EN 60947-3:1999/A2:2005
(Amendment)Low-voltage switchgear and controlgear - Part 3: Switches, disconnectors, switch-disconnectors and fuse-combination units
Low-voltage switchgear and controlgear - Part 3: Switches, disconnectors, switch-disconnectors and fuse-combination units
Superseded by EN 60947-3:2009
Niederspannungsschaltgeräte - Teil 3: Lastschalter, Trennschalter, Lasttrennschalter und Schalter-Sicherungs-Einheiten
Appareillage à basse tension - Partie 3: Interrupteurs, sectionneurs, interrupteurs-sectionneurs et combinés-fusibles
Nizkonapetostne stikalne naprave - 3. del: Stikala, ločilniki, ločilna stikala in stikalni aparati z varovalkami (IEC 60947-3:1999/A2:2005)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-januar-2006
1L]NRQDSHWRVWQHVWLNDOQHQDSUDYHGHO 6WLNDODORþLOQLNLORþLOQDVWLNDODLQ
VWLNDOQLDSDUDWL]YDURYDONDPL ,(& $
Low-voltage switchgear and controlgear -- Part 3: Switches, disconnectors, switch-
disconnectors and fuse-combination units
Niederspannungsschaltgeräte -- Teil 3: Lastschalter, Trennschalter, Lasttrennschalter
und Schalter-Sicherungs-Einheiten
Appareillage à basse tension -- Partie 3: Interrupteurs, sectionneurs, interrupteurs-
sectionneurs et combinés-fusibles
Ta slovenski standard je istoveten z: EN 60947-3:1999/A2:2005
ICS:
29.130.20 Nizkonapetostne stikalne in Low voltage switchgear and
krmilne naprave controlgear
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN 60947-3/A2
NORME EUROPÉENNE
EUROPÄISCHE NORM August 2005
ICS 29.120.40; 29.130.20
English version
Low-voltage switchgear and controlgear
Part 3: Switches, disconnectors, switch-disconnectors
and fuse-combination units
(IEC 60947-3:1999/A2:2005)
Appareillage à basse tension Niederspannungsschaltgeräte
Partie 3: Interrupteurs, sectionneurs, Teil 3: Lastschalter, Trennschalter,
interrupteurs-sectionneurs et Lasttrennschalter und
combinés-fusibles Schalter-Sicherungs-Einheiten
(CEI 60947-3:1999/A2:2005) (IEC 60947-3:1999/A2:2005)
This amendment A2 modifies the European Standard EN 60947-3:1999; it was approved by CENELEC
on 2005-06-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this amendment the status of a national standard without any
alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.
This amendment exists in three official versions (English, French, German). A version in any other language
made by translation under the responsibility of a CENELEC member into its own language and notified to the
Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden,
Switzerland and United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2005 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60947-3:1999/A2:2005 E
Foreword
The text of document 17B/1402/FDIS, future amendment 2 to IEC 60947-3:1999, prepared by
SC 17B, Low-voltage switchgear and controlgear, of IEC TC 17, Switchgear and controlgear, was
submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as amendment A2 to
EN 60947-3:1999 on 2005-06-01.
The following dates were fixed:
– latest date by which the amendment has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2006-03-01
– latest date by which the national standards conflicting
with the amendment have to be withdrawn (dow) 2008-06-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of amendment 2:2005 to the International Standard IEC 60947-3:1999 was approved by
CENELEC as an amendment to the European Standard without any modification.
__________
- 3 - EN 60947-3:1999/A2:2005
Replace annex ZA by:
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
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.
NOTE Where an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
IEC 60050-441 1984 International Electrotechnical - -
Vocabulary (IEV)
Chapter 441: Switchgear, controlgear
and fuses
A1 2000 - -
IEC 60269 Series Low-voltage fuses EN 60269 Series
IEC 60410 1973 Sampling plans and procedures for - -
inspection by attributes
IEC 60417 database Graphical symbols for use on - -
equipment
IEC 60447 2004 Basic and safety principles for man- EN 60447 2004
machine interface, marking and
identification - Actuating principles
IEC 60617 database Graphical symbols for diagrams - -
IEC 60947-1 2004 Low-voltage switchgear and EN 60947-1 2004
controlgear + corr. November 2004
Part 1: General rules
IEC 60947-2 2003 Part 2: Circuit-breakers EN 60947-2 2003
IEC 60947-4-1 2000 Part 4-1: Contactors and motor- EN 60947-4-1 2001
starters - Electromechanical
contactors and motor-starters
A1 2002 A1 2002
IEC 60947-5-1 2003 Part 5-1: Control circuit devices and EN 60947-5-1 2004
switching elements - + corr. July 2005
Electromechanical control circuit
devices
IEC 61000-4-2 1995 Electromagnetic compatibility (EMC) EN 61000-4-2 1995
Part 4-2: Testing and measurement
techniques - Electrostatic discharge
immunity test
A1 1998 A1 1998
A2 2000 A2 2001
Publication Year Title EN/HD Year
IEC 61000-4-3 2002 Part 4-3: Testing and measurement EN 61000-4-3 2002
techniques - Radiated, radio-
frequency, electromagnetic field
immunity test
A1 2002 A1 2002
IEC 61000-4-4 2004 Part 4-4: Testing and measurement EN 61000-4-4 2004
techniques - Electrical fast
transient/burst immunity test
IEC 61000-4-5 1995 Part 4-5: Testing and measurement EN 61000-4-5 1995
techniques - Surge immunity test
A1 2000 A1 2001
IEC 61000-4-6 2003 Part 4-6: Testing and measurement - -
techniques - Immunity to conducted
disturbances, induced by radio-
frequency fields
CISPR 11 2003 Industrial scientific and medical (ISM) - -
radio-frequency equipment -
Electromagnetic disturbance
characteristics - Limits and methods of
measurement
CISPR 22 2003 Information technology equipment - - -
Radio disturbance characteristics -
Limits and methods of measurement
NORME CEI
INTERNATIONALE IEC
60947-3
INTERNATIONAL
STANDARD
AMENDEMENT 2
AMENDMENT 2
2005-04
Amendement 2
Appareillage à basse tension –
Partie 3:
Interrupteurs, sectionneurs, interrupteurs-
sectionneurs et combinés-fusibles
Amendment 2
Low-voltage switchgear and controlgear –
Part 3:
Switches, disconnectors, switch-disconnectors
and fuse-combination units
IEC 2005 Droits de reproduction réservés Copyright - all rights reserved
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch
CODE PRIX
Commission Electrotechnique Internationale N
PRICE CODE
International Electrotechnical Commission
Международная Электротехническая Комиссия
Pour prix, voir catalogue en vigueur
For price, see current catalogue
60947-3 Amend. 2 IEC:2005 – 3 –
FOREWORD
This amendment has been prepared by subcommittee 17B: Low-voltage switchgear and
controlgear, of IEC technical committee 17: Switchgear and controlgear.
The text of this amendment is based on the following documents:
FDIS Report on voting
17B/1402/FDIS 17B/1410/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 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.
_______________
Page 3
CONTENTS
Add the following:
Annex C (normative) Single pole operated three pole switches .
Table 12 – Temperature-rise limits for terminals and accessible parts .
Page 11
1.1 Scope and object
Insert, after the third paragraph, the following new paragraph:
The requirements for single pole operated three pole switches are included in Annex C.
60947-3 Amend. 2 IEC:2005 – 5 –
Page 13 and, in amendment 1, page 3
1.2 Normative references
Replace the text of the first paragraph by the following:
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.
Add, after IEC 60050(441):1984, the following reference:
Amendment 1 (2000)
Insert, after IEC 60050(441), the following new reference:
IEC 60269 (all parts), Low-voltage fuses
Replace the reference to IEC 60417-2:1998 by the following:
IEC 60417-DB:2002 , Graphical symbols for use on equipment
Replace the reference to IEC 60447:1993 by the following:
IEC 60447:2004, Basic and safety principles for man-machine interface, marking and
identification − Actuating principles
Replace the reference to IEC 60617-7:1996 by the following:
IEC 60617-DB:2001 , Graphical symbols for diagrams
Replace the reference to IEC 60947-1:1999 by the following:
IEC 60947-1:2004, Low-voltage switchgear and controlgear – Part 1: General rules
Replace the reference to IEC 60947-2:1995 by the following:
IEC 60947-2:2003, Low-voltage switchgear and controlgear – Part 2: Circuit-breakers
Replace the reference to IEC 60947-4-1:1990 by the following:
IEC 60947-4-1:2000, Low-voltage switchgear and controlgear – Part 4-1: Contactors and
motor-starters – Electromechanical contactors and motor-starters
Amendment 1 (2002)
Replace the reference to IEC 60947-5-1:1997 by the following:
IEC 60947-5-1:2003, Low-voltage switchgear and controlgear – Part 5-1: Control circuit
devices and switching elements – Electromechanical control circuit devices
Add, after IEC 61000-4-2:1995, the following references:
Amendment 1 (1998)
Amendment 2 (2000)
___________
“DB” refers to the IEC on-line database.
60947-3 Amend. 2 IEC:2005 – 7 –
Replace the reference to IEC 61000-4-3:1995 by the following:
IEC 61000-4-3:2002, Electromagnetic compatibility (EMC) – Part 4-3: Testing and measure-
ment techniques – Radiated radio-frequency electromagnetic field immunity test
Amendment 1 (2002)
Replace the reference to IEC 61000-4-4:1995 by the following:
IEC 61000-4-4:2004, Electromagnetic compatibility (EMC) – Part 4-4: Testing and measure-
ment techniques – Electrical fast transient/burst immunity test
Add, after IEC 61000-4-5:1995, the following reference:
Amendment 1 (2000)
Replace the reference to IEC 61000-4-6:1996 by the following:
IEC 61000-4-6:2003, Electromagnetic compatibility (EMC) – Part 4-6: Testing and measure-
ment techniques – Immunity to conducted disturbances, induced by radio-frequency fields
Replace the reference to CISPR 11:1997 by the following:
CISPR 11:2003, Industrial, scientific and medical (ISM) radio-frequency equipment –
Electromagnetic disturbance characteristics – Limits and methods of measurement
Replace the reference to CISPR 22:1997 by the following:
CISPR 22:2003, Information technology equipment – Radio disturbance characteristics –
Limits and methods of measurement
Page 15
2 Definitions
Insert, after the first paragraph, the following alphabetical index of definitions:
Reference
D
Dependent manual operation (of a mechanical switching device) . 2.13
Disconnector. 2.2
Disconnector-fuse. 2.7
F
Fuse-combination unit. 2.4
Fuse-disconnector. 2.8
Fuse-switch. 2.6
Fuse-switch-disconnector. 2.10
I
Independent manual operation (of a mechanical switching device). 2.14
60947-3 Amend. 2 IEC:2005 – 9 –
M
Multiple tip contact system . 2.12
S
Semi-independent manual operation . 2.15
Single pole operated three pole switch . 2.11
Stored energy operation (of a mechanical switching device) . 2.16
Switch (mechanical). 2.1
Switch-disconnector. 2.3
Switch-disconnector-fuse. 2.9
Switch-fuse. 2.5
Renumber, on page 17, definitions 2.11, 2.12, 2.13 and 2.14 as 2
...
17B/1328/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJET DE COMITÉ POUR VOTE (CDV)
Project number IEC 60947-3, A2, Ed.2.0
Numéro de projet
IEC/TC or SC: Date of circulation Closing date for voting (Voting
SC 17B
Date de diffusion mandatory for P-members)
CEI/CE ou SC:
Date de clôture du vote (Vote
2004-02-06
obligatoire pour les membres (P))
2004-07-09
Titre du CE/SC: Appareillage à basse tension TC/SC Title: Low-voltage switchgear and
controlgear
Secretary: Mr. Marcel DELAPLACE (France)
Secrétaire: E-mail: marcel_delaplace@mail.schneider.fr
Also of interest to the following committees Supersedes documents
Intéresse également les comités suivants Remplace les documents
17B/1295/CD and 17B/1314A/CC
Functions concerned
Fonctions concernées
Safety EMC Environment Quality assurance
Sécurité CEM Environnement Assurance qualité
CE DOCUMENT EST TOUJOURS À L'ÉTUDE ET SUSCEPTIBLE DE THIS DOCUMENT IS STILL UNDER STUDY AND SUBJECT TO CHANGE. IT
MODIFICATION. IL NE PEUT SERVIR DE RÉFÉRENCE. SHOULD NOT BE USED FOR REFERENCE PURPOSES.
LES RÉCIPIENDAIRES DU PRÉSENT DOCUMENT SONT INVITÉS À RECIPIENTS OF THIS DOCUMENT ARE INVITED TO SUBMIT, WITH THEIR
PRÉSENTER, AVEC LEURS OBSERVATIONS, LA NOTIFICATION DES COMMENTS, NOTIFICATION OF ANY RELEVANT PATENT RIGHTS OF
DROITS DE PROPRIÉTÉ DONT ILS AURAIENT ÉVENTUELLEMENT WHICH THEY ARE AWARE AND TO PROVIDE SUPPORTING
CONNAISSANCE ET À FOURNIR UNE DOCUMENTATION EXPLICATIVE. DOCUMENTATION.
Titre : Amendement 2 à la CEI 60947-3, Ed.2.0: Title : Amendment 2 to IEC 60947-3, Ed.2.0: Low-
Appareillage à basse tension - Partie 3: voltage switchgear and controlgear - Part 3:
Interrupteurs, sectionneurs, interrupteurs- Switches, disconnectors, switch-disconnectors
sectionneurs et combinés fusibles and fuse-combination units
Note d'introduction Introductory note
ATTENTION ATTENTION
CDV soumis en parallèle au vote (CEI) Parallel IEC CDV/CENELEC Enquiry
et à l’enquête (CENELEC)
permitted to download this electronic file, to make a copy and to print out the content for the sole
purpose of preparing National Committee positions. You may not copy or "mirror" the file or
printed version of the document, or any part of it, for any other purpose without permission in
writing from IEC.
FORM CDV (IEC)
2002-08-09
60947-3 Amend. 2/CDV IEC:200X – 2 –
FOREWORD
This amendment has been prepared by subcommittee 17B: Low-voltage switchgear and
controlgear, of IEC technical committee No. 17: Switchgear and controlgear.
The text of this amendment is based on the following documents:
FDIS Report on voting
17B/XXXX/FDIS 17B/XXXX/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 the base publication and its amendments will
remain unchanged until 2008. At this date, the publication will be:
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
_______________
Page 3
CONTENTS
Add the following:
Annex C (normative) Individually operated single pole three pole switches .
Table 12 – Temperature-rise limits for terminals and accessible parts .
Page 11
1.1 Scope and object
Insert, after the third paragraph, the following new paragraph:
The requirements for individually operated single pole three pole switches are included in
Annex C.
60947-3 Amend. 2/CDV IEC:200X – 3 –
Page 13 and amendment 1, page 3
1.2 Normative references
Replace the text of the first paragraph by the following:
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.
Add, after IEC 60050(441):1984, the following reference:
Amendment 1 (2000)
Insert, after IEC 60050(441), the following new reference:
IEC 60269 (all parts), Low-voltage fuses
Replace the reference to IEC 60417-2:1998 by the following:
IEC 60417-DB:2002 , Graphical symbols for use on equipment
Replace the reference to IEC 60447:1993 by the following:
IEC 60447:2004, Basic and safety principles for man-machine interface, marking and
identification − Actuating principles
Replace the reference to IEC 60617-7:1996 by the following:
IEC 60617-DB:2001 , Graphical symbols for diagrams
Add, after IEC 60947-1:1999, the following references:
Amendment 1 (2000)
Amendment 2 (2001)
Replace the reference to IEC 60947-2:1995 by the following:
IEC 60947-2:2003, Low-voltage switchgear and controlgear – Part 2: Circuit-breakers
“DB” refers to the IEC on-line database.
60947-3 Amend. 2/CDV IEC:200X – 4 –
Replace the reference to IEC 60947-4-1:1990 by the following:
IEC 60947-4-1:2000, Low-voltage switchgear and controlgear – Part 4-1: Contactors and
motor-starters – Electromechanical contactors and motor-starters
Amendment 1 (2002)
Replace the reference to IEC 60947-5-1:1997 by the following:
IEC 60947-5-1:2003, Low-voltage switchgear and controlgear – Part 5-1: Control circuit
devices and switching elements – Electromechanical control circuit devices
Add, after IEC 61000-4-2:1995, the following references:
Amendment 1 (1998)
Amendment 2 (2000)
Replace the reference to IEC 61000-4-3:1995 by the following:
IEC 61000-4-3:2002, Electromagnetic compatibility (EMC) – Part 4-3: Testing and
measurement techniques – Radiated radio-frequency electromagnetic field immunity test
Amendment 1 (2002)
Add, after IEC 61000-4-4:1995, the following references:
Amendment 1 (2000)
Amendment 2 (2001)
Add, after IEC 61000-4-5:1995, the following reference:
Amendment 1 (2000)
Replace the reference to IEC 61000-4-6:1996 by the following:
IEC 61000-4-6:2003, Electromagnetic compatibility (EMC) – Part 4-6: Testing and
measurement techniques – Immunity to conducted disturbances, induced by radio-frequency
fields
Replace the reference to CISPR 11:1997 by the following:
CISPR 11:2003, Industrial, scientific and medical (ISM) radio-frequency equipment –
Electromagnetic disturbance characteristics – Limits and methods of measurement
60947-3 Amend. 2/CDV IEC:200X – 5 –
Replace the reference to CISPR 22:1997 by the following:
CISPR 22:2003, Information technology equipment – Radio disturbance characteristics –
Limits and methods of measurement
Page 15
2 Definitions
Insert, after the first paragraph, the following alphabetical index of definitions:
Reference
D
Dependent manual operation (of a mechanical switching device) . 2.13
Disconnector. 2.2
Disconnector-fuse. 2.7
F
Fuse-combination unit. 2.4
Fuse-disconnector. 2.8
Fuse-switch. 2.6
Fuse-switch-disconnector. 2.10
I
Independent manual operation (of a mechanical switching device). 2.14
Individually operated single pole three pole switch. 2.11
M
Multiple tip contact system. 2.12
S
Semi-independent manual operation . 2.15
Stored energy operation (of a mechanical switching device) . 2.16
Switch (mechanical). 2.1
Switch-disconnector. 2.3
Switch-disconnector-fuse. 2.9
Switch-fuse. 2.5
Renumber, on page 17, definitions 2.11, 2.12, 2.13 and 2.14 as 2.13, 2.14, 2.15 and 2.16
respectively.
Insert, on page 17, after the definition 2.10, the following new definitions:
2.11
individually operated single pole three pole switch
device consisting of three individually operable single pole switch disconnecting devices
according to this standard, rated as a complete unit for a use in a three-phase system
60947-3 Amend. 2/CDV IEC:200X – 6 –
2.12
multiple tip contact system
a multiple tip contact system consists of more than one contact gap per pole, which can be
switched, in series and/or in parallel
Page 19
3.2 According to the method of operation of manually operated equipment
Replace “(see 2.11)”, “(see 2.12)” and “(see 2.13)” by “(see 2.13)”, “(see 2.14)” and “(see
2.15)” respectively.
Amendment 1, page 7
7.1.4 Actuator
Replace the existing text of this subclause by the following:
Subclause 7.1.4 of IEC 60947-1 applies.
7.1.4.2 Direction of movement
Delete this subclause.
Page 35
7.2.1.1 General
Replace, in the second paragraph, “see 2.11 and 2.13” by “see 2.13 and 2.15”.
Page 45 and amendment 1, page 13
8.1.3.1 General
Replace the existing text of this subclause by the following:
The following tests apply:
− mechanical operation test (see 8.1.3.2)
operation of the switch, disconnector, switch-disconnector or fuse-combination unit during
manufacture and/or other routine test may take the place of the tests listed above,
provided the same conditions apply and the number of operations is not less than that
specified;
60947-3 Amend. 2/CDV IEC:200X – 7 –
− dielectric test (see 8.1.3.3)
if, by the control of materials and manufacturing processes, the integrity of the dielectric
properties has been proven, these tests may be replaced by sampling tests according to a
recognized sampling plan (see IEC 60410).
8.1.3.3 Dielectric test
Replace the first sentence of the first paragraph by the following:
The test conditions shall be in accordance with 8.3.3.4.2 of IEC 60947-1. As an alternative,
the combined test according to 8.3.3.4.2, item 3), of IEC 60947-1 is allowed.
Page 47 and amendment 1, page 15
8.2.5.1 Condition of equipment for tests
Replace the first paragraph by the following:
The test of the actuator mechanism and position indicating device shall be conducted as part
of test sequence I (see 8.3.3 and Table 11).
8.2.5.2.1 Dependent and independent manual operation
Replace the first paragraph by the following:
The force necessary to operate the device to the open position shall be measured at the
extremity of the actuator. The measured force F shall be equal to the average value of
maximum force obtained from three consecutive operations, with the device in a clean and
new condition. This force F shall then be used for the establishment of the test force in
Table 8.
Add, to the end of the second paragraph, the following sentences:
In the case of multiple tip contact systems, the least number of contact tips shall be fixed
together as necessary to hold the mechanism closed with the force 3F applied. The
appropriate means to keep the contact(s) closed, for example by welding, and the number of
contacts sufficient to withstand the force 3F, shall be specified by the manufacturer. The
number of contacts and the method used to keep the contacts closed shall be stated in the
report.
60947-3 Amend. 2/CDV IEC:200X – 8 –
Amendment 1, page 15
8.2.5.2.2 Dependent power operation
Add to the end of the first paragraph, the following sentences:
In the case of multiple tip contact systems, the least number of contact tips shall be fixed
together as necessary to hold the mechanism closed. The appropriate means to keep the
contact(s) closed, for example by welding, and the number of contacts sufficient to withstand
the force 3F, shall be specified by the manufacturer. The number of contacts and the method
used to keep the contacts closed shall be stated in the report.
8.2.5.2.3 Independent power operation
Add to the end of the first paragraph, the following sentences:
In the case of multiple tip contact systems, the least number of contact tips shall be fixed
together as necessary to hold the mechanism closed. The appropriate means to keep the
contact(s) closed, for example by welding, and the number of contacts sufficient to withstand
the force 3F, shall be specified by the manufacturer. The number of contacts and the method
used to keep the contacts closed shall be stated in the report.
Page 51
Table 9 – List of type tests applicable to a given equipment
a
Add, in the first column, first row, after “Temperature-rise”, the footnote symbol “ ”.
Add, in the table, the following new footnote:
a
Applies to 8.3.2.1.3 only.
Page 51 and amendment 1, page 17
8.3.1 Test sequences
Replace the second paragraph by the following:
For each sequence, tests shall be made in the order listed in accordance with the
requirements of the appropriate subclause, apart from the temperature-rise test (simplified testing
only) and dielectric properties test of test sequence I, which may be conducted on a separate sample.
60947-3 Amend. 2/CDV IEC:200X – 9 –
Page 53 and amendment 1, page 17
Table 10 – Overall scheme of test sequences
f g
Add, in the second column, first row, after “Temperature-rise ”, a second footnote symbol “ ”.
Add, in the table, the following new footnote:
g
Applies to 8.3.2.1.3 only.
a
Replace, in the second column, sixth row, “Temperature-rise verification ” by “Temperature-
rise verification”.
Amendment 1, page 19
8.3.2.1.3 Simplified test procedure
Modify, on page 21, item c), the existing text of the second paragraph to read:
Tests performe
...
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