IEC 61643-11-2011 Low-voltage surge protective devices - Part 11 Surge protective devices connected to low-voltage power distribution systems - Requirements and.pdf

1、 IEC 61643-11 Edition 1.0 2011-03 INTERNATIONAL STANDARD NORME INTERNATIONALE Low-voltage surge protective devices Part 11: Surge protective devices connected to low-voltage power systems Requirements and test methods Parafoudres basse tension Partie 11: Parafoudres connects aux systmes basse tensio

2、n Exigences et mthodes dessai IEC 61643-11:2011 colour inside THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2011 IEC, Geneva, Switzerland 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 mechanic

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16、 ou si vous avez des questions, visitez le FAQ du Service clients ou contactez-nous: Email: csciec.ch Tl.: +41 22 919 02 11 Fax: +41 22 919 03 00 IEC 61643-11 Edition 1.0 2011-03 INTERNATIONAL STANDARD NORME INTERNATIONALE Low-voltage surge protective devices Part 11: Surge protective devices connec

17、ted to low-voltage power systems Requirements and test methods Parafoudres basse tension Partie 11: Parafoudres connects aux systmes basse tension Exigences et mthodes dessai INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE XD ICS 29.240; 29.240.10 PRICE CODE CODE

18、 PRIX ISBN 978-2-88912-350-6 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale colour inside 2 61643-11 IEC:2011 CONTENTS FOREWORD . 7 INTRODUCTION . 9 1 Scope . 10 2 Normative references . 10 3 Terms, definitions and

19、abbreviations 10 3.1 Terms and definitions 11 3.2 Abbreviations 16 4 Service conditions 18 4.1 Frequency . 18 4.2 Voltage 18 4.3 Air pressure and altitude . 18 4.4 Temperatures 18 4.5 Humidity 18 5 Classification 18 5.1 Number of ports 18 5.1.1 One . 18 5.1.2 Two . 18 5.2 SPD design . 18 5.2.1 Volta

20、ge switching 18 5.2.2 Voltage limiting 18 5.2.3 Combination 18 5.3 Class I, II and III tests . 18 5.4 Location 19 5.4.1 Indoor 19 5.4.2 Outdoor . 19 5.5 Accessibility 19 5.5.1 Accessible . 19 5.5.2 Inaccessible 19 5.6 Mounting method . 19 5.6.1 Fixed . 19 5.6.2 Portable . 19 5.7 Disconnectors (inclu

21、ding overcurrent protection) . 19 5.7.1 Location 19 5.7.2 Protection functions . 19 5.8 Degree of protection provided by enclosures . 19 5.9 Temperature and humidity range . 20 5.9.1 Normal 20 5.9.2 Extended . 20 5.10 Power system 20 5.10.1 AC between 47 Hz and 63 Hz 20 5.10.2 AC other than the rang

22、e of 47 Hz to 63 Hz 20 5.11 Multipole SPD . 20 5.12 SPD failure behaviour . 20 5.12.1 open circuit (standard type SPD) . 20 5.12.2 short-circuit (short-circuiting type SPD) . 20 61643-11 IEC:2011 3 6 Preferred values for SPD 20 6.1 Preferred values of impulse discharge current I impfor class I tests

23、 20 6.2 Preferred values of nominal discharge current for class II tests I n20 6.3 Preferred values of open-circuit voltage for class III tests U oc. 20 6.4 Preferred values of voltage protection level U p20 6.5 Preferred values of r.m.s. maximum continuous operating voltage U c20 7 Requirements . 2

24、1 7.1 General requirements 21 7.1.1 Identification 21 7.1.2 Marking . 22 7.2 Electrical requirements 22 7.2.1 Protection against direct contact 22 7.2.2 Residual current I PE23 7.2.3 Voltage protection level U p23 7.2.4 Operating duty . 23 7.2.5 Disconnectors and status indicators 23 7.2.6 Insulatio

25、n resistance 24 7.2.7 Dielectric withstand . 24 7.2.8 Behaviour under Temporary Overvoltages . 24 7.3 Mechanical requirements . 25 7.3.1 Mounting . 25 7.3.2 Screws, current carrying parts and connections . 25 7.3.3 External connections . 25 7.3.4 Air clearances and creepage distances 27 7.3.5 Mechan

26、ical strength 27 7.4 Environmental and material requirements 27 7.4.1 Protection provided by enclosure (IP code) 27 7.4.2 Heat resistance . 27 7.4.3 Fire resistance . 27 7.4.4 Tracking resistance . 27 7.4.5 Electromagnetic compatibility 28 7.5 Additional requirements for specific SPD designs 28 7.5.

27、1 Two port SPDs and one port SPDs with separate input/output terminals . 28 7.5.2 Environmental tests for outdoor SPDs . 28 7.5.3 SPDs with separate isolated circuits 28 7.5.4 Short-circuiting type SPDs . 29 7.6 Additional requirements as may be declared by the manufacturer . 29 7.6.1 One-port and t

28、wo-port SPDs 29 7.6.2 Two port SPDs only . 29 8 Type tests 29 8.1 General testing procedures . 30 8.1.1 Impulse discharge current used for class I additional duty test 36 8.1.2 Current impulse used for class I and class II residual voltage and operating duty tests . 36 8.1.3 Voltage impulse used for

29、 class I and II sparkover tests 37 8.1.4 Combination wave used for class III tests 37 8.2 Indelibility of markings . 40 8.3 Electrical tests . 40 4 61643-11 IEC:2011 8.3.1 Protection against direct contact 40 8.3.2 Residual current I PE40 8.3.3 Measured limiting voltage 41 8.3.4 Operating duty test

30、44 8.3.5 Disconnectors and safety performance of overstressed SPDs . 48 8.3.6 Insulation resistance 54 8.3.7 Dielectric withstand . 55 8.3.8 Behaviour under Temporary Overvoltages (TOVs) . 56 8.4 Mechanical tests . 60 8.4.1 Reliability of screws, current-carrying parts and connections . 60 8.4.2 Ter

31、minals for external conductors 61 8.4.3 Verification of air clearances and creepage distances 65 8.4.4 Mechanical strength 68 8.5 Environmental and material tests. 72 8.5.1 Resistance to ingress of solid objects and to harmful ingress of water . 72 8.5.2 Heat resistance . 72 8.5.3 Ball pressure test

32、 73 8.5.4 Resistance to abnormal heat and fire. 74 8.5.5 Tracking resistance . 75 8.6 Additional tests for specific SPD designs . 75 8.6.1 Test for two-port SPDs and one-port SPDs with separate input/output terminals . 75 8.6.2 Environmental tests for outdoor SPDs . 78 8.6.3 SPDs with separate isola

33、ted circuits 78 8.6.4 Short-circuiting type SPDs . 78 8.7 Additional tests for specific performance if declared by the manufacturer 78 8.7.1 Total discharge current test for multipole SPDs . 78 8.7.2 Test to determine the voltage drop 79 8.7.3 Load-side surge withstand capability . 79 8.7.4 Measurem

34、ent of voltage rate of rise du/dt 80 9 Routine and acceptance tests . 80 9.1 Routine tests . 80 9.2 Acceptance tests . 80 Annex A (normative) Reference test voltages for SPDs U REF. 81 Annex B (normative) TOV Ratings . 86 Annex C (normative) Tests to determine the presence of a switching component a

35、nd the magnitude of the follow current . 89 Annex D (normative) Reduced test procedures 91 Annex E (informative) Alternative circuits for testing SPDs under TOVs caused by faults in the high (medium) voltage system . 93 Annex F (informative) Environmental tests for outdoor SPDs . 94 Annex G (normati

36、ve) Temperature rise limits . 96 Bibliography 97 Figure 1 Metallic screen test set-up . 31 Figure 2 Example of a decoupling network for single-phase power . 39 Figure 3 Example of a decoupling network for three-phase power 39 Figure 4 Alternate test for the measured limiting voltage 39 61643-11 IEC:

37、2011 5 Figure 5 Flow chart of testing to check the voltage protection level U p. 42 Figure 6 Flow chart of the operating duty test 45 Figure 7 Test set-up for operating duty test 46 Figure 8 Operating duty test timing diagram for test classes I and II 47 Figure 9 Additional duty test timing diagram

38、for test class I 48 Figure 10 Operating duty test timing diagram for test class III 48 Figure 11 Test circuit for SPD with I filower than the declared short-circuit rating. 52 Figure 12 Test circuit for SPDs failure mode simulation 53 Figure 13 Timing diagram for SPDs failure mode simulation 53 Figu

39、re 14 Example of a test circuit to perform the test under TOVs caused by faults in the low voltage system 57 Figure 15 Timing diagram for the test under TOVs caused by faults in the low voltage system 57 Figure 16 Example of circuit for testing SPDs for use in TT systems under TOVs caused by faults

40、in high (medium) voltage system 59 Figure 17 Timing diagram for use in testing SPDs under TOVs caused by faults in the high (medium) voltage system using circuit of Figure 16 . 60 Figure 18 Test apparatus for impact test 69 Figure 19 Striking element of the pendulum hammer 70 Figure 20 Ball thrust t

41、ester . 73 Figure 21 Loading rod for ball thrust tester. 73 Figure 22 Examples for appropriate test circuits of the load side short-circuit test(s) . 77 Figure E.1 Examples of a three-phase and single-phase circuit for use in testing SPDs under TOVs caused by faults in the high (medium) voltage syst

42、em . 93 Table 1 List of Abbreviations 17 Table 2 Class I, II and III tests . 19 Table 3 Type test requirements for SPDs . 32 Table 4 Common pass criteria for type tests 34 Table 5 Cross reference for pass criteria versus type tests 35 Table 6 Preferred parameters for class I test . 36 Table 7 Tests

43、to be performed to determine the measured limiting voltage 43 Table 8 Prospective short-circuit current and power factor . 50 Table 9 Dielectric withstand . 55 Table 10 Screw thread diameters and applied torques . 61 Table 11 Cross-sections of copper conductors for screw-type or screwless terminals

44、62 Table 12 Pulling forces (screw terminals) . 63 Table 13 Conductor dimensions . 63 Table 14 Pulling forces (screwless terminals) 64 Table 15 Air clearances for SPDs 66 Table 16 Creepage distances for SPDs 67 Table 17 Relationship between material groups and classifications 68 Table 18 Fall distanc

45、es for impact requirements 71 Table 19 Test conductors for rated load current test 75 6 61643-11 IEC:2011 Table 20 Current factor k for overload behaviour . 76 Table 21 Tolerances for proportional surge currents 79 Table A.1 Reference test voltage values 82 Table B.1 TOV test values for systems comp

46、lying with IEC 60364 series . 86 Table B.2 TOV test parameters for North American systems 87 Table B.3 TOV test parameters for Japanese systems . 88 Table D.1 Reduced test procedure for SPDs complying with IEC 61643-1:2005 . 92 Table G.1 Temperature-rise limits 96 61643-11 IEC:2011 7 INTERNATIONAL E

47、LECTROTECHNICAL COMMISSION _ LOW-VOLTAGE SURGE PROTECTIVE DEVICES Part 11: Surge protective devices connected to low-voltage power systems Requirements and test methods FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all nati

48、onal electrotechnical committees (IEC National Committees). The object of 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, IEC publishes International Standards, Technica

49、l Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). 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 n