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Komise : IEC/SC 121A (Low-voltage switchgear and controlgear)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 31.07.2018
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Replace the existing first sentence of second paragraph with the following:

This standard takes into consideration two typical rated voltage areas:

Replace the existing third paragraph with the following:

This standard does not apply to contacts used in:

functional safety area. In case of contacts used in functional safety area, Annex N of IEC 60947-5-1:2016 shall apply;

very low energy area of measurement, for example, sensor or thermocouple systems.

Komise : IEC/SC 121A (Low-voltage switchgear and controlgear)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 31.07.2018
Zobraz více Zobraz méně
 

This International Standard applies to interfaces between low-voltage switchgear, controlgear, and controllers (e.g. programmable controllers, personal computers, etc.).

This document does not apply to higher level industrial communication networks that have become known as fieldbuses and are considered by IEC subcommittee 65C.

The purpose of this document is to harmonize and define rules, components and requirements of a general nature applicable to industrial CDIs. Those features of the various CDI standards which can be considered as general have therefore been brought together in this part of IEC 62026.

For each CDI, two main documents are necessary to determine all requirements and tests:

a)  this document, referred to as “IEC 62026-1” in the relevant CDI parts covering the various types of CDIs;

b)  the specific CDI part of the IEC 62026 series.

A specific CDI part may omit a general requirement if it is not applicable, or it may add to it if it is inadequate in the particular case, but it should not deviate from the requirement unless there is substantial technical justification.

NOTE Product-specific requirements for products incorporating a CDI are given in the relevant product standards. These requirements apply in addition to those given in this document.

Komise : IEC/SC 121A (Low-voltage switchgear and controlgear)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 14.08.2018
Zobraz více Zobraz méně
 

This document applies, when required by the relevant product standard, to low-voltage switchgear and controlgear hereinafter referred to as "equipment" or “device” and intended to be connected to circuits, the rated voltage of which does not exceed 1 000 V AC or 1 500 V DC.

This document states the general rules and common safety requirements for low-voltage switchgear and controlgear, including:

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information supplied with the equipment;

normal service, mounting and transport conditions, decommissioning and dismantling;

constructional and performance requirements;

verification of characteristics and performance;

energy efficiency aspects (see Annex V);

environmental aspects.

This document does not apply to:

low-voltage switchgear and controlgear assemblies which are dealt with in IEC 61439 series, as applicable;

aluminium terminals nor to terminals for connection of aluminium conductors;

use within explosive atmospheres (see IEC 60079 series);

software and firmware requirements for functional safety application (see IEC 61508-3);

cyber security aspects (see IEC 62443 series).