Amendment 1 - Low-voltage electrical installations - Part 7-706: Requirements for special installations or locations - Conducting locations with restricted movement

Amendement 1 - Installations électriques basse tension - Partie 7-706: Exigences pour les installations ou emplacements spéciaux - Enceintes conductrices exigües

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Status
Published
Publication Date
25-Sep-2019
Current Stage
PPUB - Publication issued
Completion Date
26-Sep-2019
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IEC 60364-7-706:2005/AMD1:2019 - Amendment 1 - Low-voltage electrical installations - Part 7-706: Requirements for special installations or locations - Conducting locations with restricted movement
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IEC 60364-7-706
Edition 2.0 2019-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
A MENDMENT 1
AM ENDEMENT 1
Low-voltage electrical installations –
Part 7-706: Requirements for special installations or locations – Conducting
locations with restricted movement
Installations électriques basse tension –
Partie 7-706: Exigences pour les installations ou emplacements spéciaux –
Enceintes conductrices exiguës
IEC 60364-7-706:2005-10/AMD1:2019-09(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 60364-7-706
Edition 2.0 2019-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
A MENDMENT 1
AM ENDEMENT 1
Low-voltage electrical installations –
Part 7-706: Requirements for special installations or locations – Conducting
locations with restricted movement
Installations électriques basse tension –
Partie 7-706: Exigences pour les installations ou emplacements spéciaux –
Enceintes conductrices exiguës
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 91.140.50; 29.020 ISBN 978-2-8322-7333-3

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – IEC 60364-7-706:2005/AMD1:2019
© IEC 2019
FOREWORD

This amendment has been prepared by IEC technical committee 64: Electrical installations

and protection against electric shock.
The text of this amendment is based on the following documents:
FDIS Report on voting
64/2380/FDIS 64/2394/RVD

Full information on the voting for the approval of this amendment can be found in the report

on voting indicated in the above table.

The committee has decided that the contents of this amendment and the base publication will

remain unchanged until the stability date indicated on the IEC website 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.
___________
FOREWORD
Add the following new text:

The reader's attention is drawn to the fact that Annex A lists all of the “in-some-country”

clauses on differing practices of a permanent or less permanent nature relating to the subject

of this standard.
INTRODUCTION
Replace the existing text with the following new text:

For the purpose of this part of IEC 60364 (IEC 60364-7-706) the requirements of the general

Parts 1 to 6 and Parts 8 of IEC 60364 apply.

The IEC 60364-7-7XX parts of IEC 60364 contain particular requirements for special

installations or locations which are based on the requirements of the general parts of

IEC 60364 (IEC 60364-1 to IEC 60364-6 and IEC 60364-8). These IEC 60364-7-7XX parts are

considered in conjunction with the requirements of the general parts.
---------------------- Page: 4 ----------------------
IEC 60364-7-706:2005/AMD1:2019 – 3 –
© IEC 2019

The particular requirements of this part of IEC 60364 supplement, modify or replace certain of

the requirements of the general parts of IEC 60364 being valid at the time of publication of

this part. The absence of reference to the exclusion of a part or a clause of a general part

means that the corresponding clauses of the general part are applicable (undated reference).

Requirements of other 7XX parts being relevant for installations covered by this part also

apply. This part may therefore also supplement, modify or replace certain of these

requirements valid at the time of publication of this part.

The clause numbering of this part follows the pattern and corresponding references of

IEC 60364. The numbers following the particular number of this part are those of the

corresponding parts, or clauses of the other parts of the IEC 60364 series, valid at the time of

publication of this part, as indicated in the normative references of this document (dated

reference).

If requirements or explanations additional to those of the other parts of the IEC 60364 series

are needed, the numbering of such items appears as 706.101, 706.102, 706.103, etc.

In the case where new or amended general parts with modified numbering were published

after this part was issued, the clause numbers referring to a general part in this Part 706 may

no longer align with the latest edition of the general part. Dated references should be

observed.
706.1 Scope
Replace the existing text with the following new text:
The particular requirements of this part of IEC 60364 apply to:
• fixed equipment within conducting locations with restricted movement; and

• supplies to equipment used within conducting locations with restricted movement.

Add, after the Scope, the following new Subclauses 706.2 and 706.3:
706.2 Normative references

The following documents are referred to in the text in such a way that some or all of their

content constitutes requirements of this document. For dated references, only the edition

cited applies. For undated references, the latest edition of the referenced document (including

any amendments) applies.

IEC 60364-4-41:2005, Low-voltage electrical installations – Part 4-41: Protection for safety –

Protection against electric shock
IEC 60364-4-41:2005/AMD1:2017
706.3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following

addresses:
---------------------- Page: 5 ----------------------
– 4 – IEC 60364-7-706:2005/AMD1:2019
© IEC 2019
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
706.3.1
conducting location with restricted movement

location surrounded by mainly extraneous-conductive-parts and where contact through one or

more points on a person’s body with the extraneous-conductive-parts is likely and where there

is limited possibility of interrupting this contact
706.410.3 Application of measures of protection against electric shock

Replace the existing title of 706.410.3 and add the following headers of 706.4 and 706.41 as

follows:
706.4 Protection for safety
706.41 Protection against electric shock
706.410.3 General requirements
Add, at the end of existing Subclause 706.410.3.1.6, the following new text:
706.410.3.3
Replace the existing text with the following:

For the supply to mobile equipment, one of the following protective measures shall be applied:

• SELV in accordance with IEC 60364-4-41:2005, Clause 414, or

• electrical separation for the supply of one item of current using equipment in accordance

with IEC 60364-4-41:2005, Clause 413.
NOTE An isolating transformer can have several secondary windings.

For the supply to fixed equipment, one of the following protective measures shall be applied:

• automatic disconnection of the supply in accordance with IEC 60364-4-41:2005 and

IEC 60364-4-41:2005/AMD1:2017, Clause 411 together with additional protection by
supplementary equipotential bonding in accordance with IEC 60364-4-41:2005 and
IEC 60364-4-41:2005/AMD1:2017, 415.2, or
• SELV in accordance with IEC 60364-4-41:2005, Clause 414, or

• PELV in accordance with IEC 60364-4-41:2005, Clause 414, together with equipotential

bonding between all exposed-conductive-parts and extraneous-conductive-parts and the

connection of the PELV system to earth, or

• electrical separation for the supply of one item of current using equipment in accordance

with IEC 60364-4-41:2005, Clause 413, or

• double or reinforced insulation in accordance with IEC 60364-4-41:2005 and IEC 60364-4-

41:2005/AMD1:2017, Clause 412 together with additional protection by the use of a

residual current device (RCD) with a rated residual operating current not exceeding

30 mA.
706.410.3.5
Replace the requirement with the following:
The protective measures of obstacles and placing out of reach in accordance with
IEC 60364-4-41:2005, Annex B shall not be used.
---------------------- Page: 6 ----------------------
IEC 60364-7-706:2005/AMD1:2019 – 5 –
© IEC 2019
706.413 Protection against indirect contact
Replace the existing title of 706.413 with the following new title:
706.413 Protective measure: electrical separation
706.413.1.2.3 Equipotential bonding and functional earth
Add, at the end of existing Subclause 706.413.1.2.3, the following new text:
706.413.3 Requirements for fault protection
706.413.3.2
Add the following requirement:

The source shall be situated outside the conducting location with restricted movement, unless

the source is part of the fixed installation within the location.

Add, at the end of existing Subclause 706.413.5.1.1, the new Subclauses 706.414, 706.415

and Annex A as follows:
706.414 Protective measure: extra-low-voltage provided by SELV and PELV
706.414.3 Sources for SELV and PELV
The following requirements are added:

706.414.3.101 Sources for SELV and PELV shall be situated outside the conducting location

with restricted movement, unless they are part of the fixed installation within the conducting

location with restricted movement.
706.414.4 Requirements for SELV and PELV circuits
706.414.4.5
Replace the first paragraph and first two dashed items with the following:

If the nominal voltage exceeds 25 V AC or 60 V DC, or if the equipment is immersed, basic

protection shall be provided for SELV and PELV circuits by:
• insulation in accordance with IEC 60634-4-41:2005, Clause A.1, or
• barriers or enclosures in accordance with IEC 60634-4-41:2005, Clause A.2.
706.415 Additional protection
706.415.2 Additional protection: supplementary protective equipotential bonding
706.415.2.1
The following requirement is added:

Where functional earthing is required, supplementary equipotential bonding shall be provided

between all exposed-conductive-parts, extraneous-
...

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