IEC 61643-1

Low-voltage surge protective devices - Part 1: Surge protective devices connected to low-voltage power distribution systems - Requirements and tests

This part of IEC 61643 is applicable to devices for surge protection against indirect and direct effects of lightning or other transient overvoltages. These devices are packaged to be connected to 50/60 Hz a.c. and d.c. power circuits, and equipment rated up to 1 000 V r.m.s. or 1 500 V d.c. Performance characteristics, standard methods for testing, and ratings are established for these devices that contain at least one nonlinear component that is intended to limit surge voltages and divert surge currents.

Parafoudres basse tension - Partie 1: Parafoudres connectés aux réseaux de distribution basse tension - Exigences et essais

La présente partie de la CEI 61643 est applicable aux dispositifs de protection contre les effets directs et indirects de la foudre ou contre les surtensions transitoires. Ces dispositifs sont conçus pour être connectés à des circuits sous tension alternative 50/60 Hz ou sous tension continue et à des équipements de tension assignée efficace jusqu'à 1 000 V en courant alternatif ou 1 500 V en courant continu. Les caractéristiques de fonctionnement, les méthodes normalisées d'essais et les paramètres sont établis pour les dispositifs incluant au moins un composant non linéaire destiné à limiter les surtensions et à écouler les courants.

Nizkonapetostne naprave za zaščito pred prenapetostnimi udari - 1. del: Naprave za zaščito pred prenapetostnimi udari za nizkonapetostne razdelilne sisteme - Zahteve in preskusi

Ta del IEC 61643 velja za naprave za zaščito pred prenapetostnimi udari zaradi posrednih in neposrednih posledic strele ali drugih prehodnih prenapetosti. Te naprave so namenjene povezavi z enosmernimi in izmeničnimi električnimi tokokrogi s 50/60 Hz in opremo, ki ustreza do 1.000 V RMS ali 1.500 V izmeničnega toka. Vzpostavljene so lastnosti delovanja, standardne metode za preskušanje in ocene za naprave, ki vsebujejo vsaj eno nelinearni komponento, namenjeno omejevanju prenapetosti in preusmerjanju nihanj toka.

General Information

• Status: Not Published
• ICS: 29.240 - Power transmission and distribution networks
• ICS: 29.240.10 - Substations. Surge arresters
• Technical Committee: SC 37A - Low-voltage surge protective devices
• Current Stage: PPUB - Publication issued
• Start Date: 30-Mar-2005
• Ref Project: SIST IEC 61643-1:2010 - Low-voltage surge protective devices - Part 1: Surge protective devices connected to low-voltage power distribution systems - Requirements and tests

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.UD]GHOLOQHParafoudres basse tension - Partie 1: Parafoudres connectés aux réseaux de distribution basse tension - Exigences et essaisLow-voltage surge protective devices - Part 1: Surge protective devices connected to low-voltage power distribution systems - Requirements and tests29.240.10Transformatorske postaje. Prenapetostni odvodnikiSubstations. Surge arresters29.120.50Fuses and other overcurrent protection devicesICS:Ta slovenski standard je istoveten z:IEC 61643-1SIST IEC 61643-1:1999en01-september-1999SIST IEC 61643-1:1999SLOVENSKI
STANDARD
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Parafoudres basse tension - Partie 1: Parafoudres connectés aux réseaux de distribution basse tension - Exigences et essaisLow-voltage surge protective devices - Part 1: Surge protective devices connected to low-voltage power distribution systems - Requirements and tests29.240.10Transformatorske postaje. Prenapetostni odvodnikiSubstations. Surge arresters29.120.50Fuses and other overcurrent protection devicesICS:Ta slovenski standard je istoveten z:IEC 61643-1SIST IEC 61643-1:2010en01-januar-2010SIST IEC 61643-1:2010SLOVENSKI
STANDARD
NORME INTERNATIONALECEIIEC INTERNATIONAL STANDARD 61643-1Deuxième éditionSecond edition2005-03 Parafoudres basse tension – Partie 1: Parafoudres connectés aux réseaux de distribution basse tension – Exigences et essais
Low-voltage surge protective devices – Part 1: Surge protective devices connected to
low-voltage power distribution systems – Requirements and tests
Pour prix, voir catalogue en vigueur For price, see current catalogue IEC 2005
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Copyright - all rights reserved Aucune partie de cette publication ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie et les microfilms, sans l'accord écrit de l'éditeur. 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 the publisher. International Electrotechnical Commission,
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XC Commission Electrotechnique InternationaleInternational Electrotechnical Commission
61643-1  IEC:2005 – 3 –
CONTENTS FOREWORD.9 INTRODUCTION.15
1 General.17 1.1 Scope.17 1.2 Normative references.17 2 Service conditions.19 2.1 Normal.19 2.2 Abnormal.19 3 Definitions.19 4 Classifications.31 4.1 Number of ports.31 4.2 SPD design topology.31 4.3 SPD class I, II and III tests.31 4.4 Location.33 4.5 Accessibility.33 4.6 Mounting method.33 4.7 SPD disconnector.33 4.8 Overcurrent protection.33 4.9 Degree of protection provided by enclosures according to IP codes of IEC 60529.33 4.10 Temperature range.33 4.11 System.35 4.12 Multipole SPD.35 5 Standard ratings.35 5.1 Preferred values of impulse current for class I tests Iimp.35 5.2 Preferred values of nominal discharge current for class II tests In.35 5.3 Preferred values of open-circuit voltage for class III tests Uoc.35 5.4 Preferred values of voltage protection level Up.35 5.5 Preferred values of r.m.s. or d.c. maximum continuous operating voltage Uc.35 6 Requirements.35 6.1 General requirements.35 6.2 Electrical requirements.39 6.3 Mechanical requirements.43 6.4 Environmental requirements.47 6.5 Safety requirements.47 6.6 Additional test requirements for two-port SPDs and one-port SPDs with separate input/output terminals.51 7 Type tests.51 7.1 General testing procedures.53 7.2 Identification and marking.63 7.3 Terminals and connections.63 7.4 Testing for protection against direct contact.73 SIST IEC 61643-1:2010

61643-1  IEC:2005 – 5 –
7.5 Determination of the measured limiting voltage.73 7.6 Operating duty test.83 7.7 SPD disconnectors and safety performance of overstressed SPDs.93 7.8 Test for two-port SPDs and one-port SPDs with separate input/output terminals.111 7.9 Additional tests.117 8 Routine and acceptance tests.151 8.1 Routine tests.151 8.2 Acceptance tests.151
Annex A (informative)
Considerations for SPDs when class I tests are to be applied.153 Annex B
(normative)
TOV values.157
Bibliography.159
Figure 1 – Example of a decoupling network for single-phase power.61 Figure 2 – Example of a decoupling network for three-phase power.61 Figure 3 – Test flow chart to determine the voltage protection level Up.77 Figure 4 – Alternate test for the measured limiting voltage.83 Figure 5 – Flow chart of the operating duty test.85 Figure 6 – Preconditioning and operating duty cycle test schedule.89 Figure 6a – Test circuit for SPDs with Ifi lower than the declared
short-circuit withstand capability.101 Figure 13 – Example of a circuit for use in testing SPDs under TOVs caused by
faults in the high (medium) voltage system and the corresponding timing diagram for the prospective voltages at the SPD terminals.107 Figure 7 – Example of a test circuit and corresponding timing diagram to
perform the test under TOVs caused by faults in
the low voltage system.109 Figure 8 – Apparatus for testing the cord retention.119 Figure 9 – Apparatus for flexing test.123 Figure 10a – Test apparatus.127 Figure 10 – Impact test apparatus.129 Figure 11 – Tumbling barrel.135 Figure 12a – Ball thrust tester.139 Figure 12b – Loading rod for ball thrust tester.139 Figure A.1 – General distribution of lightning current.155
Table 1 – Class I, II and III tests.31 Table 2 – Type test requirements where applicable for SPDs.55 Table 3 – Parameters for class I test.57 Table 4 – Tolerances on class III test waveform parameters.61 Table 5 – Screw thread diameters and applied torques.65 Table 6 – Connectable cross-sections of copper conductors for screw-type terminals or screwless terminals.67 Table 7 – Pulling forces (screw terminals).67 SIST IEC 61643-1:2010

61643-1  IEC:2005 – 7 –
Table 8 – Conductor dimensions.69 Table 9 – Pulling force (screwless terminals).71 Table 10 – Tests to be performed to determine the measured limiting voltage.73 Table 11 – Prospective short-circuit current and power factor.97 Table 11x – Current factor k for overload behaviour.115 Table 12 – Tightening requirements for clamping screws.119 Table 13 – Fall distance for impact requirement.131 Table 14 – Air clearances and creepage distances for SPDs category outdoor.143 Table 15 – Air clearances and creepage distances for SPDs category indoor.145 Table 16 – Dielectric withstand.149 Table 17 – Tolerances for proportional surge currents.151 Table B.1 – TOV test values.157
61643-1  IEC:2005 – 9 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION _________
LOW-VOLTAGE SURGE PROTECTIVE DEVICES –
Part 1: Surge protective devices connected
to low-voltage power distribution systems –
Requirements and tests
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 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, Technical 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 non-governmental organizations liasing with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and the corres
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