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1、 IEC/TR 60755 Edition 2.0 2008-01 TECHNICAL REPORT RAPPORT TECHNIQUE General requirements for residual current operated protective devices Exigences gnrales pour les dispositifs de protection courant diffrentiel rsiduel IEC/TR 60755:2008 Copyright International Electrotechnical Commission Provided b
2、y IHS under license with IECLicensee=Boeing Co/5910770001 Not for Resale, 07/27/2008 18:30:41 MDTNo reproduction or networking permitted without license from IHS -,-,- THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2008 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no
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17、echnical Commission Provided by IHS under license with IECLicensee=Boeing Co/5910770001 Not for Resale, 07/27/2008 18:30:41 MDTNo reproduction or networking permitted without license from IHS -,-,- IEC/TR 60755 Edition 2.0 2008-01 TECHNICAL REPORT RAPPORT TECHNIQUE General requirements for residual
18、current operated protective devices Exigences gnrales pour les dispositifs de protection courant diffrentiel rsiduel INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE W ICS : 29.120.50 PRICE CODE CODE PRIX ISBN 2-8318-9577-4 Copyright International Electrotechnical
19、 Commission Provided by IHS under license with IECLicensee=Boeing Co/5910770001 Not for Resale, 07/27/2008 18:30:41 MDTNo reproduction or networking permitted without license from IHS -,-,- 2 TR 60755 IEC:2008 CONTENTS FOREWORD.5 INTRODUCTION.7 1 Scope.8 2 Normative references .9 3 Terms and definit
20、ions .9 3.1 Definitions relating to currents flowing from live parts to earth.9 3.2 Definitions relating to the energization of a residual current device .10 3.3 Definitions relating to the operation and to the functions of the residual current device .10 3.4 Definitions relating to values and range
21、s of energizing quantities12 3.5 Definitions relating to values and ranges of influencing quantities .13 3.6 Conditions of operation .14 3.7 Test.15 3.8 short-circuit protective device (SCPD) .15 4 Classification15 4.1 Classification according to the method of operation.15 4.2 Classification accordi
22、ng to the type of installation15 4.3 Classification according to the number of poles and current paths.15 4.4 Classification according to overcurrent protection16 4.5 Classification according to the possibility of adjusting the residual operating current 16 4.6 Classification according to resistance
23、 against unwanted tripping due to current surges caused by impulse voltages .16 4.7 Classification of residual current devices according to their operating characteristics in case of residual currents with d.c. components 16 4.8 Classification according to the range of ambient air temperature.16 4.9
24、 Classification according to time-delay in presence of a residual current exceeding In16 4.10 Classification according to the method of construction.16 5 Characteristics of residual current devices .16 5.1 Summary of characteristics .16 5.2 Characteristics common to all residual current devices17 5.
25、3 Characteristics specific to residual current devices without integral overcurrent protection (see 4.4a) and to residual current devices with integral overload protection only (see 4.4c)19 5.4 Preferred or standard values .19 6 Marking and other product information23 7 Standard conditions for opera
26、tion in service and for installation24 7.1 Preferred ranges of application, reference values of influencing quantities/factors and their associated test tolerances.24 7.2 Limits of extreme range of temperature during storage and transportation.25 8 Conditions for construction and operation.25 8.1 In
27、formation and marking25 8.2 Mechanical design.26 8.3 Operating characteristics.27 Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=Boeing Co/5910770001 Not for Resale, 07/27/2008 18:30:41 MDTNo reproduction or networking permitted without license fro
28、m IHS -,-,- TR 60755 IEC:2008 3 8.4 Test device29 8.5 Temperature rise.29 8.6 Resistance to humidity 30 8.7 Dielectric properties 30 8.8 Limiting value of non-operation in case of balanced load and unbalanced load.30 8.9 EMC compliance and unwanted tripping 30 8.10 Behaviour of residual current devi
29、ces in case of overcurrent conditions 30 8.11 Resistance of the insulation against impulse voltages .30 8.12 Mechanical and electrical endurance.30 8.13 Resistance to mechanical shock31 8.14 Reliability 31 8.15 Condition for reclosing a reset residual current device (3.3.13) .31 8.16 Protection agai
30、nst electric shock .31 8.17 Resistance to heat 31 8.18 Resistance to abnormal heat and to fire 31 8.19 Behaviour of residual current device within ambient temperature range.31 8.20 Behaviour of residual current device after exposure to extreme temperatures during storage and transportation32 9 Guida
31、nce for type tests.32 Annex A (informative) .33 Annex B36 Bibliography38 Figure A.1 Diagram for all the short-circuit tests .34 Figure A.2 Detail of impedance Z or Z135 Figure B.1 Possible load and fault currents according to the different electronic circuits36 Table 1 Standard values of maximum bre
32、ak time of non-time-delay type RCDs for a.c. residual current21 Table 2 Standard values of maximum break time of non-time-delay type RCDs for half-wave pulsating d.c. residual current .21 Table 3 Standard values of maximum break time of non-time-delay type RCDs for residual direct currents which res
33、ult from rectifying circuits and/or smooth d.c. residual current21 Table 4 Acceptable alternative standard values of maximum break times for RCD with a rated residual current of 6mA and non-time-delay type intended to be used in bi-phase system 120V with middle point .21 Table 5 Standard values of b
34、reak time for a.c. residual current for time-delay type residual current devices22 Table 6 Standard values of break time for pulsating d.c. residual current for time- delay type residual current devices.22 Table 7 Standard values of break time for smooth d.c. residual current for time-delay type res
35、idual current devices 23 Table 8 Tripping current ranges for type B RCDs at frequencies which differ from the rated frequency 50/60 Hz23 Table 9 Values of influencing quantities.25 Table 10 Tripping current limits27 Copyright International Electrotechnical Commission Provided by IHS under license wi
36、th IECLicensee=Boeing Co/5910770001 Not for Resale, 07/27/2008 18:30:41 MDTNo reproduction or networking permitted without license from IHS -,-,- 4 TR 60755 IEC:2008 Table 11 Tripping current limits27 Table 12 Tripping current limits28 Table 13 List of minimum requirements to be checked or tested 32
37、 Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=Boeing Co/5910770001 Not for Resale, 07/27/2008 18:30:41 MDTNo reproduction or networking permitted without license from IHS -,-,- TR 60755 IEC:2008 5 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ GENER
38、AL REQUIREMENTS FOR RESIDUAL CURRENT OPERATED PROTECTIVE DEVICES FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote internationa
39、l co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter refer
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47、ublication 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 elements of this IEC P
48、ublication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. The main task of IEC technical committees is to prepare International Standards. However, a technical committee may propose the publication of a technical report when it has collected data of a different kind from that which is normally published as an International Standard, for example “state of the art”. IEC 60755, which is a technical report,