SIST EN 60934:2003
(Main)Circuit-breakers for equipment (CBE)
Circuit-breakers for equipment (CBE)
This International Standard is applicable to mechanical switching devices designed as "circuitbreakers for equipment" (CBE) intended to provide protection to circuits within electrical equipment.
NOTE 1 The term "equipment" includes appliances.
NOTE 2 The protected components are usually motors, transformers, internal wiring, etc. CBEs may have a rated short-circuit capacity higher than that required for overload conditions and may, in addition, have a conditional short-circuit current rating in association with a specified short-circuit protective device (SCPD). This standard is also applicable to switching devices for protection of electrical equipment in case of undervoltage and/or overvoltage. It is applicable for a.c. not exceeding 440 V and/or d.c. not exceeding 250 V and a rated current not exceeding 125 A. This standard covers CBEs which are intended for
– automatic interruption and non-automatic or automatic resetting;
– automatic interruption and non-automatic or automatic resetting and manual switching operation. It also covers CBE-switches, in which the means for automatic interruption are inhibited or not present by construction (see 3.1.3). NOTE 3 This standard may be used as a guiding document for voltages up to 630 V a.c. NOTE 4 Requirements for CBEs suitable for isolation are under consideration. This standard contains all the requirements necessary to ensure compliance with the operational characteristics required for these devices by type tests. It also contains the details relative to test requirements and methods of testing necessary to ensure reproducibility of test results.
Geräteschutzschalter (GS)
Disjoncteurs pour équipement (DPE)
S'applique aux dispositifs mécaniques de coupure désignés sous le nom de "disjoncteurs pour équipement" (DPE) destinés à la protection interne des équipements électriques pour des tensions n'excédant pas 440 V en courant alternatif et/ou 250 V en courant continu et un courant assigné n'excédant pas 125 A.
Odklopniki za opremo (CBE) (IEC 60934:2000)
Ta mednarodni standard se uporablja za mehanske stikalne naprave, ki so izdelane kot »odklopniki za opremo« (CBE), ki se uporabljajo za zaščito tokokrogov znotraj električne opreme.
OPOMBA 1: Izraz »oprema« vključuje aparate.
OPOMBA 2: Zaščiteni deli so navadno motorji, transformatorji, notranje ožičenje itd. Odklopniki za opremo imajo lahko višjo nazivno kratkostično zmogljivost, kot se zahteva v pogojih preobremenitve, in lahko imajo pogojno kratkostično tokovno obremenljivost v povezavi z določeno napravo za zaščito pred kratkim stikom (SCPD). Ta standard se uporablja tudi za stikalne naprave za zaščito električne opreme v primeru podnapetosti in/ali prenapetosti. Uporablja se za izmenični tok, ki ne presega 440 V, in/ali enosmerni tok, ki ne presega 250 V, ter nazivni tok, ki ne presega 125 A. Ta standard zajema odklopnike za opremo, ki so namenjeni za:
– samodejno prekinitev in nesamodejno ali samodejno obnovitev;
– samodejno prekinitev, nesamodejno ali samodejno obnovitev in ročne stikalne operacije. Zajema tudi stikala odklopnikov za opremo, v katerih so sredstva za samodejno prekinitev ovirana ali ob izdelavi niso prisotna (glej točko 3.1.3). OPOMBA 3: Ta standard se lahko uporablja tudi kot vodilni dokument za izmenične napetosti do 630 V. OPOMBA 4: Zahteve za odklopnike za opremo, ki so primerni za izolacijo, so v obravnavi. Ta standard vsebuje vse zahteve, ki so nujne za zagotovitev skladnosti z obratovalnimi značilnostmi, ki so za te naprave zahtevane v tipskih preskusih. Vsebuje tudi podrobnosti glede preskusnih zahtev in metod preskušanja, ki so nujne za zagotovitev ponovljivosti rezultatov preskusov.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 60934:2003
01-marec-2003
1DGRPHãþD
SIST EN 60934:1996
SIST EN 60934:1996/A11:1999
SIST EN 60934:1996/A2:1997
Odklopniki za opremo (CBE) (IEC 60934:2000)
Circuit-breakers for equipment (CBE)
Geräteschutzschalter (GS)
Disjoncteurs pour équipement (DPE)
Ta slovenski standard je istoveten z: EN 60934:2001
ICS:
29.120.40 Stikala Switches
29.120.50 9DURYDONHLQGUXJD Fuses and other overcurrent
PHGWRNRYQD]DãþLWD protection devices
SIST EN 60934:2003 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 60934:2003
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SIST EN 60934:2003
EUROPEAN STANDARD EN 60934
NORME EUROPÉENNE
EUROPÄISCHE NORM January 2001
ICS 29.120.40;29.120.50 Supersedes EN 60934:1994 + A1:1994 + A2:1997 + A11:1998
English version
Circuit-breakers for equipment (CBE)
(IEC 60934:2000)
Disjoncteurs pour équipement (DPE) Geräteschutzschalter (GS)
(CEI 60934:2000) (IEC 60934:2000)
This European Standard was approved by CENELEC on 2000-11-01. CENELEC members are bound
to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard 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 European Standard 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, Czech Republic,
Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway,
Portugal, 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
© 2001 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60934:2001 E
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SIST EN 60934:2003
EN 60934:2001 - 2 -
Foreword
The text of document 23E/430/FDIS, future edition 3 of IEC 60934, prepared by SC 23E,
Circuit-breakers and similar equipment for household use, of IEC TC 23, Electrical accessories, was
submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60934 on
2000-11-01.
This European Standard supersedes EN 60934:1994 + A1:1994 + A2:1997 + A11:1998.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2001-08-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2003-11-01
Annexes designated "normative" are part of the body of the standard.
Annexes designated "informative" are given for information only.
In this standard, annexes A, B, C, D, E, G, H, J, K and ZA are normative and annex F is informative.
Annex ZA has been added by CENELEC.
In this standard the following print types are used:
- requirements: in roman type;
- test specifications: in italic type;
- notes: in smaller roman type.
__________
Endorsement notice
The text of the International Standard IEC 60934:2000 was approved by CENELEC as a European
Standard without any modification.
__________
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SIST EN 60934:2003
- 3 - EN 60934:2001
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of
any of these publications apply to this European Standard only when incorporated in it by
amendment or revision. For undated references the latest edition of the publication referred to
applies (including amendments).
NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
IEC 60050-151 1978 International Electrotechnical Vocabulary--
(IEV)
Chapter 151: Electrical and magnetic
devices
IEC 60050-441 1984 Chapter 441: Switchgear, controlgear and--
fuses
IEC 60050-604 1987 Chapter 604: Generation, transmission--
and distribution of electricity - Operation
IEC 60050-826 1982 Chapter 826: Electrical installations of
buildings
+ A1 1990
+ A2 1995
+ A3 1999 HD 384.2 S2 2001
IEC 60060-1 1989 High-voltage test techniques HD 588.1 S1 1991
+ corr. March 1990 Part 1: General definitions and test
requirements
1)
IEC 60068-2-20 1979 Basic environmental testing procedures HD 323.2.20 S3 1988
Part 2: Tests - Test T: Soldering
IEC 60099-1 1991 Surge arresters EN 60099-1 1994
Part 1: Non-linear resistor type gapped
surge arresters for a.c. systems
2)
IEC 60227 Series Polyvinyl chloride insulated cables of HD 21 Series
rated voltages up to and including
450/750 V
IEC 60269 Series Low-voltage fuses EN 60269 Series
1)
HD 323.2.20 S3 includes A2:1987 to IEC 60068-2-20.
2)
The HD 21 series is related to but not equivalent to the IEC 60227 series.
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SIST EN 60934:2003
EN 60934:2001 - 4 -
Publication Year Title EN/HD Year
IEC 60417-1 1998 Graphical symbols for use on equipment EN 60417-1 1999
Part 1: Overview and application
IEC 60529 1989 Degrees of protection provided by EN 60529 1991
enclosures (IP Code) + corr May 1993
IEC 60664 Series Insulation coordination for equipment--
within low-voltage systems
IEC 60664-1 1992 Part 1: Principles, requirements and tests HD 625.1 S1 1996
(mod) + corr. November 1996
IEC 60664-3 1992 Part 3: Use of coatings to achieve HD 625.3 S1 1997
insulation coordination of printed board
assemblies
3)
IEC 60695-2-1/X Series Fire hazard testing EN 60695-2-1/X Series
Part 2: Test methods - Section 1: Glow-
wire test methods
4)
IEC 60898 1995 Electrical accessories - Circuit-breakers--
for overcurrent protection for household
and similar installations
IEC 60947-1 1999 Low-voltage switchgear and controlgear EN 60947-1 1999
(mod) Part 1: General rules + corr. October 1999
IEC 60950 (mod) 1999 Safety of information technology EN 60950 2000
+ corr. January 2000 equipment
IEC 61000-4-2 1995 Electromagnetic compatibility (EMC) EN 61000-4-2 1995
Part 4-2: Testing and measurement
techniques - Electrostatic discharge
immunity test
IEC 61000-4-3
1995 Part 4-3: Testing and measurement EN 61000-4-3 1996
(mod)
techniques - Radiated, radio-frequency,
electromagnetic field immunity test
IEC 61000-4-4 1995 Part 4-4: Testing and measurement EN 61000-4-4 1995
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
CISPR 22 (mod) 1997 Information technology equipment - Radio EN 55022 1998
disturbance characteristics - Limits and + corr. August 1999
methods of measurement
3)
EN 60695-2-1/X:1996 are superseded by EN 60695-2-10:2001 to EN 60695-2-13:2001, which are based on
IEC 60695-2-10:2000 to IEC 60685-2-13:2000.
4)
IEC 60898:1987 + corrigendum May 1988 + A2:1990 + A3:1990 + corrigendum August 1990, mod., are harmonized as
EN 60898:1991. This European Standard applies with its corrigendum October 1991 and its amendments A1:1991
(IEC/A1:1989) and A11:1994 up to A19:2000.
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SIST EN 60934:2003
NORME CEI
INTERNATIONALE IEC
60934
INTERNATIONAL
Troisième édition
STANDARD
Third edition
2000-10
Disjoncteurs pour équipement (DPE)
Circuit-breakers for equipment (CBE)
IEC 2000 Droits de reproduction réservés Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in
utilisée sous quelque forme que ce soit et par aucun procédé, any form or by any means, electronic or mechanical,
électronique ou mécanique, y compris la photocopie et les including photocopying and microfilm, without permission in
microfilms, sans l'accord écrit de l'éditeur. writing from the publisher.
International Electrotechnical Commission 3, rue de Varembé Geneva, Switzerland
Telefax: +41 22 919 0300 e-mail: inmail@iec.ch IEC web site http://www.iec.ch
CODE PRIX
Commission Electrotechnique Internationale
XE
PRICE CODE
International Electrotechnical Commission
Pour prix, voir catalogue en vigueur
For price, see current catalogue
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SIST EN 60934:2003
60934 IEC:2000 – 3 –
CONTENTS
Page
FOREWORD .11
Clause
1 Scope and object . 15
2 Normative references. 15
3 Definitions. 19
3.1 Definitions related to protection and switching devices. 19
3.2 General terms. 21
3.3 Definitions related to current . 23
3.4 Definitions related to voltage. 25
3.5 Definitions related to constructional elements of a CBE . 27
3.6 Definitions related to releases in CBEs . 29
3.7 Definitions related to insulation and clearances in a CBE. 31
3.8 Definitions related to operation of CBEs. 35
3.9 Definitions related to the operating characteristic of CBEs . 39
3.10 Definitions related to characteristic quantities . 39
3.11 Definitions concerning coordination of CBEs and SCPDs associated
in the same circuit. 41
3.12 Definitions related to terminals and terminations. 43
3.13 Definitions related to tests . 49
4 Classification .49
4.1 Quantity of poles. 49
4.2 Method of mounting . 49
4.3 Method of connection. 49
4.4 Method of operation. 51
4.5 Mode of tripping. 51
4.6 Influence of the ambient temperature. 51
4.7 Trip-free behaviour . 53
4.8 Influence of the mounting position. 53
4.9 Electrical performance . 53
5 Characteristics of CBEs . 53
5.1 List of characteristics . 53
5.2 Rated quantities. 53
5.3 Standard and preferred values. 57
6 Marking and other product information . 59
7 Standard conditions for operation in service. 61
7.1 Ambient air temperature . 61
7.2 Altitude . 61
7.3 Atmospheric conditions. 63
8 Requirements for construction and operation . 63
8.1 Mechanical design . 63
8.2 Protection against electric shock. 87
8.3 Temperature-rise . 87
8.4 Dielectric properties. 89
8.5 Conditions for automatic operation. 91
8.6 Electrical performance . 95
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SIST EN 60934:2003
60934 IEC:2000 – 5 –
Clause Page
8.7 Performance under conditional short-circuit current conditions. 95
8.8 Resistance to mechanical shock and impact . 95
8.9 Resistance to heat . 95
8.10 Resistance to abnormal heat and to fire. 95
8.11 Resistance to tracking . 95
8.12 Resistance to rusting . 97
9 Tests . 99
9.1 Type tests and sequences . 99
9.2 Test conditions . 101
9.3 Test of indelibility of marking . 103
9.4 Test of reliability of terminals, current-carrying parts and connections. 103
9.5 Test of reliability of terminals for external conductors (see 3.12.15) . 109
9.6 Test of protection against electric shock . 113
9.7 Test of dielectric properties. 113
9.8 Test of temperature-rise. 121
9.9 28-day test. 123
9.10 Test of tripping characteristics . 123
9.11 Verification of electrical operational capability. 125
9.12 Conditional short-circuit tests. 133
9.13 Test of resistance to mechanical shock and impact. 139
9.14 Tests of resistance to heat. 139
9.15 Test of resistance to abnormal heat and to fire . 141
9.16 Test of resistance to tracking . 141
9.17 Test of resistance to rusting. 143
Annex A (normative) Time-current zone . 155
Annex B (normative) Determination of clearances and creepage distances . 157
Annex C (normative) Test sequences and number of samples to be submitted
for certification purposes . 161
Annex D (normative) Correspondence between ISO and AWG copper conductors. 167
Annex E (normative) Examples of terminals . 169
Annex F (informative) Coordination between a CBE and a short-circuit protective
device (SCPD) associated in the same circuit. 187
Annex G (normative) Electromagnetic behaviour of CBEs . 213
Annex H (normative) Correlation between nominal voltage of the supply systems and
the line-to-neutral voltage relevant for determining the rated impulse voltage. 217
Annex J (normative) Routine or statistical tests . 219
Annex K (normative) Additional requirements for electrical performance
of CBE-switches.223
Bibliography . 225
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SIST EN 60934:2003
60934 IEC:2000 – 7 –
Page
Figure 1 – Thread-forming screw. 145
Figure 2 – Thread-cutting screw . 145
Figures 3 to 6 – Test circuits for overcurrent tests . 147
Figure 7 – Standard test finger . 149
Figure 8 – Ball pressure apparatus. 151
Figure 9 – Arrangements and dimensions of the electrodes for the tracking test . 151
Figures 10 to 13 – Test circuits for verification of the conditional short-circuit current. 153
Figures A.1 to A.4 .155
Figures B.1 to B.10 . 159
Figure E.1 – Examples of pillar terminals . 169
Figure E.2 – Examples of screw terminals and stud terminals. 171
Figure E.3 – Examples of saddle terminals. 173
Figure E.4 – Examples of lug terminals . 173
Figure E.5 – Examples of screwless terminals with clamping means . 175
Figure E.6 – Dimensions of male tabs . 177
Figure E.7 – Dimensions of round dimple detents of male tabs (see figure E.6). 179
Figure E.8 – Dimensions of rectangular dimple detents of male tabs . 179
Figure E.9 – Dimensions of hole detents of male tabs . 179
Figure E.10 – Dimensions of male tabs . 181
Figure E.11 – Dimensions of male tabs . 181
Figure E.12 – Dimensions of male tabs . 181
Figure E.13 – Dimensions of male tabs for two different sizes of female connectors . 183
Figure E.14 – Dimensions of female connectors for male tabs. 185
Figure F.1 – Thermal only CBE, backed up by thermal magnetic circuit-breaker. 199
Figure F.2 – Thermal only CBE, backed up by a fuse . 201
Figure F.3 – Thermal-magnetic CBE backed up by thermal-magnetic circuit-breaker. 203
Figure F.4 – Hydraulic-magnetic CBE backed up by thermal-magnetic circuit-breaker . 205
Figure F.5 – Thermal CBE backed up by a hydraulic-magnetic circuit-breaker. 205
Figure F.6 – Energy-limiting CBE, backed up by thermal-magnetic circuit-breaker. 207
Figure F.7 – Energy-limiting CBE, backed up by a fuse . 209
Figure F.8 – Examples illustrating proper and improper coordination. 211
Table 1 – Minimum clearances for basic and reinforced insulation. 67
Table 2 – Minimum creepage distances. 71
Table 3 – Connectable cross-sectional areas of external copper conductors
for screw type and screwless terminals . 75
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SIST EN 60934:2003
60934 IEC:2000 – 9 –
Page
Table 4 – Minimum distance between clamping screw and the end of conductor
when fully inserted . 79
Table 5 – Dimensions of tabs in millimetres –
Dimensions A, B, C, D, E, F, J, M, N, P and Q. 83
Table 6 – Dimensions of tabs in millimetres –
Dimensions H, I, T, K, R, G, L, S and U. 85
Table 7 – Dimensions in millimetres of combined male tabs for two different sizes
of female connectors .85
Table 8 – Temperature-rise values for CBEs for different reference
ambient air temperatures (T) . 89
Table 9 – Time-current operating characteristics . 91
Table 10 – Operating limits of undervoltage and zero-voltage releases (for a.c. and d.c.). 93
Table 11 – Test conditions for electrical performance for CBEs intended for general use,
including inductive circuits.97
Table 12 – Test conditions for electrical performance of CBEs used in essentially
resistive circuits only. 99
Table 13 – List of type tests . 99
Table 14 – Standard cross-sections of copper conductors corresponding to
the rated currents. 101
Table 15 – Screw-thread diameter and applied torques . 105
Table 16 – Insertion and withdrawal forces. 107
Table 17 – Push/pull force. 109
Table 18 – Pulling forces. 111
Table 19 – Make-up of conductors for the test of 9.5.3 . 111
Table 20 – Test voltages . 117
Table 21 – Impulse withstand test voltages for verification of insulation coordination . 121
Table 22 – Power factor and time constant of test circuit. 133
Table C.1 – Test sequences. 161
Table C.2 – Number of samples for full test procedure . 163
Table C.3 – Reduction of samples for simplified test procedure. 165
Table D.1 – Correspondence between ISO and AWG conductor cross-sections . 167
Table G.2.2 – Minimum EMC immunity performances of CBEs . 215
Table H.1 – Nominal voltages and corresponding rated impulse voltages . 217
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SIST EN 60934:2003
60934 IEC:2000 – 11 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________
CIRCUIT-BREAKERS FOR EQUIPMENT (CBE)
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the 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, the IEC publishes International Standards. Their preparation is
entrusted to technical committees; any IEC National Committee interested in the subject dealt with may
participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. The 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 the 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 National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical specifications, technical reports or guides and they are accepted by the National
Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60934 has been prepared by subcommittee 23E: Circuit-breakers
and similar equipment for household use, of IEC technical committee 23: Electrical
accessories.
This third edition cancels and replaces the second edition published in 1993 and its
amendments 1 (1994) and 2 (1997), and constitutes a technical revision.
The text of this standard is based on the following documents:
FDIS Report on voting
23E/430/FDIS 23E/441/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 3.
Annexes A, B, C, D, E, G, H, J and K form an integral part of this standard.
Annex F is for information only.
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SIST EN 60934:2003
60934 IEC:2000 – 13 –
In this standard, the following print types are used:
– Requirements proper: in roman type
– Test specifications: in italic type
– Explanatory
...
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