EN 60952-2:2004

SLOVENSKI SIST EN 60952-2:2005

STANDARD
maj 2005
Letalske baterije – 2. del: Načrtovanje in konstrukcijske zahteve
Aircraft batteries -- Part 2: Design and construction requirements
ICS 29.220.20; 49.060 Referenčna številka
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

EUROPEAN STANDARD EN 60952-2
NORME EUROPÉENNE
EUROPÄISCHE NORM December 2004

ICS 29.220.20 ; 49.060 Supersedes EN 60952-2:1993

English version
Aircraft batteries
Part 2: Design and construction requirements
(IEC 60952-2:2004)
Batteries d'aéronefs Flugzeugbatterien
Partie 2: Exigences de conception Teil 2: Anforderungen für Planung
et de construction und Konstruktion
(CEI 60952-2:2004) (IEC 60952-2:2004)

This European Standard was approved by CENELEC on 2004-11-01. CENELEC members are bound to
comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and
notified to the Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden,
Switzerland and United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2004 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 60952-2:2004 E
Foreword
The text of document 21/612/FDIS, future edition 2 of IEC 60952-2, prepared by IEC TC 21,
Secondary cells and batteries, was submitted to the IEC-CENELEC parallel vote and was approved by
CENELEC as EN 60952-2 on 2004-11-01.
This European Standard supersedes EN 60952-2:1993.
The changes made involve the inclusion of those formats that can be standardised along with their
connectors and electrical interfaces.
It is recognised that additional data may be required by other organisations (national standards
bodies, AECMA, SAE, etc.). The present standard can be used as a framework to devise tests for
generation of the required data.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2005-08-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2007-11-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60952-2:2004 was approved by CENELEC as a European
Standard without any modification.
__________
- 3 - EN 60952-2:2004
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
NOTE Where an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
IEC 60952-1 2004 Aircraft batteries EN 60952-1 2004
Part 1: General test requirements and
performance levels
NORME CEI
INTERNATIONALE IEC
60952-2
INTERNATIONAL
Deuxième édition
STANDARD
Second edition
2004-09
Batteries d'aéronefs –
Partie 2:
Exigences de conception
et de construction
Aircraft batteries –
Part 2:
Design and construction
requirements
© IEC 2004 Droits de reproduction réservés ⎯ Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in any
utilisée sous quelque forme que ce soit et par aucun procédé, form or by any means, electronic or mechanical, including
électronique ou mécanique, y compris la photocopie et les photocopying and microfilm, without permission in writing from
microfilms, sans l'accord écrit de l'éditeur. the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch
CODE PRIX
PRICE CODE V
Commission Electrotechnique Internationale
International Electrotechnical Commission
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Pour prix, voir catalogue en vigueur
For price, see current catalogue

60952-2 © IEC:2004 – 3 –
CONTENTS
FOREWORD.5
1 Scope.9
2 Normative references.9
3 Terms and definitions .9
4 General construction requirements.9
4.1 General purpose requirements for class I and II applications .9
4.2 General requirements.11
4.3 Installation considerations.11
4.4 Workmanship.11
5 Electrolytes.13
5.1 Electrolyte resistance.13
5.2 Electrolyte level.13
5.3 Leakage.13
6 Dissimilar metals.15
7 Corrosion prevention - Vented nickel-cadmium batteries only .15
8 Battery containers and components .15
8.1 Battery containers and covers.15
8.2 Electrical bonding.15
8.3 Cell jars and monoblocs.15
9 Venting arrangements.17
9.1 Battery requirements.17
9.2 Cell requirements.17
10 Inter-cell connectors for nickel-cadmium batteries .17
10.1 Special purpose inter-cell connections – non-removable.19
11 Handles.19
12 Latches.19
13 Materials and components for flooded nickel-cadmium batteries.19
14 Gas barriers and thermal runaway – nickel-cadmium only.21
15 Dimensions, mass, markings and identification requirements .21
15.1 Dimensions and mass.21
15.2 Colour.21
15.3 Marking.21
16 Heaters - Battery heating system .23
17 Electrical connectors - Strength of receptacle.25
18 Safety.25
19 Temperature monitoring.25
Annex A  Battery formats.27
Annex B (normative) Connectors .53

60952-2 © IEC:2004 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
AIRCRAFT BATTERIES –
Part 2: Design and construction requirements
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 liaising 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 corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication 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 Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60952-2 has been prepared by IEC technical committee 21 :
Secondary cells and batteries.
This second edition cancels and replaces the first edition published in 1991. The changes
introduced in this edition involve the inclusion of those formats that can be standardised along
with their connectors and electrical interfaces.
The text of this standard is based on the following documents:
FDIS Report on voting
21/612/FDIS 21/616/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.

60952-2 © IEC:2004 – 7 –
It is recognised that additional data may be required by other organisations (national standards
bodies, AECMA, SAE etc.). The present standard can be used as a framework to devise tests
for generation of the required data.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
IEC 60952 consists of the following parts, under the general title Aircraft batteries:
Part 1: General test requirements and performance levels
Part 2: Design and construction requirements
Part 3: Product specification and declaration of design and performance (DDP)
The committee has decided that the conten
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