requirements for the design, construction, assessment, verification and marking of rooms used to protect internal equipment as:
a) located in a Zone 1 or Zone 2, or Zone 21 or Zone 22 (an area normally requiring an Equipment Protection Level (EPL) Gb, Gc, Db or Dc) without an internal source of gas or vapour release and protected by pressurization;
b) located in a Zone 1 or Zone 2, or Zone 21 or Zone 22 (an area normally requiring EPL Gb, Gc, Db or Dc), containing an internal source of gas or vapour release and protected by both pressurization and artificial ventilation;
c) located in a Zone 2 (an area normally requiring EPL Gc) with or without an internal source of gas or vapour release and protected by artificial ventilation; or
d) located in a non-hazardous area, containing an internal source of gas or vapour release and protected by artificial ventilation.
Equipment with a minimum EPL of Gc permitted in a room located in a Zone 1 (EPL Gb) or Dc permitted in a room located in a Zone 21 (EPL Db) is not addressed in this document as it is considered not practical in the context of rooms and the equipment that might be required.
NOTE 1 Internal releases of combustible dust are not considered as neither protection by ventilation nor protection by pressurization can prevent hazardous areas from such releases.
NOTE 2 See Annex C for examples of applications.
The term "room" used in this document includes single rooms, multiple rooms, a complete building, or a room contained within a building, and includes associated ventilation duct work. A room is intended to facilitate the entry of personnel. Regions of the "room" where the protection is provided by local ventilation, for example ventilation hoods, can also be considered in the evaluation of the "room".
Enclosures designed to permit personnel to completely enter can also be considered as a room, for example a large acoustic enclosure.
Limitations in the use of protection by ventilation are specified in 7.1.1.
This document is not intended to apply to temporary structures, for example, to enable hot work to be completed in an operating plant.
NOTE 3 Despite the above intent for permanent structures, elements of this document are commonly used as guidance for temporary structures.
This document also includes requirements for related safety devices and controls necessary to ensure that artificial ventilation, purging and pressurization is established and maintained.
A room assembled or constructed on site, can be either land-based or off-shore. The room is primarily intended for installation by an end-user but could be constructed and assessed at a manufacturer’s facility, where the final construction such as ducting can be performed on site.
This document does not specify the methods that might be required to ensure adequate air quality for personnel such as asphyxiation, toxicity and temperature hazards within the room.
Additional guidance on analyser houses, asphyxiation and toxicity hazards can be found in IEC 61285. National or other regulations and requirements might also exist for the safety of personnel.
The scope does not include:
a) Protection of rooms by using an inert gas or a flammable gas.
NOTE: It is recognized that such applications are special cases but are likely to be the subject of additional, stringent engineering standards, procedures and practices.
b) Pressurized enclosures for equipment that are not intended to facilitate the entry of personnel.
NOTE: Such enclosures are addressed in IEC 60079-2.
This document supplements and modifies the general requirements of IEC 60079-0, except as indicated in Table 1. Where a requirement of this document conflicts with a requirement of IEC 60079-0, the requirement of this document takes precedence.
a) located in a Zone 1 or Zone 2, or Zone 21 or Zone 22 (an area normally requiring an Equipment Protection Level (EPL) Gb, Gc, Db or Dc) without an internal source of gas or vapour release and protected by pressurization;
b) located in a Zone 1 or Zone 2, or Zone 21 or Zone 22 (an area normally requiring EPL Gb, Gc, Db or Dc), containing an internal source of gas or vapour release and protected by both pressurization and artificial ventilation;
c) located in a Zone 2 (an area normally requiring EPL Gc) with or without an internal source of gas or vapour release and protected by artificial ventilation; or
d) located in a non-hazardous area, containing an internal source of gas or vapour release and protected by artificial ventilation.
Equipment with a minimum EPL of Gc permitted in a room located in a Zone 1 (EPL Gb) or Dc permitted in a room located in a Zone 21 (EPL Db) is not addressed in this document as it is considered not practical in the context of rooms and the equipment that might be required.
NOTE 1 Internal releases of combustible dust are not considered as neither protection by ventilation nor protection by pressurization can prevent hazardous areas from such releases.
NOTE 2 See Annex C for examples of applications.
The term "room" used in this document includes single rooms, multiple rooms, a complete building, or a room contained within a building, and includes associated ventilation duct work. A room is intended to facilitate the entry of personnel. Regions of the "room" where the protection is provided by local ventilation, for example ventilation hoods, can also be considered in the evaluation of the "room".
Enclosures designed to permit personnel to completely enter can also be considered as a room, for example a large acoustic enclosure.
Limitations in the use of protection by ventilation are specified in 7.1.1.
This document is not intended to apply to temporary structures, for example, to enable hot work to be completed in an operating plant.
NOTE 3 Despite the above intent for permanent structures, elements of this document are commonly used as guidance for temporary structures.
This document also includes requirements for related safety devices and controls necessary to ensure that artificial ventilation, purging and pressurization is established and maintained.
A room assembled or constructed on site, can be either land-based or off-shore. The room is primarily intended for installation by an end-user but could be constructed and assessed at a manufacturer’s facility, where the final construction such as ducting can be performed on site.
This document does not specify the methods that might be required to ensure adequate air quality for personnel such as asphyxiation, toxicity and temperature hazards within the room.
Additional guidance on analyser houses, asphyxiation and toxicity hazards can be found in IEC 61285. National or other regulations and requirements might also exist for the safety of personnel.
The scope does not include:
a) Protection of rooms by using an inert gas or a flammable gas.
NOTE: It is recognized that such applications are special cases but are likely to be the subject of additional, stringent engineering standards, procedures and practices.
b) Pressurized enclosures for equipment that are not intended to facilitate the entry of personnel.
NOTE: Such enclosures are addressed in IEC 60079-2.
This document supplements and modifies the general requirements of IEC 60079-0, except as indicated in Table 1. Where a requirement of this document conflicts with a requirement of IEC 60079-0, the requirement of this document takes precedence.
Base documents: 31J/416/CDV; prEN IEC 60079-13:2026
EN IEC 62271-202:2022/prA1:2026
Amendment 1 - High-voltage switchgear and controlgear - Part 202: AC prefabricated substations for rated voltages above 1 kV and up to and including 52 kV
Scope: Amendment to EN IEC 62271-202:2022
Base documents: 17C/1000/CDV; EN IEC 62271-202:2022/prA1:2026