M/552 - EMC

IEC Corrected Version

IEC Corrected Version

To give requirements and tests for electronic control devices, a general term to cover electronic switches, HBES/BACS switches and electronic extension units. It applies to electronic switches and to HBES/BACS switches, for alternating current (AC) only with a rated switching voltage not exceeding 250 V and a rated current not exceeding 16 A, intended for household and similar fixed electrical installations, either indoors or outdoors. It also applies to electronic extension units with a rated supply voltage not exceeding 250 V AC and 120 V DC. This Part of IEC 60669 also applies to electronic control devices which include integrated radio receivers and transmitters.

This clause of Part 1 is completely replaced by the following: This part of IEC 60669 applies to electronic control devices, a general term to cover electronic switches, home and building electronic systems (HBES) / building automation and control systems (BACS) switches and electronic extension units. It applies to electronic switches and to HBES/BACS switches, for alternating current (AC) only with a rated switching voltage not exceeding 250 V and a rated current not exceeding 16 A, intended for household and similar fixed electrical installations, either indoors or outdoors. It also applies to electronic extension units with a rated supply voltage not exceeding 250 V AC and 120 V DC, such as sensors and push buttons. This document also applies to electronic remote control switches (RCS) and electronic time delay switches (TDS). Particular requirements are given in Annex FF. Switches including only passive components such as resistors, capacitors, inductors, positive temperature coefficient (PTC) and negative temperature coefficient (NTC) components, varistors, printed wiring boards and connectors are not considered as electronic control devices. This document also applies to electronic switches and HBES/BACS switches for the operation of lighting equipment circuits and the control of the brightness of lighting equipment (dimmers) as well as the control of the speed of motors (for example, those used in ventilating fans) and for other purposes (for example, heating controls). The operation and/or control as mentioned above can be transmitted by an electronic signal via several media, for example, powerline (mains), twisted pair, optical fibre, radio frequency, infrared, etc. and are performed: - intentionally by a person via an actuating member, a key, a card, etc., via a sensing surface or a sensing unit, by means of touch, proximity, turn, optical, acoustic, thermal; - by physical means, for example, light, temperature, humidity, time, wind velocity, presence of people; - by any other influence. This document also applies to electronic control devices which include integrated radio receivers and transmitters. This document covers only those requirements for mounting boxes which are necessary for the tests on the electronic control devices. Requirements for general purpose mounting boxes are given in the relevant part, if any, of IEC 60670. This document is not intended to cover devices falling within the scope of IEC 60730 (all parts). Electronic control devices complying with this document are suitable for use at ambient temperature not normally exceeding 25 °C but occasionally reaching 35 °C with a lower limit of the ambient air temperature of −5 °C. NOTE 1 For lower temperatures, see Annex E. Functional safety aspects are not covered by this document. Functional safety requirements are covered by the standards of the controlled devices. In locations where special conditions prevail, such as in ships, vehicles and the like and in hazardous locations, for example where explosions are liable to occur, special construction and/or additional requirements may be required. This document is not intended to cover devices which are designed to be incorporated in appliances or are intended to be delivered together with a specific appliance and which are within the scope of IEC 60730 (all parts) or IEC 61058-1. Examples of designs of electronic switches and HBES/BACS switches and functions are shown in Annex AA. Additional requirements for electronic control devices using DLT-technology in accordance with IEC 62756-1 are given in Annex CC. Electrical interface specification for phase-cut dimmer used in phase-cut dimmed lighting systems are given for information only in Annex EE. NOTE 2 Electronic switches and HBES/BACS switches without a mechanical switch in the main circuit do not provide a "full off-state". Therefore, the circuit on the load side are to be considered to be live.

The scope of EN 61008-1 and EN 61008-2-1 or EN 61009-1 and EN 61009-2-1 applies with the following additions. This standard specifies requirements and tests for Type F and Type B RCDs (Residual current devices). Requirements and tests given in this standard are in addition to the requirements of Type A residual current devices according to EN 61008-2-1 or EN 61009-2-1. This standard can only be used together with EN 61008-1 and EN 61009-1.

IEC 61557-11:2009 specifies the requirements for testing equipment applied to the testing of the effectiveness of residual current monitors (RCMs) of type A and type B, which are already installed in distribution systems. This test equipment can be used in any kind of network like a TN, TT or IT system. The test equipment may also be used for testing directionally discriminating RCMs in IT-Systems.This part is to be used in conjunction with IEC 61557-1:2007, Part 1: General requirements.

This document applies only to static watt-hour meters of accuracy classes A, B and C for the measurement of
alternating current electrical active energy in 50 Hz or 60 Hz networks and it applies to their type tests.
NOTE 1 For general requirements, such as construction, EMC, safety, dependability etc., see the relevant EN 62052
series or EN 62059 series.
This document applies to electricity metering equipment designed to:
— measure and control electrical energy on electrical networks (mains) with voltage up to 1 000 V AC;
NOTE 2 For AC electricity meters, the voltage mentioned above is the line-to-neutral voltage derived from nominal
voltages. See EN 62052-31:2016, Table 7. EN 62052-31:2016 covers AC voltages only up to 600 V and Ed. 2 of
EN IEC 62052-31 will cover AC voltages up to 1000 V.
— have all functional elements, including add-on modules, enclosed in, or forming a single meter case with
exception of indicating displays;
— operate with integrated or detached indicating displays;
— be installed in specified matching sockets or racks;
— optionally, provide additional functions other than those for measurement of electrical energy.
Meters designed for operation with low power instrument transformers (LPITs as defined in the EN 61869
series) can be tested for compliance with this document only if such meters and their LPITs are tested together
and meet the requirements for directly connected meters.
NOTE 3 Modern electricity meters typically contain additional functions such as measurement of voltage magnitude,
current magnitude, power, frequency, power factor, etc.; measurement of power quality parameters; load control functions;
delivery, time, test, accounting, recording functions; data communication interfaces and associated data security functions.
The relevant standards for these functions could apply in addition to the requirements of this document. However, the
requirements for such functions are outside the scope of this document.
NOTE 4 Product requirements for power metering and monitoring devices (PMDs) and measurement functions such as
voltage magnitude, current magnitude, power, frequency, etc., are covered in EN 61557-12:2008. However, devices
compliant with EN 61557-12:2008 are not intended to be used as billing meters unless they are also compliant with the
EN IEC 62052-11:2021/A11:2022 and EN 50470-3:2022 standards.
NOTE 5 Product requirements for power quality instruments (PQIs) are covered in EN 62586-1:2017. Requirements for
power quality measurement techniques (functions) are covered in EN 61000-4-30:2015. Requirements for testing of the
power quality measurement functions are covered in EN 62586-2:2017.
This document does not apply to:
— meters for which the line-to-neutral voltage derived from nominal voltages exceeds 1 000 V AC;
— meters intended for connection with low power instrument transformers (LPITs as defined in the EN 61869
series) when tested without such transformers;
— metering systems comprising multiple devices (except of LPITs) physically remote from one another;
— portable meters;
NOTE 6 Portable meters are meters that are not permanently connected.
— meters used in rolling stock, vehicles, ships and airplanes;
— laboratory and meter test equipment;
reference standard meters;
— data interfaces to the register of the meter;
— matching sockets or racks used for installation of electricity metering equipment;
— any additional functions provided in electrical energy meters.
This document does not cover measures for the detection and prevention of fraudulent attempts to compromise
meter’s performance (tampering).
NOTE 7 Nevertheless, specific tampering detection and prevention requirements, and test methods, as relevant for a
particular market are subject to the agreement between the manufacturer and the purchaser.
NOTE 8 Specifying requirements and test methods for fraud detection and prevention would be counterproductive, a

This part of IEC 62052 specifies requirements and associated tests, with their appropriate conditions for type testing of AC and DC electricity meters. This document details functional, mechanical, electrical and marking requirements, test methods, and test conditions, including immunity to external influences covering electromagnetic and climatic environments.

This document specifies statistical considerations for the evaluation of unwanted radio frequency emissions of mass-produced products. NOTE 1 It is based on CISPR TR 16-4-3. The reasons for such statistical considerations are: a) that the abatement of interference aims that the majority of the products to be approved shall not cause interference; b) that the CISPR limits should be suitable for the purpose of type approval of mass-produced products as well as approval of single-produced products; c) that to ensure compliance of mass-produced products with the CISPR limits, statistical techniques have to be applied; d) that it is important for international trade that the limits shall be interpreted in the same way in every country. Therefore, this document specifies requirements and provides guidance based on statistical techniques. EMC compliance of mass-produced products with the requirements of this document are based on the application of statistical techniques that reassure the consumer, with an 80 % degree of confidence, that 80 % of the products of a type being investigated comply with the limits for unintended radio frequency emission. This document does not define limits or measuring methods. It can be used only after measurements of unwanted radio frequency emissions have been performed according to the applicable standard for the unwanted radio frequency emissions. NOTE 2 Clause 4 gives some general requirements on the interpretation of CISPR radio disturbance limits and specifies different methods, which can be used alternatively. Clause 5 gives some specific requirements for certain product groups. NOTE 3 This document does not give a calculation method about the manufacturer’s risk, whether a type of products will be accepted during a second statistical evaluation. More information on the acceptance probability for a repeated measurement is given in CISPR TR 16 4 3, Edition 2.1, Annex D.

This document applies only to static watt-hour meters of accuracy classes A, B and C for the measurement of alternating current electrical active energy in 50 Hz or 60 Hz networks and it applies to their type tests. NOTE 1 For general requirements, such as construction, EMC, safety, dependability etc., see the relevant EN 62052 series or EN 62059 series. This document applies to electricity metering equipment designed to: - measure and control electrical energy on electrical networks (mains) with voltage up to 1 000 V AC; NOTE 2 For AC electricity meters, the voltage mentioned above is the line-to-neutral voltage derived from nominal voltages. See EN 62052-31:2016, Table 7. EN 62052 31:2016 covers AC voltages only up to 600 V and Ed. 2 of EN IEC 62052 31 will cover AC voltages up to 1000 V. - have all functional elements, including add-on modules, enclosed in, or forming a single meter case with exception of indicating displays; - operate with integrated or detached indicating displays; - be installed in specified matching sockets or racks; - optionally, provide additional functions other than those for measurement of electrical energy. Meters designed for operation with low power instrument transformers (LPITs as defined in the EN 61869 series) can be tested for compliance with this document only if such meters and their LPITs are tested together and meet the requirements for directly connected meters. NOTE 3 Modern electricity meters typically contain additional functions such as measurement of voltage magnitude, current magnitude, power, frequency, power factor, etc.; measurement of power quality parameters; load control functions; delivery, time, test, accounting, recording functions; data communication interfaces and associated data security functions. The relevant standards for these functions could apply in addition to the requirements of this document. However, the requirements for such functions are outside the scope of this document. NOTE 4 Product requirements for power metering and monitoring devices (PMDs) and measurement functions such as voltage magnitude, current magnitude, power, frequency, etc., are covered in EN 61557-12:2008. However, devices compliant with EN 61557-12:2008 are not intended to be used as billing meters unless they are also compliant with the EN IEC 62052-11:2021/A11:2022 and EN 50470-3:2022 standards. NOTE 5 Product requirements for power quality instruments (PQIs) are covered in EN 62586-1:2017. Requirements for power quality measurement techniques (functions) are covered in EN 61000-4-30:2015. Requirements for testing of the power quality measurement functions are covered in EN 62586-2:2017. This document does not apply to: - meters for which the line-to-neutral voltage derived from nominal voltages exceeds 1 000 V AC; - meters intended for connection with low power instrument transformers (LPITs as defined in the EN 61869 series) when tested without such transformers; - metering systems comprising multiple devices (except of LPITs) physically remote from one another; - portable meters; NOTE 6 Portable meters are meters that are not permanently connected. - meters used in rolling stock, vehicles, ships and airplanes; - laboratory and meter test equipment; - reference standard meters; - data interfaces to the register of the meter; - matching sockets or racks used for installation of electricity metering equipment; - any additional functions provided in electrical energy meters. This document does not cover measures for the detection and prevention of fraudulent attempts to compromise meter’s performance (tampering). [...]

This part of IEC 62052 specifies requirements and associated tests, with their appropriate conditions for type testing of AC and DC electricity meters. This document details functional, mechanical, electrical and marking requirements, test methods, and test conditions, including immunity to external influences covering electromagnetic and climatic environments.

IEC 61557-11:2009 specifies the requirements for testing equipment applied to the testing of the effectiveness of residual current monitors (RCMs) of type A and type B, which are already installed in distribution systems. This test equipment can be used in any kind of network like a TN, TT or IT system. The test equipment may also be used for testing directionally discriminating RCMs in IT-Systems.This part is to be used in conjunction with IEC 61557-1:2007, Part 1: General requirements.

IEC 61557-3:2019 is available as IEC 61557-3:2019 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 61557-3:2019 specifies the requirements applicable to equipment for measuring the loop impedance between a line conductor and protective conductor; between a line conductor and neutral; or between two line conductors by using the voltage drop when the circuit under test is loaded. IEC 61557-3:2019 cancels and replaces the second edition published in 2007. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) addition of equirements as regards the measurement category; b) addition of new requirements for operating instructions; c) alignment of the structure with that of the whole IEC 61557 series.

IEC 61557-7:2019 is available as IEC 61557-7:2019 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 61557-7:2019 specifies the requirements applicable to measuring equipment for testing the phase sequence in three-phase distribution systems. Indication of the phase sequence can be mechanical, visual and/or audible. This document does not apply to additional measurements for other quantities. It does not apply to monitoring relays. IEC 61557-7:2019 cancels and replaces the second edition published in 2007. This edition constitutes a technical revision. This edition includes the following changes with respect to the previous edition: a) alignment of the structure with that of the whole IEC 61557 series; b) updated requirements in 4.3 in accordance with new editions of IEC 61010-1 and IEC 61010-031; c) the information on markings was extended; d) the information on the operating instructions was extended; e) complement to the information on the testing of leads; f) test leads for insulated conductors were introduced; g) Annex B was added with information on phase sequence tests and indications.

This annex applies to RCBOs with one residual current protection function and several independent two-pole overcurrent protection functions.

EN-IEC 60947-5-2 applies to inductive and capacitive proximity switches that sense the presence of metallic and/or non-metallic objects, ultrasonic proximity switches that sense the presence of sound reflecting objects, photoelectric proximity switches that sense the presence of objects and non-mechanical magnetic proximity switches that sense the presence of objects with a magnetic field. Products covered by the scope of this document are not subjected to defined behaviours under fault conditions. Proximity switches with defined behaviour are covered by IEC 60947-5-3 and have to fulfil additional requirements. These proximity switches are self-contained, have semiconductor switching element(s) and are intended to be connected to circuits, the rated voltage of which does not exceed 250 V 50 Hz/60 Hz AC RMS or 300 V DC. Examples of typical applications for in-scope products: - factory automation and machinery industry; - logistic and packaging industry; - conveyor belts, lifts; - process industry; - power plants. Special applications (e.g. corrosive atmosphere) can cause additional requirements. This document is not intended to cover proximity switches with analogue outputs. The object of this document is to state for proximity switches: - definitions; - classification; - characteristics; - product information; - normal service, mounting and transport conditions; - constructional and performance requirements; - tests to verify rated characteristics. Products covered by the scope of this document are expected to be selected, installed, and maintained by skilled personnel only.

EN-IEC 60947-5-2 applies to inductive and capacitive proximity switches that sense the presence of metallic and/or non-metallic objects, ultrasonic proximity switches that sense the presence of sound reflecting objects, photoelectric proximity switches that sense the presence of objects and non-mechanical magnetic proximity switches that sense the presence of objects with a magnetic field. Products covered by the scope of this document are not subjected to defined behaviours under fault conditions. Proximity switches with defined behaviour are covered by IEC 60947-5-3 and have to fulfil additional requirements. These proximity switches are self-contained, have semiconductor switching element(s) and are intended to be connected to circuits, the rated voltage of which does not exceed 250 V 50 Hz/60 Hz AC RMS or 300 V DC. Examples of typical applications for in-scope products: - factory automation and machinery industry; - logistic and packaging industry; - conveyor belts, lifts; - process industry; - power plants. Special applications (e.g. corrosive atmosphere) can cause additional requirements. This document is not intended to cover proximity switches with analogue outputs. The object of this document is to state for proximity switches: - definitions; - classification; - characteristics; - product information; - normal service, mounting and transport conditions; - constructional and performance requirements; - tests to verify rated characteristics. Products covered by the scope of this document are expected to be selected, installed, and maintained by skilled personnel only.

IEC Corrected version

This part of IEC 61557 defines minimum performance requirements for non-contact AC voltage
indicators to reduce the risk of electric shock for the testing person and bystanders caused by
the wrong interpretation of the indication.
Products designed and manufactured in accordance with this document are for use by
(electrically) skilled persons only. Non-contact AC voltage indicators are not designed for
testing the absence of the operating voltage.

This part of IEC 61557 specifies requirements for power metering and monitoring devices (PMD) that measure and monitor the electrical quantities within electrical distribution systems, and optionally other external signals. These requirements also defin the performance of PMD in single- and three-phace AC or DC systems having rated voltages up to 1000 V AC or up to 1500 V DC.
These devices are fixed or portable. They are intended to be used indoors and/or outdoors.
Power metering and monitoring devices  (PMD), as defined in this document, give additional safety information, which aids the verification of the installation and enhances the performance of the distribution systems.
Additionally, this document specifies requirements for measurement functions dedicated to metering and monitoring of electrical parameters called power metering and monitoring function (PMF) which can be embedded in equipment (EMPF) that is not classified as PMD and for which the main function is not power metering and monitoring.
Requirements for power metering and monitoring function (PMF) and additional requirements for equipments embedding power metering and monitoring function (EPMF) are described in Annex H.
The power metering and monitoring devices (PMD) for electrical parameters described in this document are used for general industrial and commercial applications.
This document does not address functional safety and cyber security aspects.
This document is not applicable to:
- electricity metering equipment that complies with IEC 62053-21, IEC 62053-22, IEC 62053-23 and IEC 62053-24. Nevertheless, uncertainties defined in this document for active and reactive energy measurement are derived from those defined in IEC 62053 (all parts);
- the measurement and monitoring of electrical parameters defined in IEC 61557-2 to IEC 61557-9 and IEC 61557-13 or in IEC 62020;
- power quality instrument (PQI) according IEC 62586 (all parts);
- devices covered by IEC 60051 (all parts) (direct acting analogue electrical measuring instrument).
Note 1 Generally such types of devices are used in the following applications or for the following general needs:
- energy management inside the installation, such as facilitating the implementation of documents such as ISO 50001 and IEC 60364-8-1;
- monitoring and/or measurement of electrical parameters;
- measurement and/or monitoring of the quality of energy inside commercial/industrial installations.
Note 2 A measuring and monitoring device of electrical parameters usually consists of several functional modules. All or some of the functional modules are combined in one device. Examples of fuctnional modules are:
- measurement and monitoring of several electrical parameters simultaneously;
- energy measurement and/or monitoring, as well as sometimes compliance with aspects of building regulations;
- alarms functions;
- demand side quality (current and voltage harmonics, over/under voltages, voltage dips and swells, etc.).
Note 3 PMD are historically called power meter, power monitor, power monitor device, power energy monitoring device, power analyser, multifunction meter, measuring multifunction equipment, energe meters.
Note 4 Metering, measuring and monitoring applications are explained in Annex A.

IEC Corrected version

The contents of the corrigendum of January 2022 have been included in this copy.

IEC 61557-12:2018 is available as IEC 61557-12:2018 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 61557-12:2018 specifies requirements for power metering and monitoring devices (PMD) that measure and monitor the electrical quantities within electrical distribution systems, and optionally other external signals. These requirements also define the performance in single- and three-phase AC or DC systems having rated voltages up to 1 000 V AC or up to 1 500 V DC. These devices are fixed or portable. They are intended to be used indoors and/or outdoors. Power metering and monitoring devices (PMD), as defined in this document, give additional safety information, which aids the verification of the installation and enhances the performance of the distribution systems. The power metering and monitoring devices (PMD) for electrical parameters described in this document are used for general industrial and commercial applications. This document does not address functional safety and cyber security aspects. This document is not applicable for: – electricity metering equipment that complies with IEC 62053-21, IEC 62053-22, IEC 62053-23 and IEC 62053-24. Nevertheless, uncertainties defined in this document for active and reactive energy measurement are derived from those defined in IEC 62053 (all parts); – the measurement and monitoring of electrical parameters defined in IEC 61557-2 to IEC 61557-9 and IEC 61557-13 or in IEC 62020; – power quality instrument (PQI) according IEC 62586 (all parts); – devices covered by IEC 60051 (all parts) (direct acting analogue electrical measuring instrument). IEC 61557-12:2018 cancels and replaces the first edition published in 2007. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) PMD-A has been withdrawn due the fact these devices are now mainly covered by the IEC 62586 series of standards. b) Three categories of PMD have been created with a list of minimum required functions for each category. c) Added a new Annex A explaining the different applications linked to the relevant standards and devices, and another new Annex C about the power factor conventions.

This part of IEC 61557 specifies requirements for power metering and monitoring devices (PMD) that measure and monitor the electrical quantities within electrical distribution systems, and optionally other external signals. These requirements also defin the performance of PMD in single- and three-phace AC or DC systems having rated voltages up to 1000 V AC or up to 1500 V DC. These devices are fixed or portable. They are intended to be used indoors and/or outdoors. Power metering and monitoring devices (PMD), as defined in this document, give additional safety information, which aids the verification of the installation and enhances the performance of the distribution systems. Additionally, this document specifies requirements for measurement functions dedicated to metering and monitoring of electrical parameters called power metering and monitoring function (PMF) which can be embedded in equipment (EMPF) that is not classified as PMD and for which the main function is not power metering and monitoring. Requirements for power metering and monitoring function (PMF) and additional requirements for equipments embedding power metering and monitoring function (EPMF) are described in Annex H. The power metering and monitoring devices (PMD) for electrical parameters described in this document are used for general industrial and commercial applications. This document does not address functional safety and cyber security aspects. This document is not applicable to: - electricity metering equipment that complies with IEC 62053-21, IEC 62053-22, IEC 62053-23 and IEC 62053-24. Nevertheless, uncertainties defined in this document for active and reactive energy measurement are derived from those defined in IEC 62053 (all parts); - the measurement and monitoring of electrical parameters defined in IEC 61557-2 to IEC 61557-9 and IEC 61557-13 or in IEC 62020; - power quality instrument (PQI) according IEC 62586 (all parts); - devices covered by IEC 60051 (all parts) (direct acting analogue electrical measuring instrument). Note 1 Generally such types of devices are used in the following applications or for the following general needs: - energy management inside the installation, such as facilitating the implementation of documents such as ISO 50001 and IEC 60364-8-1; - monitoring and/or measurement of electrical parameters; - measurement and/or monitoring of the quality of energy inside commercial/industrial installations. Note 2 A measuring and monitoring device of electrical parameters usually consists of several functional modules. All or some of the functional modules are combined in one device. Examples of fuctnional modules are: - measurement and monitoring of several electrical parameters simultaneously; - energy measurement and/or monitoring, as well as sometimes compliance with aspects of building regulations; - alarms functions; - demand side quality (current and voltage harmonics, over/under voltages, voltage dips and swells, etc.). Note 3 PMD are historically called power meter, power monitor, power monitor device, power energy monitoring device, power analyser, multifunction meter, measuring multifunction equipment, energe meters. Note 4 Metering, measuring and monitoring applications are explained in Annex A.

No scope available

This part of IEC 61557 defines minimum performance requirements for non-contact AC voltage indicators to reduce the risk of electric shock for the testing person and bystanders caused by the wrong interpretation of the indication. Products designed and manufactured in accordance with this document are for use by (electrically) skilled persons only. Non-contact AC voltage indicators are not designed for testing the absence of the operating voltage.

IEC corrected version

IEC 61557-5:2019 is available as IEC 61557-5:2019 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 61557-5:2019 specifies the requirements applicable to measuring equipment for measuring the resistance to earth using an AC voltage. IEC 61557-5:2019 cancels and replaces the second edition published in 2007. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) definitions and symbols in Clause 3 modified; b) subclauses in Clause 4 restructured and aligned with other parts of the series; c) limits for reduced voltages 25 V RMS or 35 V peak removed from 4.5; d) requirements for clamps added; e) marking for rated voltages to earth and measurement category added to Clause 5; f) warning about absence of hazardous voltage added in Clause 5; g) the term "percentage operating uncertainty" replaced by "operating uncertainty" in Clause 6; h) equation for uncertainty corrected in Table 1; i) new Annex A on test measurements with loop clamps added.

IEC 61557-4:2019 is available as IEC 61557-4:2019 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 61557-4:2019 specifies the requirements applicable to equipment for measuring the resistance of earth conductors, protective earth conductors and conductors for equipotential bonding, including their connections and terminals, with an indication of the measured value or an indication of the limits. IEC 61557-4:2019 cancels and replaces the second edition published in 2007. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) complement to the measurement category in Clause 4; b) correction of the equation for operating uncertainty; c) complement to the requirements for measuring with DC; d) alignment of the structure with that of the whole IEC 61557 series.

IEC 61557-1:2019 is available as IEC 61557-1:2019 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 61557-1:2019 specifies the general requirements applicable to measuring and monitoring equipment for testing the electrical safety in low-voltage distribution systems with nominal voltages up to 1 000 V AC and 1 500 V DC. When measuring equipment or measuring installations involve measurement tasks of various measuring equipment covered by this series of standards, then the part of this series relevant to each of the measurement tasks is applicable. Other parts of IEC 61557 can specify additional requirements or deviations. This document does not cover functional safety or cybersecurity. IEC 61557-1:2019 cancels and replaces the second edition published in 2007. This edition constitutes a technical revision. This third edition includes the following significant technical changes with respect to the previous edition: a) terms aligned with IEC 60050; b) measurement of uncertainty revised according to the equations in 4.2 of ISO/IEC Guide 98-3:2008 (GUM); c) updated references for safety and EMC requirements; d) updated references for marking and operating instructions; e) updated references for testing safety and EMC; f) Annex A contains an explanation of GUM; g) Annex B addresses environmental aspects.

IEC 61557-6:2019 is available as IEC 61557-6:2019 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 61557-6:2019 specifies the requirements applicable to measuring equipment for testing the effectiveness of protective measures of residual current devices (RCD) installed in TT, TN and IT systems. It is not the purpose of this document to verify the RCD according to their product standards. IEC 61557-6:2019 cancels and replaces the second edition published in 2007. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) addition of requirements for testing a new type of RCD; b) addition of requirements for type B RCDs (former Annex B); c) addition of new Annex B on recommended tripping times; d) alignment of the structure with that of the whole IEC 61557 series.

IEC 62135-2:2020 is available as IEC 62135-2:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 62135-2:2020 is applicable to equipment for resistance welding and allied processes which are connected to mains supplies with rated voltages up to 1 000 V AC RMS. This document does not define safety requirements. This third edition cancels and replaces the second edition published in 2015. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - update of the applicable limits related to the updated references; - implementation of radiated magnetic field requirements.

IEC 60974-10:2014 specifies a) applicable standards and test methods for radio-frequency (RF) emissions; b) applicable standards and test methods for harmonic current emission, voltage fluctuations and flicker; c) immunity requirements and test methods for continuous and transient, conducted and radiated disturbances including electrostatic discharges. This standard is applicable to equipment for arc welding and allied processes, including power sources and ancillary equipment, for example wire feeders, liquid cooling systems and arc striking and stabilizing devices. This third edition cancels and replaces the second edition published in 2007 and constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - inclusion of optional use of a decoupling network and a load outside the test chamber; - inclusion of an alternative test setup for portable equipment; - inclusion of test conditions for complex controls, liquid cooling systems and arc striking and stabilizing devices; - update of the applicable limits related to the updated reference to CISPR 11; - exclusion of the use of narrow band relaxations for RF emission limits; - update of the applicable limits for harmonics and flicker and inclusion of flow-charts related to the updated reference to IEC 61000-3-11 and IEC 61000-3-12; - update of the requirements for voltage dips related to the updated reference to IEC 61000-4-11 and IEC 61000-4-34; - update of the informative annex for installation and use; - inclusion of symbols to indicate the RF equipment class and restrictions for use.

IEC 61557-2:2019 is available as IEC 61557-2:2019 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 61557-2:2019 specifies the requirements applicable to equipment for measuring the insulation resistance of equipment and installations in the de-energized state IEC 61557-2:2019 cancels and replaces the second edition published in 2007. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) addition of requirements as regards measurement category; b) addition of new requirements for operating instructions; c) alignment of the structure with that of the the whole IEC 61557 series.

No scope available

IEC corrected version

NEXT ACTION: TB ACTION BY 2021-04-23

The contents of the corrigendum of January 2022 have been included in this copy.

No scope available

NEXT ACTION: TB ACTION BY 2021-04-23

This annex applies to RCBOs with one residual current protection function and several independent two-pole overcurrent protection functions.

This part of IEC 62053 applies only to transformer operated static watt-hour meters of accuracy classes 0,1S, 0,2S and 0,5S for the measurement of alternating current electrical active energy in 50 Hz or 60 Hz networks and it applies to their type tests only.

This part of IEC 62053 applies only to static var-hour meters of accuracy classes 0,5S, 1S, 1, 2 and 3 for the measurement of alternating current electrical reactive energy in 50 Hz or 60 Hz networks and it applies to their type tests only.

This part of IEC 62053 applies only to static var-hour meters of accuracy classes 2 and 3 for the measurement of alternating current electrical reactive energy in 50 Hz or 60 Hz networks and it applies to their type tests only.

This part of IEC 62053 applies only to static watt-hour meters of accuracy classes 0,5, 1 and 2 for the measurement of alternating current electrical active energy in 50 Hz or 60 Hz networks and it applies to their type tests only.

This document applies to residual current monitors for household and similar purposes,
having rated operational voltages and a rated voltage of the monitored circuit not exceeding
440 V AC and rated currents not exceeding 125 A.
NOTE 1 The standard for residual current monitors having rated operational voltages and a rated voltage of the
monitored circuit exceeding 440 V AC is in preparation, as IEC 62020-2.
RCMs are intended to monitor the residual current of the installation and to give a warning if
the residual current between a live part and an exposed conductive part or earth exceeds a
predetermined level.
RCMs covered by this document are not intended to be used as protective devices.
RCMs detect residual currents circulating in an AC circuit (e.g. residual alternating current,
residual pulsating direct current, residual smooth direct current), whether suddenly applied or
slowly rising.
NOTE 2 RCMs for DC systems are under consideration.
This document applies to monitors performing simultaneously the functions of detection of the
residual current, of comparison of the value of this current with the residual operating current
of the device and providing the specified warning signal(s) when the residual current exceeds
this value.
RCMs supplied by internal batteries are not covered by this document.
The requirements of this document apply for standard conditions (see 7.1). Additional
requirements can be necessary for RCMs used in locations having severe environmental
conditions.
RCMs are intended for use in an environment with pollution degree 2 and overvoltage
category III. For an environment with a higher pollution degree, enclosures giving the
appropriate degree of protection are used.
RCMs in compliance with this document are suitable for use in TN, TT, and IT systems.
This document does not cover Insulation Monitoring Devices (IMDs), which are covered by the
scope of IEC 61557-8.
NOTE 3 An RCM is distinguished from an IMD in that it is passive in its monitoring function and only responds to
an unbalanced fault current in the installation being monitored. An IMD is active in its monitoring and measuring
functions in that it can measure the balanced and unbalanced insulation resistance or impedance in the installation
(see IEC 61557-8).

In addition to the requirements of IEC 61326-1, this part of IEC 61326 specifies more detailed
test configurations, operational conditions and performance criteria for transducers with
integrated or remote signal conditioning.
This document applies only to transducers characterized by their ability to transform, with the
aid of an auxiliary energy source, a non-electric quantity to a process-relevant electrical signal,
and to output the signal at one or more PORTS. This document includes transducers for electrochemical
and biological measured quantities.
The transducers covered by this document can be powered by AC or DC voltage and/or by
battery or with internal power supply.
Transducers referred to by this document comprise at least the following items (see Figure 101
and Figure 102):
– one or more elements for transforming a non-electrical input quantity to an electrical
quantity;
– a TRANSMISSION LINK for transferral of the electrical quantity to a component for signal
conditioning;
– a unit for signal conditioning that converts the electrical quantity to a process-relevant
electrical signal;
– an enclosure for enclosing the above-stated components fully or in parts.
Transducers referred to by this document can also have the following items (see Figure 101
and Figure 102):
– a communication and control unit;
– a display unit;
– control elements such as keys, buttons, switches, etc.;
– transducer output signals (for example, switch outputs, alarm outputs) which are clearly
assigned to the input signal(s);
– transducers with signal conditioning which may be integrated or remote.
The manufacturer specifies the environment for which the product is intended to be used and
utilizes the corresponding test levels of IEC 61326-1.
Additional requirements and exceptions for specific types of transducers are given in Annex AA,
Annex BB and Annex CC to this document.