IEC - International Electrotechnical Commission

IEC TS 61851-26:2026, in combination with IEC 61851-1 or IEC 61851-23, gives the requirements for EV supply equipment with automatic docking and undocking functions (aEVSE) at the underbody of electrically propelled road vehicles according to ISO TS 5474-5.
Use of aEVSE with the megawatt charging system is under consideration.
This document provides requirements for aEVSE with a single vehicle connector or a single socket-outlet.
Requirements for aEVSE with more than one vehicle connector or more than one socket-outlet are under consideration.
This document only applies to automatic couplers of category 3, located at the underbody of an electric vehicle.
This document does not apply to automatic coupler of category 1: using a vehicle coupler defined by IEC 62196-2, IEC 62196-3 or IEC TS 62196-3-1.
This document does not apply to automatic couplers of category 2: using an electro-mechanical interface defined by EN 50696. EN 50696 also specifies automatic couplers located at the underbody of an electric vehicle. However, these couplers only provide DC power transfer.
Interoperable communication for docking and undocking between an aEVSE and an EV, extending the communication between an EV supply equipment and an EV as specified in IEC 61851-1, IEC 61851-23, IEC 61851-24 and the ISO 15118 series, is under consideration.
This document does not cover all safety aspects related to maintenance.

IEC 60743:2013 applies to the terminology used to describe tools, devices, equipment and methods used in live working. It standardizes the name of tools, devices and equipment and permits their identification by providing definitions and illustrations. It contains some example illustrations. This third edition cancels and replaces the second edition, published in 2001, and its Amendment 1:2008.This edition constitutes a technical revision which includes the following significant technical changes with respect to the previous edition: the clause 2 has been simplified and refers directly to IEC 60050-651; some definitions have been moved to specific existing clauses. This new edition is complementary to IEC 60050-651. Different publications under the responsibility of TC 78 include terms and its definitions. IEC 60050-651 (IEV 651) provides precise, brief and correct definitions of internationally accepted concepts in the field of live working, and specifies the terms by which these defined concepts are known. Electropedia gives access to the terms and definitions of IEC 60050-651 (http://www.electropedia.org/). Each product standard gives definitions necessary for the understanding of certain terms used in a specific context. The IEC Glossary (http://std.iec.ch/glossary) gives on-line access to the information.

IEC TS 61851-27:2026, in combination with IEC 61851-1 or IEC 61851-23, gives the requirements for EV supply equipment with automatic docking and undocking functions (aEVSE) of a vehicle coupler according to IEC 62196-2, IEC 62196-3 or IEC TS 62196-3-1 for power transfer with electrically propelled road vehicles according to ISO TS 5474-5.
Use of aEVSE with the megawatt charging system is under consideration.
This document provides requirements for aEVSE with a single vehicle connector.
Requirements for aEVSE with more than one vehicle connector are under consideration.
This document only applies to aEVSE with automatic couplers of category 1: using vehicle couplers defined by IEC 62196-2, IEC 62196-3 or IEC TS 62196-3-1.
This document only specifies automatic conductive energy transfer using a vehicle connector and a vehicle inlet; it does not specify automatic conductive power transfer using a plug and a socket-outlet.
This document does not apply to aEVSE with automatic couplers of category 2: using an electro-mechanical interface defined by EN 50696.
This document does not apply to aEVSE with automatic coupler of category 3 (see IEC TS 61851-26).
EMC requirements for EV supply equipment are defined in IEC 61851-21-2.
Interoperable communication for docking and undocking between an aEVSE and an EV, extending the communication between an EV supply equipment and an EV as specified in IEC 61851-1, IEC 61851-23, IEC 61851-24 and the ISO 15118 series, is under consideration.
This document does not cover all safety aspects related to maintenance

IEC 61290-1-2:2026 applies to all commercially available optical amplifiers (OAs) and optically amplified sub-systems. It applies to OAs using optically pumped fibres (OFAs based on either rare-earth doped fibres or on the Raman effect), semiconductors (SOAs), and planar optical waveguides (POWAs). This document does not apply to polarization-maintaining optical amplifiers. This document defines uniform requirements for accurate and reliable measurements, by means of the electrical spectrum analyzer test method, of the following OA parameters, as defined in IEC 61291-1, Clause 3:
a) nominal output signal power;
b) gain;
c) reverse gain;
d) maximum gain;
e) polarization-dependent gain.
In addition, this test method provides a means for measuring the following parameters:
- maximum gain wavelength;
- gain wavelength band.
This document specifically covers single-channel amplifiers. For multichannel amplifiers, the IEC 61290-10 series applies.
NOTE 1 The applicability of the test methods described in this document to distributed Raman amplifiers is for further study.
NOTE 2 A test method for polarization-maintaining optical amplifiers is for further study.
This third edition cancels and replaces the second edition published in 2005. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) addition of information on the applicability of this document to the scope;
b) harmonization of the scope with the IEC 61290-1 series;
c) addition of safety recommendations to Clause 4 and Clause 5;
d) correction of an error in Clause 7, item e);
e) replacement of the term "wavelength measurement accuracy" with "wavelength accuracy".

IEC 63494-1:2026 specifies the safety requirements for electro-mechanical interfaces connecting lighting system devices to luminaires. These interfaces are used to mechanically connect, electrically power, and enable communication of lighting system devices on luminaires. Electro-mechanical interfaces up to and including 1 000 V AC or 1 500 V DC are included. This document specifies safety related mechanical, electrical, ambient conditions, and construction requirements for the interface components including protective covers. Specific requirements for the devices that can utilize the interface such as sensors, communication modules, cameras, etc., are not within the scope of this document.

IEC 63378-6:2026 specifies a thermal resistance and capacitance model for semiconductor packages. This model is named the digital transformation using thermal resistance and capacitance (DXRC) model. It predicts transient temperature at junction and measurement points.
This document applies to semiconductor packages such as TO-252, TO-263, and HSOP. It supports single chip packages dissipated heat from single package surface.

IEC TS 62885-1:2026 specifies the physical characteristics of test equipment and material used in tests common to several products covered by IEC 62285 series for surface cleaning appliances. In addition, it provides guidance regarding the evaluation of Wilton and other types of carpets to determine their acceptability for testing and regarding the pre-treatment of test dust.
This fourth edition cancels and replaces the third edition published in 2020.
This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) Almost all of the test equipment is adopted from IEC 62885-2:2021.
b) Test equipment and materials for wet cleaning is included.
c) A description of the verification of an in-house reference vacuum cleaner is added.
d) Information about the reference vacuum cleaner system RSB is added.

IEC TS 60825-13:2026 provides manufacturers, test houses, safety personnel, and others with practical guidance on methods to perform radiometric measurements or analyses to establish the emission level of laser energy or power in accordance with IEC 60825-1:2014. The measurement procedures described in this document are guidance for classification of laser products in accordance with IEC 60825‑1:2014. It is possible that other procedures are better or more appropriate.
Information is provided for calculating accessible emission limits (AELs) and maximum permissible exposures (MPEs), since some parameters used in calculating the limits are dependent upon other measured quantities.
This document applies to lasers, including extended sources and laser arrays. The procedures described in this document for extended source viewing conditions can yield more conservative results than when using more rigorous methods.
NOTE Work continues on more complex source evaluations and will be provided as international agreement on the methods is reached.
This first edition cancels and replaces the second edition of IEC TR 60825-13 published in 2011. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to IEC TR 60825-13:2011:
a) minor changes and additions have been made in the definitions;
b) classification flow has been updated;
c) apparent source sections have been clarified;
d) scanning has been updated;
e) more examples and useful conversions have been added to the annexes.

IEC 63601:2026 covers SiC-based PECS devices having a gate dielectric region biased to turn devices on and off. This typically refers to MOS devices such as MOSFETs and IGBTs. In this document, only NMOS (N-type MOS) devices are discussed as these are dominant for power device applications; however, the procedures apply to PMOS (P-type MOS) devices as well.
This document does not define device failure criteria, acceptable use conditions or acceptable lifetime targets. That is up to the device manufacturers and users. However, it provides stress procedures such that the threshold voltage stability over time as affected by gate bias and temperature can be demonstrated and evaluated.

IEC 60704-2-19:2026 applies to stationary freestanding and wall-mounted air cleaners for domestic and similar use, supplied from mains, d.c. voltage not exceeding 48 V or batteries. This document includes combination products, where air cleaning is combined with for example humidification, but can be used only for the air cleaning function.
This Part 2-19 is intended to be used in conjunction with IEC 60704-1:2021, Household and similar electrical appliances - Test code for the determination of airborne acoustical noise - Part 1: General requirements.

IEC TS 62786-42:2026 defines minimum requirements for AC voltage measurement used to control distributed energy resources (DER) and loads connected to distribution networks.
This document specifies the characteristics of voltage magnitude measurement to evaluate their performances (including voltage and frequency measuring range, accuracy, voltage and frequency operating range, resolution, etc).
This document describes the main use cases of voltage measurement, with associated level of performances.
This document describes the principle of functional tests to evaluate the specified characteristics and defines the influencing factors that affect these performances, under steady state or dynamic conditions.
This document defines the functional requirements applicable to voltage measurement which can be embedded inside DER or loads controller or performed as an external control system. In the case of DER, this document is a subpart of requirements which are defined in the other parts of the IEC 62786 series.
This document is applicable to DER and loads regardless of voltage level at the point of connection to the distribution grid.
This document does not specify hardware, software or a method for voltage measurement. It does not specify tests linked to environmental conditions associated to hardware devices (climatic, mechanical stress, electromagnetic compatibility test, etc).

IEC TS 63384-2:2026 addresses the quantitative assessment of power system stability and security. Its purpose is to provide guidelines encompassing the use of terms and definitions, as well as the objectives and general requirements for conducting quantitative assessments. The TS includes the classification of stability and security, classification of quantitative indices, and key considerations for implementing quantitative assessments.
The TS is applicable to various domains, including system planning, operation planning, operation control, stability control system design, and stability control decision planning, as well as software, equipment, and systems for the secure and stable operation of the power system.
The stability and security quantitative assessment techniques specified in IEC TS 63384-2 are independent of any specific software, equipment, or systems used for the secure and stable operation of the power system.

IEC TS 60364-7-725:2026 provides additional requirements for the design, erection and verification of electrical installations applicable for resilient power supply systems that must be operational in a time of disaster. It specifies additional requirements for
– generating sets,
– a circuit concerning external generating sets, and
– circuits of an installation to be supplied
so as to prevent or limit the effects of a natural disaster such as
– earthquake,
– flood damage, or
– wind hazard (e.g. tropical cyclone such as hurricane, typhoon).

IEC 60364-7-717:2026 applies to electrical installations of mobile units or transportable units.
The requirements of this document are not applicable to:
– generating sets;
– pleasure craft;
– caravans and motor caravans;
– electrical circuits and equipment for automotive purposes.
This third edition cancels and replaces the second edition published in 2009. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) The scope has been improved, providing more detail.
b) The content of Clause 717.41 has been updated following the publication of IEC 60364-4-41:2005/AMD1:2017.
c) Clauses concerning protection by automatic disconnection of the supply and additional protection have been added.
d) Figures have been simplified, updated or deleted.
e) Designation of SPD has been updated to use Tx SPD instead of Class x tested SPD.

IEC TS 62196-7:2026 specifies the safety, interoperability, compatibility requirements and the configuration standard sheets for DC charging vehicle adapters
- with a rated voltage up to 1 500 V DC;
- between vehicle connector and vehicle inlet according to IEC 62196-3;
- used to adapt configuration GG vehicle inlet to configuration AA, BB vehicle connector as specified in the IEC 62196-3:20─.
NOTE DC vehicle adapters for other configuration combinations are under consideration.
This document is not applicable to:
- the adapter between the EV socket-outlet and the EV plug;
- the adapter between the AC vehicle connector and the AC vehicle inlet.
This document does not cover all safety aspects related to maintenance.

IEC 60445:2021 applies to the identification and marking of terminals of electrical equipment such as resistors, fuses, relays, contactors, transformers, rotating machines and, wherever applicable, to combinations of such equipment (e.g. assemblies), and also applies to the identification of terminations of certain designated conductors. It also provides general rules for the use of certain colours or alphanumeric notations to identify conductors with the aim of avoiding ambiguity and ensuring safe operation. These conductor colours or alphanumeric notations are intended to be applied in cables or cores, busbars, electrical equipment and installations. This basic safety publication is primarily intended for use by technical committees in the preparation of standards in accordance with the principles laid down in IEC Guide 104 and ISO/IEC Guide 51. It has the status of a basic safety publication in accordance with IEC Guide 104.
IEC 60445:2021 cancels and replaces the sixth edition published in 2017. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) the definitions have been aligned with IEC 60050-195:2021 and IEC 60050-826;
b) the provisions for colour to be used for identification of certain designated conductors are made requirements and not only recommendations;
c) introduction of a new subclause on marking of protective terminals for multiple power supply inputs on equipment.

IEC TS 63042-401:2026, which is a Technical Specification, gives guidance on UHV AC substation maintenance considering system-oriented maintenance issues of UHV AC transmission systems.
It is based on the development and on-site practice of maintenance technology involved in UHV AC transmission systems. It applies to power system planners, equipment suppliers, engineering contractors, maintenance staff and power grid operators.

IEC TS 63379:2026 is applicable to vehicle couplers with pins and contact-tubes of standardized configuration, herein also referred to as "accessories", and to cable assemblies intended for use in electric vehicle conductive charging systems which incorporate control means, with rated operating voltage not exceeding 1 500 V DC and a rated current up to and including 3 000 A that employ:
a) thermal sensing, or
b) thermal transport and thermal sensing,
with the system architecture described in 4.100.

IEC 63350:2026 specifies generic requirements for creating a digital system that is used for measuring the characteristics of visually detectable performance, such as browning intensity and lightness.
It defines the metrological requirements of this digital system and demonstrates the procedures for compliance. The digital system contains the measuring instrument, the software, and the reference materials necessary to realize the measurement process.
References to this document can be made by a customer when specifying the digital system and by the suppliers when specifying products offered.
Interested parties can agree to use this document as an input for satisfying measurement management system requirements in any activities.
This first edition cancels and replaces IEC TS 63350, published in 2022.
This edition includes the following significant technical changes with respect to IEC TS 63350:
a) Revision of 4.2: movable items (e.g., containers, jigs, reference objects) can now be present in the assessment area provided that mitigation measures are applied and periodic verification against known reference artefacts is documented; the requirement to keep the assessment area as constant as possible is retained.
b) Addition of new supporting document: Note in 5.1 introduces the Fogra 52 profile (included in the reference colour supporting documents from the IEC SC 59K supporting documents web site) which is referencing the conditions ISO 12647-7 and ISO 12647-2.
c) Four additional reference shades with hue angles > 130° are introduced in 5.3 for calibration (to enable accurate pixel‑wise hue‑angle measurement). These do not create new shade classes.
d) Revision of 6.2: Calculation of sampling positions remains unchanged, but the procedure changes to reflect better the actual test scenario.
e) Added reporting of input image colour channel data (7.7).

IEC 62841-2-24:2026 applies to oscillating multifunction tools.
This document is to be used in conjunction with IEC 62841-1:2014 and IEC 62841-1:2014/AMD1:2025.
This document supplements or modifies the corresponding clauses in IEC 62841-1, so as to convert it into the IEC Standard: Particular requirements for hand-held oscillating multifunction tools.
Where a particular subclause of IEC 62841-1 is not mentioned in this document, that subclause applies as far as reasonable. Where this document states "addition", "modification" or "replacement", the relevant text in IEC 62841-1 is to be adapted accordingly.
The attention of National Committees is drawn to the fact that equipment manufacturers and testing organizations may need a transitional period following publication of a new, amended or revised IEC publication in which to make products in accordance with the new requirements and to equip themselves for conducting new or revised tests.
It is the recommendation of the committee that the content of this publication be adopted for implementation nationally not earlier than 36 months from the date of publication.

IEC 62841-4-9:2026 applies to rechargeable battery-powered motor-operated chain saws for tree service, hereinafter referred to as chain saws or machines, having a maximum mass of 5,0 kg. The mass includes the heaviest detachable battery pack(s), if any, as described in IEC 62841-1:2014, K.8.14.2 e) 2), but excludes the guide bar, saw chain and saw chain lubricant. Chain saws covered by this document are intended to be used for pruning and dismantling standing tree crowns.
The chain saws covered by this document are designed only to be operated with the right hand on the rear handle and the left hand on the front handle.
This document does not apply to
– chain saws supplied by mains power or power from non-isolated sources that permit the machine to be used while connected to such power supplies; or
– chain saws supplied by integral batteries; or
– chain saws for cutting wood as covered by IEC 62841-4-1; or
– chain saws designed for use in conjunction with a guide-plate and riving knife or in any other way such as with a support or as a stationary or transportable machine; or
– pole-mounted pruners; or
NOTE 1 Pole-mounted pruners are covered by IEC 62841-4-10.
– pruning saws.
NOTE 2 Pruning saws will be covered by a future part of IEC 62841-4.
The maximum rated voltage for machines and battery packs is 75 V d.c.
Battery machines covered by this document are not considered to be class I tools, class II tools or class III tools and therefore are not required to have basic insulation, supplementary insulation or reinforced insulation. Electric shock hazard is considered to exist only between parts of opposite polarity.
This document deals with the hazards presented by machines which are encountered by all persons in the normal use and reasonably foreseeable misuse of the machines.
When evaluating a rechargeable battery pack for protection against electric shock during charging, creepage distances, clearances and distances through insulation, the relevant requirements of this document are applicable with the battery pack fitted to the intended charger.
Since rechargeable battery packs for machines are submitted to different use patterns (such as rough use, high charging and discharging currents), their safety can be evaluated only by this document and not by using other standards for rechargeable battery packs, such as IEC 62133-1:2017 or IEC 62133-2:2017, unless otherwise indicated in this document. All relevant aspects related to the safety of rechargeable batteries are addressed in this document, such that the requirements of IEC 62133-1:2017 or IEC 62133-2:2017 are not required to be separately applied.
When evaluating the risk of fire associated with rechargeable battery packs for machines, consideration has been given to the fact that these battery packs are unattended energy sources and have been evaluated as such in this document. Requirements in other standards regarding the risk of fire due to the charging of these battery packs are therefore considered to be fulfilled.
This document also addresses requirements covering the use of lithium-ion cells employed in battery systems in machines. The following is considered within the context of these requirements:
– These requirements address the risk of fire or explosion of these batteries and not any possible hazards associated with toxicity nor potential hazards associated with transportation or disposal.
NOTE 3 IEC 62281:2019 covers the safety aspects of lithium-ion batteries during transport.
– Battery systems covered by these requirements are not intended to be serviced by the end user.
– These requirements are intended to provide comprehensive evaluation of a battery only if used in products covered by this document.
– These requirements address the safety of lithium-ion battery systems during storage and use including discharge and charge. These requirements are only considered to be supplementary requirements in regard to battery charger fire and e

IEC TS 62786-2:2026 supplements IEC TS 62786-1, and specifies requirements for the connection of the solar photovoltaic energy system or photovoltaic generating system (PV system) with an electric power network, or the network. This document covers all sizes of PV systems connected to low voltage or medium voltage power networks and gives typical requirements for various sizes of PV systems.
In this document, requirements for grid-connected PV systems are applied to those categorized as grid tied, grid tied with storage and grid tied with storage and back up. Mini-grid and Micro-grid are out of scope. Those types of PV systems with possible elements are described in 4.3.
This document specifies the following technical requirements for the PV system:
- reference points of requirements,
- elements and configuration,
- basic operation,
- protection and fault ride through function,
- power control and grid support function,
- electromagnetic compatibility for low frequency conducted disturbances,
- information exchange for remote monitoring, control, and configuration.

IEC 60364-7-711:2026 applies to:
• electrical installations of temporary structures erected for exhibitions, shows, stands and fairgrounds for entertainment related purposes, and
• temporary electrical installations supplying such temporary structures and amusement devices for entertainment related purposes.
This third edition cancels and replaces the second edition published in 2018 and the first edition of IEC 60364-7-740 published in 2000. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) merging of IEC 60364-7-711 and IEC 60364-7-740;
b) removal of requirements for installations in locations intended for livestock as they are covered by IEC 60364-7-705

IEC 61332:2026 specifies classification rules for soft ferrite materials used in inductive components (inductors and transformers) fulfilling the requirements of the electronic industries.
This document addresses the following issues for ferrite suppliers and users:
- cross-reference between materials from multiple suppliers;
- assistance to users in understanding the published technical data in catalogues when comparing multiple suppliers;
- guidance to users in selecting the most applicable material for each application;
- setting of nomenclature for IEC standards relating to ferrite;
- establishing uniformed benchmarks for manufacturers for performance in new development of materials.
The numerical values given in this document are typical values of the parameters (properties) of the related materials. Direct translation from the material specification into the core specification is not always easy or possible.
Every detailed material and core specification should be agreed upon between suppliers and users.
This edition includes the following significant technical changes with respect to the previous edition:
a) added PW2c and PW3c in subclasses PW2 and PW3 respectively in Table 3;
b) added the column of BS in Table 3;
c) added a smaller size of the test core (Ø 12,7 mm × Ø 7,5 mm × 7 mm) for higher measuring frequency (≥ 500 kHz) in Table 3.

IEC 62343: 2026 Amendment 1

IEC 62343:2023 applies to all commercially available optical dynamic modules and devices. It describes the products covered by the IEC 62343 series, defines terminology, fundamental considerations and basic approaches. The object of this document is to:
- establish uniform requirements for operation, reliability and environmental properties of dynamic modules (DMs) to be implemented in the appropriate DM standard, and
- provide assistance to the purchaser in the selection of consistently high-quality DM products for their particular applications, as well as in the consultation of the appropriate specific DM standard(s).
This document covers performance templates, performance standards, reliability qualification requirements, hardware and software interfaces and related testing methods. Since a dynamic module integrates an optical module/device, printed wiring board, and software/firmware, the standards developed in the series will mimic appropriate existing standards. On the other hand, since "dynamic module" is a relatively new product category, the dynamic module standards series will not be bound by the existing practices where requirements differ.The safety standards as related to dynamic modules are mostly optical power considerations, which is covered by the IEC 60825 series (see Clause 6). This third edition cancels and replaces the second edition published in 2017. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- addition of terms and definitions for optical multicast switches (3.8);
- revision of Clause 4, listing the requirements for standards in the IEC 62343 series;
- addition of Clause 6 (Safety requirements).

IEC 63372:2026 describes principles and methodologies, specifies requirements and provides guidance for quantification and communication of carbon footprint a product (CFP), emission reductions and avoided emissions from electric and electronic (EE) products and systems. This document is also applicable to product-related GHG projects.
The GHG quantification such as CFP is based on life cycle assessment (LCA) methods.
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.
This first edition of IEC 63372 cancels and replaces IEC TR 62725:2013 and IEC TR 62726:2014, which have been technically revised.
This edition includes the following significant technical changes with respect to the previous edition:
a) updating and enhancing content related to carbon footprint of a product to align with new or updated reference standards;
b) including product and system in quantification of GHG emission reductions;
c) adding the content related to avoided emissions including use cases in Annex D.

IEC 60747-5-13:2021 provides the accelerated test method to assess effects of the tarnishing of silver and silver alloys used for LED packages due to hydrogen sulphide. Particularly, this test method is intended to give information on silver and silver alloy tarnishing effects to the luminous/radiant flux maintenance of LED packages. Additionally, this test method can give information on electric performances of LED packages due to corrosion of silver and silver alloys. The object of this test is to determine the influence of atmospheres containing hydrogen sulphide on parts of LED packages made of: silver or silver alloy; silver or silver alloy protected with another layer; other metals covered with silver or silver alloy. Testing other degradations that are susceptible to affect luminous/radiant flux maintenance and/or electric performance (e.g. degradation of copper or silicone parts) is not the object of this test. This test might not be suitable as a general corrosion test, i.e. it might not predict the behaviour of flux and/or electric characteristics and connections in industrial atmospheres. This document is applicable to LED packages for lighting applications only if referenced by an IEC SC 34A document.

IEC 63138-4:2025, which is a Sectional Specification (SS), provides information and rules for the preparation of Detail Specifications (DS) for type L32-4 and L32-5 circular connectors with four RF channels and five RF channels, as well as a detailed specification of the blank format.
The L32-4 and L32-5 circular connectors with 50 Ω nominal impedance has four RF channels and five RF channels which can be engaged and disengaged at the same time. They are characterized by threaded coupling mechanisms, anti-misinsertion mechanism, and the operating frequency of each channel is up to 4 GHz. These connectors have been widely used in mobile communication system like TD-SCDMA and TD-LTE and can also be used in some similar equipment.
This document also specifies mating face dimensions for general connectors (grade 2), gauging information and tests selected from IEC 63138-1, applicable to all Detail Specifications relating to type L32 4 and L32-5 circular connectors.
This document cancels and replaces IEC 61169-59:2017.
This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to IEC 61169-59:2017:
a) use of IEC 63138-1:2019 as its generic specification instead of using IEC 61169-1:2013;
b) all the subclauses and test methods are in line with IEC 63138-1:2019;
c) dimension "g" in Table 3, Table 4, Table 7 and Table 8 has been changed from "0,00 min. to 0,8 max." to "1,6 min. to 2,1 max.".

IEC 60034-26:2026 is available as IEC 60034-26:2026 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60034-26:2026 describes the effects of unbalanced voltages on the performance of three-phase cage induction motors. This second edition cancels and replaces the first edition published in 2006. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) clarification that voltages are line-to-line voltages in Clause 4, Annex A and Annex B;
b) addition of design NE according to IEC 60034-12 in Clause 4.

CISPR TR 30-3:2026 which is a Technical report , details the construction and parameters of a reference luminaire, a measurement procedure and conditions for assessment of the radio disturbance characteristics of electronic control gears (ECG) for LED light sources applied inside. This document is limited to ECGs (also called “control gears”) as well as end-user replaceable ECGs with the following characteristics or applications:
- applied in luminaires with safety protection class I;
NOTE This means that the mains interface of the ECG itself can have either a protective earth (PE) or a functional earth (FE) terminal. For details, see 4.6 and Table 2.
linear form factor, i.e. fits within the space provision defined in Figure A.1 a).
- ECGs with a rated output power less than 360 W.
Excluded from the scope of this document are
- ECGs for applications that are excluded in CISPR 15:2018 and CISPR 15:2018/AMD1:2024, and
- control gear with only L, N input terminals (without PE terminal).

IEC 60721-3-5:2026 classifies the groups of environmental parameters and their severities to which a product, not forming part of the vehicle, is subjected when installed on or in a ground vehicle. Such products are for example radios, communication systems, fare meters, flow meters for liquids transported by the vehicle, for example milk, petroleum products, etc. Vehicles where products can be permanently or temporarily installed include
- road vehicles: passenger cars, commercial vehicles, special vehicles, towing vehicles, trailers, mopeds, motorcycles,
- rail vehicles: trains, trams,
- tracked vehicles: excavators, cranes, rubber tracked vehicles,
- overland vehicles: four-wheel drive cars, tractors, snow scooters,
- handling and storage vehicles: fork-lift trucks (manual and robot), luggage transporters, and
- self-propelled machinery: diggers, harvesters.
This third edition cancels and replaces the second edition, published in 1997. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) most classes have been replaced by completely new classes based on the use of additional information obtained from referenced Technical Reports;
b) Table 1 through to Table 7 have been reviewed and updated;
c) the content of Annex A and Annex B has either been incorporated into the main body of the document or deleted.

IEC 62358:2026 provides standard AL values (inductance factors) and their tolerances of Pot, RM, ETD, E, EER, EP, PQ, PM, EC, EFD and low-profile gapped ferrite cores.
This edition includes the following significant technical changes with respect to the previous edition:
a) addition of AL value (inductance factor) and its tolerance for PM-cores;
b) addition of AL value (inductance factor) and its tolerance for EC-cores;
c) addition of AL value (inductance factor) and its tolerance for EFD-cores.

IEC TR 63436:2026 explains the setting parameters of insulation monitoring devices (IMDs) and how to interpret these measurements through plotted curves. Some examples of injection methods are also proposed.
The examples given in this document consider the situation of an insulation fault in an installation or equipment (motors, enclosure, cables, etc.) creating a resistive path to earth and calculate the touch voltage. It does not consider a person making direct contact with a live conductor in an IT grid.

IEC TR 63179:2026, which is a Technical Report, provides technical information for planning high-voltage direct current (HVDC) systems with line-commutated converters (LCC), voltage sourced converters (VSC), or both. It provides general principles for deciding between HVDC and AC transmission systems, as well as processes and methods for preliminarily defining the HVDC transmission scheme, including selection of converter type and key parameters, grid stability analysis, and technical-economic comparison among various solutions. In addition, this document gives the objectives to be achieved in the planning phase.
This document is applicable for planning a point-to-point or a back-to-back HVDC system.
This document can also be used for DC grid systems (including multi-terminal HVDC systems) as a reference.
This document is not exhaustive. It is possible that there are other specific aspects, that are particularly important for a specific HVDC project.

IEC 63479-3:2026 describes the infotainment services for public vehicles (PVIS) framework, including the functional reference models and the information flows for functional operations.

IEC 62862-4-2:2026 specifies the technical requirements and test methods for the heliostat field control system of solar power tower plants.
This document provides the technical requirements of function, performance, and safety constraints of the heliostat field control system, and is applicable to the heliostat field control system of solar power tower plants.
This document includes procedures for testing the functionality and performance requirements of the heliostat field control system. It describes the test methods, steps, conditions, and required instruments.

IEC 62541-14:2026 defines the PubSub communication model. It defines an OPC UA publish subscribe pattern which complements the client server pattern defined by the Services in IEC 62541-4. See IEC 62541-1 for an overview of the two models and their distinct uses.
PubSub allows the distribution of data and events from an OPC UA information source to interested observers inside a device network as well as in IT and analytics cloud systems.
This document consists of
• a general introduction of the PubSub concepts,
• a definition of the PubSub configuration parameters,
• mapping of PubSub concepts and configuration parameters to messages and transport protocols,
• and a PubSub configuration model.
This second edition cancels and replaces the first edition published in 2020. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) Addition of a “Quantity Model” which can be referenced from EngineeringUnit Properties. The model defines quantities and assigned units. In addition it provides alternative units and the conversion to them.
b) Addion of rules for ValuePrecision Property:
• can also be used for other subtypes like Duration and Decimal.
• rules have been added when ValuePrecision has negative values.

IEC 60352-7:20205 is applicable to spring clamp connections made with stripped wire of the following types and sizes according to IEC 60228 or IEC 60189-3, without further preparation.

IEC 62541-24:2026 specifies an OPC UA information model to expose information, at what dates and times specific actions are executed by the OPC UA Server. Those schedules can optionally also be manipulated via the information model.
The schedule defines on which dates they are active, and can also reference global calendars representing specific dates, for example public holidays. In addition, the schedule defines times and actions that will be executed at that time. The model defines writing Variables and calling Methods but can be extended to other actions as well.
The NamespaceUri for all NodeIds defined in this document is defined in Annex A.

IEC TR 62316:2026 which is a Technical report, provides guidance on the interpretation of backscattering traces, as obtained by traditional optical time domain reflectometers (OTDRs) for single-mode fibres. This document does not cover Polarization OTDRs. Also, backscattered power effects are discussed in case of unidirectional trace. Full description of the test measurement procedure can be found in Annex C of IEC 60793‑1‑40:2024. This fourth edition cancels and replaces the third edition published in 2017. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) update of the fibre types;
b) addition of information as regards attenuation uniformity.

IEC 62047-4:2026 describes generic specifications for micro-electromechanical systems (MEMS) made by semiconductors, which are the basis for specifications given in other parts of this series for various types of MEMS applications such as sensors, RF MEMS, optical MEMS, bio-MEMS, micro TAS, and power MEMS. This document specifies general procedures for quality assessment and establishes general principles for describing and testing of electrical, optical, mechanical and environmental characteristics. This part of IEC 62047 aids in the preparation of standards that define devices and systems made by micromachining technology, including but not limited to, material characterization and handling, assembly and testing, process control and measuring methods. MEMS described in this document are basically made of semiconductor material. However, the statements made in this document are also applicable to MEMS using materials other than semiconductor, for example, polymers, glass, metals and ceramic materials.
This edition includes the following significant technical changes with respect to the previous edition:
a) in the Scope, optical MEMS, bio-MEMS, micro TAS, and power MEMS for various types of MEMS applications were included;
b) MEMS categories and terms in Table 1 were slightly modified such consumer electronics and automotive were added that in application technology.

IEC 60794-1-131:2026 describes the test procedures used to establish uniform requirements for microduct used to install optical fibre cables by blowing technique for the mechanical property - microduct inner clearance test. This document applies to microduct for use in optical fibre cable installation by blowing.
NOTE Throughout the document, the wording “optical cable” can also include optical fibre units, microduct fibre units, etc.
This first edition cancels and replaces Method E31 of the first edition of IEC 60794-1-21 published in 2015, Amendment 1:2020. This edition constitutes a technical revision. edition includes the significant technical changes with respect to IEC 60794‑1‑21:2015/AMD1:2020:
a) Specification of Method E31.

IEC 62541-5:2026 This edition includes the following significant technical changes with respect to the previous edition:
a) Annex B has been removed and used to create IEC 62451-16;
b) Annex C has been removed and used to create IEC 62451-20;
c) currency information model has been added;
d) information model for Interfaces and AddIns has been added;
e) information model for Method Metadata has been added;
f) MaxSessions, MaxSubscriptions, and MaxMonitoredItems have been added to capabilities;
g) information model for ordered list of objects has been added;
h) PortableQualifiedName and PortableNodeId DataTypes have been added;
i) UriString DataType has been added;
j) SemanticVersionString DataType has been added;
k) AssociatedWith Reference Type has been added;
l) ConfigurationVersion Property has been added to NamespaceMetadataType;
m) AuditClientEventType and AuditClientUpdateMethodResultEventType have been added;
n) ModelVersion has been added to NamespaceMetadataType;
o) NoTransparentBackupRedundancyType has been added to support a Primary/Standby use case;
p) BitFieldType and BitFieldDefinitionType have been added.
This fourth edition cancels and replaces the third edition published in 2020. This edition constitutes a technical revision.