IEC 60364-7-729:2007

Low-voltage electrical installations - Part 7-729: Requirements for special installations or locations - Operating or maintenance gangways

The requirements of this part of IEC 60364 apply to basic protection and other aspects in restricted access areas with switchgear and controlgear assemblies, including requirements for operating or maintenance gangways.

Installations électriques à basse tension - Partie 7-729: Règles pour les installations et emplacements spéciaux - Passages d'entretien ou de service

Les exigences de la présente partie de la CEI 60364 sont applicables à la protection de base contre les contacts directs et autres aspects analogues pour des zones d'accès limité comportant de l'appareillage, y compris les passages d'entretien ou de service.

General Information

• Status: Published
• Publication Date: 15-Jul-2007
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 91.140.50 - Electricity supply systems
• Technical Committee: TC 64 - Electrical installations and protection against electric shock
• Drafting Committee: MT 3 - TC 64/MT 3
• Current Stage: PPUB - Publication issued
• Start Date: 15-Sep-2007
• Completion Date: 16-Jul-2007

Standards Content (Sample)

INTERNATIONAL IEC
STANDARD
CEI
60364-7-729
NORME
First edition
INTERNATIONALE
Première édition
2007-07
Low-voltage electrical installations –
Part 7-729:
Requirements for special
installations or locations –
Operating or maintenance gangways

Installations électriques à basse tension –
Partie 7-729:
Règles pour les installations
et emplacements spéciaux –
Passages d’entretien ou de service
Reference number
Numéro de référence
IEC/CEI 60364-7-729:2007
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INTERNATIONAL IEC
STANDARD
CEI
60364-7-729
NORME
First edition
INTERNATIONALE
Première édition
2007-07
Low-voltage electrical installations –
Part 7-729:
Requirements for special
installations or locations –
Operating or maintenance gangways

Installations électriques à basse tension –
Partie 7-729:
Règles pour les installations
et emplacements spéciaux –
Passages d’entretien ou de service
PRICE CODE
P
CODE PRIX
Commission Electrotechnique Internationale
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
For price, see current catalogue
Pour prix, voir catalogue en vigueur

– 2 – 60364-7-729 © IEC:2007
CONTENTS
FOREWORD.3
729.0 Introduction.5

729.1 Scope.6
729.2 Normative references.6
729.30 Assessment of general characteristics.6
729.513 Accessibility .8

Annex A (normative) Additional requirements for closed restricted access areas .12
Annex B (informative) List of notes concerning particular conditions in certain
countries.14
Annex C (informative) Additional information for closed restricted access areas .16

Figure 729.1 – Gangways in installations with live parts on one side.7
Figure 729.2 – Gangways in installations with live parts on both sides.8
Figure 729.3 – Gangways in installations where the protective measure of barriers or
enclosures applies .9
Figure 729.4 – Gangways in installations where the protective measure of obstacles
applies.10
Figure 729.5 – Examples of positioning of doors in long closed restricted access areas.11
Figure 729 A.1 – Minimum passing width in case of evacuation – Case 1 .12
Figure 729 A.2 – Minimum passing width in case of evacuation – Case 2 .13
Figure 729 A.3 – Minimum passing width in case of evacuation – Case 3 .13

60364-7-729 © IEC:2007 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
LOW-VOLTAGE ELECTRICAL INSTALLATIONS –

Part 7-729: Requirements for special installations or locations –
Operating or maintenance gangways

FOREWORD
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9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
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International Standard IEC 60364-7-729 has been prepared by IEC technical committee 64:
Electrical installations and protection against electric shock.
The text of this standard is based on the following documents:
FDIS Report on voting
64/1595/FDIS 64/1603/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

– 4 – 60364-7-729 © IEC:2007
The reader’s attention is drawn to the fact that Annex B lists all of the “in-some-country”
clauses on differing practices of a less permanent nature relating to the subject of this
standard.
A list of all the parts in the IEC 60364 series, under the general title Low-voltage electrical
installations, can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in
the data related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
60364-7-729 © IEC:2007 – 5 –
729.0 Introduction
The requirements of this part of IEC 60364 supplement, modify or replace certain of the
general requirements of the other parts of IEC 60364.
The clause numbering of Part 7-729 follows the pattern and corresponding references of
IEC 60364. The numbers following the particular number of Part 7-729 are those of the
corresponding parts or clauses of IEC 60364.
The absence of reference to a part, clause or subclause means that the corresponding
general requirements are applicable.
For operating and maintenance gangways measures of protection against direct contact is
covered by this section which replaces clause 481.2.4 of IEC 60364-4-481 – Measures of
protection against direct contact.

– 6 – 60364-7-729 © IEC:2007
LOW-VOLTAGE ELECTRICAL INSTALLATIONS –

Part 7-729: Requirements for special installations or locations –
Operating or maintenance gangways

729.1 Scope
The requirements of this part of IEC 60364 apply to basic protection and other aspects in
restricted access areas with switchgear and controlgear assemblies, including requirements
for operating or maintenance gangways.
729.2 Normative references
The following normative documents contain provisions which through reference in this text,
constitute provisions of this part of IEC 60364. For dated references, subsequent
amendments to, or revisions of any of these publications do not apply.
IEC 60364-1:2005, Low-voltage electrical installations – Part 1: Fundamental principles,
assessment of general characteristics, definitions
IEC 60364-4-41, Low-voltage electrical installations – Part 4-41: Protection for safety –
Protection against electric shock
729.30 Assessment of general characteristics
Add the following requirements:
For restricted access areas the following apply:
− restricted access areas shall be clearly and visibly marked by appropriate signs;
− unauthorized persons shall not have access to restricted access areas;
− door(s) provided for closed restricted access areas shall allow easy evacuation to the
outside by opening without the use of a key, tool or any other device which is not part of
the opening mechanism.
729.410.3.7
Replace the paragraph with the following requirements:
In restricted access areas where it is not reasonably practicable to provide protective
measures for basic protection (protection against direct contact) in accordance with IEC
60364-4-41, minimum distances are required.
NOTE 1 See Clause 30 of IEC 60364-1 for assessment of general characteristics when deciding to use this
method of protection.
NOTE 2 In cases of protective devices with high ratings, such as a large circuit-breaker, greater distances may
be necessary to permit withdrawal of the device.
...