EN 61881:1999

Railway applications - Rolling stock equipment - Capacitors for power electronics

Specifies capacitors used below an operating frequency of 2500 Hz with a rated voltage limited to 10000 V. Distinguishes beween a.c. and d.c. capacitors

Bahnanwendungen - Betriebsmittel auf Bahnfahrzeugen - Kondensatoren für Leistungselektronik

Applications ferroviaires - Matériel roulant - Condensateurs pour électronique de puissance

Spécifie les condensateurs utilisés au dessus d'une fréquence de fonctionnement de 2500 Hz avec une tension assignée limitée à 10000 V. Distinction est faite entre les condensateurs pour courant alternatif et ceux pour courant continu.

Železniške naprave – Oprema voznih sredstev – Kondenzatorji za močnostno elektroniko (IEC 61881:1999)

General Information

• Status: Withdrawn
• Publication Date: 07-Nov-1999
• Withdrawal Date: 30-Sep-2002
• ICS: 45.060 - Railway rolling stock
• Technical Committee: CLC/TC 9X - Electrical and electronic applications for railways
• Drafting Committee: CLC/SC 9XB - Electromechanical material on board rolling stock
• Parallel Committee: IEC/TC 9 - IEC_TC_9
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 02-Jan-2014
• Completion Date: 02-Jan-2014
• Ref Project: SIST EN 61881:2001 - Railway applications - Rolling stock equipment - Capacitors for power electronics

Relations

• Replaced By: EN 61881-1:2011 - Railway applications - Rolling stock equipment - Capacitors for power electronics - Part 1: Paper/plastic film capacitors
• Effective Date: 29-Jan-2023

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.þQRVWQRBahnanwendungen - Betriebsmittel auf Bahnfahrzeugen - Kondensatoren für LeistungselektronikApplications ferroviaires - Matériel roulant - Condensateurs pour électronique de puissanceRailway applications - Rolling stock equipment - Capacitors for power electronics45.040Materiali in deli za železniško tehnikoMaterials and components for railway engineering31.060.70Power capacitorsICS:Ta slovenski standard je istoveten z:EN 61881:1999SIST EN 61881:2001en01-februar-2001SIST EN 61881:2001SLOVENSKI
STANDARD
NORMEINTERNATIONALECEIIECINTERNATIONALSTANDARD61881Première éditionFirst edition1999-09Applications ferroviaires – Matériel roulant –Condensateurs pour électronique de puissanceRailway applications – Rolling stock equipment –Capacitors for power electronics Commission Electrotechnique Internationale International Electrotechnical CommissionPour prix, voir catalogue en vigueurFor price, see current catalogue IEC 1999
Droits de reproduction réservés
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Copyright - all rights reservedAucune partie de cette publication ne peut être reproduite niutilisée sous quelque forme que ce soit et par aucun procédé,électronique ou mécanique, y compris la photocopie et lesmicrofilms, sans l'accord écrit de l'éditeur.No part of this publication may be reproduced or utilized inany form or by any means, electronic or mechanical,including photocopying and microfilm, without permission inwriting from the publisher.International Electrotechnical Commission3, rue de Varembé
Geneva, SwitzerlandTelefax: [phone]e-mail: [e-mail] IEC web site
http://www.iec.chCODE PRIXPRICE CODEX

61881 © IEC:1999– 3 –CONTENTSPageFOREWORD.7Clause1General.91.1Scope and object.91.2Normative references.111.3Definitions.111.4Service conditions.192Quality requirements and tests.232.1Test requirements.232.2Classification of tests.232.3Capacitance and tan d measurements (routine test).252.4Capacitor loss tangent (tan d) measurement (type test).272.5Voltage test between terminals.272.6AC voltage test between terminals and case.292.7Test of internal discharge device.312.8Sealing test.312.9Surge discharge test.312.10Thermal stability test.332.11Self-healing test.352.12Resonance frequency measurement.352.13Environmental testing.352.14Mechanical testing.372.15Endurance test.392.16Destruction test.432.17Disconnecting test on fuses.512.18Partial discharge measurements (optional type tests).573Overloads.573.1Maximum permissible voltage.574Safety requirements.574.1Discharge device.574.2Case connections.594.3Protection of the environment.594.4Other safety requirements.595Markings.595.1Marking of the units.59

61881 © IEC:1999– 5 –ClausePage6Guide to installation and operation.616.1General.616.2Choice of rated voltage.636.3Operating temperature.636.4Special service conditions.656.5Overvoltages.656.6Overload currents.656.7Switching and protective devices.656.8Choice of creepage distance and clearance.676.9Connections.676.10Parallel connections of capacitors.676.11Series connections of capacitors.676.12Magnetic losses and eddy currents.696.13Guide for fuse and disconnector protection.69Annex A (informative)Waveforms.71Annex B (normative)Operational limits of capacitors with sinusoidal voltagesas a function of frequency and at maximum temperature (qmax).77Annex C (normative)Resonance frequency measuring methods – Examples.81Annex D (informative)Bibliography.85Figure 1 – Destruction test arrangement.45Figure 2 – N source d.c. plus a.c.49Figure 3 – N source d.c.51Figure A.1 – Example of current pulse width.75Figure B.1 – Supply conditions.77Figure C.1 – Measuring circuit.81Figure C.2 – Relation between the voltage across the capacitor and the supply frequency.81Figure C.3 – Discharge current wave shape.83Table 1 – Maximum temperature of cooling medium for unlimited time.21Table 2 – Test voltage between terminals.27Table 3 – Damp heat test.37Table 4 – Testing the robustness of terminals.37Table 5 – Example of current-carrying capacities of screw terminals and bolts.39Table 6 – Endurance test.41Table 7 – Maximum permissible voltage.57

61881 © IEC:1999– 7 –INTERNATIONAL ELECTROTECHNICAL COMMISSION___________RAILWAY APPLICATIONS –ROLLING STOCK EQUIPMENT –CAPACITORS FOR POWER ELECTRONICSFOREWORD1)The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprisingall national electrotechnical committees (IEC National Committees). The object of the IEC is to promoteinternational co-operation on all questions concerning standardization in the electrical and electronic fields. Tothis end and in addition to other activities, the IEC publishes International Standards. Their preparation isentrusted to technical committees; any IEC National Committee interested in the subject dealt with mayparticipate in this preparatory work. International, governmental and non-governmental organizations liaisingwith the IEC also participate in this preparation. The IEC collaborates closely with the International Organizationfor Standardization (ISO) in accordance with conditions determined on agreement between the twoorganizations.2)The formal decisions or agreements of the IEC on technical matters express, as nearly as possible, aninternational consensus of opinion on the relevant subjects since each technical committee has representationfrom all interested National Committees.3)The documents produced have the form of recommendations for international use and are published in the formof standards, technical specifications, technical reports or guides and they are accepted by the NationalCommittees in that sense.4)
In order to promote international unification, IEC National Committees undertake to apply IEC InternationalStandards transparently to the maximum extent possible in their national and regional standards. Anydivergence between the IEC Standard and the corresponding national or regional standard shall be clearlyindicated in the latter.5)
The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for anyequipment declared to be in conformity with one of its standards.6)
Attention is drawn to the possibility that some of the elements of this International Standard may be the subjectof patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.International Standard IEC 61881 has been prepared by IEC technical committee 9: Electricrailway equipment.The text of this standard is based on the following documents:FDISReport on voting9/522/FDIS9/530/RVDFull information on the voting for the approval of this standard can be found in the report onvoting indicated in the above table.This publication has been drafted in accordance with the ISO/IEC Directives, Part 3.Annexes A and D are for information only.Annexes B and C form an integral part of this standard.The committee has decided that this publication remains valid until 2004. At this date, inaccordance with the committee's decision, the publication will be·reconfirmed;·withdrawn;·replaced by a revised edition; or·amended.

61881 © IEC:1999– 9 –RAILWAY APPLICATIONS –ROLLING STOCK EQUIPMENT –CAPACITORS FOR POWER ELECTRONICS1 General1.1 Scope and objectThis International Standard applies to capacitors for power electronics intended to be used onrolling stock.The rated voltage of capacitors covered by this part is limited to 10 000 V.The operating frequency of the systems in which these capacitors are used is usually below2 500 Hz, while the pulse frequencies may go up to several thousand hertz, in some casesbeyond 10 000 Hz.It distinguishes between a.c. and d.c. capacitors.They are considered as components mounted in enclosures.NOTE – This standard covers an extremely wide range of capacitor technologies for numerous applications:overvoltage protection, d.c. and a.c. filtering, switching circuits, d.c. energy storage, auxiliary inverters, etc.The following are excluded from this standard:–capacitors for induction heat-generating plants operating at frequencies between 40 Hz and24 000 Hz (see IEC 60110);–capacitors for motor applications and the like (see IEC 60252);–capacitors to be used in circuits for blocking one or more harmonics in power supplynetworks;–small a.c. capacitors as used for fluorescent and discharge lamps (see IEC 61048 andIEC 61049);–capacitors for suppression of radio interference (see IEC 60384-14);–shunt capacitors for a.c. power systems having a rated voltage above 1 000 V (seeIEC 60871-1 and IEC 60871-2);–shunt power capacitors of the self-healing type for a.c. systems having a rated voltage up toand including 1 000 V (see IEC 60831-1 and IEC 60831-2);–shunt power capacitor of the non self-healing type for a.c. systems having a rated voltageup to and including 1 000 V (see IEC 60931-1 and IEC 60931-2);–electronic capacitors not used in power circuits (see IEC 60080 and IEC 60166);–series capacitors for power systems (see IEC 60143);–coupling capacitors and capacitors dividers (see IEC 60358);–capacitors for applications requiring energy storage/high current discharge such asphotocopies and lasers;–capacitors for microwave ovens.Examples are given in clause 6.

61881 © IEC:1999– 11 –1.2 Normative referencesThe following normative documents contain provisions which, through reference in this text,constitute provisions of this International Standard. For dated re
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