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1、 IEC 61643-21 Edition 1.0 2008-04 INTERNATIONAL STANDARD NORME INTERNATIONALE Low voltage surge protective devices Part 21: Surge protective devices connected to telecommunications and signalling networks Performance requirements and testing methods Parafoudres basse tension Partie 21: Parafoudres c
2、onnects aux rseaux de signaux et de tlcommunications Prescriptions de fonctionnement et mthodes dessais IEC 61643-21 A1:2008 AMENDMENT 1 AMENDEMENT 1 Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 02:
3、43:51 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 part of this publication may be reproduced or utilized in any form or by any means, elec
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7、omit national de la CEI de votre pays de rsidence. IEC Central Office 3, rue de Varemb CH-1211 Geneva 20 Switzerland Email: inmailiec.ch Web: www.iec.ch About the IEC The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes International Stan
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17、commentaires sur cette publication 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 Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=Boeing Co/5910770001
18、Not for Resale, 07/25/2008 02:43:51 MDTNo reproduction or networking permitted without license from IHS -,-,- IEC 61643-21 Edition 1.0 2008-04 INTERNATIONAL STANDARD NORME INTERNATIONALE Low voltage surge protective devices Part 21: Surge protective devices connected to telecommunications and signal
19、ling networks Performance requirements and testing methods Parafoudres basse tension Partie 21: Parafoudres connects aux rseaux de signaux et de tlcommunications Prescriptions de fonctionnement et mthodes dessais INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE S
20、ICS 29.240; 29.240.10 PRICE CODE CODE PRIX ISBN 2-8318-9731-9 AMENDMENT 1 AMENDEMENT 1 Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 02:43:51 MDTNo reproduction or networking permitted without licens
21、e from IHS -,-,- 2 61643-21 Amend. 1 IEC:2008 FOREWORD This amendment has been prepared by subcommittee 37A: Low-voltage surge protective devices, of IEC technical committee 37: Surge arresters. The text of this amendment is based on the following documents: FDIS Report on voting 37A/200/FDIS 37A/20
22、1/RVD Full information on the voting for the approval of this amendment can be found in the report on voting indicated in the above table. The committee has decided that the contents of this amendment and the base publication will remain unchanged until the maintenance result date indicated on the I
23、EC web site 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. _ Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=Boe
24、ing Co/5910770001 Not for Resale, 07/25/2008 02:43:51 MDTNo reproduction or networking permitted without license from IHS -,-,- 61643-21 Amend. 1 IEC:2008 3 Page 3 CONTENTS Delete, on page 5, the title of Annexes B and C, and replace each by “Void”. Add the following new Annexes D and E: Annex D (in
25、formative) Measurement accuracy 17 Annex E (informative) Determination of let-through current (Ip) 18 Page 9 FOREWORD Delete the references to the annexes. Page 15 Replace the existing Figures 1a, 1b, 1c, 1d, 1e and 1f with the following new figures: SPD (V) X1 X2 IEC 549/08 Figure 1a Two-terminal S
26、PD SPD (V, I) X1 Y1 C IEC 550/08 SPD (V) X1 C X2 IEC 551/08 Figure 1b Three-terminal SPD Figure 1c Three-terminal SPD SPD (V, I) X1 Y1 Y2 X2 IEC 552/08 SPD (V, I) X1 Y1 C Y2 X2 IEC 553/08 Figure 1d Four-terminal SPD Figure 1e Five-terminal SPD Copyright International Electrotechnical Commission Prov
27、ided by IHS under license with IECLicensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 02:43:51 MDTNo reproduction or networking permitted without license from IHS -,-,- 4 61643-21 Amend. 1 IEC:2008 SPD (V, I ) X1 Y1 Ca Y2 X2 Xn Yn IEC 554/08 a The common terminal C may not be provided. Figure 1
28、f Multi-terminal SPD Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 02:43:51 MDTNo reproduction or networking permitted without license from IHS -,-,- 61643-21 Amend. 1 IEC:2008 5 Page 17 1.3 Use of t
29、his standard Replace the existing fifth paragraph by the following: Subclause 5.2.3 provides transmission tests that SPDs may need to conform to, depending on their communication and signalling application. Selection of the applicable transmission tests from 5.2.3 shall be made, based on the intende
30、d application of the SPDs. Table 1 provides general guidance on how to select the applicable transmission tests. Delete the last line of this subclause. Replace, on page 19, the existing Table 1 with the following new Table 1: Table 1 General SPD requirements Test series 4 Requirement Test Sub- clau
31、se Type of SPD SPD with only voltage- limiting function SPD with both voltage- limiting and current- limiting functions SPD with voltage- limiting function and linear component between its terminals SPD having both voltage-limiting and current-limiting functions with enhanced transmission capabiliti
32、es SPD having only voltage-limiting function but intended for use in extended range environment SPD having both voltage-limiting and current-limiting functions but intends for use in extended range environment 1 General test 6.1 Identification and documentation 6.1.1 A A A A A A Marking 6.1.2 A A A
33、A A A Transmission tests 6.2.3 Capacitance 6.2.3.1 A O O O A O Insertion loss 6.2.3.2 O A A A O A Return loss 6.2.3.3 O O O A O O Longitudinal balance 6.2.3.4 O O O A O O Bit Error Ratio (BER) 6.2.3.5 O O O O O O Near-end crosstalk (NEXT) 6.2.3.6 O O O A O O Mechanical tests 6.3 Terminals and connec
34、tors 6.3.1 A A A A A A General testing procedure 6.3.1.1 A A A A A A Terminals with screws 6.3.1.2 A A A A A A Screwless terminals 6.3.1.3 A A A A A A Insulating pierced connections 6.3.1.4 A A A A A A Pull-out-test on SPD terminals designed for single-core conductors 6.3.1.4.1A A A A A A Pull-out-t
35、est on SPD terminals designed for multi- core cables and cords 6.3.1.4.2A A A A A A Mechanical strength (mounting) 6.3.2 A A A A A A Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 02:43:51 MDTNo repro
36、duction or networking permitted without license from IHS -,-,- 6 61643-21 Amend. 1 IEC:2008 Table 1 (continued) Test series 4 Requirement Test Sub- clause Type of SPD SPD with only voltage- limiting function SPD with both voltage- limiting and current- limiting functions SPD with voltage- limiting f
37、unction and linear component between its terminals SPD having both voltage-limiting and current-limiting functions with enhanced transmission capabilities SPD having only voltage-limiting function but intended for use in extended range environment SPD having both voltage-limiting and current-limitin
38、g functions but intends for use in extended range environment Resistance to ingress of solid objects and to harmful ingress of water 6.3.3 A A A A A A Protection against direct contact 6.3.4 A A A A A A Fire resistance 6.3.5 A A A A A A Environmental tests 6.4 High temperature and humidity endurance
39、 6.4.1 O O O O A A Environmental cycling with impulse surges 6.4.2 O O O O A A Environmental cycling with a.c. surges 6.4.3 O O O O A A 2 Voltage limiting tests 6.2.1 Maximum continuous operating voltage (Uc) 6.2.1.1A A A A A A Insulation resistance 6.2.1.2A A A A A A Impulse durability for voltage
40、limiting function 1 6.2.1.6A A A A A A Impulse-limiting voltage 2 6.2.1.3A A A A A A Impulse reset switching types 6.2.1.4A A A A A A AC durability for voltage limiting function 1 6.2.1.5O O O O O O Blind spot test multi stage SPD 6.2.1.8A A A A A A Overstressed fault mode 6.2.1.7A A A A A A 3 Curre
41、nt limiting tests 6.2.2 Rated current 6.2.2.1N.A. A A A N.A. A Series resistance 6.2.2.2N.A. A A A N.A. A Current response time 6.2.2.3N.A. A N.A. A 3 N.A. A 3 Current reset time 6.2.2.4N.A. A N.A. A 3 N.A. A 3 Maximum interrupting voltage 6.2.2.5N.A. A N.A. A 3 N.A. A 3 Operating duty test 6.2.2.6N
42、.A. A N.A. A 3 N.A. A 3 AC durability for current limiting function 1 6.2.2.7N.A. A N.A. A 3 N.A. A 3 Impulse durability for current limiting function 1 6.2.2.8N.A. A N.A. A 3 N.A. A 3 4 Acceptance tests 6.5 O O O O O O A N.A. O 1 2 3 4 Applicable. Not applicable. Optional. For each category of test
43、 impulse a new set of samples can be used. It is admissible to measure the impulse-limiting voltage 6.2.1.3 while testing impulse durability 4.2.1.6. Test not applicable if there is a linear component between its terminals. Each test series is carried out on three samples. Copyright International El
44、ectrotechnical Commission Provided by IHS under license with IECLicensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 02:43:51 MDTNo reproduction or networking permitted without license from IHS -,-,- 61643-21 Amend. 1 IEC:2008 7 2 Normative references Add the following new references: IEC 61643-
45、22:2004, Low-voltage surge protective devices Part 22: Surge protection devices connected to telecommunications and signalling networks Selection and application principles ITU-T Recommendation K.55:2002, Overvoltage and overcurrent requirements for insulation displacement connectors (IDC) terminati
46、ons ITU-T Recommendation K.65:2004, Overvoltage and overcurrent requirements for termination modules with contacts for test ports or SPDs ITU-T Recommendation O.9:1999, Measuring arrangements to assess the degree of unbalance about earth Delete, on page 21, the dates from the following references: I
47、EC 60529, IEC 61000-4-5, IEC 61083-1 and IEC 61643-1. Delete the following reference: ITU-T Recommendation K.17:1988, Tests on power-fed repeaters using solid-state devices in order to check the arrangements for protection from external interference 3 Definitions Replace, the existing definitions 3.8, 3.10, 3.14, 3.15 and 3.22 by the following new definitions: 3.8 surge protective device SPD device that restricts the voltage of a designated port or ports, caused by a surge, when it exceeds a predetermined level NOTE 1 Secondary functions may be incorpora