SIST EN 60952-1:2005

SLOVENSKI SIST EN 60952-1:2005

STANDARD
maj 2005
Letalske baterije – 1. del: Splošne zahteve za preskušanje in stopnje
sposobnosti
Aircraft batteries -- Part 1: General test requirements and performance levels
ICS 29.220.20; 49.060 Referenčna številka
SIST EN 60952-1:2005(en)
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

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EUROPEAN STANDARD EN 60952-1
NORME EUROPÉENNE
EUROPÄISCHE NORM December 2004

ICS 29.220.20 ; 49.060 Supersedes EN 60952-1:1993


English version


Aircraft batteries
Part 1: General test requirements and performance levels
(IEC 60952-1:2004)


Batteries d'aéronefs Flugzeugbatterien
Partie 1: Exigences générales d'essais Teil 1: Allgemeine Prüfanforderungen
et niveaux de performances und Leistungsmerkmale
(CEI 60952-1:2004) (IEC 60952-1:2004)






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 60952-1:2004 E

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EN 60952-1:2004 - 2 -
Foreword
The text of document 21/611/FDIS, future edition 2 of IEC 60952-1, prepared by IEC TC 21,
Secondary cells and batteries, was submitted to the IEC-CENELEC parallel vote and was approved by
CENELEC as EN 60952-1 on 2004-11-01.
This European Standard supersedes EN 60952-1:1993.
The changes made involve the inclusion of additional test requirements to meet the needs of the
regulatory airworthiness authorities for both product performance and qualification.
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 60952-1:2004 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC 61434 NOTE Harmonized as EN 61434:1996 (not modified).
ISO 266 NOTE Harmonized as EN ISO 266:1997 (not modified).
ISO 9000 NOTE Harmonized as EN ISO 9000:2000 (not modified).
__________

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- 3 - EN 60952-1:2004
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
1) 2)
IEC 60051-1 - Direct acting indicating analogue EN 60051-1 1998
electrical measuring instruments and their
accessories
Part 1: Definitions and general
requirements common to all parts

1)
IEC 60051-2 - Part 2: Special requirements for EN 60051-2 1989
ammeters and voltmeters

1)
IEC 60925 - D.C. supplied electronic ballasts for EN 60925 1991
tubular fluorescent lamps - Performance
requirements

IEC 60952-2 2004 Aircraft batteries EN 60952-2 2004
Part 2: Design and construction
requirements

1) 2)
IEC 60952-3 - Part 3: Product specification and EN 60952-3 2004
declaration of design and performance
(DDP)

ISO 2859 Series Sampling procedures for inspection by - -
attributes

1)
ISO 7137 - Aircraft - Environmental Conditions and - -
Test Procedures for Airborne Equipment

1)
RTCA DO-160 - Environmental conditions and text - -
procedures for airbone equipment

1)
U.S FTM 191A/5906
- Federal Test Method 5906, Flammability - -

(Horizontal Test)

1)
SAE AIR 1377A-80
- Fire Test Equipment for Flexible Hose - -
and Tube Assemblies

1)
SAE AS 1055B - Fire Testing of Flexible Hose, Tube - -
Assemblies, Coils, Fittings and Similar
System Components


1)
Undated reference.
2)
Valid edition at date of issue.

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NORME CEI
INTERNATIONALE IEC
60952-1
INTERNATIONAL
Deuxième édition
STANDARD
Second edition
2004-09
Batteries d'aéronefs –
Partie 1:
Exigences générales d'essais
et niveaux de performances
Aircraft batteries –
Part 1:
General test requirements
and performance levels
© 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 X
Commission Electrotechnique Internationale
International Electrotechnical Commission
ɆɟɠɞɭɧɚɪɨɞɧɚɹɗɥɟɤɬɪɨɬɟɯɧɢɱɟɫɤɚɹɄɨɦɢɫɫɢɹ
Pour prix, voir catalogue en vigueur
For price, see current catalogue

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60952-1 © IEC:2004 – 3 –
CONTENTS
FOREWORD.7
INTRODUCTION.11
1 Scope.13
2 Normative references.13
3 Terms and definitions .15
4 Test conditions and measuring apparatus .19
4.1 General test conditions .19
4.2 Measuring apparatus.19
4.3 Charging method.19
4.4 Physical examination.21
5 Electrical requirements and test procedures.21
5.1 Capacity tests at the 1 I rate.21
1
5.2 Constant voltage discharge.23
5.3 Rapid discharge capacity .25
5.4 Charge retention.27
5.5 Storage.27
5.6 Charge stability.27
5.7 Short-circuit test.29
5.8 Charge acceptance.29
5.9 Insulation resistance and voltage response .33
5.10 Duty cycle performance .33
5.11 Water consumption test .35
5.12 Overcharge endurance.35
5.13 Cyclic endurance.37
5.14 Deep discharge test.37
5.15 Induced destructive overcharge .39
5.16 Electrical emissions.39
6 Environmental requirements.39
6.1 Vibration.39
6.2 Acceleration.43
6.3 Operational shock and crash safety .45
6.4 Explosion containment.45
6.5 Gas emission.45
6.6 Altitude pressure.47
6.7 Temperature variation (shock) .49
6.8 Fungus resistance.51
6.9 Humidity.57
6.10 Fluid contamination.59
6.11 Salt spray.61
6.12 Physical integrity at high temperature (85 °C).61
6.13 Flammability.63
6.14 Electrolyte resistance.65
6.15 Thermal sensors.67
6.16 Component qualification tests .67
6.17 Battery airtightness test (where applicable) .73

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60952-1 © IEC:2004 – 5 –
6.18 Cell baffle test .73
6.19 Strength of connector receptacle – Connector types C and Q .75
6.20 Handle strength test .75
6.21 Hazardous materials.75
6.22 Instructions for continued airworthiness .75
6.23 Limitations.75
6.24 Electronics.75
7 Additional requirements for batteries for class II applications.77
7.1 Tamper resistant hardware test.77
7.2 Vented filler cap test for nickel-cadmium cells.77
7.3 Gas barrier – for vented nickel-cadmium batteries only .77
7.4 Impact resistance (non-metallic battery container).79
7.5 Initial capacity requirement for vented nickel-cadmium .81
7.6 Special test requirements .81
8 Quality assurance requirements .81
8.1 General quality assurance requirements .81
8.2 Approval requirements.81
Bibliography .89
Figure 1 – Vibration orientation.41

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60952-1 © IEC:2004 – 7 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________
AIRCRAFT BATTERIES –
Part 1: General test requirements and performance levels
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 60952-1 has been prepared by IEC technical committee 21:
Secondary cells and batteries.
This second edition cancels and replaces the first edition published in 1988. The changes
made to this edition involve the inclusion of additional test requirements to meet the needs of
the regulatory airworthiness authorities for both product performance and qualification.
The text of this standard is based on the following documents:
FDIS Report on voting
21/611/FDIS 21/615/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.

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60952-1 © IEC:2004 – 9 –
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
1
Part 3: Product specification and declaration of design and performance (DDP)
The committee has decided that the contents of this publication will remain unchanged until the
maintenance result date indicated on the IEC 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.
___________
1)
 The second edition of IEC 60952-3 (2004) replaces the first edition published in 1993 under the title: Aircraft
bateries – Part 3: External electrical connectors

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60952-1 © IEC:2004 – 11 –
INTRODUCTION
The IEC 60952 series defines minimum environmental and performance requirements for
establishing a qualification standard for airworthiness of lead-acid and nickel-cadmium aircraft
batteries, which contain corrosive electrolytes.
The series defines test procedures for determining battery performance. The electrical test
results may be used to establish airworthiness in a particular application. For all tests, the
manufacturer declares minimum performance for each battery type.
The requirements of IEC 60952 for aircraft batteries are divided into three parts:
– Part 1 defines test procedures for the evaluation, comparison and qualification of batteries
and states minimum environmental performance levels for airworthiness.
– Part 2 defines the design requirements for aircraft batteries as well as the format (shape
and size) for the battery as well as the range of aircraft interface connectors that are used.
– Part 3 defines the product specification which is used to define specific requirements for an
application and a declaration of design and performance (DDP), which details the
performance of a battery format when tested to Part 1.

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60952-1 © IEC:2004 – 13 –
AIRCRAFT BATTERIES –
Part 1: General test requirements and performance levels
1 Scope
This part of IEC 60952 defines test procedures for the evaluation, comparison and qualification
of batteries and states minimum environmental performance levels for airworthiness. Where
specific tests are defined with no pass/fail requirement (to establish performance capability),
the manufacturer’s declared values, from qualification testing, will be used to establish
minimum requirements for ongoing maintenance of approval for that design of battery.
To provide representative examples, this standard utilises voltage and current values based
upon an aircraft electrical system nominally rated at 28 V d.c. Additionally, the nominal values
for cell voltage are assumed to be 1,2 V per cell for nickel-cadmium batteries and 2,0 V per cell
for lead-acid batteries. It is important to note that when using this standard to evaluate
products designed to operate on an aircraft electrical system other than the nominal 28 V d.c.,
or whose chemical properties are such that the individual cell voltage differs from that stated
above, test values need to be adjusted accordingly.
The specific topics addressed in this part of 60952 serve to establish acceptable quality
standards required to qualify a battery as airworthy and are divided into 2 classes (class I
and II) as defined in Clause 3 of this standard.
– Most of the requirements of this Part 1 state the minimum performance level for class I
applications which are also mandatory for class II applications.
– Subclauses 5.6 and 6.6 state 2 different levels of performance for class I and II
applications.
– Clause 7 states special requirements for class II applications only.
In cases where a specific application demands testing and/or requirements exceeding those
detailed in this standard the purchaser will detail said requirements in the product specification
and the method of establishing compliance.
2 Normative references
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.
IEC 60051-1, Direct acting indicating analogue electrical measuring instruments and their
accessories – Part 1: Definitions and general requirements common to all parts
IEC 60051-2, Direct acting indicating analogue electrical measuring instruments and their
accessories – Part 2: Special requirements for ammeters and voltmeters
IEC 60925, DC supplied electronic ballasts for tubular fluorescent lamps – Performance
requirements

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60952-1 © IEC:2004 – 15 –
IEC 60952-2:2004, Aircraft batteries – Part 2: Design and construction requirements
IEC 60952-3, Aircraft batteries – Part 3: Product specification and declaration of design and
2)
performance (DDP)
ISO 2859 (all parts), Sampling procedures for inspection by attributes
ISO 7137, Aircraft – Environmental conditions and test procedures for aircraft equipment
RTCA DO-160, Environmental Conditions and Test Procedures for Airborne Equipment
U.S. Federal Test Method, Standard No. 191A / Federal Test Method 5906, Flammability
(Horizontal Test)
SAE AIR 1377A-80, Fire Test Equipment for Flexible Hose and Tube Assemblies
SAE AS 1055B, Fire Testing of Flexible Hose, Tube Assemblies, Coils, Fittings and Similar
System Components
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
current values
values of current in ampere (A) used to charge and discharge cells and batteries, expressed as
a multiple of the capacity
NOTE 1 For example, a current of 20 A used to charge a cell with a rated capacity C (Ah) of 100 Ah would be
expressed as C/5 or 0,2 C (A).
NOTE 2 IEC 61434 is equally applicable to both nickel-cadmium and lead-acid and therefore the reference current
(I ) can be expressed as
t
(I )A = C Ah/1h
t n
where C is the rated capacity declared by the manufacturer in ampere hours and n is the timebase in hours for
n
which the rated capacity is declared.
3.2
1 rate I
1
current which the battery delivers to give not less than its rated C capacity in 1 h
1
NOTE This is the basis on which all other current ratings are defined.
3.3
rated capacity
C
1
minimum capacity, expressed in Ah, obtained from a charged battery when discharged at the
1 I rate to the end point voltage (see 3.8)
1
3.4
end of life capacity C
1
EOL
minimum capacity, expressed in Ah, obtained from a charged battery throughout its normal
service life when discharged at the 1 I rate to the end point voltage
1
___________
2)
The first edition (1993) was published under the title Aircraft batteries – Part 3: External electric connectors

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60952-1 © IEC:2004 – 17 –
3.5
constant voltage current
I
pr
discharge current, which the battery delivers at the conclusion of a 15 s power discharge,
controlled so as to maintain a constant terminal voltage of half the nominal voltage
3.6
peak power current
I
pp
discharge current at t = 0,3 s while testing as in 3.5
3.7
charged battery
battery that has been fully charged in accordance with the battery manufacturer’s instructions
or as defined in the product specification
3.8
end point voltage
EPV
unless otherwise stated, during discharge the battery end point voltage (EPV) corresponding to
a mean voltage per cell of 1,00 V for nickel-cadmium or 1,67 V for lead-acid batteries
3.9
serviced battery
battery that has been fully prepared and maintained in accordance with the manufacturer’s
instructions or as defined in the product specification
3.10
airworthiness
compliance of a battery or part thereof with all conditions and regulations required by the
appropriate governmental authorities for their safe operation and performance
3.11
product specification
separate document which details the specific requirements which a battery is expected to meet
for a particular aircraft application
3.12
class I battery
battery classification covering batteries for general purpose applications, for which this
standard provides a general guideline and the minimum requirement necessary to certify a
battery as airworthy
3.13
class II battery
battery classification covering batteries for special purpose applications, for which specific and
more rigid requirement are specified by the user and are necessary to qualify a battery for use
in an extreme climatic or operational environment

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60952-1 © IEC:2004 – 19 –
4 Test conditions and measuring apparatus
4.1 General test conditions
If specific test conditions are not defined for a test, the test shall be carried out under the
following general test condition:
– Air pressure: 85 kPa to 106 kPa (850 mbar to 1 060 mbar)
– Temperature: 23 °C ± 2 °C
– Relative humidity (RH): not to exceed 70 %
If definite tolerances have not been specified, a deviation of not more than ±5 % from the given
non-electrical values will be permitted.
4.2 Measuring apparatus
The measuring method used for the tests shall be selected to suit the magnitude of the
parameters to be measured. The apparatus shall be regularly calibrated and shall have at least
the degree of accuracy given below.
4.2.1 Voltage measurement
The instruments used for measuring voltage shall be voltmeters having an accuracy of
class 0,5 or better, as defined in IEC 60051-1 and IEC 60051-2. Digital systems shall comply
with IEC 60925. The resistance of the voltmeters shall be at least 5 000 Ω/V.
4.2.2 Current measurement
The instruments used for current measurement shall be ammeters having an accuracy of
class 0,5 or better, as defined in IEC 60051-1 and IEC 60051-2. Digital systems shall comply
with IEC 60925. This accuracy class shall be maintained for the assembly of ammeter, shunt
and leads.
4.2.3 Temperature measurement
The instruments used for temperature measurement shall have an accuracy of ±1 °C or better.
4.2.4 Time measurement
The instruments used for time measurement shall be to an accuracy
...