IEC - International Electrotechnical Commission

IEC 63316:2026 prescribes safeguards, test methods and compliance requirements intended to reduce the risk of electrical shock and fire associated with voltage and current at voltages greater than 60 V DC and 60 V AC.
This document applies to equipment ports intended to supply and receive operating power from communications equipment ports using communication wires and cables. It covers particular requirements for circuits that are designed to transfer AC or DC power from a power sourcing equipment (PSE) (3.1.2) to a powered device (PD) (3.1.3), including repeaters, amplifiers, Optical Network Units, Remote DSLAMs, service provider terminating equipment, remote telecommunications cabinets and equipment, and midspan passive equipment connected to the PSE (3.1.2) and PD (3.1.3).
The power transfer of equipment ports covered by this document uses non-mains AC voltage or non-mains DC voltage above 60 V DC classified as ES2 according to 5.2.1.2 of IEC 62368-1:2023 or, in some very controlled cases, classified as ES3 according to IEC 62368-1:2023.
EXAMPLES
- DC power transfer using voltages above 60 V DC but ≤ 120 V DC, classified as ES2;
- Some telecommunications networks where the voltage was formerly called TNV-3 (see IEC 62368-1:2023, Table W.3), typically used for line, span or express powering outside North America, Long Range Reverse Power Feeding, HDSLx line powering ISDN, Line Powering Primary Rate E1;
- Some North American telecommunications networks between the utility service providers´ PSE (3.1.2) and service providers side of the PD (3.1.3) at the PNI (3.1.8);
- For DC power transfer using voltages ≥ 120 V DC at ES3: RFT circuits and the associated telecommunications network equipment and cabling used by communications service providers and communications utilities (for example, line powered E1/T1, HDSLx, SHDSLx, xDSL, repeaters, and telecommunications line powering up or line powering down converters as applicable), Optical Network Units, remote DSLAMs, etc. These RFT circuits are used between the utility service providers PSE (3.1.2) and service providers side of the PD (3.1.3) at the PNI (3.1.8). The customer facing ports of this equipment are at voltage not exceeding 60 V DC and are covered by IEC 62368-1:2023, see Annex A for deployment topologies;
- For AC/DC remote powering voltage above ES1 over coaxial cable in circuits used by cable television utility service providers for repeaters, amplifiers, Optical Network Units. The customer facing ports of this equipment are at voltage not exceeding 60 V DC that are covered by IEC 62368-1:2023.
NOTE 1 Any communications cable that permits power transfer between communication equipment is considered a communication cable even if communication does not take place. For example, a line powering up or line powering down converters as applicable used to power remote telecommunications equipment, can provide limited communications RFT power and not necessarily any superimposed data or signalling.
This document does not cover equipment interfaces within the scope of IEC 63315.
NOTE 2 IEC 63315 covers equipment intended to either supply or receive charging, or operating power from ICT interfaces using ICT wires and cables such as PoE, USB, HDMI, etc, or any of these combined.
This document does not cover ringing signals that are in the scope of IEC 62368-1 or in the scope of IEC 62949:2017.
This document does not cover traditional telecommunications technologies which operate at voltages not exceeding 60 V DC (circuits classified as ES1 according to 5.2.1.1 of IEC 62368-1:2023 and Table ID1a, 1b, or 1c in Table 13 of IEC 62368-1:2023) with or without ringing signals (classified as ES2 according to 5.2.1.1 of IEC 62368-1:2023 and external circuit ID1a, 1b, or 1c in Table 13 of IEC 62368-1:2023). Examples of traditional telecommunications technologies include Analogue Telephony, ISDN, T1, E1, VDSL, SHDSL, DDS, etc.
This document does not cover communications over ma

IEC 63458-1:2026 contains safety-related requirements for high pressure water jet units with drives of all kinds (e.g. electric motor, internal combustion engine, air and hydraulic) in which pumps are used to generate pressure. This document deals with all significant hazards, hazardous situations and events arising during assembly, erection, operation and servicing relevant to high pressure water jet units, when they are used as intended and under conditions of misuse which are reasonably foreseeable by the manufacturer. All references to high pressure water jet units within this document include machines for one or more of the following industrial applications:
– cleaning;
– surface preparation;
– material removal;
– readjustment of concrete;
– cutting.
This document applies to mobile and fixed high pressure water jet units, in which the water pressure is generated by a pressure generator/pump and in which the maximum allowable working pressure is more than the upper limit fixed in the scope of IEC 60335-2-79 (35 MPa is currently the upper limit for machines covered by IEC 60335-2-79).
This document does not cover:
– high pressure cleaners which are dealt with in IEC 60335-2-54;
– additional hazards due to the incorporation of high pressure water jet units into other process-technology machines;
– specific hazards associated with explosive atmospheres, use on ships or ambient temperatures outside the range 5 °C to 40 °C;
– hazard due to the nature of liquids used for jetting, other than that due to pressure;
– hazards associated with the drives or specific hazards due to any heat generation function. However, the hazards due to high temperatures of touchable surfaces are dealt with;
– high pressure water jet units which are manufactured before the date of its publication as IEC standard;
– high pressure water jet hoses which are covered by IEC 63458-2;
– high pressure water jet spraying device which are covered by IEC 63458-3;
Tests according to this document are type tests unless they relate to routine (informative) tests to be carried out during series manufacture.
Compliance with IEC 63458-1, IEC 63458-2 and IEC 63458-3 provides the full requirements for high pressure water jet machines.

IEC 63458-2:2026 applies to hoses, hose lines and connectors intended to be used with high-pressure water jet units within the scope of IEC 63458-1. This document deals with all significant hazards, hazardous situations and events relevant to the equipment in the scope, when it is used as intended and under conditions of misuse which are reasonably foreseeable by the manufacturer. This document deals with safety requirements to minimize the significant hazards which can arise from assembling, operating and servicing of hoses, hose lines and connectors for use with high pressure water jet machines. The hazard due to scalding from hot liquid or from irritation / burning of any added chemicals is not covered in this document.
Compliance with IEC 63458-1, IEC 63458-2 and IEC 63458-3 provides the full requirements for high pressure water jet machines.

IEC/IEEE TR 63572:2026 describes the computation and measurement techniques and test approaches for evaluating the local peak absorbed power density (pAPD) and peak spatial average absorbed (epithelial) power density (psAPD) induced in a human body from a wireless device transmitting in close proximity to the user at frequencies between 6 GHz and 300 GHz.
This document provides information on the testing of portable devices transmitting at distances close to the human body, such as mobile phones, tablets, wearable devices, etc. The information in this document is also relevant to exposure in the close proximity of base stations.

IEC 63458-3:2026 contains safety-related requirements for spraying devices for high pressure water jet units with drives of all kinds (e.g. electric motor, internal combustion engine, air and hydraulic) in which pumps are used to generate pressure. This document deals with all significant hazards, hazardous situations and events arising during assembly, erection, operation and servicing relevant to spraying devices for high pressure water jet units, when they are used as intended and under conditions of misuse which are reasonably foreseeable by the manufacturer. All references to spraying devices for high pressure water jet units within this document include machines for one or more of the following industrial applications:
– cleaning;
– surface preparation;
– material removal;
– readjustment of concrete;
– cutting.
This document applies to spraying devices for mobile and fixed high pressure water jet units, in which the water pressure is generated by a pressure generator/pump and in which the maximum allowable working pressure is more than the upper limit fixed in the scope of IEC 60335-2-79 (35 MPa is currently the upper limit for machines covered by IEC 60335-2-79).
This document does not cover:
– high pressure cleaners which are dealt with in IEC 60335-2-54;
– additional hazards due to the incorporation of high pressure water jet units into other process-technology machines;
– specific hazards associated with explosive atmospheres, use on ships or ambient temperatures outside the range 5 °C to 40 °C;
– hazards due to the nature of liquids used for jetting, other than that due to pressure;
– hazards associated with the drives or specific hazards due to any heat generation function. However, the hazards due to high temperatures of touchable surfaces are dealt with;
– high pressure water jet units which are manufactured before the date of its publication as IEC;
– high pressure water jet hoses which are covered by IEC 63458-2.
Tests according to this document are type tests unless they relate to routine (informative) tests to be carried out during series manufacture.
Compliance with IEC 63458-1, IEC 63458-2 and IEC 63458-3 provide the full requirements for high pressure water jet machines.

IEC 61788-15:2026 describes measurements of the intrinsic surface impedance (Zs) of HTS films at microwave frequencies by a modified two-resonance mode dielectric resonator method. The object of measurement is to obtain the temperature dependence of the intrinsic Zs at the resonant frequency f0.
The frequency and thickness range and the measurement resolution for the Zs of HTS films are as follows:
- frequency: up to 40 GHz;
- film thickness: greater than 50 nm;
- measurement resolution: 0,01 mΩ at 10 GHz.
It is crucial that the Zs data at the measured frequency, and that scaled to 10 GHz be reported for comparison, assuming the f2 rule for the intrinsic surface resistance, Rs (f  This edition includes the following significant technical changes with respect to the previous edition:
- informative Annex B, combined relative standard uncertainty in the intrinsic surface impedance is added;
- the terms, ‘precision and accuracy’, are replaced with uncertainty;
- results from a round robin test are added.

IEC TR 62271-321:2026 relates to high-voltage switchgear and controlgear for all rated voltage levels above 1 kV AC and 1,5 kV DC and assemblies thereof and provides materials for the reference dictionary for all products covered by the IEC 62271 series.
This dictionary is a preliminary work which can be used to facilitate exchanges in digital format of data related to high-voltage switchgear and controlgear components, devices, equipment, and assemblies of the power systems.
Such a dictionary improves the interoperability of the power systems required for these data exchanges along the power system lifetime and over its life cycle.
Each property has an unambiguously defined meaning and name, and where relevant, a defined value list, a defined format, and a defined unit.
This document defines, digitalizes and then summarizes the properties related to high-voltage switchgear and controlgear nameplates and information usually exchanged during the enquiries, tenders, and orders life phases defined by IEC TC 17 standards of physical elements.
The intention is not to cover manufacturer specific features.
The intention is not to cover IEC TC 17 standards dealing only with assessment methodology (calculation, tests, rules, etc.).

IEC 62061: 2026 Amendment 2

IEC 62061:2021 specifies requirements and makes recommendations for the design, integration and validation of safety-related control systems (SCS) for machines. It is applicable to control systems used, either singly or in combination, to carry out safety functions on machines that are not portable by hand while working, including a group of machines working together in a coordinated manner.
This document is a machinery sector specific standard within the framework of IEC 61508 (all parts).
The design of complex programmable electronic subsystems or subsystem elements is not within the scope of this document.
The main body of this sector standard specifies general requirements for the design, and verification of a safety-related control system intended to be used in high/continuous demand mode.
This document:
– is concerned only with functional safety requirements intended to reduce the risk of hazardous situations;
– is restricted to risks arising directly from the hazards of the machine itself or from a group of machines working together in a coordinated manner;
This document does not cover
– electrical hazards arising from the electrical control equipment itself (e.g. electric shock - see IEC 60204-1);
– other safety requirements necessary at the machine level such as safeguarding;
– specific measures for security aspects – see IEC TR 63074.
This document is not intended to limit or inhibit technological advancement.
IEC 62061:2021 cancels and replaces the first edition, published in 2005, Amendment 1:2012 and Amendment 2:2015. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
– structure has been changed and contents have been updated to reflect the design process of the safety function,
– standard extended to non-electrical technologies,
– definitions updated to be aligned with IEC 61508-4,
– functional safety plan introduced and configuration management updated (Clause 4),
– requirements on parametrization expanded (Clause 6),
– reference to requirements on security added (Subclause 6.8),
– requirements on periodic testing added (Subclause 6.9),
– various improvements and clarification on architectures and reliability calculations (Clause 6 and Clause 7),
– shift from "SILCL" to "maximum SIL" of a subsystem (Clause 7),
– use cases for software described including requirements (Clause 8),
– requirements on independence for software verification (Clause 8) and validation activities (Clause 9) added,
– new informative annex with examples (Annex G),
– new informative annexes on typical MTTFD values, diagnostics and calculation methods for the architectures (Annex C, Annex D and Annex H).

IEC PAS 63621:2025 provides a framework for the data life cycle processes for management of data used to train, test or validate an AI model that is part of a medical device.
For data acquisition and management lifecycle the following considerations apply, amongst others: data suitability, data quality and integrity insurance, data privacy and security, data governance and documentation, data sampling and bias mitigation, data versioning and traceability, data storage and infrastructure, data access and sharing, and data labelling and annotation.
This document outlines the requirements for the data lifecycle, covering stages from planning and acquisition to usage and decommissioning. It emphasizes maintaining data quality, including aspects such as dataset classification, data annotations, traceability, metadata comprehensiveness, representativeness, and validity periods.
The scope is limited to the high-level process concepts applicable across medical specialties and device types and does not include specific requirements that can be covered by modality- or device-specific standards documents.
This document outlines the additional requirements for a quality management system for data management, where an organization demonstrates its capability to manage data in accordance with applicable medical device guidance and standards. Organizations can be involved in one or more stages of the life-cycle, including design and development, production, storage and distribution, installation, or servicing and maintenance of a medical device that incorporates AI. This document can also be used by suppliers or external parties that provide data, including quality management system-related services to such organizations.

IEC 61254:2026 applies to men's electric shavers and their trimmers for household use.
This document deals with the methods for evaluating user experience and user satisfaction, in a subjective way, for men's electric shavers and their trimmers with a rated voltage not greater than 250 V.
This document does not specify safety or performance requirements.
This second edition cancels and replaces the first edition published in 1993. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) change in standard title and scope (Title and Clause 1);
b) addition of the definition of user experience and user satisfaction (3.5, 3.6);
c) modification of the list of evaluations (Clause 4);
d) introduction of evaluation of user satisfaction for a particular electric shaver (Clause 6);
e) removal of testing measurement in objective way, such as measuring methods for dimensions, operation time and gravimetric analysis of the difference in closeness of shave;
f) modification of questionnaires in Annex A.

IEC 63413:2026 provides guidance and establishes requirements for the qualification of I&C platforms, according to IEC nuclear standards, aimed to be used in nuclear applications important to safety. Qualification of an I&C platform (also called pre-qualification or generic qualification) is performed as a generic activity outside the framework of a plant-specific application project. Platform qualification aims to fulfil in an anticipated manner all requirements leading to an I&C platform fully suitable for the implementation of a plant-specific application project.
The platform qualification covers consequently all I&C platform specific aspects including hardware, software, HPD, engineering tools, environmental qualification, quality and the applied safety life cycle supporting these activities. Platform qualification also considers interaction of platform assemblies. This document applies to I&C platforms under development, as well as to pre-existing I&C platforms.
This document provides guidance on what is relevant to I&C platform qualification and what is relevant to the implementation of an I&C system design based on a qualified I&C platform.
The objective of this document is to identify those requirements that relate closely to an I&C platform qualification and aims to support a two-step approach for the licensing of I&C systems based on this I&C platform. If the complete qualification of an I&C system is performed in the framework of a plant-specific application, this document does not apply.

IEC 60862-1:2015 specifies the methods of test and general requirements for SAW filters of assessed quality using either capability approval or qualification approval procedures. This edition includes the following significant technical changes with respect to the previous edition:
- the terms and definitions from IEC 60862-2:2002 are included;
- the measurement method for the balanced type filter is described;
- the electrostatic discharge (ESD) sensitivity test procedure is considered.

IEC 60245-1:2026 applies to rigid and flexible cables with insulation, and sheath if any, based on vulcanized rubber of rated voltages Uo/U up to and including 450/750 V used in power installations of nominal voltage not exceeding 450/750 V AC. Particular types of cables are specified in IEC 60245-3, IEC 60245-4, IEC 60245-6, IEC 60245-7, IEC 60245-8. The code designations of these types of cables are provided in Annex A of this document. The test methods specified in Part 1 to Part 8 of the IEC 60245 series are given in IEC 63294 and in the relevant parts of IEC 60811.
IEC 60245-1:2026 includes the following significant technical changes with respect to the previous edition:
a) reference to IEC 60245-2 for the tests has been deleted and replaced by IEC 63294;
b) reference to lift cable according to IEC 60245-5 has been deleted;
c) normative references have been updated.

IEC TS 60904-1-2:2024 describes procedures for the measurement of the current-voltage (I-V) characteristics of single junction bifacial photovoltaic devices in natural or simulated sunlight. It is applicable to encapsulated solar cells, sub-assemblies of such cells or entire PV modules. For measurements of I-V characteristics of non-encapsulated solar cells, IEC TS 63202-3 applies.
The requirements for measurement of I-V characteristics of standard (monofacial) PV devices are covered by IEC 60904-1, whereas this document describes the additional requirements for the measurement of I-V characteristics of bifacial PV devices.
This second edition cancels and replaces the first edition published in 2019. This edition includes the following significant technical changes with respect to the previous edition:
a) The scope has been updated and refers to IEC TS 63202-3 for the measurement of non‑encapsulated solar cells.
b) The requirements for the non-uniformity of irradiance have been updated and now refer to classifications introduced in IEC 60904-9.
c) The requirement for non-irradiated background has been revised.
d) Spectral mismatch corrections are no longer mandatory, unless required by another standard. Spectral mismatch would have to be considered in the measurement uncertainty.
e) The requirement regarding the calculation of bifaciality has been modified: Equivalent irradiance shall not be calculated based on the minimum bifaciality value between ISC and Pmax, but on the bifaciality of ISC.

IEC 63497:2026, which is a product standard, is intended to specify the EMC, performance and safety requirements of shunt-connected active correction devices (ACD) with rated system voltages not exceeding 1 000 V AC or 1 500 V DC.
These devices can be either cord or permanently connected. They can be movable, stationary, or fixed devices.
An ACD includes both a static VAR generator (SVG) and an active harmonic filter (AHF).
The primary function of a shunt connected ACD is to do one or more of the following:
- active harmonic filtering;
- reactive power compensation;
- unbalanced load compensation.
Additional functions of a shunt-connected ACD, not addressed by this document, can be the following:
- flicker compensation;
- interharmonic component filtering.
In case of hybrid devices, combining a passive harmonic filter and an ACD, this document covers only the active part.
This document does not cover
- active mitigation functions part of another device (variable speed drive, uninterruptible power supply, dynamic voltage restorer, etc.),
- switched power capacitors,
- switched inductors,
- passive harmonic filters,
- energy storage converters, and
- series-connected active correction devices.

IEC 60245-7:2026 defines the particular requirements for heat resistant ethylene-vinyl acetate rubber insulated cables of rated voltages up to and including 450/750 V, which apply in addition to the general requirements specified in IEC 60245-1, which apply to all cables.
The tests for cables specified in the IEC 60245 series are described in IEC 63294.
IEC 60245-7:2026 includes the following significant technical changes with respect to the previous edition:
a) reference to IEC 60245-2 for the tests has been deleted and replaced by IEC 63294;
b) reference to lift cable according to IEC 60245-5 has been deleted;
c) normative references have been updated.
This document is to be used in conjunction with IEC 60245-1.

IEC 60034-1:2026 is available as IEC 60034-1:2026 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60034-1:2026 is applicable to all rotating electric machines, except rotating electric machines for rail and road vehicles, which are covered by the IEC 60349 series of standards. Machines with integrated EMC-active components such as a variable frequency converter are considered being a power drive system (see the IEC 61800 series of standards). In such cases, this document applies to the motor component of the power drive system only. Machines within the scope of this document can also be subject to superseding, modifying or additional requirements in other standards, for example, IEC 60079 and IEC 60092.
NOTE If particular clauses of this document are modified to meet special applications, for example machines subject to radioactivity or machines for aerospace, all other clauses apply insofar as they are compatible. This fifteenth edition cancels and replaces the fourteenth edition published in 2022. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
Clause 1: Clarification with respect to machines with integrated EMC-active components added
Clause 2: Normative references updated
Clause 3: Note on meaning of “agreement” deleted; list of abbreviations added
Clause 4.2.9, 4.2.10: References to IEC TS 60034-25 deleted, as converter duty is now defined in 3.36
Clause 5.1: Reference to IEC TS 60034-25 converted into note
Clause 6.6 Clarification of requirements
Clause 7.2.1: Reference to IEC TS 60034-25 converted into note
Clause 7.5: Clarification of requirements
Clause 7.6: Reference to IEC TS 60034-25 converted into note
Clause 8.1: Clarification of references
Clause 8.6.1: Clarification on choice of method for large machines
Table 11: Updated values for thermal class 200 (N)
Clause 8.10.3: Clarification of requirements
Clause 9.2: Clarification on test voltage for old machines after rewinding
Table 17: Items 9 and 10 merged and clarified
Clause 9.7: Clarification on overspeed test for machines held at stock added
Table 20: Clarification on test speed for converter duty machines
Clause 10.2: Clarification of term ‘digital form’
Clause :10.3 Note on QR code deleted
Clause 11.1: Reference to protective earth test added
Clause 13.1: Clarifying flowchart added
Clause 13.2.2: Clarification on motors with integrated VSD added
Clause 13.3: Clarification of requirements after consultation with ACEC
Clause 13.5: Clarification of requirements after consultation with ACEC
Clause 14: Note on safety converted to normal text

IEC 61439-8:2026 specifies requirements for the design and verification of low voltage switchgear and controlgear assemblies for use in photovoltaic installations.
PVAs have the following characteristics:
- assemblies used for the combination of electrical energy in DC systems for which the input and output voltage does not exceed 1 500 V DC;
- assemblies supplied from an AC network where the voltage does not exceed 1 000 V AC for auxiliary and control purposes;
- stationary assemblies with an enclosure;
- assemblies intended for operation by authorised persons (see IEC 61439 1:2020, 3.7.17), but can be located in an area accessible to ordinary persons (see IEC 61439 1:2020, 3.7.16);
- suitable for indoor or outdoor installation.
This document identifies definitions, specifies the service conditions, details the construction requirements, defines the technical characteristics, and provides verifications for PVAs. PVAs can also include control or signalling devices, or both, associated with the distribution of electrical energy. This document applies to all PVAs whether they are designed and manufactured on a one-off basis or fully standardized and manufactured in quantity. Either the manufacture or assembly, or both, can be carried out by an entity other than the original manufacturer (see IEC 61439 1:2020, 3.10.1).
This document does not apply to:
- individual devices, for example, circuit-breakers, fuse switches and self-contained components such as, motor starters, switch mode power supplies (SMPS), uninterruptable power supplies (UPS), basic drive modules (BDM), complete drive modules (CDM), adjustable speed power drives systems (PDS), stand-alone energy storage systems (battery and capacitor systems), other electronic equipment which comply with their relevant product standards, such as junction boxes of photovoltaic modules. This document describes their integration into a PVA or an empty enclosure used as a part of a PVA;
- photovoltaic power conversion equipment (PCE) incorporating DC combination sub-systems, covered by the IEC 62109 series.
Some applications, such as either explosive atmospheres or functional safety, or both, can be subject to the requirements of other standards or local installation rules in addition to those specified in the IEC 61439 series. This document does not apply to the specific types of assemblies covered by other parts of the IEC 61439 series.

IEC 62899-403-2:2026 specifies commonly utilized basic design patterns to evaluate the reproducibility of printed pattern from the viewpoint of the quality of printing plate for the printed electronics. Printing plates in this document include not only gravure, relief (flexo), and offset plates, but also a cylinder for rotary printing and mesh masks for screen printing. Inkjet printing is out of the scope of this document.

IEC 60245-3:2026 defines the particular requirements for rubber heat resistant silicone insulated cables of rated voltage of 300/500 V which apply in addition to the general requirements specified in IEC 60245-1, which apply to all cables.
The tests for cables specified in the IEC 60245 series are described in IEC 63294.
IEC 60245-3:2026 includes the following significant technical changes with respect to the previous edition:
a) reference to IEC 60245-2 for the tests has been deleted and replaced by IEC 63294;
b) normative references have been updated.
This document is to be used in conjunction with IEC 60245-1.

IEC 60413:2026 concerns graphite-based grades that are used for sliding electrical contacts, such as carbon brushes or pantograph strips. By extension, it is possible to apply the test procedures of this document to all electrical sliding contacts for electrical transmission appliances and to other appliances of graphite-based materials (heat exchangers, bearings, etc.). This document specifies uniformized procedures for determining their following properties:
- density and porosity;
- resistivity;
- flexural strength;
- hardness;
- ash content.
In addition, it provides recommendations on test procedures for other properties:
- Mechanical properties: Charpy impact test, compressive strength, tensile strength (Annex B).
- Thermal properties: coefficient of thermal expansion, specific heat capacity, thermal conductivity (Annex C).
The properties determined by these tests are inherent to the graphite-based materials and it is therefore important to distinguish them from performance characteristics in operation on electrical equipment (carbon brush in an electrical rotating machine, contact strips on a pantograph, etc.). Since these materials are generally brittle, porous materials, it is reasonable that their properties vary much more than the same properties in metals. Some test methods are suitable for use in production quality control (routine tests), others only for more thorough investigations, using precise laboratory techniques (see Annex A).
WARNING — The use of this document can involve hazardous substances, operations and equipment. It does not purport to address all of the safety or environmental problems associated with its use. It is the responsibility of the user of this document to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
This second edition cancels and replaces the first edition published in 1972. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) Title modified.
b) Addition of definitions in Clause 3.
c) Clause 5 on test specimen: Nomenclature and addition of the different types of test specimen, specification on their dimensions, tolerances and preparation.
d) Improvement of test procedures of the properties already disclosed in the previous edition (Clause 6 to Clause 11).
e) Separation of apparent density and apparent porosity (respectively Clause 6 and Clause 10).
f) Resistivity (Clause 7): Addition of the eddy current method.
g) Rebound hardness (Clause 9): Addition of a new model of scleroscope and addition of Leeb method, as a possible alternative to the traditional scleroscope method.
h) Common elements of the test report in a dedicated Clause 12.
i) Addition of Annex A (normative): introduction of tests categories (serial/type tests), list of properties to be tested for each test category of test according to their purpose.
j) Addition of Annex B: test procedures for other mechanical properties than flexural strength and hardness: tensile, compressive and impact strength.
k) Addition of Annex C: test procedures for thermal properties (coefficient of linear expansion, specific heat capacity and thermal conductivity).
l) Addition of Annex D: supplement to density and porosity.
m) Addition of Annex E: recommendations on methods for elements analysis.
n) Addition of Annex F: supplement of information concerning scleroscope hardness.

IEC TS 63487:2026 serves as a specification for the joint commissioning of grid-connection of offshore wind farms (GCOWF) using the voltage source converter based high voltage direct current (VSC HVDC) transmission system.
This document provides the technical specification on the commissioning precondition, objectives, procedures, items, methods and requirements of grid-connection of offshore wind farms using the VSC HVDC power transmission, particularly focusing on the special test items of offshore wind farms.
This document covers the commissioning of offshore wind farms, testing of onshore DC energy dissipation device, special test items for transmission test, coordination function testing among VSC HVDC, DC energy dissipation device, offshore wind farm and automatic generation control (AGC). However, the conventional commissioning test items of the onshore VSC HVDC system are out of scope.

IEC 61577-6:2026 describes the specific requirements for instruments measuring the exposure to airborne radon (222Rn) outdoors and indoors. The exposure is the time-integrated radon activity concentration in air accumulated over the exposure period.
This document applies to radon integration measurement systems equipped with solid-state nuclear track detectors (SSNTD) installed in an enclosed volume. The air containing 222Rn enters the volume by diffusionIEC 61577 describes the specific requirements for instruments measuring the exposure to airborne radon (222Rn) outdoors and indoors. The exposure is the time-integrated radon activity concentration in air accumulated over the exposure period.
This document applies to radon integration measurement systems equipped with solid-state nuclear track detectors (SSNTD) installed in an enclosed volume. The air containing 222Rn enters the volume by diffusion

IEC TS 61000-1-6:2026, which is a Technical Specification provides methods and background information for the evaluation of measurement uncertainty in electromagnetic compatibility (EMC) tests and calibrations. It gives guidance to cover general measurement uncertainty considerations within the IEC 61000 series. The objective of this document is to give advice to EMC technical committees dealing with EMC tests, testing laboratories and calibration laboratories on the development of measurement uncertainty budgets; to allow uniform development and comparability of these budgets between laboratories; and to align the treatment of measurement uncertainty across the technical committees of the IEC dealing with EMC tests.
Any contributing factor to measurement uncertainty that is mentioned within this document will be treated as an example: the EMC committee responsible for the preparation of a basic immunity or emission standard is responsible for identifying the factors that contribute to the measurement uncertainty of the relevant test method. This document provides:
• methods for the evaluation of measurement uncertainty (MU),
• mathematical formulae for probability density functions and their interpretation,
• examples of MU calculations,
• examples of MU applications,
• MU reporting information.
This document is not intended to summarize all measurement uncertainty influence quantities, nor is it intended to specify how measurement uncertainty will be taken into account in determining compliance with an EMC requirement. This first edition cancels and replaces the first edition of IEC TR 61000-1-6 published in 2012. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) purpose of and responsibilities in measurement uncertainty evaluation by testing and calibration laboratories, technical committees dealing with EMC requirements have been introduced;
b) classification of measurement uncertainty contributions (measurement uncertainty, measurement instrumentation uncertainty, intrinsic uncertainty of the measurand) has been revised;
c) new clauses devoted to measurement uncertainty in emission test methods and measurement uncertainty in immunity test methods and in calibration have been added;
d) methods of measurement uncertainty calculation have been enriched by introducing the GUM Supplement 1 (GUMS1) numerical approach based on Monte Carlo method;
e) measurement uncertainty budget development has been revised to include the basic steps to follow in case of application of the GUM method or of the GUMS1 method;
f) a clause specifically devoted to the measurement model function has been added to emphasize the importance of the measurement model and to provide guidance when the measurement model is unknown;
g) the clause on probability density functions has been revised to include the Student-t probability density function;
h) the clause on Type A and Type B evaluations of uncertainty has been revised to improve readability;
i) the clause on the conversion from linear quantities to decibel and vice versa has been revised to improve readability and make some corrections;
j) the clause on the applicability of measurement uncertainty has been modified to improve readability and to remove statements conflicting with conformity assessments standards;
k) Annex A and Annex B have been revised by including results of GUMS1 application;
l) new annexes have been introduced, namely Annex C (on metrological confirmation of measurement equipment), Annex D (on sampling statistics, moved from the main text to this annex to improve readability of the whole document), Annex E (on robust statistics for processing interlaboratory comparison data, with example), Annex F (including an example of application of MU for the assessment of the risk of an out of tolerance of measurement equipment) and Annex G (including an example of appli

IEC 61935-2:2021 specifies test methods for balanced and coaxial cords, which are used as equipment cords, patch cords, and CP cords, within cabling systems, in accordance with ISO/IEC 11801-1. The test methods and associated requirements are provided to demonstrate performance and reliability and to ensure compatibility of these balanced and coaxial cords during their operational lifetime. This document may also be used for providing test methodology for assessing the performance of other cords.
This fourth edition cancels and replaces the third edition published in 2010. This edition includes the following significant technical changes with respect to the previous edition:
- inclusion of cords up to category 8.1 and category 8.2, as defined in ISO/IEC 11801-1.

IEC TS 62257-200:2026 provides a method for describing the results to be achieved by the electrification system independently of the technical solutions that could be implemented.
The purpose of this part of IEC 62257 is to provide a method to assist designers of renewable energy systems, project contractors and project developers to design the electrification system for isolated sites while matching the identified needs. This part of IEC 62257 assesses the needs of the users and the different power system architectures which can be used for meeting these needs. In relation to the needs of the different participants to the project, functional requirements to be achieved by the production and distribution subsystems are listed.
This document provides technical standardization to different stakeholders (including but not limited to project developers, financing agencies, testing agencies, installers, etc.) involved in electrification projects for access to electricity for those not solely connected to the regional grid, through the setting up of off-grid renewable energy and hybrid systems (including micro-grids) with a voltage less than or equal to 1 000 V for AC (alternating current) or a voltage less than or equal to 1 500 V for DC (direct current). This document could be used for rural electrification, also for electrification of remote sites in developed countries, or any requirement for electricity access that cannot be met by attaching solely to the national utility grid. They promote the use of renewable energies, but at this time they do not deal with clean-energy mechanisms development (CO2 emissions, carbon credit, etc.).

IEC TR 63614-3:2026 describes the gap analysis for metaverse systems and equipment, including examination of existing standards and services/applications within the metaverse domain. The analysis includes a comprehensive review of developments in various Standards Development Organizations (SDOs) and the relevant industry.

IEC TS 62607-4-11:2026, which is a Technical Specification, specifies the dispersion stability by using the zeta potential (ζ) method for nano-carbon materials for lithium ion capacitors. This document describes not only the dispersion stability of nano-carbon materials but also the effect of different surfactants as well as the evaluation method for testing long-term dispersion stability using the zeta potential (ζ). This document describes:
• Dispersion stability of nano-carbon materials using zeta potential (ζ) for electrochemical capacitors using carbon nanomaterials as electrodes
• Effect of different surfactants
• Evaluation of long-term dispersion stability using the zeta potential (ζ) method

IEC TR 63645:2026 provides a comprehensive range of environment related information sources to assist with understanding, assessing, and advancing the environmental performance of lighting products.

IEC 62133-1:2026 specifies requirements and tests for the safe operation of portable sealed secondary nickel cells and batteries containing alkaline electrolyte, under intended use and reasonably foreseeable misuse. This second edition cancels and replaces the first edition of IEC 62133-1 published in 2017. It constitutes a technical revision.
This edition includes the following significant technical changes with respect to IEC 62133 1:2017:
a) removal of the definition "secondary battery";
b) removal of the definition "portable battery";
c) "removal of the definition "portable cell";
d) replacement of the single term "room temperature" with 20 °C ± 5 °C in 7.2.3;
e) modification of Figure 1.

IEC 62264-2:2026 specifies interface content exchanged between manufacturing control functions and other enterprise functions as interrelated information models. The information models are represented as an interrelated collection of conceptual object models which can be used for the implementation of applications with logical data and physical data models. The data exchanges in interfaces are scoped as between Level 3 manufacturing operations and Level 4 business systems in the hierarchical model defined in IEC 62264-1. The purpose of this document is to reduce the risk, cost, and errors associated with interface implementation.
Since this document covers many manufacturing operations and enterprise domains and there are many different standards for those domains, the semantics of this data exchange standard are described at a conceptual level intended to enable the other standards to be mapped to these semantics. To this end, this document defines a set of elements contained in the generic interface, together with a mechanism for extending the interface content for implementations.
The scope is limited to the definition of object models and attributes of the exchanged information defined in the IEC 62264-1.
This third edition cancels and replaces the second edition published in 2013. It is published as a double logo standard. This edition constitutes a technical revision. Due to the extent of the changes and updates, this document cannot ensure backward compatibility to implementations based on older editions. This edition includes the following significant technical changes with respect to the previous edition and ANSI/ISA 95.00.02-2018 (ED3):
a) object models are added for the use of interactive communications to notify subscribers about the occurrence of events and to provide context information about the event, making the information exchange more efficient and consistent. The added object models were the operations event model and operations record model.
b) operations location model and spatial definition attribute added to allow the description of operation locations.
c) operations test model added to define how test specifications and test results are related to testable objects, operations test requirements, actual resource, and work definitions.
d) definition of possible measurement uncertainty sub-attributes for all value, quantity and duration attributes defined in this document.
e) updated hierarchy scope model.
f) removed as separate models in this edition were the models for product definition, production schedule, production performance, and production capability. Their content is covered for all manufacturing operations management categories under operations models.
g) object model was added for the operations segment capability as a collection of resources related to other operations models.
h) updated relationship name and role name conventions established in 3.3.4 and implemented across all models and associated tables.
i) updated all objects’ relationship role table with explicit source and target names.
j) updated common header attributes for objects and property objects established in 4.5 and implemented across all models and associated tables.
k) updated explanation of the ‘relationships between resource reference objects in operations management information models and resource models. These additional resource relationships are added to all operations management models.
l) added an annex explanation for implementation options for specifying values in unit of measurement attribute.
m) added an annex explanation for implementation considerations for inheritance and persistence of data exchange object models.

IEC TR 63139:2026 provides explanations and background information on electrical safety requirements in TC 34 standards.

IEC TS 63371-1:2026 applies to crystalline silicon wafers for use as the substrates in making photovoltaic cells. It describes the methods for measuring the electrical characteristics of these silicon wafers. It does not provide mechanical information about these wafers. Annex A shows the widely accepted electrical characteristics values. The purpose of this document is to establish a standardized specification for crystalline silicon wafers, defining their electrical characteristics, the applicable test methods, and the acceptable value ranges for those characteristics.

IEC 61375-1:2026 applies to the architecture of data communication systems in open trains, i.e. it covers the architecture of a communication system for the data communication between vehicles of the said open trains, the data communication within the vehicles and the data communication from train to the ground. The applicability of IEC 61375-1 to the train network technologies allows for interoperability of individual vehicles within open trains in international traffic. The data communication systems inside vehicles are given as recommended solutions to cope with the said TCN. In any case, proof of compatibility between a proposed train backbone and a proposed consist network will have to be brought by the supplier. IEC 61375-1 might be additionally applicable to closed trains and multiple unit trains when so agreed between purchaser and supplier. This fourth edition cancels and replaces the third edition published in 2012. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) Extension of train backbone topologies: aggregated and segregated topology;
b) Added independent consist orientation check with segregated train backbone topology;
c) Introduction of wireless technologies: wireless train backbone and wireless consist network;
d) Possibility of virtual networks;
e) Definition of data classes and protocol requirements suitable for the OMTS domain;
f) New clause about cybersecurity in train communication networks.

ISO/IEC TR 30123:2026 provides guidance on applying IoT technologies to home healthcare systems, taking into account the specific characteristics.

IEC 63423:2026 applies to cable connector assemblies for harsh environment purposes that are important to safety. It covers the engineering safety aspects to be met in the design, qualification, fabrication, assembling, testing, and installation on site of cable connector assemblies to be operated under accident conditions.
This document can be additionally used for cable assemblies that are operated under normal conditions.
This document covers cable connector assemblies that are used for the following generic functions:
- signal transmission (AC or DC voltage/current; pulses, frequency), or
- supplying electrical energy to sensors, transducers, or other devices.

IEC 61757:2026 defines, classifies, and provides a framework of generic tests or measurement methods for characterizing and specifying fibre optic sensors, including their specific components and subassemblies. The requirements of this document apply to all related fibre optic sensor standards that are part of the IEC 61757 series. Other parts of the IEC 61757 series contain requirements that are specific to sensors that measure particular quantities, and to a particular style or variant of such a fibre optic sensor. This second edition cancels and replaces the first edition published in 2018. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) expansion of the list of metrological parameters;
b) updates of the terms and definitions;
c) updates of the normative references and bibliography;
d) updates of the technical descriptions in Annex A.

IEC 63522-3:2026 is used for testing along with the appropriate severities and conditions for measurements and tests designed to assess the ability of DUTs to perform under expected conditions of transportation, storage and all aspects of operational use.

IEC 62047-52:2026 specifies a testing method for measuring device performance and failure strain under biaxial tensile deformation in stretchable MEMS materials. The typical examples of the stretchable MEMS materials are flexible single crystalline silicon structures, MEMS circuit boards, interconnected MEMS on a stretchable substrate. The test piece has a cruciform geometry and the test piece thickness ranges from 1 μm to 100 μm with the same thickness as the actual devices. Since the failure strain can vary depending on loading conditions like uniaxial tension and equi-biaxial tension, a biaxial load is applied to a cruciform test piece with varying strain ratio between two perpendicular loading directions.

IEC 63522-52:2026 is used for testing all kind of electrical relays and for evaluating their ability to perform under expected conditions of transportation, storage and all aspects of operational use.
This document defines a standard test method for coil overvoltage in device under test (DUT) equipped with a coil. is used for testing all kind of electrical relays and for evaluating their ability to perform under expected conditions of transportation, storage and all aspects of operational use.

IEC TR 61400-4-2:2026 provides non-binding information regarding the lubricant, lubrication system layout, and performance for wind turbine gearboxes. This document covers oil lubricated gearboxes. Additionally, guidance for selected lubricant parameters as well as for monitoring and maintaining lubricant characteristics is offered. This document provides a common reference for lubrication related matters for wind turbine drive trains. ISO/TR 18792 provides information for lubrication of industrial gearboxes. Some information is similar or identical to this document.
This document is useful to wind turbine system and component designers, wind turbine manufacturers, and owners/operators to ensure that lubricant related matters are addressed in the gearbox design and operation phases.
This current document covers oil lubricated gearboxes and is developed based on experience with predominantly gearboxes with rolling bearings. It can be applied to gearboxes with plain bearings but possibly does not yet address all aspects of this technology. The document structure is prepared to receive further content related to other components in the wind turbine drivetrain and include additional types of lubricants.

CORRECTED VERSION 2026-02
IEC TR 61850-1-1:2026 which is a technical report, is applicable to power utility automation systems (PUAS). It defines the communication between intelligent electronic devices (IEDs) in such a system, and the related system requirements. This part gives an introduction and overview of the standard series. It refers to and might include text and figures coming from other parts of the standard series.
This document replaces the second edition of IEC TR 61850-1 published in 2013. The number has been changed from IEC TR 61850-1 to IEC TR 61850-1-1, as in the meantime there is also a document with the number IEC 61850-1-2. This edition constitutes a technical revision.
This edition includes the following significant changes with respect to the previous edition:
Updates to the TISSUE process.
Descriptions of the namespace concepts.
Renumbering the document from IEC 61850-1 to 61850-1-1.
This corrected version of IEC TR 61850-1-1:2026 incorporates the following correction:
– Addition of bibliographic reference numbers in the content

IEC 63041-3:2026 is available as IEC 63041-3:2026 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 63041-3:2026 is applicable to piezoelectric physical sensors mainly used in the field of process control, wireless monitoring, dynamics, thermodynamics, vacuum engineering, and environmental sciences. This document provides users with technical guidelines as well as basic knowledge of common physical sensors. Piezoelectric sensors covered herein are those applied to the detection and measurement of physical quantities such as force, pressure, torque, viscosity, temperature, film thickness, acceleration, vibration, and tilt angle.
This edition includes the following significant technical changes with respect to the previous edition:
a) Some terms in Clause 3 have been updated to be consistent with IEC TS 61994-5:2023.

IEC 61400-40:2026 provides the EMC requirements and test methods that apply to the individual wind turbine and all the sub systems which are part of the wind turbine.
The current document applies to measurements on individual wind turbines and not multiple wind turbines.
This document defines the requirements and test methods for the verification of the wind turbine performance against radiated emissions and the immunity of their components against conducted and radiated phenomena. This document is applicable to onshore and offshore wind turbines.