Elektrotechnika

Komise : IEC/SC 17C (Assemblies)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 28.09.2022
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This part of IEC 62271 specifies requirements for internal arc classification of metal-enclosed pole-mounted AC switchgear installations with rated voltages above 1 kV and up to and including 52 kV with service frequencies up to and including 60 Hz. This document is applicable to three-phase, two-phase and single-phase open terminal equipment. Enclosures may include fixed and removable components and may be filled with fluid (liquid or gas) to provide insulation.

NOTE For the use of this document high-voltage (IEC 60050-601:1985, 601-01-27) is the rated voltage above 1 000 V. However, medium voltage (IEC 60050-601:1985, 601-01-28) is commonly used for distribution systems with voltages above 1 kV and generally applied up to and including 52 kV; refer to [1] of the Bibliography.

This document does not preclude that other equipment may be included in the same enclosure. In such a case, any possible influence of that equipment on the switchgear and controlgear is to be taken into account.

Oblast zaměření: Elektrické kabely
Komise : IEC/TC 20 (Electric cables)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 4.10.2022
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This International Standard specifies the nominal cross-sectional areas, in the range 0,5 mm² to 3500 mm², for conductors in electric power cables and cords of a wide range of types. Requirements for numbers and sizes of wires and resistance values are also included. These conductors include solid, stranded and Milliken, copper, aluminium and aluminium alloy conductors in cables for fixed installations and flexible copper conductors.

The standard does not apply to conductors for telecommunication purposes.

The applicability of this standard to a particular type of cable is as specified in the standard for the type of cable.

Unless indicated to the contrary in a particular clause, this standard relates to the conductors in the finished cable and not to the conductor as made or supplied for inclusion into a cable.

Informative annexes are included giving supplementary information covering temperature correction factors for resistance measurement (Annex B) and dimensional limits of circular conductors (Annex C).

Oblast zaměření: Točivé elektrické stroje
Komise : IEC/TC 2 (Rotating machinery)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 11.10.2022
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This standard applies primarily to brushes and brush-holders for cylindrical commutators and slip rings for electrical rotating machines. Some parts of this standard may cover other configurations, such as flat commutators or plain disks.

It defines the dimensions of brushes and their components, together with their tolerances:

dimensions of brush block (t, a, r),

angles α and β,

chamfer,

flexibles (shunts),

standard terminals.

It also covers the conventional designation of principal dimensions, the marking of brushes and the testing methods for the qualification of brushes after their manufacturing (except the brush grade material, covered by IEC 60413).

And finally, it specifies dimensions of the brush-holders that are linked to brushes.

Komise : IEC/SC 17A (Switching devices)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 11.10.2022
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This part of IEC 62271 is applicable to AC switching devices designed for indoor or outdoor installation, for operation at frequencies of 50 Hz and 60 Hz on systems having voltages above 1 000 V and applied for inductive current switching. It is applicable to switching devices (including circuit-breakers in accordance with IEC 62271-100) that are used to switch high‑voltage motor currents and shunt reactor currents and also to high-voltage contactors used to switch high-voltage motor currents as covered by IEC 62271-106.

Switching unloaded transformers, i.e. breaking transformer magnetizing current, is not considered in this document. The reasons for this are as follows:

Owing to the non-linearity of the transformer core, it is not possible to correctly model the switching of transformer magnetizing current using linear components in a test laboratory. Tests conducted using an available transformer, such as a test transformer, will only be valid for the transformer tested and cannot be representative for other transformers.

As detailed in IEC TR 62271-306, the characteristics of this duty are usually less severe than any other inductive current switching duty. Such a duty may produce severe overvoltages within the transformer winding(s) depending on the re‑ignition behaviour of the switching device and transformer winding resonance frequencies.

NOTE 1 The switching of tertiary reactors from the high-voltage side of the transformer is not covered by this document.

NOTE 2 The switching of shunt reactors earthed through neutral reactors is not covered by this document. However, the application of test results according to this document, on the switching of neutral reactor earthed reactors (4-leg reactor scheme), is discussed in IEC TR 62271-306.

Komise : IEC/TC 97 (Electrical installations for lighting and beaconing of aerodromes)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 11.10.2022
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This International Standard specifies protective provisions for the operation of lamp systems powered by series circuits in aeronautical ground lighting.

The protective provisions described here refer only to secondary supply systems for loads that are electrically separated from the series circuit.

This standard specifies the level of SELV, and alternatively PELV, under consideration of additional personnel protection during work on live secondary circuits by electrically skilled persons. This standard also covers the special operational features of aeronautical ground lighting and addresses the level of training and the requirements for maintenance procedures detailed in IEC 61821 and other national or regional regulation.

The requirements and tests are intended to set a specification framework for system designers, system installers, users, and maintenance personnel to ensure a safe and economic use of electrical systems in installations for the beaconing of aerodromes.

This standard complements existing IEC Aeronautical-Ground- Lighting (AGL) standards and can be used as a design specification.

Komise : IEC/TC 99 (Koordinace izolace a systémové inženýrství  vysokonapěťových elektrických instalací nad 1 kV AC a 1,5 kV DC)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 11.10.2022
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This part of IEC 61936 provides, in a convenient form, requirements for the design and the erection of DC installations in systems with nominal voltages above 1,5 kV DC, so as to provide safety and proper functioning for the use intended.

For the purpose of interpreting this standard, a DC installation is considered to be one of the following:

A converter station or DC switching station;

one (or more) DC generating or storage unit(s), such as solar farms or battery storage units, located on a single site, the DC installation includes DC equipment and cables with all associated power electronics, controlgear, switchgear and all electrical auxiliary systems. Connections between DC generating or storage units located on different sites are excluded;

DC installation erected on offshore facilities for the purpose of generation, transmission, distribution and/or storage of electricity; or

DC transition station (between overhead lines and underground cable or between different sections of underground cables).

This International Standard does not apply to the design and erection of any of the following:

overhead and underground lines between separate installations;

electric railways;

mining equipment and installations;

installations on ships according to IEC 60092 series and offshore units according to IEC 61892 series, which are used in the offshore petroleum industry for drilling, processing and storage purposes;

electrostatic equipment (e.g. electrostatic precipitators, spray-painting units);

test sites;

medical equipment, e.g. medical X-ray equipment;

valve hall or converter hall.

This International Standard does not apply to the requirements for carrying out live working on electrical installations.

This International Standard does not apply to the design of factory-built, type-tested thyristor valves, VSC valves and switchgear for which separate IEC standards exist.

Oblast zaměření: Elektrická příslušenství
Komise : IEC/SC 23E (Circuit-breakers and similar equipment for household use)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 18.10.2022
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Clause 1 of Part 1 is applicable except the first paragraph replaced by the following:

This document applies to residual current operated circuit-breakers, without integral overcurrent protection, for household and similar uses (hereafter referred to as RCCBs), classified according to subclause 4.1.1 of IEC 61008-1. RCCBs according to this part are intended for voltages not exceeding 440 V AC with frequencies of 50 Hz, 60 Hz or 50/60 Hz and currents not exceeding 125 A, intended principally for protection against shock hazard.

This document applies in conjunction with IEC 61008-1. It specifies requirements, tests and test sequences to verify compliance and is used for certification purposes.

Oblast zaměření: Elektrická příslušenství
Komise : IEC/SC 23E (Circuit-breakers and similar equipment for household use)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 18.10.2022
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Clause 1 of Part 1 is applicable except the first paragraph replaced by the following:

This document applies to residual current operated circuit-breakers, without integral overcurrent protection, for household and similar uses (hereafter referred to as RCCBs), classified according to subclauses 4.1.2, 4.1.3, 4.1.4, 4.1.5 and 4.1.6 of IEC 61008-1. RCCBs according to this part are intended for voltages not exceeding 440 V AC with frequencies of 50 Hz, 60 Hz or 50/60 Hz and currents not exceeding 125 A, intended principally for protection against shock hazard.

This document applies in conjunction with IEC 61008-1. It specifies requirements, tests and test sequences to verify compliance and is used for certification purposes.

Oblast zaměření: Elektrická příslušenství
Komise : IEC/SC 23E (Circuit-breakers and similar equipment for household use)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 18.10.2022
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Clause 1 of Part 1 is applicable except the first paragraph replaced by the following:

This document applies to residual current operated circuit-breakers, with integral overcurrent protection, for household and similar uses (hereafter referred to as RCBOs), classified according to subclause 4.1.1 of IEC 61009-1. RCBOs according to this part are intended for voltages not exceeding 440 V AC with frequencies of 50 Hz, 60 Hz or 50/60 Hz and currents not exceeding 125 A and rated short‑circuit capacities not exceeding 25 000 A for operation at 50 Hz or 60 Hz.

This document applies in conjunction with IEC 61009-1. It specifies requirements, tests and test sequences to verify compliance and is used for certification purposes.

Oblast zaměření: Elektrická příslušenství
Komise : IEC/SC 23E (Circuit-breakers and similar equipment for household use)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 18.10.2022
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Clause 1 of Part 1 is applicable except the first paragraph replaced by the following:

This document applies to residual current operated circuit-breakers, with integral overcurrent protection, for household and similar uses (hereafter referred to as RCBOs), classified according to clause 4.1.2, 4.1.3, 4.1.4, 4.1.5 and 4.1.6 of IEC 61009-1. RCBOs according to this part are intended for voltages not exceeding 440 V AC with frequencies of 50 Hz, 60 Hz or 50/60 Hz and currents not exceeding 125 A and rated short‑circuit capacities not exceeding 25 000 A for operation at 50 Hz or 60 Hz.

This document applies in conjunction with IEC 61009-1. It specifies requirements, tests and test sequences to verify compliance and is used for certification purposes.

Oblast zaměření: Elektrická příslušenství
Komise : IEC/SC 23E (Circuit-breakers and similar equipment for household use)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 18.10.2022
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This document gives general requirements and tests for residual current operated circuit-breakers without integral overcurrent protection for household and similar uses (hereafter referred to as RCCBs), for rated operational voltages not exceeding 440 V AC with rated frequencies of 50 Hz, 60 Hz or 50/60 Hz and rated currents not exceeding 125 A, intended principally for protection against shock hazard.

These devices are intended to provide fault protection (previously referred to as protection against indirect contact), the exposed conductive parts of the installation being connected to an appropriate earth electrode. They are also intended to be used to provide protection against fire hazards due to a persistent earth fault current, without the operation of the overcurrent protective device.

RCCBs having a rated residual operating current not exceeding 30 mA are used for fault protection and additional protection in the case of failure of the protective provisions against electric shock.

This document applies to devices performing simultaneously the functions of detection of the residual current, of comparison of the value of this current with the residual operating value and of opening of the protected circuit when the residual current exceeds this value.

NOTE 1 The requirements for RCCBs are in line with the group safety publication IEC 60755.

NOTE 2   RCCBs of type AC and type A are covered by the series of standard IEC 61008. RCCBs of type F and type B are covered by IEC 62423 in conjunction with IEC 61008 series

NOTE 3  Installation and selection rules for RCCBs are given in the IEC 60364 series.

NOTE 4      Installation and application rules of RCCBs in ZA is given in SANS 10142-1

RCCBs are intended to be operated by ordinary or uninstructed persons and designed not to require maintenance.

The requirements of this document apply for standard conditions (see 7.1). Additional requirements may be necessary for RCCBs used in locations having severe environmental conditions. They are intended for use in an environment with pollution degree 2 (see 7.3).

NOTE 5 For environments with higher pollution degrees, enclosures giving the appropriate degree of protection could be used.

NOTE 6 For RCCBs having a degree of protection higher than IP20 special constructions can be required.

RCCBs are suitable for isolation.

Special precautions (e.g. surge protective devices) may be necessary when excessive overvoltages are likely to occur on the supply side (for example in the case of supply through overhead lines, see IEC 60364-4-44 and IEC 60364-5-53).

RCCBs, with the exception of those with an uninterrupted neutral, are suitable for use in IT systems.

RCCBs of the general type are resistant to current surges, including the case where surge voltages (as a result of switching transients or induced by lightning) cause loading currents in the installation without occurrence of flashover.

RCCBs of type S are considered to be sufficiently proof against unwanted tripping even if the surge voltage causes a flashover and a follow-on current occurs.

NOTE 7 Surge protective devices installed downstream of the general type of RCCBs and connected in common mode can cause unwanted tripping.

Particular requirements are necessary for RCCBs intended to be used at frequencies other than 50 Hz or 60 Hz.

For RCCBs incorporated in, or intended only for association with socket-outlets, the requirements of this document may be used, as far as applicable, in conjunction with the requirements of IEC 60884-1 or the national requirements of the country where the product is placed on the market.

NOTE 8 Residual current-operated protective devices (RCDs) incorporated in, or intended only for association with socket-outlets, can either meet IEC 62640 or this document.

NOTE 9 In DK, plugs and socket-outlets are in accordance with the requirements of the heavy current regulations section 107.

NOTE 10 In the UK, the plug part associated with a RCCB complies with BS 1363-1 and the socket-outlet(s) associated with a RCCB complies with BS 1363-2. In the UK, the plug part and the socket-outlet(s) associated with a RCCB need not comply with any IEC 60884-1 requirements.

NOTE 11   In ZA, RCCBs are knows as earth leakage switches (ELSWs).

This document does not apply to:

RCCBs the current setting of which is adjustable without a tool.

RCCBs including batteries.

This document is not intended to be used alone and it is intended to be used in conjunction with the relevant product standard IEC 61008-2-1 or IEC 61008-2-2.

Oblast zaměření: Elektrická příslušenství
Komise : IEC/SC 23E (Circuit-breakers and similar equipment for household use)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 18.10.2022
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This document gives general rules for residual current operated circuit‑breakers with integral overcurrent protection for household and similar uses (hereafter referred to as RCBOs), for rated operational voltages not exceeding 440 V AC with rated frequencies of 50 Hz, 60 Hz or 50/60 Hz and rated currents not exceeding 125 A and rated short‑circuit capacities not exceeding 25 000 A.

These devices are intended to provide fault protection (previously referred to as protection against indirect contact), the exposed conductive parts of the installation being connected to an appropriate earth electrode and to protect against overcurrents the wiring installations of buildings and similar applications. They are also intended to be used to provide protection against fire hazards due to a persistent earth fault current, without the operation of the overcurrent protective device.

RCBOs having a rated residual operating current not exceeding 30 mA are used for fault protection and additional protection in the case of failure of the protective provisions against electric shock.

This document applies to devices performing simultaneously the functions of detection of the residual current, of comparison of the value of this current with the residual operating value and of opening of the protected circuit when the residual current exceeds this value, and also of performing the function of making, carrying and breaking overcurrents under specified conditions.

NOTE 1 The requirements for RCBOs are in line with the general safety requirements of IEC 60755.

NOTE 2   RCBOs of type AC and type A are covered by the series of standard IEC 61009. RCBOs of type F and type B are covered by IEC 62423 in conjunction with IEC 61009 series.

NOTE 3  Installation and selection rules for RCBOs are given in the IEC 60364 series.”

NOTE 4 The content of this document related to operation under residual current conditions is based on
IEC 61008-1. The content of this document related to protection against overcurrents is based on IEC 60898-1.

RCBOs are intended to be operated by ordinary or uninstructed persons and designed not to require maintenance.

The requirements of this document apply for standard conditions (see 7.1). Additional requirements may be necessary for RCBOs used in locations having severe environmental conditions. They are intended for use in an environment with pollution degree 2 (see 7.3).

NOTE 5 For environments with higher pollution degrees, enclosures giving the appropriate degree of protection could be used.

NOTE 6 For RCBOs having a degree of protection higher than IP20 special constructions can be required.

RCBOs are suitable for isolation.

Special precautions (e.g. surge protective devices) may be necessary when excessive overvoltages are likely to occur on the supply side (for example in the case of supply through overhead lines see IEC 60364-44 and IEC 60364‑5-53).

RCBOs, with the exception of those with an uninterrupted neutral, are suitable for use in IT systems.

RCBOs of the general type are resistant to current surges, including the case where surge voltages (as a result of switching transients or induced by lightning) cause loading currents in the installation without occurrence of flashover.

RCBOs of type S are considered to be sufficiently proof against unwanted tripping even if the surge voltage causes a flashover and a follow-on current occurs.

NOTE 7 Surge protective devices installed downstream of the general type of RCBOs and connected in common mode can cause unwanted tripping.

This document also applies to RCBOs obtained by the assembly of an adaptable residual current device with a circuit-breaker. The mechanical assembly shall be effected in the factory by the manufacturer, or on site, in which case the requirements of Annex G shall apply. It also applies to RCBOs having more than one rated current, provided that the means for changing from one discrete rating to another is not accessible in normal service and that the rating cannot be changed without the use of a tool.

Particular requirements are necessary for RCBOs intended to be used at frequencies other than 50 Hz or 60 Hz.

For RCBOs incorporated in, or intended only for association with socket-outlets, the requirements of this document may be used, as far as applicable, in conjunction with the requirements of IEC 60884-1 or the national requirements of the country where the product is placed on the market.

NOTE  8 Residual current-operated protective devices (RCDs) incorporated in, or intended only for association with socket-outlets, can either meet IEC 62640 or this document.

NOTE 9 In DK, plugs and socket-outlets are in accordance with the requirements of the heavy current regulations section 107.

NOTE 10 In the UK, the plug part associated with an RCBO complies with BS 1363-1 and the socket-outlet(s) associated with an RCBO complies with BS 1363-2. In the UK, the plug part and the socket-outlet(s) associated with an RCBO need not comply with any IEC 60884-1 requirements.

This document does not apply to:

RCBOs intended to protect motors;

RCBOs the current setting of which is adjustable without a tool;

RCBOs including batteries.

A guide for the coordination of RCBOs with fuses is given in Annex F.

This document is not intended to be used alone and it is intended to be used in conjunction with the relevant product standard IEC 61009-2-1 or IEC 61009-2-2.

Oblast zaměření: Akumulátorové baterie
Komise : IEC/TC 21 (Secondary cells and batteries)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 25.10.2022
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This International Standard specifies general tests and requirements for the performance of lithium secondary batteries with a nominal voltage of 12 V permanently installed in road vehicles not for propulsion. Replacement of secondary batteries permanently installed in road vehicles not for propulsion are covered by this standard.

The following are typical applications that utilize the batteries under the scope of this standard.

A power source for the starting of internal combustion engines, lighting, stop & start function, on-board auxiliary equipment and energy absorption for regeneration from braking.

The batteries primarily used for propulsion of electric vehicles (EV) including battery electric vehicles (BEV), hybrid electric vehicles (HEV), and plug-in hybrid electric vehicles (PHEV) are not covered by this standard.

This standard includes:

-electrical characteristics tests methods and requirements

-life duration tests method

This standard does not include:

-dimensions

-system communication protocol

-safety

Note: The safety aspects of the batteries are covered by IEC 63057

Komise : IEC/TC 31 (Electrical apparatus for explosive atmospheres)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 25.10.2022
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This part of IEC 60079 contains the specific requirements for the construction and testing of electrical pressurized equipment, of Type of Protection “p”, intended for use in explosive gas atmospheres or explosive dust atmospheres. It also includes the requirements for pressurized equipment containing a limited release of a flammable substance within the pressurized equipment.

This part of IEC 60079 supplements and modifies the general requirements of IEC 60079-0, except as indicated in Table 1. Where a requirement of this part of IEC 60079 conflicts with a requirement of IEC 60079-0, the requirements of this standard take precedence. 

Komise : IEC/TC 61 (Safety of household and similar electrical appliances)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 25.10.2022
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This clause of Part 1 is replaced by the following.

This part of IEC 60335 deals with the safety of electrical appliances incorporating emitters for exposing the skin to optical radiation (wavelength 100 nm to 1 mm), for household and similar use, their rated voltage being not more than 250 V for single-phase appliances and 480 V for other appliances including direct current (DC) supplied appliances and battery-operated appliances.

As far as practicable, this standard deals with the common hazards presented by appliances that are encountered by all persons using the appliances in tanning salons, beauty parlours and similar premises or at home. However, in general, it does not take into account

–   persons (including children) whose

physical, sensory or mental capabilities; or

lack of experience and knowledge

prevents them from using the appliance safely without supervision or instruction;

–   children playing with the appliance.

Attention is drawn to the fact that

–   for appliances intended to be used in vehicles or on board ships or aircraft, additional requirements can be necessary;

–   in many countries, additional requirements are specified by the national health authorities, the national authorities responsible for the protection of labour and similar authorities.

This standard does not apply to

–   appliances for skin or hair care (IEC 60335-2-23);

–   sauna heating appliances and infrared cabins (IEC 60335-2-53);

–   cosmetic and beauty care appliances incorporating lasers and intense light sources (IEC 60335-2-113);

–   appliances for medical purposes (IEC 60601);

–   appliances that use UV radiation for purposes other than tanning the skin;

–   appliances intended to be used in locations where special conditions prevail, such as the presence of a corrosive or explosive atmosphere (dust, vapour or gas).

Komise : IEC/TC 116 (Safety of motor-operated electric tools)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 25.10.2022
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IEC 62841-1:2014, Clause 1 is applicable, except as follows.

Addition:

This document applies to transportable magnetic drills which may include a liquid system.

Oblast zaměření: Elektrické kabely
Komise : IEC/TC 20 (Elektrické kabely)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 2.11.2022
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This part of IEC 60502 specifies the test requirements for type testing of accessories for power cables with rated voltages from 3,6/6 (7,2) kV up to 18/30 (36) kV, complying with IEC 60502-2 or other relevant cable standards.

Accessories for special applications, such as aerial cables, submarine or ship cables or hazardous situations (explosive environments, fire-resistant cables or seismic conditions), are not included.

It is not necessary to repeat these tests, once successfully completed, unless changes are made in the materials, design or manufacturing process which might affect the performance characteristics.

Test methods are included in IEC 61442.

NOTE This standard does not invalidate existing approvals of products achieved on the basis of national standards and specifications and/or the demonstration of satisfactory service performance. However, products approved according to such national standards or specifications cannot directly claim approval to this IEC standard. It may be possible, subject to agreement between supplier and purchaser, and/or the relevant conformity assessment body, to demonstrate that conformity to the earlier standard can be used to claim conformity to this standard, provided an assessment is made of any additional type testing that may need to be carried out. Any such additional testing that is part of a sequence of testing cannot be done separately.

Oblast zaměření: Elektrická příslušenství
Komise : IEC/SC 23A (Cable management systems)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 2.11.2022
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Amendment