IEC 60364-6

SLOVENSKI SIST IEC 60364-6:2006

STANDARD
september 2006
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Low-voltage electrical installations - Part 6: Verification
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91.140.50
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NORME CEI
INTERNATIONALE
IEC
60364-6
INTERNATIONAL
Première édition
STANDARD
First edition
2006-02
Installations électriques à basse tension –
Partie 6:
Vérification
Low-voltage electrical installations –
Part 6:
Verification
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60364-6  IEC:2006 – 3 –
CONTENTS
FOREWORD.7
6.1 Scope.11
6.2 Normative references .11
6.3 Terms and definitions .13
61 Initial verification .13
61.1 General .13
61.2 Inspection .15
61.3 Testing .17
61.3.1 General.17
61.3.2 Continuity of conductors.17
61.3.3 Insulation resistance of the electrical installation.19
61.3.4 Protection by SELV, PELV or by electrical separation .19
61.3.5 Insulation resistance/impedance of floors and walls .21
61.3.6 Protection by automatic disconnection of the supply .21
61.3.7 Additional protection. .25
61.3.8 Polarity test.25
61.3.9 Check of phase sequence .27
61.3.10 Functional tests .27
61.3.11 Verification of voltage drop .27
61.4 Reporting for initial verification .27
62 Periodic verification .29
62.1 General .29
62.2 Frequency of periodic verification .31
62.3 Reporting for periodic verification .31

Annex A (informative)  Methods for measuring the insulation resistance/impedance of
floors and walls to earth or to the protective conductor .35
A.1 General .35
A.2 Test method for measuring the impedance of floors and walls with
a.c.voltage .35
A.3 Test electrode 1 .37
A.4 Test electrode 2 .39
Annex B (informative) Method B1, B2 and B3 .41
B.1 Method B1 – Measurement of earth electrode resistance.41
B.2 Method B2 – Measurement of the fault loop impedance.43
B.3 Method B3 – Measurement of earth loop resistance with current clamps .45
Annex C (informative) Guide on the application of the rules of clause 61: Initial
verification .47
Annex D (informative) Example of a diagram suitable for the evaluation of the voltage drop 53
Annex E (informative) Recommendation for electrical equipment, which is being re-
used in electrical installations .55
Annex F (informative)  Description of the installation for verification .57
Annex G (informative) Form for inspection of electrical installations (see examples in G.2).63
Annex I (informative) Correspondence between IEC 60364-6-61:2001 and

60364-6  IEC:2006 – 5 –
Bibliography.83

Figure A.1 – Test electrode 1.37
Figure A.2 – Test electrode 2.39
Figure B.1 – Measurement of earth electrode resistance.41
Figure B.2 – Measurement of fault loop impedance by voltage drop.43
Figure B.3 – Measurement of earth loop resistance with current clamps .45

Table 6A – Minimum values of insulation resistance .19
Table H.1 – Model form for cicuit details and test results schedule .77

60364-6  IEC:2006 – 7 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
LOW-VOLTAGE ELECTRICAL INSTALLATIONS –

Part 6: Verification
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
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governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
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4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
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between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60364-6 has been prepared by IEC technical committee 64:
Electrical installations and protection against electrical shock.
This first edition of IEC 60364-6 replaces the second edition if IEC 60364-6-61, published in
2001, and constitutes a technical revision.
The main changes with respect to IEC 60364-6-61 are listed below:
– extension of the scope to cover, in addition to initial verification, also periodic verification
of electrical installations;
– modification of verification requirements in the case of protection by automatic
disconnection of the supply;
– requirements for verification of conditions for additional protection;
– requirements for reporting upon completion of initial and periodic verification;

60364-6  IEC:2006 – 9 –
– information concerning the measurement of earth loop impedance with current clamps;
– information concerning the evaluation of voltage drop;
– recommendations for electrical equipment which is being re-used;
– model forms of schedules that might be used for the description and for initial and periodic
verification of electrical installations.
The text of this standard is based on the following documents:
FDIS Report on voting
64/1497/FDIS 64/1517/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.
IEC 60364 consists of the following parts, under the general title: Low-voltage electrical
installations:
Part 1: Fundamental principles, assessment of general characteristics, definitions
Part 4: Protection for safety
Part 5: Selection and erection of electrical equipment
Part 6: Verification
Part 7: Requirements for special installations or locations
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.
60364-6  IEC:2006 – 11 –
LOW-VOLTAGE ELECTRICAL INSTALLATIONS –

Part 6: Verification
6.1 Scope
This Part of IEC 60364 provides requirements for initial and periodic verification of an
electrical installation.
Clause 61 provides requirements for initial verification, by inspection and testing, of an
electrical installation to determine, as far as reasonably practicable, whether the requirements
of the other parts of IEC 60364 have been met and requirements for the reporting of the
results of the initial verification. The initial verification takes place upon completion of a new
installation or completion of additions or of alterations to existing installations.
Clause 62 provides requirements for periodic verification of an electrical installation to
determine, as far as reasonably practicable, whether the installation and all its constituent
equipment are in a satisfactory condition for use and requirements for the reporting of the
results of the periodic verification.
6.2 Normative references
The following referenced documents are indispensable for the application 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 (all parts), Low-voltage electrical installations
IEC 60364-4-41, Low-voltage electrical installations – Part 4-41: Protection for safety –
Protection against electric shock
IEC 60364-4-42, Electrical installations of buildings – Part 4-42: Protection for safety –
Protection against thermal effects
IEC 60364-4-43, Electrical installations of buildings – Part 4-43: Protection for safety –
Protection against overcurrent
IEC 60364-5-51, Electrical insta
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