Low-voltage electrical installations - Part 5-53: Selection and erection of electrical equipment - Devices for protection, isolation, switching, control and monitoring - Clause 537: Isolation and switching

This part of HD 60364 deals with general requirements for isolation and switching and with the requirements for selection and erection of the devices provided to fulfil such functions.

Errichten von Niederspannungsanlagen - Teil 5-53: Auswahl und Errichtung elektrischer Betriebsmittel - Schaltgeräte und Steuergeräte - Abschnitt 537: Geräte zum Trennen und Schalten

Installations électriques basse tension - Partie 5-53: Choix et mise en œuvre des matériels - Appareillage - Article 537: Sectionnement et coupure

Nizkonapetostne električne inštalacije - 5-53. del: Izbira in namestitev električne opreme - Stikalne in krmilne naprave - 537. oddelek: Ločevanje in stikanje

Ta del standarda HD 60364 obravnava splošne zahteve za ločevanje in stikanje ter zahteve za izbiro in namestitev naprav, ki te funkcije opravljajo.

General Information

Status
Published
Publication Date
10-Nov-2016
Current Stage
6060 - Document made available
Due Date
03-Apr-2017

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SLOVENSKI STANDARD
SIST HD 60364-5-537:2017
01-januar-2017
1DGRPHãþD
SIST HD 384.5.537 S2:2002

1L]NRQDSHWRVWQHHOHNWULþQHLQãWDODFLMHGHO,]ELUDLQQDPHVWLWHYHOHNWULþQH

RSUHPH6WLNDOQHLQNUPLOQHQDSUDYHRGGHOHN/RþHYDQMHLQVWLNDQMH

Low voltage electrical installations - Part 5-53: Selection and erection of electrical

equipment - Switchgear and controlgear - Clause 537: Isolation and switching

Errichten von Niederspannungsanlagen - Teil 5: Auswahl und Errichtung elektrischer

Betriebsmittel - Kapitel 53: Schaltgeräte und Steuergeräte - Abschnitt 537: Geräte zum

Trennen und Schalten

Installations électriques basse tension - Partie 5-53: Choix et mise en œuvre des

matériels - Appareillage - Article 537: Sectionnement et coupure
Ta slovenski standard je istoveten z: HD 60364-5-537:2016
ICS:
29.130.01 Stikalne in krmilne naprave Switchgear and controlgear
na splošno in general
91.140.50 Sistemi za oskrbo z elektriko Electricity supply systems
SIST HD 60364-5-537:2017 en,fr

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST HD 60364-5-537:2017
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SIST HD 60364-5-537:2017
HARMONIZATION DOCUMENT HD 60364-5-537
DOCUMENT D'HARMONISATION
HARMONISIERUNGSDOKUMENT
November 2016
ICS 29.120.50; 91.140.50 Supersedes HD 384.5.537 S2:1998
English Version
Low-voltage electrical installations -
Part 5-53: Selection and erection of electrical equipment -
Devices for protection, isolation, switching, control and
monitoring - Clause 537: Isolation and switching

Installations électriques basse tension - Errichten von Niederspannungsanlagen -

Partie 5-53: Choix et mise en œuvre des matériels - Teil 5-53: Auswahl und Errichtung elektrischer

Appareillage - Article 537: Sectionnement et coupure Betriebsmittel - Schaltgeräte und Steuergeräte -

Abschnitt 537: Geräte zum Trennen und Schalten

This Harmonization Document was approved by CENELEC on 2016-07-04. CENELEC members are bound to comply with the

CEN/CENELEC Internal Regulations which stipulate the conditions for implementation of this Harmonization Document at national level.

Up-to-date lists and bibliographical references concerning such national implementations may be obtained on application to the CEN-

CENELEC Management Centre or to any CENELEC member.

This Harmonization Document exists in three official versions (English, French, German).

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,

Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2016 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. HD 60364-5-537:2016 E
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SIST HD 60364-5-537:2017
HD 60364-5-537:2016 (E)
Contents Page

European foreword ...................................................................................................................................3

537 Devices for isolation and switching ...................................................................................................4

537.0 Introduction .............................................................................................................................4

537.0.1 Scope .........................................................................................................................4

537.0.2 Normative references ................................................................................................4

537.1 General ...................................................................................................................................6

537.2 Devices for isolation ................................................................................................................6

537.3 Devices for switching ..............................................................................................................7

537.3.1 Functional switching and control devices ..................................................................7

537.3.2 Switching-off devices for mechanical maintenance ...................................................7

537.3.3 Devices for emergency switching off .........................................................................8

537.4 Firefighter’s switches...............................................................................................................8

Annex A (normative) Devices for isolation and switching .......................................................................9

Annex B (informative) Firefighter’s switches ....................................................................................... 11

Annex C (normative) Special national conditions ................................................................................ 12

Annex D (informative) A-deviations ..................................................................................................... 16

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SIST HD 60364-5-537:2017
HD 60364-5-537:2016 (E)
European foreword

This document (HD 60364-5-537:2016) was prepared by CLC/TC 64 “Electrical installations and

protection against electric shock”.
The following dates are fixed:
— latest date by which the document has to be implemented (dop) 2017-05-11
at national level by publication of an identical national
standard or by endorsement
— latest date by which the national standards conflicting with (dow) 2019-11-11
the document have to be withdrawn
This document supersedes HD 384.5.537 S2:1998.

HD 60364-5-537:2016 includes the following significant technical changes with respect to the previous

edition: the contents of this document has been adapted to give requirements on implementation of

the measures provided in HD 60364-4-46:2016 and requirements for proper functioning, in terms of

selection and erection of electrical equipment for isolation and switching. Another significant technical

change is the introduction of Annex A.

NOTE Complementarily, the text of HD 60364-4-46:2016 has been revised so that it only includes general

requirements on measures for isolation and switching to provide for the safety of persons, livestock and property.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such

patent rights.
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SIST HD 60364-5-537:2017
HD 60364-5-537:2016 (E)
537 Devices for isolation and switching
537.0 Introduction
537.0.1 Scope

This part of HD 60364 deals with general requirements for isolation and switching and with the

requirements for selection and erection of the devices provided to fulfil such functions.

537.0.2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are

indispensable for its application. For dated references, only the edition cited applies. For undated

references, the latest edition of the referenced document (including any amendments) applies.

EN 60269 / HD 60269 / CLC/TR 60269 series, Low-voltage fuses (IEC 60269 series)

EN 60309 (series), Plugs, socket-outlets and couplers for industrial purposes (IEC 60309 series)

EN 60669-1, Switches for household and similar fixed-electrical installations – Part 1: General

requirements (IEC 60669-1)

EN 60669-2-1, Switches for household and similar fixed electrical installations – Part 2-1: Particular

requirements – Electronic switches (IEC 60669-2-1)

EN 60669-2-2, Switches for household and similar fixed electrical installations – Part 2-2: Particular

requirements – Electromagnetic remote-control switches (RCS) (IEC 60669-2-2)

EN 60669-2-3, Switches for household and similar fixed electrical installations – Part 2-3: Particular

requirements – Time delay switches (TDS) (IEC 60669-2-3)

EN 60669-2-4, Switches for household and similar fixed electrical installations – Part 2-4: Particular

requirements – Isolating switches (IEC 60669-2-4)

EN 60669-2-5, Switches for household and similar fixed electrical installations – Part 2-5: Particular

requirements – Switches and related accessories for use in home and building electronic systems

(HBES) (IEC 60669-2-5)

EN 60669-2-6, Switches for household and similar fixed electrical installations – Part 2-6: Particular

requirements – Fireman's switches for exterior and interior signs and luminaires (IEC 60669-2-6)

EN 60898-1, Electrical accessories – Circuit breakers for overcurrent protection for household and

similar installations – Part 1: Circuit-breakers for a.c. operation (IEC 60898-1)

EN 60898-2, Electrical accessories – Circuit breakers for overcurrent protection for household and

similar installations – Part 2: Circuit-breakers for a.c. and d.c. operation (IEC 60898-2)

EN 60947-2, Low-voltage switchgear and controlgear – Part 2: Circuit-breakers (IEC 60947-2)

EN 60947-3, Low-voltage switchgear and controlgear – Part 3: Switches, disconnectors, switch-

disconnectors and fuse-combination units (IEC 60947-3)

EN 60947-4-1, Low-voltage switchgear and controlgear – Part 4-1: Contactors and motor-starters –

Electromechanical contactors and motor-starters (IEC 60947-4-1)

EN 60947-4-2, Low-voltage switchgear and controlgear – Part 4-2: Contactors and motor-starters –

AC semiconductor motor controllers and starters (IEC 60947-4-2)
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SIST HD 60364-5-537:2017
HD 60364-5-537:2016 (E)

EN 60947-4-3, Low-voltage switchgear and controlgear – Part 4-3: Contactors and motor-starters –

AC semiconductor controllers and contactors for non-motor loads (IEC 60947-4-3)

EN 60947-5-1, Low-voltage switchgear and controlgear – Part 5-1: Control circuit devices and

switching elements – Electromechanical control circuit devices (IEC 60947-5-1)

EN 60947-6-1, Low-voltage switchgear and controlgear – Part 6-1: Multiple function equipment –

Transfer switching equipment (IEC 60947-6-1)

EN 60947-6-2, Low-voltage switchgear and controlgear – Part 6-2: Multiple function equipment –

Control and protective switching devices (or equipment) (CPS) (IEC 60947-6-2)

EN 60947-7-1, Low-voltage switchgear and controlgear – Part 7-1: Ancillary equipment – Terminal

blocks for copper conductors (IEC 60947-7-1)

EN 61008-2-1, Residual current operated circuit-breakers without integral overcurrent protection for

household and similar uses (RCCB's) – Part 2-1: Applicability of the general rules to RCCB's

functionally independent of line voltage (IEC 61008-2-1)

EN 61009-2-1, Residual current operated circuit-breakers with integral overcurrent protection for

household and similar uses (RCBO's) – Part 2-1: Applicability of the general rules to RCBO's

functionally independent of line voltage (IEC 61009-2-1)

EN 61095, Electromechanical contactors for household and similar purposes (IEC 61095)

EN 61984:2009, Connectors – Safety requirements and tests (IEC 61984:2008)

EN 61995 (series), Devices for the connection of luminaires for household and similar purposes

(IEC 61995 series)

EN 62423, Type F and type B residual current operated circuit-breakers with and without integral

overcurrent protection for household and similar uses (IEC 62423)
EN 62606, General requirements for arc fault detection devices (IEC 62606)

EN 62626-1, Low-voltage switchgear and controlgear enclosed equipment – Part 1: Enclosed switch-

disconnectors outside the scope of IEC 60947-3 to provide isolation during repair and maintenance

work (IEC 62626-1)

HD 60364-4-46:2016, Low-voltage electrical installations – Part 4-46: Protection for safety – Isolation

and switching
IEC 60417, Graphical symbols for use on equipment
IEC 60884 (series), Plugs and socket-outlets for household and similar purposes

IEC 60906 (series), IEC system of plugs and socket-outlets for household and similar purposes

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SIST HD 60364-5-537:2017
HD 60364-5-537:2016 (E)
537.1 General

537.1.1 Any device for isolation and switching according to Clauses 462 to 465 of

HD 60364-4-46:2016 shall comply with the relevant requirements included in this clause.

In certain instances, additional requirements may be necessary for combined functions.

NOTE 1 Table A.1 summarizes the functions provided by the devices for isolation and switching, together with

indication of the relevant product standards.

NOTE 2 For some applications such as motor control, the switching device needs to withstand the inrush

current.

537.1.2 Where an installation or an item of equipment or enclosure contains live parts connected to

more than one supply, a durable warning notice shall be placed in such a position that any person

before gaining access to live parts, will be warned of the need to isolate those parts from the various

supplies unless an interlocking arrangement is provided to ensure that all the circuits concerned are

isolated.

537.1.3 Plugs and socket-outlets, connectors and devices for connection of luminaires may be used

for providing the isolation and switching functions in accordance with Annex A.

The isolation and switching functions are provided by the disconnection of the plug from the outlet or

connector from the inlet as applicable.
537.2 Devices for isolation

537.2.1 Devices for isolation shall be devices for which the isolation function is explicitly recognized

by the relevant product standard.

The devices providing isolation function shall be selected in accordance with Annex A.

537.2.2 Semiconductor devices shall not be used as isolating devices.

537.2.3 Devices suitable for isolation shall be selected according to the requirements that are based

on the overvoltage categories applicable at their point of installation.

Devices for isolation shall be designed for over voltage category III or IV except the plug of a plug and

socket-outlet combination identified in Table A.1 as suitable for isolation.
NOTE Examples of overvoltage categories for devices are given in HD 60364–4-443.
Devices used for isolation shall comply with 537.2.4 to 537.2.8.

537.2.4 Devices for isolation shall be selected and/or installed so as to prevent unwanted or

unintentional closure (see HD 60364-4-46:2016, 462.3).

This may be achieved by locating the device in a lockable space or lockable enclosure or by

padlocking or by other suitable means.

537.2.5 Provision shall be made for securing off-load isolating devices against unwanted or

unintentional opening.

This may be achieved, for example, by locating the device in a lockable space or lockable enclosure

or by padlocking. Alternatively, the off-load device may be interlocked with a load-breaking one.

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SIST HD 60364-5-537:2017
HD 60364-5-537:2016 (E)

537.2.6 Means of isolation shall preferably be provided by a multipole switching device which

disconnects all applicable poles of the relevant supply but single-pole devices situated adjacent to

each other are not excluded, subject to the provisions of HD 60364-4-46:2016, 461.2.

537.2.7 Each device used for isolation shall be clearly identified by position or durable marking to

indicate the installation or circuit it isolates.

537.2.8 Where a link is inserted in the neutral conductor for isolating purposes, the link shall comply

with the following requirements:
– it cannot be removed without the use of a tool; and
– it is accessible to skilled persons only.
537.3 Devices for switching
537.3.1 Functional switching and control devices

537.3.1.1 The devices for functional switching and control shall be selected in accordance with

Annex A.

537.3.1.2 Functional switching devices shall be suitable for the most onerous duty they are intended

to perform. The characteristic of the load to be switched shall be considered (e.g. utilization category).

537.3.1.3 Functional switching devices may control the current without necessarily opening the

corresponding poles.

NOTE Semiconductor switching devices and some control auxiliaries are examples of devices capable of

interrupting the current in the circuit but not opening the corresponding poles.
537.3.2 Switching-off devices fo
...

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