1、Residual current operated circuit-breakers for household and similar usePart 2: Residual current devices (RCDs) VocabularyBS IEC 62873-2:2016BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06National forewordThis British Standard is the UK implementation of IEC 62873-2
2、:2016.The UK participation in its preparation was entrusted by TechnicalCommittee PEL/23, Electrical accessories, to Subcommittee PEL/23/1, Circuitbreakers and similar equipment for household use.A list of organizations represented on this committee can be obtained onrequest to its secretary.This pu
3、blication does not purport to include all the necessary provisions ofa contract. Users are responsible for its correct application. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 84508 6ICS 29.120.50Compliance with a British Standard cannot confer immuni
4、ty fromlegal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 September 2016.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS IEC 62873-2:2016IEC 62873-2 Edition 1.0 2016-09 INTERNATIONAL STANDA
5、RD Residual current operated circuit-breakers for household and similar use Part 2: Residual current devices (RCDs) Vocabulary INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 29.120.50 ISBN 978-2-8322-3612-3 Registered trademark of the International Electrotechnical Commission Warning! Make sure that
6、you obtained this publication from an authorized distributor. BS IEC 62873-2:2016 2 IEC 62873-2:2016 IEC 2016 CONTENTS FOREWORD . 3 INTRODUCTION . 5 1 Scope 6 2 Normative references. 6 3 Terms and definitions 6 3.1 Definitions relating to currents flowing from live parts to earth 9 3.2 Definitions r
7、elating to the energization of an RCD 10 3.3 Definitions relating to the operation and functions of an RCD . 11 3.4 Definitions relating to values and ranges of energizing quantities . 16 3.5 Definitions relating to arcing time . 19 3.6 Coordination between overcurrent protective devices in series .
8、 20 3.7 Definitions relating to values and ranges of influencing quantities . 21 3.8 Definitions relating to terminals . 22 3.9 Definitions relating to conditions of operation . 24 3.10 Definitions relating to constructional elements . 25 3.12 Definitions relating to insulation coordination . 27 Ann
9、ex A (informative) Glossary of symbols . 29 Bibliography . 30 BS IEC 62873-2:2016IEC 62873-2:2016 IEC 2016 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ RESIDUAL CURRENT OPERATED CIRCUIT-BREAKERS FOR HOUSEHOLD AND SIMILAR USE Part 2: Residual current devices (RCDs) Vocabulary FOREWORD 1) The Interna
10、tional 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 electro
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16、lications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity assessment services and, in some ar
17、eas, access to IEC marks of conformity. IEC is not responsible for any services carried out by independent certification bodies. 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 inclu
18、ding 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 relia
19、nce 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 el
20、ements 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 62873-2 has been prepared by subcommittee 23E: Circuit breakers and similar equipment for household use, of IEC technical co
21、mmittee 23: Electrical accessories. The text of this standard is based on the following documents: FDIS Report on voting 23E/963/FDIS 23E/981/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 b
22、een drafted in accordance with the ISO/IEC Directives, Part 2. BS IEC 62873-2:2016 4 IEC 62873-2:2016 IEC 2016 A list of all parts of the IEC 62873 series, published under the general title Residual current operated circuit-breakers for household and similar use can be found on the IEC website. The
23、committee has decided that the contents of this 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 e
24、dition, or amended. A bilingual version of this publication may be issued at a later date. BS IEC 62873-2:2016IEC 62873-2:2016 IEC 2016 5 INTRODUCTION This document is part of the series described in the outline document IEC 62873-1. BS IEC 62873-2:2016 6 IEC 62873-2:2016 IEC 2016 RESIDUAL CURRENT O
25、PERATED CIRCUIT-BREAKERS FOR HOUSEHOLD AND SIMILAR USE Part 2: Residual current devices (RCDs) Vocabulary 1 Scope This part of IEC 62873 provides the terms and definitions used in RCD product standards. 2 Normative references There are no normative references in this document. 3 Terms and definition
26、s For the purposes of this document, the following terms and definitions apply. Where the terms “voltage“ or “current“ are used, they imply r.m.s. values, unless otherwise specified. NOTE Reference to IEV definitions is also made when the term “device“ or “mechanical switching device“ has been repla
27、ced by the term “RCCB“, “RCBO“ or “RCD“. Alphabetical index of definitions Reference A ambient air temperature 3.7.6 applied voltage . 3.5.5 arcing contact . 3.10.2 arcing time 3.5.2 arcing time . 3.5.1 auxiliary circuit . 3.3.25 auxiliary contact 3.10.4 B break time 3.5.3 break time 3.3.15 breaking
28、 capacity 3.4.12 breaking current . 3.4.18 C circuit-breaker 3.3.3 clearance . 3.12.12 closed position . 3.3.19 closing operation 3.9.2 conditional residual short-circuit current 3.4.19 conditional short-circuit current . 3.4.15 conductive part . 3.10.10 control circuit 3.3.24 BS IEC 62873-2:2016IEC
29、 62873-2:2016 IEC 2016 7 Reference control contact 3.10.3 conventional non-tripping current . 3.6.3 conventional tripping current . 3.6.4 creepage distance 3.12.13 current delay angle . 3.1.4 D dependent manual operation 3.9.4 detection . 3.3.6 direct overcurrent release . 3.10.8 E earth fault curre
30、nt . 3.1.1 earth leakage current 3.1.2 energizing input-quantity . 3.2.2 energizing quantity . 3.2.1 evaluation . 3.3.7 exposed conductive part . 3.10.11 extreme range of an influencing quantity 3.7.5 F fuse 3.3.4 I I2t characteristic . 3.5.9 impulse withstand voltage . 3.12.4 independent manual ope
31、ration . 3.9.5 influencing quantity . 3.7.1 instantaneous tripping current . 3.6.5 insulation coordination 3.12.1 interruption . 3.3.8 inverse time-delay overcurrent release 3.10.7 isolating distance 3.12.11 isolation 3.12.10 J joule integral . 3.5.4 L limiting non-actuating time 3.3.16 limiting val
32、ue of the non-operating current in case of single phase overcurrent . 3.4.3 loss of supply . 3.4.20 lug terminal 3.8.7 BS IEC 62873-2:2016 8 IEC 62873-2:2016 IEC 2016 Reference M macro-environment . 3.12.6 main circuit . 3.3.23 main contact . 3.10.1 making capacity 3.4.11 maximum prospective peak cu
33、rrent 3.4.9 mechanical switching device . 3.3.2 micro-environment 3.12.7 minimum operating voltage . 3.4.21 O open position 3.3.20 opening operation 3.9.3 opening time . 3.4.22 operating cycle 3.9.6 operation 3.9.1 overcurrent . 3.4.2 overcurrent protected poles 3.3.21.1 overcurrent release . 3.10.6
34、 overcurrent unprotected pole . 3.3.21.2 overload current 3.4.4 overload release . 3.10.9 overvoltage . 3.12.3 overvoltage category. 3.12.5 P pillar terminal 3.8.3 pole 3.3.21 pollution . 3.12.8 pollution degree 3.12.9 power-frequency recovery voltage . 3.5.8 preferred range of an influencing quanti
35、ty 3.7.4 prospective current . 3.4.7 prospective peak current . 3.4.8 pulsating direct current . 3.1.3 R r.c. unit . 3.3.9 rated value . 3.4.1 RCD type A 3.3.27 RCD type AC 3.3.26 RCD type B 3.3.29 RCD type F . 3.3.28 RCD functionally dependent on line voltage . 3.3.13 RCD functionally independent o
36、f line voltage . 3.3.12 recovery voltage . 3.5.6 reference ambient air temperature . 3.7.7 reference conditions of influencing quantities . 3.7.3 reference value of an influencing quantity 3.7.2 release . 3.10.5 reset RCD 3.3.18 residual current . 3.2.3 residual current device 3.3.5 BS IEC 62873-2:2
37、016IEC 62873-2:2016 IEC 2016 9 Reference residual current . 3.2.6 residual current operated circuit-breaker with integral overcurrent protection 3.3.11 residual current operated circuit-breaker without integral overcurrent protection . 3.3.10 residual making and breaking capacity 3.4.13 residual non
38、-operating current. 3.2.5 residual operating current . 3.2.4 residual short-circuit withstand current 3.4.6 routine tests . 3.11.2 S saddle terminal . 3.8.6 screw terminal 3.8.4 screwless terminal 3.8.8 screw-type terminal . 3.8.2 selectivity-limit current 3.6.1 sequence of operations . 3.9.7 servic
39、e short-circuit breaking capacity . 3.4.16 short-circuit (making and breaking) capacity 3.4.10 short-circuit current . 3.4.5 short-circuit protective device . 3.4.14 smooth direct current 3.1.5 stud terminal . 3.8.5 switched neutral pole . 3.3.21.3 switching device . 3.3.1 T take-over current 3.6.2
40、tapping screw . 3.8.9 temporary overvoltage 3.4.23 terminal 3.8.1 test device 3.3.30 thread cutting tapping screw . 3.8.11 thread forming tapping screw 3.8.10 time-delay RCD 3.3.17 transient recovery voltage . 3.5.7 Reference trip-free RCD 3.3.14 type test . 3.11.1 U ultimate short-circuit breaking
41、capacity 3.4.17 uninterrupted duty . 3.9.8 uninterrupted neutral . 3.3.22 W working voltage 3.12.2 3.1 Definitions relating to currents flowing from live parts to earth 3.1.1 earth fault current current flowing to earth due to an insulation fault SOURCE: IEC 60050-442:1998, 442-01-23 BS IEC 62873-2:
42、2016 10 IEC 62873-2:2016 IEC 2016 3.1.2 earth leakage current current flowing from the live parts of the installation to earth, in the absence of an insulation fault SOURCE: IEC 60050-442:1998, 442-01-24 3.1.3 pulsating direct current current of pulsating wave form which assumes, in each period of t
43、he rated power frequency, the value 0 during one single interval of time, expressed in angular measure, of at least 180 Note 1 to entry: The adjective “pulsating“ is defined in IEC 60050-103:2009, 103-06-07. 3.1.4 current delay angle time, expressed in angular measure, by which the starting instant
44、of current conduction is delayed by phase control SOURCE: IEC 60050-442:1998, 442-05-42, modified In the definition, “the phase angle representing the time“ has been replaced by “time, expressed in angular measure,“. 3.1.5 smooth direct current direct current which is ripple free Note 1 to entry: A
45、current is considered to be ripple free when the coefficient of ripple is below 10 %. 3.2 Definitions relating to the energization of an RCD 3.2.1 energizing quantity electrical excitation quantity which, alone or in combination with other such quantities, is applied to an RCD to enable it to accomp
46、lish its function under specified conditions 3.2.2 energizing input-quantity energizing quantity by which the RCD is activated when it is applied under specified conditions Note 1 to entry: These conditions involve, for example, the energizing of certain auxiliary elements. 3.2.3 residual current Ir
47、.m.s. value of the vector sum of the instantaneous values of the currents flowing through the main circuit of the RCD SOURCE: IEC 60050-442:1998, 442-05-19, modified “of the instantaneous values” has been inserted. 3.2.4 residual operating current Invalue of residual current which causes the RCD to
48、operate under specified conditions SOURCE: IEC 60050-442:1998, 442-05-20 BS IEC 62873-2:2016IEC 62873-2:2016 IEC 2016 11 3.2.5 residual non-operating current Inovalue of residual current at which (and below which) the RCD does not operate under specified conditions SOURCE: IEC 60050-442:1998, 442-05
49、-21 3.2.6 residual current Itvalue of residual current which is the lower limit of the overcurrent instantaneous tripping range 3.3 Definitions relating to the operation and functions of an RCD 3.3.1 switching device device designed to make or break the current in one or more electric circuits SOURCE: IEC 60050-441:2000, 441-14-01 3.3.2 mechanical switching device switching device designed to close and open one or more electric circuits by means o
