17.220 - Electricity. Magnetism. Electrical and magnetic measurements
ICS 17.220 Details
Electricity. Magnetism. Electrical and magnetic measurements
Elektrizitat. Magnetismus. Elektrische und magnetische Messungen
Electricite. Magnetisme. Mesurage electrique et magnetique
Elektrika. Magnetizem. Električne in magnetne meritve
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IEC/IEEE 61869-21:2025 provides the requirements, the methods and the guidelines to be applied on the evaluation of uncertainty in testing the accuracy of instrument transformers (IT) with an analogue or a digital secondary signal for measuring, protection and control purposes, with rated frequencies from 15 Hz to 400 Hz.
This document covers the uncertainty evaluation in testing the accuracy of IT (including on-site testing of accuracy) independently of the technology used (either inductive or non-inductive).
This document reports on how to take into account the sources of uncertainty in the setups for accuracy and how to combine their effects in order to evaluate the uncertainty in the test results.
- Standard40 pagesEnglish languagesale 15% off
IEC 60216-1:2025 specifies the general ageing conditions and procedures to be used for deriving thermal endurance characteristics and gives guidance in using the detailed instructions and guidelines in the other parts of IEC 60216. Although originally developed for use with electrical insulating materials and simple combinations of such materials, the procedures are considered to be of more general applicability and are widely used in the assessment of materials not intended for use as electrical insulation. In the application of this document, it is assumed that a practically linear relationship exists between the logarithm of the time required to cause the predetermined property change and the reciprocal of the corresponding absolute temperature (Arrhenius relationship). For the valid application of this document, no transition, in particular no first-order transition, is expected to occur in the temperature range under study.
This edition includes the following significant technical changes with respect to the previous edition:
a) the definition for temperature index (TI) has been updated;
b) requirements for selection of related materials used, e.g. in different colours (5.1.2), have been added;
c) test procedure for thickness sensitivity (5.5 et 6.6) has been added;
d) Annex C "Concepts in earlier editions" has been deleted.
- Standard30 pagesEnglish languagesale 15% off
- Standard31 pagesFrench languagesale 15% off
- Standard61 pagesEnglish and French languagesale 15% off
IEC/IEEE 80005-3:2025 specifies provisions for the design, installation and testing of low-voltage shore connection (LVSC) systems, onboard ships and on shore, to supply the ship with electrical power from shore.
This document is applicable to:
- ships requiring up to 1 MVA while at berth;
- three-phase shore connection systems rated 250 A and above, and with a nominal voltage rating of 400 V AC to 1 000 V AC;
- shore-side connection systems;
- shore-to-ship connection and interface equipment;
- transformers and reactors;
- semiconductor and rotating frequency convertors;
- ship-side connection systems;
- protection, control, monitoring, interlocking and power management systems.
This document does not apply to:
- inland navigation vessels;
- high-voltage shore connection systems, including ships built in accordance with the annexes of IEC/IEEE 80005-1;
- the electrical power supply during docking periods, for example dry docking and other out-of-service maintenance and repair;
- systems to be operated by ordinary persons as defined in 3.19.
- Standard47 pagesEnglish languagesale 15% off
IEC 61326-2-7:2025 specifies the EMC test requirements for process automation equipment using at least one Ethernet APL (Ethernet ADVANCED PHYSICAL LAYER) compliant port according IEC TS 63444. The type of equipment covered by this document includes INFRASTRUCTURE DEVICES such as switches as well as measurement and control devices. This document provides requirements for the EMC test setups of the APL interface for devices intended for use in process control and process measurement.
The other functions of the equipment remain covered by other parts of the IEC 61326 series.
NOTE Ethernet-APL uses IEEE Std. 802.3 2022 Ethernet Physical Layer 10BASE-T1L, suitable to be used for full-duplex communication over a single balanced pair of conductors.
The test levels are based on the intended environment as stated in the product’s specification or user documentation and selected appropriately from IEC 61326-1.
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IEC 63616:2025 relates to a conductivity measurement method of thin metal films at microwave and millimeter-wave frequencies. This method has been developed to evaluate the conductivity of a metal foil used for adhering to a substrate or the interfacial conductivity of a metal layer formed on a dielectric substrate. It uses higher-order modes of a balanced-type circular disk resonator and provides broadband conductivity measurements by using a single resonator.
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IEC 63297:2025 provides a classification of NILM sensing devices for use in NILM systems, according to the state of the art of NILM technologies.
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IEC 63522-31:2025 This part of IEC 63522 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 to investigate the effect of remanence in the magnetic circuit of relays with DC coil.
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This part of IEC 61340 provides test methods and procedures for evaluating and selecting air ionization equipment and systems (ionizers).
This document establishes measurement techniques, under specified conditions, to determine offset voltage (ion balance) and decay (charge neutralization) time for ionizers.
This document does not include measurements of electromagnetic interference (EMI), or the use of ionizers in connection with ordnance, flammables, explosive items or electrically initiated explosive devices.
As contained in this document, the test methods and test conditions can be used by manufacturers of ionizers to provide performance data describing their products. Users of ionizers are urged to modify the test methods and test conditions for their specific application in order to qualify ionizers for use, or to make periodic verifications of ionizer performance. The user will decide the extent of the data required for each application.
See Annex A for information regarding theoretical background and additional information on the standard test method for the performance of ionizers.
CAUTION: Procedures and equipment described in this document can expose personnel to hazardous electrical and non-electrical conditions. Users of this document are responsible for selecting equipment that complies with applicable laws, regulatory codes and both external and internal policy. Users are cautioned that this document cannot replace or supersede any requirements for personnel safety. See Annex C for safety considerations.
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IEC/IEEE 62704-2:2017 establishes the concepts, techniques, validation procedures, uncertainties and limitations of the finite difference time domain technique (FDTD) when used for determining the peak spatial-average and whole-body average specific absorption rate (SAR) in a standardized human anatomical model exposed to the electromagnetic field emitted by vehicle mounted antennas in the frequency range from 30 MHz to 1 GHz, which covers typical high power mobile radio products and applications. This document specifies and provides the test vehicle, human body models and the general benchmark data for those models. It defines antenna locations, operating configurations, exposure conditions, and positions that are typical of persons exposed to the fields generated by vehicle mounted antennas. The extended frequency range up to 6 GHz will be considered in future revisions of this document. This document does not recommend specific peak spatial-average and whole-body average SAR limits since these are found in other documents, e.g. IEEE C95.1-2005, ICNIRP (1998).
Key words: Electromagnetic Field, Finite-Difference Time Domain (FDTD), Spatial-Average Specific Absorption Rate (SAR), vehicle mounted antennas
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IEC/IEEE 62704-2: 2025 Amendment 1
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IEC 61554:2025 defines a system of dimensions for panel mounting of equipment. It is applicable to electrical and electrically operated indicating, recording and control instruments. The purpose of this document is to establish dimensional interchangeability between instruments made by different manufacturers.
- Standard18 pagesEnglish languagesale 10% offe-Library read for1 day
IEC 61326-2-6:2025 applies to the BASIC SAFETY and ESSENTIAL PERFORMANCE of IN VITRO DIAGNOSTIC MEDICAL ELECTRICAL EQUIPMENT (IVD MEE). This part of IEC 61326 applies to the BASIC SAFETY and ESSENTIAL PERFORMANCE of IVD MEE in the presence of electromagnetic disturbances and to electromagnetic disturbances emitted by IVD MEE.
BASIC SAFETY with regard to electromagnetic disturbances is applicable to all IVD MEE.
NOTE 1 Performance with respect to electromagnetic disturbances other than ESSENTIAL PERFORMANCE is the subject of IEC 61326-1:2020
NOTE 2 IT equipment can be a part of an IVD MEE, if it is required to maintain BASIC SAFETY or ESSENTIAL PERFORMANCE.
This edition includes the following significant technical changes with respect to the previous edition:
- Update of the document with respect to test levels and documentation.
- Standard36 pagesEnglish languagesale 10% offe-Library read for1 day
IEC 63297:2025 provides a classification of NILM sensing devices for use in NILM systems, according to the state of the art of NILM technologies.
- Standard24 pagesEnglish languagesale 10% offe-Library read for1 day
This part of IEC 61340 provides electrical and mechanical test methods and performance limits for evaluation, acceptance and periodic verification testing of wrist straps.
NOTE All dimensions are nominal except where indicated.
This standard is intended for testing wrist straps and wrist strap systems used for the grounding of personnel engaged in working with ESD sensitive assemblies and devices.
It does not address constant monitoring systems.
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IEC 60270:2025 is applicable to the charge-based measurement of partial discharges which occur in electrical apparatus, components or systems when tested with alternating voltages (AC) up to 500 Hz or with direct voltage (DC).
This document:
– defines the terms used;
– defines the quantities to be measured;
– describes the measurement frequencies as well as the test and measuring circuits which may be used;
– defines analogue and digital measuring methods required for common applications;
– specifies methods for calibration and requirements of instruments used for calibration;
– gives guidance on test procedures;
– gives some assistance concerning the discrimination of partial discharges from external interference.
The provisions of this document are used in the drafting of specifications relating to partial discharge measurements for specific power apparatus. It deals with electrical measurements of impulsive (short-duration) partial discharges, but reference is also made to non-electrical methods primarily used for partial discharge location (see Annex F). Diagnosis of the behaviour of specific power apparatus can be aided by digital processing of partial discharge data (see Annex E) and also by non-electrical methods that are primarily used for partial discharge location (see Annex F).
This document is primarily concerned with electrical measurement of partial discharge in terms of apparent charge for specific power apparatus made during tests with alternating voltage, but specific problems which arise when tests are made with direct voltage are considered in Clause 11.
The terminology, definitions, basic test circuits and procedures often also apply to tests at other frequencies, but special test procedures and measuring system characteristics which are not considered in this document may be required. For measurements at higher frequency ranges, see IEC TS 62478.
Annex A provides normative requirements for performance tests on calibrators.
This fourth edition cancels and replaces the third edition published in 2000, and Amendment 1:2015. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) Title modified.
b) Use with alternating voltages up to 500 Hz or with direct voltage.
c) Clear focus on charge-based partial discharge measurements.
d) Streamlined performance checks for partial discharge measurement system components.
e) Improved normative Annex A for performance tests on calibrators.
f) Revised and new informative Annexes.
In a future revision, this document will seek horizontal publication status in accordance with IEC Guide 108.
- Standard74 pagesEnglish languagesale 10% offe-Library read for1 day
IEC 61326-2-6:2025 applies to the BASIC SAFETY and ESSENTIAL PERFORMANCE of IN VITRO DIAGNOSTIC MEDICAL ELECTRICAL EQUIPMENT (IVD MEE). This part of IEC 61326 applies to the BASIC SAFETY and ESSENTIAL PERFORMANCE of IVD MEE in the presence of electromagnetic disturbances and to electromagnetic disturbances emitted by IVD MEE. BASIC SAFETY with regard to electromagnetic disturbances is applicable to all IVD MEE. NOTE 1 Performance with respect to electromagnetic disturbances other than ESSENTIAL PERFORMANCE is the subject of IEC 61326-1:2020 NOTE 2 IT equipment can be a part of an IVD MEE, if it is required to maintain BASIC SAFETY or ESSENTIAL PERFORMANCE. This edition includes the following significant technical changes with respect to the previous edition: - Update of the document with respect to test levels and documentation.
- Standard36 pagesEnglish languagesale 10% offe-Library read for1 day
This part of IEC 61340 provides electrical and mechanical test methods and performance limits for evaluation, acceptance and periodic verification testing of wrist straps. NOTE All dimensions are nominal except where indicated. This standard is intended for testing wrist straps and wrist strap systems used for the grounding of personnel engaged in working with ESD sensitive assemblies and devices. It does not address constant monitoring systems.
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IEC TS 62586-3:2025 Describes a procedure used for maintenance tests of individual power quality instruments. Users of these instruments need to ensure the conformity of the individual power quality instrument for stationary use with the requirements of IEC 62586‑1. This is achieved by periodic maintenance tests as defined in this document.
- Technical specification26 pagesEnglish languagesale 15% off
IEC 60270:2025 is applicable to the charge-based measurement of partial discharges which occur in electrical apparatus, components or systems when tested with alternating voltages (AC) up to 500 Hz or with direct voltage (DC). This document: – defines the terms used; – defines the quantities to be measured; – describes the measurement frequencies as well as the test and measuring circuits which may be used; – defines analogue and digital measuring methods required for common applications; – specifies methods for calibration and requirements of instruments used for calibration; – gives guidance on test procedures; – gives some assistance concerning the discrimination of partial discharges from external interference. The provisions of this document are used in the drafting of specifications relating to partial discharge measurements for specific power apparatus. It deals with electrical measurements of impulsive (short-duration) partial discharges, but reference is also made to non-electrical methods primarily used for partial discharge location (see Annex F). Diagnosis of the behaviour of specific power apparatus can be aided by digital processing of partial discharge data (see Annex E) and also by non-electrical methods that are primarily used for partial discharge location (see Annex F). This document is primarily concerned with electrical measurement of partial discharge in terms of apparent charge for specific power apparatus made during tests with alternating voltage, but specific problems which arise when tests are made with direct voltage are considered in Clause 11. The terminology, definitions, basic test circuits and procedures often also apply to tests at other frequencies, but special test procedures and measuring system characteristics which are not considered in this document may be required. For measurements at higher frequency ranges, see IEC TS 62478. Annex A provides normative requirements for performance tests on calibrators. This fourth edition cancels and replaces the third edition published in 2000, and Amendment 1:2015. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) Title modified. b) Use with alternating voltages up to 500 Hz or with direct voltage. c) Clear focus on charge-based partial discharge measurements. d) Streamlined performance checks for partial discharge measurement system components. e) Improved normative Annex A for performance tests on calibrators. f) Revised and new informative Annexes. In a future revision, this document will seek horizontal publication status in accordance with IEC Guide 108.
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IEC TR 63222-101:2025 aims to provide guidelines for power quality data applications on different aspects in public power supply systems at voltage ranges from LV, MV and HV with 50 Hz or 60 Hz rated frequency. It intends to provide a methodology for mining hidden knowledge and support power quality management based on PQ data analytics. Its primary goal is to serve different aspects of power system to promote the system maintaining its normal state and improve efficiency. It can also help avoid unexpected system events, equipment malfunction/maloperation, and production process interruption. The various methodologies and methods mentioned in this document are optional.
- Technical report62 pagesEnglish languagesale 15% off
IEC 61554:2025 defines a system of dimensions for panel mounting of equipment. It is applicable to electrical and electrically operated indicating, recording and control instruments. The purpose of this document is to establish dimensional interchangeability between instruments made by different manufacturers.
- Standard18 pagesEnglish languagesale 10% offe-Library read for1 day
IEC TS 61340-5-6:2025 establishes a set of methodologies, techniques, and instruments to characterize a process where electrostatic discharge (ESD) sensitive items (ESDS) are handled. ESD risk assessment covers risks by charged personnel, ungrounded conductors, charged ESDS, charged insulators, and ESDS in an electrostatic field. This document applies to activities that manufacture, process, assemble, install, package, label, service, test, inspect, transport, or otherwise handle electrical or electronic parts, assemblies, and equipment susceptible to damage by electrostatic discharges. This document does not apply to electrically initiated explosive items, flammable gases and liquids or powders. The document does not address program management, compliance verification or program manager/coordinator certification. Risks due to electromagnetic sources that produce AC fields are not considered. This document cancels and replaces IEC PAS 61340-5-6 published in 2022. This first edition constitutes a technical revision.
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IEC 60684-2:2025 gives methods of test for flexible insulating sleeving, including heat-shrinkable sleeving, intended primarily for insulating electrical conductors and connections of electrical apparatus, although they can be used for other purposes. The tests specified are designed to control the quality of the sleeving but it is recognized that they do not completely establish the suitability of sleeving for impregnation or encapsulation processes or for other specialized applications. Where necessary, the test methods in this document will be supplemented by appropriate impregnation or compatibility tests to suit the individual circumstances. This fourth edition cancels and replaces the third edition published in 2011.This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) major update of normative references;
b) revision of Clause 5, with amendment of methods for measurements of bore and wall thickness;
c) revision of Clause 11, to clarify that the longitudinal change test is done on expanded sleeving;
d) revision of Clause 28, additional method D for flame propagation testing;
e) revision of Clause 56, additional method for preparation of samples for adhesive peel test;
f) addition of Clause 63, abrasion test method;
g) addition of Clause 64, volume resistivity for semi-conducting materials;
h) addition of Clause 65, outgassing;
i) addition of Clause 66, resistance to weathering.
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IEC 60060-2:2025 is applicable to complete measuring systems and to their components, used for the measurement of high voltages during laboratory and factory tests with direct voltage, alternating voltage and lightning and switching impulse voltages and combined and composite voltages as specified in IEC 60060-1. For measurements during on-site tests, see IEC 60060-3. The limits on uncertainties of measurements stated in this document apply to test levels stated in IEC 60071-1. The principles of this document apply also to higher levels but the uncertainty can be greater.
This document:
• defines the terms used;
• describes methods to estimate the uncertainties of high-voltage measurements;
• states the requirements that apply to measuring systems;
• describes the methods for approving a measuring system and checking its components;
• describes the procedures by which the user demonstrates that a measuring system meets the requirements of this document, including the limits set for the uncertainty of measurement.
This fourth edition cancels and replaces the third edition published in 2010. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) The general layout and text has been updated and improved to make the standard easier to use.
b) This document has been revised to align it with the fourth edition of IEC 60060-1.
c) The treatment of measurement uncertainty estimation has been expanded.
d) This document is now applicable to measuring systems used in testing at all standard insulation levels specified in IEC 60071-1.
e) The measurement uncertainty requirement for the front time of the standard lighting impulse voltage has been changed from 10 % to 15 %, for testing at all standard insulation levels specified in IEC 60071-1.
f) The parameter "time-to-peak" of the switching impulse defined in the third edition of IEC 60060-1:2010 has been replaced by "front time" in the fourth edition of IEC 60060-1. Necessary changes have been made in this document to accommodate this change in IEC 60060-1.
g) Clause 10, Measurement of combined voltages and Clause 11, Measurement of composite voltages have been added.
h) Clause B.1 has been significantly revised to align more closely with the provisions of Clause 5, including using the same nomenclature.
- Standard91 pagesEnglish languagesale 10% offe-Library read for1 day
IEC 63297:2025 provides a classification of NILM sensing devices for use in NILM systems, according to the state of the art of NILM technologies.
- Standard40 pagesEnglish and French languagesale 15% off
IEC 60684-2:2025 gives methods of test for flexible insulating sleeving, including heat-shrinkable sleeving, intended primarily for insulating electrical conductors and connections of electrical apparatus, although they can be used for other purposes. The tests specified are designed to control the quality of the sleeving but it is recognized that they do not completely establish the suitability of sleeving for impregnation or encapsulation processes or for other specialized applications. Where necessary, the test methods in this document will be supplemented by appropriate impregnation or compatibility tests to suit the individual circumstances. This fourth edition cancels and replaces the third edition published in 2011.This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) major update of normative references; b) revision of Clause 5, with amendment of methods for measurements of bore and wall thickness; c) revision of Clause 11, to clarify that the longitudinal change test is done on expanded sleeving; d) revision of Clause 28, additional method D for flame propagation testing; e) revision of Clause 56, additional method for preparation of samples for adhesive peel test; f) addition of Clause 63, abrasion test method; g) addition of Clause 64, volume resistivity for semi-conducting materials; h) addition of Clause 65, outgassing; i) addition of Clause 66, resistance to weathering.
- Standard104 pagesEnglish languagesale 10% offe-Library read for1 day
IEC 60060-1:2025 is applicable to:
- dielectric tests with direct voltage;
- dielectric tests with alternating voltage;
- dielectric tests with impulse voltage;
- dielectric tests with combinations of the above.
This document is applicable to tests on equipment having its highest voltage for equipment Um above 1,0 kV AC and 1,5 kV DC.
This fourth edition cancels and replaces the third edition published in 2010. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
- The general layout and text have been updated and improved to make the standard easier to use, particularly the clauses for combined and composite test voltages.
- The positive tolerance of the front time of lightning impulse voltage has been extended for Um > 800 kV to 100 % (= 2,4 µs).
- For switching impulse voltage, a front time has been introduced, similar to lightning impulse voltage and with the new front time the standard switching impulse is defined as 170/2 500 µs.
- The requirements for precipitations have been adjusted depending on Um.
- A new Annex C, "Procedure for manual calculation from graphical waveforms" has been incorporated.
- No examples of software have been given in Annex D, "Guidance for implementing software for evaluation of lightning impulse voltage parameters".
- The annex relating to the "Background to the introduction of the test voltage factor for evaluation of impulses with overshoot" has been deleted.
- A new informative Annex F, "New definition of the front time of switching impulse voltage" has been incorporated.
NOTE 1 Alternative test procedures can be required to obtain reproducible and significant results. The choice of a suitable test procedure is considered by the relevant Technical Committee.
NOTE 2 For voltages Um above 800 kV it is possible that some specified procedures, tolerances and uncertainties will not be achievable.
- Standard83 pagesEnglish languagesale 10% offe-Library read for1 day
IEC 61326-2-6:2025 applies to the BASIC SAFETY and ESSENTIAL PERFORMANCE of IN VITRO DIAGNOSTIC MEDICAL ELECTRICAL EQUIPMENT (IVD MEE). This part of IEC 61326 applies to the BASIC SAFETY and ESSENTIAL PERFORMANCE of IVD MEE in the presence of electromagnetic disturbances and to electromagnetic disturbances emitted by IVD MEE.
BASIC SAFETY with regard to electromagnetic disturbances is applicable to all IVD MEE.
NOTE 1 Performance with respect to electromagnetic disturbances other than ESSENTIAL PERFORMANCE is the subject of IEC 61326-1:2020
NOTE 2 IT equipment can be a part of an IVD MEE, if it is required to maintain BASIC SAFETY or ESSENTIAL PERFORMANCE.
This edition includes the following significant technical changes with respect to the previous edition:
- Update of the document with respect to test levels and documentation.
- Standard70 pagesEnglish and French languagesale 15% off
IEC 61869-20:2025 This part of IEC 61869 specifies the requirements for the safe design and operation, and tests for the safety of instrument transformers whose highest voltage for equipment is higher than 1 kV AC or 1,5 kV DC.
Low power instrument transformers are not covered by this document.
- Standard18 pagesEnglish languagesale 10% offe-Library read for1 day
IEC 61557-9:2023 specifies the requirements for the insulation fault location system (IFLS) that localizes insulation faults in any part of the system in unearthed IT AC systems and unearthed IT AC systems with galvanically connected DC circuits having nominal voltages up to 1 000 V AC, as well as in unearthed IT DC systems with voltages up to 1 500 V DC, independent of the measuring principle. IEC 61557-9:2023 cancels and replaces the third edition published in 2014. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) new terms and definitions on maximum admissible locating AC and DC currents and voltages;
b) the requirements on locating current and locating voltage have been revised;
c) performance requirements have been added;
d) the test requirements for locating current and locating voltage have been revised;
e) the structure of this document has been adapted to that of IEC 61557-1:2019;
f) the limit values under Clause A.2 were adapted to fit the changed test methods in 6.2.3.
- Standard38 pagesEnglish languagesale 10% offe-Library read for1 day
IEC 60060-1:2025 is applicable to: - dielectric tests with direct voltage; - dielectric tests with alternating voltage; - dielectric tests with impulse voltage; - dielectric tests with combinations of the above. This document is applicable to tests on equipment having its highest voltage for equipment Um above 1,0 kV AC and 1,5 kV DC. This fourth edition cancels and replaces the third edition published in 2010. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - The general layout and text have been updated and improved to make the standard easier to use, particularly the clauses for combined and composite test voltages. - The positive tolerance of the front time of lightning impulse voltage has been extended for Um > 800 kV to 100 % (= 2,4 µs). - For switching impulse voltage, a front time has been introduced, similar to lightning impulse voltage and with the new front time the standard switching impulse is defined as 170/2 500 µs. - The requirements for precipitations have been adjusted depending on Um. - A new Annex C, "Procedure for manual calculation from graphical waveforms" has been incorporated. - No examples of software have been given in Annex D, "Guidance for implementing software for evaluation of lightning impulse voltage parameters". - The annex relating to the "Background to the introduction of the test voltage factor for evaluation of impulses with overshoot" has been deleted. - A new informative Annex F, "New definition of the front time of switching impulse voltage" has been incorporated. NOTE 1 Alternative test procedures can be required to obtain reproducible and significant results. The choice of a suitable test procedure is considered by the relevant Technical Committee. NOTE 2 For voltages Um above 800 kV it is possible that some specified procedures, tolerances and uncertainties will not be achievable.
- Standard83 pagesEnglish languagesale 10% offe-Library read for1 day
IEC 60060-2:2025 is applicable to complete measuring systems and to their components, used for the measurement of high voltages during laboratory and factory tests with direct voltage, alternating voltage and lightning and switching impulse voltages and combined and composite voltages as specified in IEC 60060-1. For measurements during on-site tests, see IEC 60060-3. The limits on uncertainties of measurements stated in this document apply to test levels stated in IEC 60071-1. The principles of this document apply also to higher levels but the uncertainty can be greater. This document: • defines the terms used; • describes methods to estimate the uncertainties of high-voltage measurements; • states the requirements that apply to measuring systems; • describes the methods for approving a measuring system and checking its components; • describes the procedures by which the user demonstrates that a measuring system meets the requirements of this document, including the limits set for the uncertainty of measurement. This fourth edition cancels and replaces the third edition published in 2010. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) The general layout and text has been updated and improved to make the standard easier to use. b) This document has been revised to align it with the fourth edition of IEC 60060-1. c) The treatment of measurement uncertainty estimation has been expanded. d) This document is now applicable to measuring systems used in testing at all standard insulation levels specified in IEC 60071-1. e) The measurement uncertainty requirement for the front time of the standard lighting impulse voltage has been changed from 10 % to 15 %, for testing at all standard insulation levels specified in IEC 60071-1. f) The parameter "time-to-peak" of the switching impulse defined in the third edition of IEC 60060-1:2010 has been replaced by "front time" in the fourth edition of IEC 60060-1. Necessary changes have been made in this document to accommodate this change in IEC 60060-1. g) Clause 10, Measurement of combined voltages and Clause 11, Measurement of composite voltages have been added. h) Clause B.1 has been significantly revised to align more closely with the provisions of Clause 5, including using the same nomenclature.
- Standard91 pagesEnglish languagesale 10% offe-Library read for1 day
IEC 60270:2025 is applicable to the charge-based measurement of partial discharges which occur in electrical apparatus, components or systems when tested with alternating voltages (AC) up to 500 Hz or with direct voltage (DC).
This document:
– defines the terms used;
– defines the quantities to be measured;
– describes the measurement frequencies as well as the test and measuring circuits which may be used;
– defines analogue and digital measuring methods required for common applications;
– specifies methods for calibration and requirements of instruments used for calibration;
– gives guidance on test procedures;
– gives some assistance concerning the discrimination of partial discharges from external interference.
The provisions of this document are used in the drafting of specifications relating to partial discharge measurements for specific power apparatus. It deals with electrical measurements of impulsive (short-duration) partial discharges, but reference is also made to non-electrical methods primarily used for partial discharge location (see Annex F). Diagnosis of the behaviour of specific power apparatus can be aided by digital processing of partial discharge data (see Annex E) and also by non-electrical methods that are primarily used for partial discharge location (see Annex F).
This document is primarily concerned with electrical measurement of partial discharge in terms of apparent charge for specific power apparatus made during tests with alternating voltage, but specific problems which arise when tests are made with direct voltage are considered in Clause 11.
The terminology, definitions, basic test circuits and procedures often also apply to tests at other frequencies, but special test procedures and measuring system characteristics which are not considered in this document may be required. For measurements at higher frequency ranges, see IEC TS 62478.
Annex A provides normative requirements for performance tests on calibrators.
This fourth edition cancels and replaces the third edition published in 2000, and Amendment 1:2015. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) Title modified.
b) Use with alternating voltages up to 500 Hz or with direct voltage.
c) Clear focus on charge-based partial discharge measurements.
d) Streamlined performance checks for partial discharge measurement system components.
e) Improved normative Annex A for performance tests on calibrators.
f) Revised and new informative Annexes.
In a future revision, this document will seek horizontal publication status in accordance with IEC Guide 108.
- Standard145 pagesEnglish and French languagesale 15% off
IEC 61869-20:2025 This part of IEC 61869 specifies the requirements for the safe design and operation, and tests for the safety of instrument transformers whose highest voltage for equipment is higher than 1 kV AC or 1,5 kV DC. Low power instrument transformers are not covered by this document.
- Standard18 pagesEnglish languagesale 10% offe-Library read for1 day
IEC 61554:2025 defines a system of dimensions for panel mounting of equipment. It is applicable to electrical and electrically operated indicating, recording and control instruments. The purpose of this document is to establish dimensional interchangeability between instruments made by different manufacturers.
- Standard29 pagesEnglish and French languagesale 15% off
IEC 61340-4-11:2025 specifies the electrostatic testing, design and safe use requirements for composite intermediate bulk containers (IBC) intended for use in hazardous areas.
Composite IBC are often filled with flammable liquids which can create an explosive atmosphere in the inner receptacle. The design requirements for composite IBC intended for such use are defined in 7.3.4.5 of IEC TS 60079-32-1:2013.
The test procedures described in this document can be used by manufacturers, suppliers and product users for product qualification and compliance verification of new and reconditioned composite IBC. Additionally, the requirements of this document can be used for testing the electrostatic properties of composite IBC, independent of any inspection periods.
Precautions regarding the use of composite IBC (e.g., stirring, cleaning etc.) are defined in 7.3.4.5 of IEC TS 60079-32-1:2013.
Compliance with the requirements of this document does not mitigate the need for full risk assessment.
- Standard27 pagesEnglish languagesale 10% offe-Library read for1 day
Identical adoption of future IEC/IEEE 63184 into EN IEC/IEEE 63184
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IEC 60684-2:2025 gives methods of test for flexible insulating sleeving, including heat-shrinkable sleeving, intended primarily for insulating electrical conductors and connections of electrical apparatus, although they can be used for other purposes. The tests specified are designed to control the quality of the sleeving but it is recognized that they do not completely establish the suitability of sleeving for impregnation or encapsulation processes or for other specialized applications. Where necessary, the test methods in this document will be supplemented by appropriate impregnation or compatibility tests to suit the individual circumstances. This fourth edition cancels and replaces the third edition published in 2011.This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) major update of normative references;
b) revision of Clause 5, with amendment of methods for measurements of bore and wall thickness;
c) revision of Clause 11, to clarify that the longitudinal change test is done on expanded sleeving;
d) revision of Clause 28, additional method D for flame propagation testing;
e) revision of Clause 56, additional method for preparation of samples for adhesive peel test;
f) addition of Clause 63, abrasion test method;
g) addition of Clause 64, volume resistivity for semi-conducting materials;
h) addition of Clause 65, outgassing;
i) addition of Clause 66, resistance to weathering.
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IEC 60404-18:2025 defines the general principle and technical details of the methods of measurement of the DC magnetic properties of permanent magnet materials in an open magnetic circuit using a superconducting magnet (SCM).
This method is applicable to permanent magnet materials, such as those specified in IEC 60404‑8‑1, the properties of which are presumed homogeneous throughout their volume.
There are two methods:
- the SCM-vibrating sample magnetometer (VSM) method;
- the SCM-extraction method.
This document also specifies methods to correct the influence of the self-demagnetizing field in the test specimen on the demagnetization curve obtained in an open magnetic circuit. The magnetic properties are determined from the corrected demagnetization curve.
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IEC 61788-27:2025 specifies a test method for the twist pitch measurement of Nb‑Ti/Cu and Nb‑Sn/Cu composite superconductors by an untwisting method.
The test method is applicable to Nb‑Ti/Cu and Nb‑Sn/Cu composite superconducting wires with monolithic structures, which have either a round cross section with a diameter ranging from 0,2 mm to 2 mm or a rectangular cross section that is equivalent in area to the round cross‑sectional wires. These wires possess a filament diameter ranging from 6 µm to 200 µm, a twist pitch between 5 mm and 50 mm, and a matrix of copper or copper alloy. This document uses nitric acid to remove the matrix (copper or copper alloy), so the surface of the composite superconducting wire can be plated with a material that is dissolvable by nitric acid.
Though uncertainty can increase, the method can apply to Nb‑Ti/Cu or Nb‑Sn/Cu composite superconducting wires when the parameters of cross-sectional area, filament diameter and twist pitch are out of the limit.
The test method specified in this document is expected to apply to other types of composite superconducting wires after some appropriate modifications.
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IEC TR 61340-1-1:2025 gives guidance on error consideration and uncertainty estimation in electrostatics and ESD control measurements. It provides guidance on minimizing measurement errors and estimating measurement uncertainties using practical methods. The document also outlines how measurement results can be expressed in a test report. It is important to note that this document serves as an informative guideline intended for individuals who already have a solid understanding of the basics of electrostatics theory and measurement techniques.
- Technical report27 pagesEnglish languagesale 15% off
IEC 61340-4-11:2025 specifies the electrostatic testing, design and safe use requirements for composite intermediate bulk containers (IBC) intended for use in hazardous areas. Composite IBC are often filled with flammable liquids which can create an explosive atmosphere in the inner receptacle. The design requirements for composite IBC intended for such use are defined in 7.3.4.5 of IEC TS 60079-32-1:2013. The test procedures described in this document can be used by manufacturers, suppliers and product users for product qualification and compliance verification of new and reconditioned composite IBC. Additionally, the requirements of this document can be used for testing the electrostatic properties of composite IBC, independent of any inspection periods. Precautions regarding the use of composite IBC (e.g., stirring, cleaning etc.) are defined in 7.3.4.5 of IEC TS 60079-32-1:2013. Compliance with the requirements of this document does not mitigate the need for full risk assessment.
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IEC 60060-2:2025 is applicable to complete measuring systems and to their components, used for the measurement of high voltages during laboratory and factory tests with direct voltage, alternating voltage and lightning and switching impulse voltages and combined and composite voltages as specified in IEC 60060-1. For measurements during on-site tests, see IEC 60060-3. The limits on uncertainties of measurements stated in this document apply to test levels stated in IEC 60071-1. The principles of this document apply also to higher levels but the uncertainty can be greater.
This document:
• defines the terms used;
• describes methods to estimate the uncertainties of high-voltage measurements;
• states the requirements that apply to measuring systems;
• describes the methods for approving a measuring system and checking its components;
• describes the procedures by which the user demonstrates that a measuring system meets the requirements of this document, including the limits set for the uncertainty of measurement.
This fourth edition cancels and replaces the third edition published in 2010. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) The general layout and text has been updated and improved to make the standard easier to use.
b) This document has been revised to align it with the fourth edition of IEC 60060-1.
c) The treatment of measurement uncertainty estimation has been expanded.
d) This document is now applicable to measuring systems used in testing at all standard insulation levels specified in IEC 60071-1.
e) The measurement uncertainty requirement for the front time of the standard lighting impulse voltage has been changed from 10 % to 15 %, for testing at all standard insulation levels specified in IEC 60071-1.
f) The parameter "time-to-peak" of the switching impulse defined in the third edition of IEC 60060-1:2010 has been replaced by "front time" in the fourth edition of IEC 60060-1. Necessary changes have been made in this document to accommodate this change in IEC 60060-1.
g) Clause 10, Measurement of combined voltages and Clause 11, Measurement of composite voltages have been added.
h) Clause B.1 has been significantly revised to align more closely with the provisions of Clause 5, including using the same nomenclature.
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IEC 60060-1:2025 is applicable to:
- dielectric tests with direct voltage;
- dielectric tests with alternating voltage;
- dielectric tests with impulse voltage;
- dielectric tests with combinations of the above.
This document is applicable to tests on equipment having its highest voltage for equipment Um above 1,0 kV AC and 1,5 kV DC.
This fourth edition cancels and replaces the third edition published in 2010. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
- The general layout and text have been updated and improved to make the standard easier to use, particularly the clauses for combined and composite test voltages.
- The positive tolerance of the front time of lightning impulse voltage has been extended for Um > 800 kV to 100 % (= 2,4 µs).
- For switching impulse voltage, a front time has been introduced, similar to lightning impulse voltage and with the new front time the standard switching impulse is defined as 170/2 500 µs.
- The requirements for precipitations have been adjusted depending on Um.
- A new Annex C, "Procedure for manual calculation from graphical waveforms" has been incorporated.
- No examples of software have been given in Annex D, "Guidance for implementing software for evaluation of lightning impulse voltage parameters".
- The annex relating to the "Background to the introduction of the test voltage factor for evaluation of impulses with overshoot" has been deleted.
- A new informative Annex F, "New definition of the front time of switching impulse voltage" has been incorporated.
NOTE 1 Alternative test procedures can be required to obtain reproducible and significant results. The choice of a suitable test procedure is considered by the relevant Technical Committee.
NOTE 2 For voltages Um above 800 kV it is possible that some specified procedures, tolerances and uncertainties will not be achievable.
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IEC 61869-20:2025 This part of IEC 61869 specifies the requirements for the safe design and operation, and tests for the safety of instrument transformers whose highest voltage for equipment is higher than 1 kV AC or 1,5 kV DC.
Low power instrument transformers are not covered by this document.
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Identical adoption of future IEC/IEEE 63184 into EN IEC/IEEE 63184
- Standard151 pagesEnglish languagesale 10% offe-Library read for1 day
IEC 60404-18:2025 defines the general principle and technical details of the methods of measurement of the DC magnetic properties of permanent magnet materials in an open magnetic circuit using a superconducting magnet (SCM). This method is applicable to permanent magnet materials, such as those specified in IEC 60404‑8‑1, the properties of which are presumed homogeneous throughout their volume. There are two methods: - the SCM-vibrating sample magnetometer (VSM) method; - the SCM-extraction method. This document also specifies methods to correct the influence of the self-demagnetizing field in the test specimen on the demagnetization curve obtained in an open magnetic circuit. The magnetic properties are determined from the corrected demagnetization curve.
- Standard37 pagesEnglish languagesale 10% offe-Library read for1 day
Identical adoption of future IEC/IEEE 63195-1 into EN IEC/IEEE 63195-1.
- Standard146 pagesEnglish languagesale 10% offe-Library read for1 day