1、 IEC 60934 Edition 3.0 2013-01 INTERNATIONAL STANDARD NORME INTERNATIONALE Circuit-breakers for equipment (CBE) Disjoncteurs pour quipement (DPE) IEC60934:2000/A2:2013AMENDMENT 2 AMENDEMENT 2 THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2013 IEC, Geneva, Switzerland All rights reserved. Unless
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15、e.iec.ch/csc Si vous dsirez nous donner des commentaires sur cette publication ou si vous avez des questions contactez-nous: csciec.ch. IEC 60934 Edition 3.0 2013-01 INTERNATIONAL STANDARD NORME INTERNATIONALE Circuit-breakers for equipment (CBE) Disjoncteurs pour quipement (DPE) INTERNATIONAL ELECT
16、ROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE J ICS 29.120.40; 29.120.50 PRICE CODE CODE PRIX ISBN 978-2-83220-527-3 AMENDMENT 2 AMENDEMENT 2 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale Warnin
17、g! Make sure that you obtained this publication from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. 2 60934 Amend. 2 IEC:2013 FOREWORD This amendment has been prepared by subcommittee 23E: Circuit-breakers and similar equip
18、ment for household use, of IEC technical committee 23: Electrical accessories. The text of this amendment is based on the following documents: FDIS Report on voting 23E/767/FDIS 23E/774/RVD Full information on the voting for the approval of this amendment can be found in the report on voting indicat
19、ed 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 web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will
20、 be reconfirmed, withdrawn, replaced by a revised edition, or amended. _ 1 Scope Replace the entire existing text by the following: This International Standard is applicable to mechanical switching devices designed as “circuit-breakers for equipment“ (CBE) for household and similar applications. CBE
21、s according to this standard are intended to provide protection to circuits within electrical equipment including its components (e.g. motors, transformers, internal wiring). This standard covers also CBEs applicable for protection of electrical equipment in case of undervoltage and/or overvoltage.
22、This standard also covers CBEs which are suitable for isolation. NOTE The term “equipment“ includes appliances. CBEs are not applicable for overcurrent protection of wiring installations of buildings. CBEs according to this standard have: a rated voltage not exceeding 440 V a.c. (between phases) and
23、/or d.c. not exceeding 250 V; a rated current not exceeding 125 A; a short-circuit capacity (Icn) of at least 6xIn(a.c types) and 4xIn(d.c.-types) but not exceeding 3 000 A. 60934 Amend. 2 IEC:2013 3 CBEs may have a conditional short-circuit current rating in association with a specified short-circu
24、it protective device (SCPD). A guide for coordination of a CBE associated in the same circuit with a SCPD is given in Annex F. For CBEs having a degree of protection higher than IP20 according to IEC 60529, for use in locations where hazardous environmental conditions prevail (e.g. excessive humidit
25、y, heat or cold or deposition of dust) and in hazardous locations (e.g. where explosions are liable to occur), special constructions may be required. This standard contains all the requirements necessary to ensure compliance with the operational characteristics required for these devices by type tes
26、ts. It also contains the details relative to test requirements and methods of testing necessary to ensure reproducibility of test results. This standard states: a) the characteristics of CBEs; b) the conditions with which CBEs shall comply, with reference to: 1) their operation and behaviour in norm
27、al service; 2) their operation and behaviour in case of overload; 3) their operation and behaviour in case of short-circuits up to their rated short-circuit capacity; 4) their dielectric properties; c) the tests intended for confirming that these conditions have been met and the methods to be adopte
28、d for the tests; d) the data to be marked on the devices; e) the test sequences to be carried out and the number of samples to be submitted for certification purposes (see Annex C); f) the routine tests to be carried out to reveal unacceptable variations in material or manufacture, likely to affect
29、safety (see Annex J). 3 Terms and definitions 3.1.2 circuit-breaker for equipment (CBE) Add, after the existing definition, a new note as follows: NOTE These CBEs are intended for: automatic interruption and non-automatic or automatic resetting; automatic interruption and non-automatic or automatic
30、resetting and manual switching operation. 3.1.3 E-type CBE Delete the existing definition introduced by Amendment 1 and replace by the following text: “void“ 4.5.3 E-type CBEs Delete the existing subclause. 4 60934 Amend. 2 IEC:2013 5.2.5 Rated conditional short-circuit current (Inc) (optional) Dele
31、te, in the title, “(optional)” text introduced by Amendment 1. Replace the existing text of the subclause by the following: The value of the conditional short-circuit current (see 3.11.5) if assigned to the CBE by the manufacturer. Renumber the existing note as “NOTE 1“. Add a new “NOTE 2”, as follo
32、ws: NOTE 2 The manufacturer can decide not to assign a value of Inc to the CBE, in which case the relevant tests are omitted. 5.2.5.1 Rated conditional short-circuit current performance category PC1 (Inc1) (optional) (see 9.12.4.2) Delete, in the title, “(optional)” text introduced by Amendment 1. R
33、eplace the existing text of the subclause by the following: The value of rated conditional short-circuit current, if assigned by the manufacturer, for which the prescribed conditions do not include the fitness of the CBE for its further use. 5.2.5.2 Rated conditional short-circuit current, performan
34、ce category PC2 (Inc2) (optional) (see 9.12.4.3) Delete, in the title, “(optional)”. Replace the existing text of the subclause by the following: The value of rated conditional short-circuit current, if assigned by the manufacturer, for which the prescribed conditions do include the fitness of the C
35、BE for its further use. 8.5.1 Standard time-current zone Replace the existing text of the listed items in the fourth paragraph by the following: the test currents indicated in Table 9, as multiples of the rated current; the times (t1, t2, t3, t4) indicated in Table 9, where applicable. Table 9 Time-
36、current operating characteristics Delete the following line in Table 9: mInbCold at5 t t6Tripping Delete footnote b. 60934 Amend. 2 IEC:2013 5 8.6 Electrical performance Add at the end of the title: “and behaviour at rated short-circuit capacity“. Table 11 Test conditions for electrical performance
37、for CBEs intended for general use, including inductive circuits Replace the existing section 3 modified by Amendment 1 by a new section 3.1, and add a footnote c, as follows: Add, after the new section 3.1, a new section 3.2 and a footnote d, as follows: 3.2dTest verifying the suitability for use in
38、 IT systems M, S, R, J 2 300 to 360 105 % of the rated voltage upper value 6 In0,93 to 0,98 Icn 6 In: 1,2 Ii0,93 to 0,98 dOnly relevant for CBEs marked with e.g. 230/400, 120/240, Table 12 Test conditions for electrical performance of CBEs used in essentially resistive circuits only (see Clause 6, i
39、tem d) Replace the existing section 3 by a new section 3.1, and add a footnotec, as follows: 3.1 Rated short-circuit capacity IcnM, S, R, J 3 300 to 360 1,05 Ue6 Inc4 Inc6 In6 Inthe samples shall not show: undue wear; discrepancy between the positions of the moving contacts and the corresponding pos
40、ition of the indicating device; 3.2dTest verifying the suitability for use in IT systems M, S, R, J 2 300 to 360 105 % of the rated voltage upper value 6 In0,95 to 1 - - Icn 6 In: 1,2 Ii0,95 to 1 - - dOnly relevant for CBEs marked with e.g. 230/400, 120/240, etc. 60934 Amend. 2 IEC:2013 7 damage of
41、the integral enclosure, permitting access to live parts by the test finger (see 9.6); loosening of electrical or mechanical connections; seepage of sealing compound, if any. Moreover the CBE shall withstand the dielectric strength test according to 9.7.3 at a voltage of 0,75 times the value prescrib
42、ed in 9.7.5, without the previous humidity treatment of 9.7.1 and the CBE shall trip within the time t2, when a current of 2,2 In is passed through all poles, starting from cold. Following the test at Icn= 6 Inthe samples shall not show damage of the integral enclosure, if any, permitting access to
43、live parts by the test finger (see 9.6); the CBE may be inoperable after the first or second operation. If the result of the first operation is such that the CBE is rendered inoperable the remaining operation need not be performed. Moreover, the CBE shall withstand the dielectric strength test accor
44、ding to 9.7.3 at a voltage of 0,75 times the value prescribed in 9.7.5, without the previous humidity treatment of 9.7.1. Annex A Time-current zone Figures A.1 to A.4 Delete, in the key to the figures: m = factor, to be stated by the manufacturer (see table 5) Replace the following existing text: t1
45、. t6= times, to be stated by the manufacturer by the following: t1. t4= times, to be stated by the manufacturer Figure A.1 Thermal mode only Delete markings: t5and t6 Replace, on the x-axis, the description “m x In” by the following: “In” 8 60934 Amend. 2 IEC:2013 Figure A.4 Hydraulic-magnetic mode
46、Delete markings: t5and t6 Annex C Test sequences and number of samples to be submitted for certification purposes C.1 Test sequences Replace the first sentence as follows: The tests are made according to Table C.1 of this annex, where the tests in each sequence, A to E, are carried out in the order
47、indicated. Add the following sentence: If values for Inc1and/or Inc2are assigned by the manufacturer the test sequences F and/or G are carried out in addition. Table C.1 Test sequences In test sequence E, first column, delete the following text introduced by Amendment 1: (optional, except for CBEs s
48、uitable for isolation) In test sequence E, second column, delete the asterisk at the end of “9.11.1.3” and add the following text after “9.11.1.3“: L.9.7.7.2 In test sequence E, third column, add the following: Verification of leakage currents, if applicable. In test sequence F, first column, delete
49、 the following text: (optional) In test sequence G, first column, delete the following text: (optional, except for CBEs suitable for isolation) In test sequence G, second column, delete the asterisk at the end of “9.11.1.3” and add the following text after “9.11.1.3“: L.9.7.7.2 In test sequence G, third column, add the following: Verification of leakage currents, if applicable 60934 Amend.
