IEC TR 6271 0 Edition 1 0 201 5 05 TECHNICAL REPORT Residual current devices (RCDs) associated with additional function(s) IE C T R 6 2 7 1 0 2 0 1 5 0 5 (e n ) ® Copyright International Electrotechni[.]
I E C TR 62 ® Edition 201 5-05 TE C H N I C AL RE P ORT IEC TR 6271 0:201 5-05(en) Re s i d u al cu rren t d e vi ces (RC D s ) ass oci ated wi th ad d i ti on al fu n cti on (s ) T H I S P U B L I C AT I O N I S C O P YRI G H T P RO T E C T E D C o p yri g h t © I E C , G e n e v a , S wi tz e rl a n d All rights reserved Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either IEC or IEC's member National Committee in the country of the requester If you have any questions about I EC copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or your local I EC member National Committee for further information IEC Central Office 3, rue de Varembé CH-1 21 Geneva 20 Switzerland Tel.: +41 22 91 02 1 Fax: +41 22 91 03 00 info@iec.ch www.iec.ch Ab ou t th e I E C The I nternational Electrotechnical Commission (I EC) is the leading global organization that prepares and publishes I nternational Standards for all electrical, electronic and related technologies Ab o u t I E C p u b l i ca ti o n s The technical content of IEC publications is kept under constant review by the IEC Please make sure that you have the latest edition, a corrigenda or an amendment might have been published I E C Catal og u e - webstore i ec ch /catal og u e The stand-alone application for consulting the entire bibliographical information on IEC International Standards, Technical Specifications, Technical Reports and other documents Available for PC, Mac OS, Android Tablets and iPad I E C pu bl i cati on s s earch - www i ec ch /search pu b The advanced search enables to find IEC publications by a variety of criteria (reference number, text, technical committee,…) It also gives information on projects, replaced and withdrawn publications E l ectroped i a - www el ectroped i a org The world's leading online dictionary of electronic and electrical terms containing more than 30 000 terms and definitions in English and French, with equivalent terms in additional languages Also known as the International Electrotechnical Vocabulary (IEV) online I E C G l os sary - s td i ec ch /g l oss ary More than 60 000 electrotechnical terminology entries in English and French extracted from the Terms and Definitions clause of IEC publications issued since 2002 Some entries have been collected from earlier publications of IEC TC 37, 77, 86 and CISPR I E C J u st Pu bl i s h ed - webstore i ec ch /j u stpu bl i sh ed Stay up to date on all new IEC publications Just Published details all new publications released Available online and also once a month by email I E C C u stom er S ervi ce C en tre - webstore i ec ch /csc If you wish to give us your feedback on this publication or need further assistance, please contact the Customer Service Centre: csc@iec.ch I E C TR 62 ® Edition 201 5-05 TE C H N I C AL RE P ORT Res i d u al cu rren t d e vi ces (RC D s ) ass oci ated wi th ad d i ti on al fu n cti on (s ) INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 29.200 ISBN 978-2-8322-2660-5 Warn i n g ! M ake su re th a t you obtai n ed th i s pu bl i cati on from an au th ori zed d i s tri bu tor ® Registered trademark of the International Electrotechnical Commission –2– I EC TR 6271 0:201 © I EC 201 CONTENTS FOREWORD I NTRODUCTI ON Scope Norm ative references Term s and definitions Classification according to the association of a RCD with additional function(s) General According to the type of construction According to the interface between a RCD and additional function(s) Characteristics Marking and other product information I nstructions and operation for RCDs with integrated additional function(s) according to 4.2 a) I nstructions and operation for a non integrated additional function according to b) Standard conditions for operation in service and for installation Requirements for construction and operation 1 General 1 Mechanical requirements Electrical compatibility Protection against electric shock Dielectric properties, isolating capability and insulation coordination Clearances and creepage distances Screws, current-carrying parts and connections 8 Terminals for external conductors Tem perature rise Mechanical and electrical endurance 1 Performance at short-circuit currents Resistance to mechanical shock and im pact Resistance to heat, to abnorm al temperature and to fire Test device Behaviour of RCDs in the case of overcurrents in the main circuit Behaviour of RCDs in the case of current surges caused by im pulse voltages Behaviour of RCDs in the case of sinusoidal residual currents and in case of residual currents comprising a d.c com ponent 8 Reliability Electromagnetic com patibility (EMC) 20 Operating characteristics 20 Operating characteristics of the RCD 20 I nfluence of the additional function(s) on the perform ance of the RCD with different conditions of suppl y voltage Tests General The additional function is integrated within the RCD according to 4.2 a) The additional function is not integrated within a declared RCD according to 2b) whose compliance to the relevant RCD standard is not yet tested I EC TR 6271 0: 201 © I EC 201 –3– The additional function is not integrated within a declared RCD according to whose com pliance to the relevant RCD standard is alread y tested Testing procedure General I m pairm ent identification 20 I m pairm ent assessment 21 Verification of the influence of the additional function(s) on the performance of the RCD at different states of suppl y voltage 23 Docum entation 24 Annex A (inform ative) Additional requirements and tests for RCDs consisting of a RCD and a non integrated additional function unit designed for assem bl y on site 25 A General 25 A Scope 25 A Term s and definitions 25 A Marking and other product inform ation 25 A 4.1 Manufacturer's nam e or tradem ark 25 A 4.2 Marking 25 A 4.3 I nstructions for assembl y and operation 26 A Constructional requirem ents 26 A 5.1 General 26 A 5.2 Degree of protection 26 A 5.3 Mechanical requirements 26 A 5.4 Electrical compatibility 27 A Type tests and verifications 27 A 6.1 Tests on RCDs 27 A 6.2 Tests on non integrated additional function unit to be assem bled on site 27 A 6.3 Tests on assem bled RCDs and non integrated additional function unit 27 A 6.4 Verification of m arking and constructional requirements 27 Bibliograph y 28 Table – List of basic tests to be considered, according to the interface between RCDs and additional function(s), during the assessm ent –4– I EC TR 6271 0:201 © I EC 201 INTERNATI ONAL ELECTROTECHNI CAL COMMISSI ON RE S I D U AL C U RRE N T D E VI C E S ( RC D s ) AS S O C I AT E D WI T H AD D I T I O N AL F U N C T I O N ( S ) FOREWORD ) The I nternati on al Electrotech ni cal Comm ission (I EC) is a worl d wid e organization for stand ardization com prisin g all nati on al el ectrotechnical comm ittees (I EC Nation al Comm ittees) The object of I EC is to prom ote internati onal co-operation on all qu estions concerni ng standardi zati on in the electrical and electronic fields To this 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Publicati ons have the form of recom m endations for i ntern ational use an d are accepted by I EC N ational Com m ittees in that sense While all reasonable efforts are m ade to ensure that the tech nical content of I EC Publications is accurate, I EC cann ot be held responsibl e for the way in which they are used or for an y m isinterpretation by an y en d u ser 4) I n ord er to prom ote internati onal u niform ity, I EC Nation al Com m ittees undertake to apply I EC Publ ications transparentl y to th e m axim um extent possibl e in thei r n ational an d regi onal pu blicati ons Any di vergence between an y I EC Publ ication and the correspondi ng n ational or regi on al pu blicati on shall be clearl y in dicated in the latter 5) I EC itself d oes n ot provid e an y attestati on of conform ity I ndepend ent certificati on bod ies provi de conform ity assessm ent services an d, in som e areas, access to I EC m arks of conform ity I EC is not responsi ble for an y services carri ed out by ind ependent certification bodi es 6) All users shou ld ensure that th ey h ave the l atest editi on of thi s publicati on 7) No liability shall attach to I EC or its directors, em ployees, servants or ag ents includ ing i n divi du al experts and m em bers of its tech nical com m ittees and I EC Nati onal Com m ittees for an y person al i nju ry, property dam ag e or other dam age of an y nature whatsoever, wheth er di rect or indirect, or for costs (includi ng leg al fees) an d expenses arisi ng out of th e publ ication, use of, or rel ian ce upon, this I EC Pu blicati on or an y other I EC Publications 8) Attention is drawn to the Norm ative references cited i n this publ ication Use of the referenced publications is indispensable for the correct appl icati on of this publication 9) Attention is drawn to th e possibility that som e of the elem ents of this I EC Publication m ay be the subject of patent rig hts I EC shall not be held responsibl e for identifyi ng any or al l such patent ri ghts The main task of I EC technical comm ittees is to prepare I nternational Standards H owever, a technical comm ittee may propose the publication of a technical report when it has collected data of a different kind from that which is norm ally published as an I nternational Standard, for example "state of the art" I EC TR 6271 0, which is a Technical Report, has been prepared by subcommittee 23E: Circuitbreakers and sim ilar eq uipment for household use, of I EC technical committee 23: Electrical accessories The text of this standard is based on the following docum ents: Enqui ry draft Report on votin g 23E/875/DTR 23E/900/RVC Full inform ation on the voting for the approval of this technical report can be found in the report on voting indicated in the above table I EC TR 6271 0: 201 © I EC 201 –5– This publication has been drafted in accordance with the I SO/I EC Directives, Part I n this Technical Report, the following print types are used: – com pliance statements: in ita lic typ e The comm ittee has decided that the contents of this publication will remain unchanged until the stability date indicated on the I EC 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 edition, or amended A bilingual version of this publication m ay be issued at a later date –6– I EC TR 6271 0:201 © I EC 201 I NTRODUCTI ON This Technical Report (TR) introduces inform ation allowing m anufacturers to introduce additional function(s) associated with Residual current devices (RCD) This TR is also relevant for technical committees in charge of drafting an I nternational Standard for additional function(s); for this purpose, requirem ents and tests have been introduced I t would also be of benefit to laboratories having difficulties in testing RCDs associated with an additional function This TR does not cover the additional function(s) itself (this is the purpose of an I nternational Standard covering the additional function(s)), nor the RCD function and characteristics (this is the purpose of an RCD I nternational Standard) I t is lim ited to checking that the additional function(s) not im pair an y function of the RCD in case there is no I nternational Standard for the additional function(s) for household and sim ilar uses Where there is a relevant I nternational Standard for household and sim ilar uses for the additional function(s), then it is used This m eans that the assembly of th e RCD plus the additional function(s) behave correctl y according to the referred standards This Technical Report is drafted according to the following basic principles: – I n order not to restrict innovation, it is drafted independentl y of the additional function(s) and is thus applicable wh atever the additional function(s) are NOTE I t is not possible to list all possible existing an d futu re ad ditional function(s); som e exam ples are gi ven within the d efiniti ons – The verification is onl y limited to the assembl y and association of an RCD with one or several additional function(s), being integrated or not – The verification aims to show that the assembl y of one or several additional function(s) declared suitable to a specific protective device is safe and does not impair the basic characteristics of the RCD – Responsibility for the assembl y means that the additional function(s) and the RCD are intended to be from the same m anufacturer or to be affixed with the sam e tradem ark As a consequence, it is intended that the manufacturer or tradem ark owner declare with which protective devices the additional function(s) can be associated I EC TR 6271 0: 201 © I EC 201 –7– RE S I D U AL C U RRE N T D E VI C E S ( RC D s ) AS S O C I AT E D WI T H AD D I T I O N AL F U N C T I O N ( S ) S cop e This Technical Report (TR) provides information concerning the possible use of: – dedicated additional function(s) declared by a manufacturer as suitable for an assem bl y with declared RCDs compl ying with I EC standards for household and sim ilar uses; – specific RCDs com pl yin g with I EC standards for household and sim ilar uses having integrated additional function(s) NOTE Th e term RCD is a g eneric term applied to a fam ily of products which open autom atically in response to a resid ual current at or exceedi n g the RCD’s rated resid ual operati ng current I∆ n This gen eri c term is often applied to the foll owi ng: – RCCB: Residu al cu rrent operated circuit-breaker without integ ral overcu rrent protection; – RCBO: Residu al current operated circuit-breaker with integral overcu rrent protection; – SRCD: Residu al current device with or with out overcurrent protection for socket-outl ets; – PRCD: Portable residu al current device without i nteg ral overcurrent protection This TR identifies the applicable testing procedure to determine the effect on the normal functioning of specific RCD(s) declared suitable with one or more additional function(s) integrated into or added to or assembled with this specific RCD This TR m ay also be used to draft additional requirem ents to standards for additional function(s) intended to be combined with RCDs for household and similar applications This TR provides a procedure based on an assessment in order to identify the necessary testing to dem onstrate compliance with the appropriate requirements I f the assessm ent of the additional function integrated in the RCDs concludes that the additional fu nction does not im pair the RCD, no additional test is required by this TR Where more than one additional function(s) can be sim ultaneousl y associated with one or several RCD(s), the possible com binations is checked by considering the m ost severe ones This TR does not apply: – to additional functions covered by a standard which explicitl y addresses the com bination with RCDs for household and similar applications; NOTE Exam ple of an additi onal device with i ndependent prod uct standard is au xili ary contacts accordi ng to I EC 6201 – to additional function(s) associated with RCDs for connection purposes; NOTE Exam ples of additi onal functi on(s) for connecti on purposes are nection devices between RCBOs and a circuit breakers – to locking devices N o rm a t i ve re fe re n c e s The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application For dated references, onl y the edition cited applies For undated references, the latest edition of the referenced document (including an y amendm ents) applies –8– I EC TR 60755, I EC TR 6271 0:201 © I EC 201 G e n e l re quire m e n ts for re s idua l curre n t o p e te d p rote ctive de vice s I EC 60898 (all parts), Ele ctrica l a cce sso rie s – Circuit-b re a ke rs for ove rcurre n t p rote ction fo r h o us e h o ld a n d s im ila r in sta lla tion s IEC 61 008 (all parts), Re s idua l curre n t op e te d circuit-b re a ke rs with o ut in te gra l ove rcurre n t pro te ction for h o use h old a n d sim ila r use s (RCCBs) IEC 61 009 (all parts), Re sidua l curre n t op e te d circuit-b re a ke rs with in te gra l ove rcurre n t pro te ction for h o use h old a n d sim ila r use s (RCBOs ) IEC 62423, Typ e F a n d typ e B re sidua l curre n t o p e te d circuit-b re a ke rs with a n d with out in te gra l ove rcurre n t p rote ctio n for h o use h o ld a n d s im ila r us e s Terms and definitions For the purposes of this docum ent, the terms and definitions given in I EC 60755, I EC 60898, I EC 61 008, I EC 61 009 and I EC 62423, as well as the following appl y 3.1 additional function feature, action, capability, or the like integrated or assembled with a declared RCD, and not required by the basic product standard Note to entry: Th e ad dition al function (s) can have a m echanical an d/or electrical i nterface with one or m ore parts of th e RCD Note to entry: Exam ples of additi on al functi on(s) are: autom atic reclosing d evices, protection agai nst too hi gh or too l ow voltage, rem ote-controlled m echanism , rem ote-controll ed trippin g, telem onitorin g, un dervol tage release, shunt release, resid ual cu rrent ind icator, lifetim e m onitori ng, installation m onitorin g, th erm al m onitori ng, self m onitorin g and test, data com m unication, sm oke detector as wel l as any com bin ations of these devices, etc 3.1 integrated additional function additional function com pletel y built into the RCD 3.1 non integrated additional function external additional function such as a module which can subsequentl y be built-in on site or can be added on by the m anufacturer Note to entry: The additi on al function(s) m ay i nfluence th e RCD vi a interfaces Note to entry: After assem bly of the external additi on al fu nction (s) with the RCD, the device becom es a construction al u nit 3.2 RCD residual current device mechanical switching device designed to m ake, carry and break currents under normal service conditions and to cause the opening of the contacts when the residual current attains a given value under specified conditions Note to entry: RCDs are covered by an applicabl e RCD prod uct standard and are used as a protecti ve device agai nst electric shock [SOU RCE: I EC 60050-442: 998, 442-05-02, m odified – The note has been modified ] – 16 – I EC TR 6271 0:201 © I EC 201 Case 6: The supply voltage is available as for normal use and the RCD is in the ON position When the suppl y voltage is switched OFF, the additional function shall not switch OFF the RCD unless it is the purpose of the additional function(s), for exam ple undervoltage release This requirem ent does not apply to RCDs according to classification of I EC 61 008-1 : 201 and 61 009-1 : 201 Case 7: The suppl y voltage is available as for normal use and the RCD is in the OFF position When the supply voltage is switched OFF, the RCD shall not be switched ON again due to an action of the additional function(s) Co m p lia n ce for th e s e diffe re n t ca se s is ch e cke d b y th e te sts o f Cla us e 9 Tests 9.1 General The declared RCD associated with the declared additional function(s) is considered as a single product during testing and evaluation This new single product is referred to as “equipment under test” in this clause After assem bl y or incorporation the new product can be either in the same box or enclosure or in several boxes or enclosures I n cases where different additional functions are designed to be integrated or built-in at the sam e tim e into or onto a RCD, not onl y the single additional function(s), but also all possible combinations shall be evaluated to determ ine the m ost severe case An anal ysis of documentation on how to use the additional function(s) (for example, how to enable and disable it or how to reach the isolating condition of the installation) is made in order to check: – compatibility of the standard conditions of operation in service: temperature, humidity, vibration, etc (see Clause 7); – the general conditions for assembling or incorporating a declared RCD with an additional function (see and 2); – standard electrical compatibility for operation in service: voltage, current, frequency, etc (see 3); – design and measures regarding the protection against electric shock (see 4) and insulation coordination (see 5): overvoltage category, pollution degree, I P, etc This first anal ysis can also include exploratory testing (see 5) Three different cases shall be considered (see to 4) 9.2 The additional function is integrated within the RCD according to 4.2 a) The following testing procedure shall be performed a) The “equipm ent under test” (RCD integrating the additional function(s)) is mounted and wired according to the m anufacturer’s instructions as in normal use when the additional function is in use b) I f the RCD has not been previously tested according to the relevant standard, the testing procedure of the relevant standard applicable to the RCD is then applied alone to the “equipm ent under test” (at this stage the additional function is disregarded and may be not activated) I EC TR 6271 0: 201 © I EC 201 – 17 – c) The testing procedure of the relevant standard applicable to the additional function(s), if an y, is then applied alone (at this stage, the RCD function may be disregarded) to the “equipment under test “ d) Afterwards, a testing procedure based on the relevant standard applicable to the RCD and to the im pairm ent assessment of shall be applied to the “equipm ent under test” with the additional function(s) activated, unless the standard covering the additional function(s) explicitl y addresses the com bination with RCDs for household and similar applications 9.3 The additional function is not integrated within a declared RCD according to 4.2b) whose compliance to the relevant RCD standard is not yet tested The following testing procedure shall be perform ed a) The RCD is assembled to the additional function(s) according to the m anufacturer’s instructions and then the RCD and its assembled function are m ounted and wired according to the m anufacturer’s instructions as in norm al use when the additional function is in use b) The testing procedure of the relevant standard applicable to the RCD is then applied alone to the “equipm ent under test” (at this stage the additional function is disregarded and m ay be not activated) c) The testing procedure of the relevant standard applicable to the additional function(s), if an y, is then applied alone (at this stage, the RCD function m ay be disregarded) to the “equipment under test” d) Afterwards, a testing procedure according to the relevant standard applicable to the RCD shall be applied either completel y or partiall y to the “equipm ent under test” with the additional function(s) activated, unless the standard covering the additional function(s) explicitl y addresses the combination with RCDs for household and similar applications Tests can be disregarded where it is obvious that the additional function has no influence on a given requirement or on a given operational characteristic of the standard of the RCD The minimum necessary testing to be applied is identified in 9.4 The additional function is not integrated within a declared RCD according to 4.3 whose compliance to the relevant RCD standard is already tested The following testing procedure shall be perform ed a) The RCD is assembled to the additional function(s) according to the manufacturer’s instructions and then the RCD and its assem bled function are m ounted and wired as in norm al use when the additional function is in use b) The testing procedure of the relevant standard applicable to the additional function(s), if an y, is then applied alone (at this stage, the RCD function m ay be disregarded) to the “equipm ent under test “; c) Afterwards, a testing procedure according to the relevant standard applicable to the RCD shall be applied either completel y or partiall y to the “equipment under test” with the additional function(s) activated, unless the standard covering the additional function(s) explicitl y addresses the combination with RCDs for household and sim ilar applications Tests can be disregarded where it is obvious that the additional function has no influence on a given requirement or on a given operational characteristic of the standard of the RCD The m inimum necessary testing to be applied is identified in 9.5 9.5.1 Testing procedure General An im pairment assessment shall be carried out by the m anufacturer of the equipm ent under test to determine if the assem bl y of an additional function with a declared RCD can impair the basic RCD protection offered by the RCD function with regard to the relevant RCD standard Tests can be disregarded where it is obvious that the additional function has no influence on a given requirement or on a given operational characteristic of the standard of the RCD – 18 – I EC TR 6271 0:201 © I EC 201 The list of tests given in Table is considered, line by line, during the im pairm ent assessment (see and 3) Some additional testing might be considered, if justified, during the evaluation for RCDs A final list of tests is then made to perform the tests (see 2) A RCD is basicall y a protective device opening in case of em ergency situation During the impairment assessm ent, particular attention shall be paid to assess if the additional function(s) could cause the RCD opening at an abnormal rate or lead to abnorm al ageing or reducing the endurance of the RCD Where a combination of m ore than one interface allows the operation of the RCD m echanism, several colum ns of Table shall be applicable Tabl e – L i s t o f b a s i c t e s t s t o b e c o n s i d e re d , b e twe e n RC D s a n d E xa m p l e : a d d i ti o n al Ad d i t i o n a l a c c o rd i n g Te s t fu n c t i o n ( s ) , te s ts wi th a c c o rd i n g t o t h e i n t e rfa c e d u ri n g t h e a s s e s s m e n t i n t e rfa c e t o c l a s s i fi c a t i o n fo r t e s t i n g Te s t a c c o rd i n g to s eq u en ce I E C 61 09 : 201 f a) X b) c) d) e) X X X X X X X X X X X I ndeli bility of m arking X X X X X Clearance and creepag e distan ces (external parts onl y) Mech anism Non -interchan geability 1 X Trip-free m echanism Xc Xc Xc Xc Xc Reli ability of screws, cu rrent-carryi ng parts and connections Xc Xc Xc Xc Xc Reli ability of term inals for external conductors Xc Xc Xc Xc Xc Protection ag ainst el ectric shock X X X X X Resistance to heat X X X X X Clearances an d creepage d istances (intern al parts) X X X X X Resistance to abn orm al heat and to fire X X X X X Diel ectric properties X X X X X Tem peratu re rise 20 X X X X X Resistance of i nsulati on agai nst im pulse voltages 22 X X X X X Reli ability at 40 °C 23 X X X X X Reli ability of electronic com ponents Xb X Xa Xa Xa Xa A C 1 (an d 2) Mechanical an d electrical endu rance D 1 2 (and 2) 9 Perform ance at reduced short-circuit currents (Verification of the RCBO after shortcircuit tests) C C Marking General B Te s t (o r i n s p e c ti o n ) Xa Xa Xa Xa Short-circuit test for verifying the suitability of RCBOs for use i n I T system s (Verification of the RCBO after shortcircuit tests) X X X X X Operatin g characteristics under resi dual operati ng conditions