SIST EN 60896-22:2004
(Main)Stationary lead-acid batteries -- Part 22: Valve regulated types - Requirements
Stationary lead-acid batteries -- Part 22: Valve regulated types - Requirements
This part of EN 60896 applies to all stationary lead-acid cells and monobloc batteries of the valve regulated type for float charge applications, (i.e. permanently connected to a load and to a d.c. power supply), in a static location (i.e. not generally intended to be moved from place to place) and incorporated into stationary equipment or installed in battery rooms for use in telecom, uninterruptible power supply (UPS), utility switching, emergency power or similar applications. The objective of this part of EN 60896 is to assist the specifier in the understanding of the purpose of each test contained within EN 60896-21 and provide guidance on a suitable requirement that will result in the battery meeting the needs of a particular industry application and operational condition. This standard is used in conjunction with the common test methods described in EN 60896-21 and is associated with all types and construction of valve regulated stationary lead-acid cells and monoblocs used in standby power applications.
Ortsfeste Blei-Akkumulatoren -- Teil 22: Verschlossene Bauarten - Anforderungen
Batteries stationnaires au plomb -- Part 22: Types étanches à soupapes - Exigences
La présente partie de la EN 60896 s'applique à tous les éléments et batteries monoblocs stationnaires au plomb de type étanche à soupapes pour les applications en charge flottante, (c'est-à-dire connectés en permanence à une charge et à une source d'alimentation continue), à un emplacement fixe (c'est-à-dire n'étant généralement pas prévus pour être déplacés d'un emplacement à l'autre) et incorporés dans un matériel stationnaire ou installés dans un local batteries pour des applications telles que télécommunication, alimentation sans interruption (ASI), commutation, alimentation de secours ou applications similaires. L'objectif de la présente partie de la EN 60896 est de fournir une assistance au responsable de spécifications dans la compréhension de l'objet de chaque essai inclus dans la EN 60896-21 et de lui servir de guide dans la fixation d'une exigence adaptée qui garantisse que la batterie répondra aux besoins d'une application industrielle spécifique et à des conditions d'exploitation particulières. La présente norme s'utilise conjointement aux méthodes d'essai communes décrites dans la EN 60896-21 et est associée à tous les types et constructions d'éléments et monoblocs stationnaires au plomb de type étanche à soupapes utilisés dans les applications d'alimentation de secours
Stationary lead-acid batteries - Part 22: Valve regulated types - Requirements
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 60896-22:2004
01-maj-2004
Stationary lead-acid batteries - Part 22: Valve regulated types - Requirements
Stationary lead-acid batteries -- Part 22: Valve regulated types - Requirements
Ortsfeste Blei-Akkumulatoren -- Teil 22: Verschlossene Bauarten - Anforderungen
Batteries stationnaires au plomb -- Part 22: Types étanches à soupapes - Exigences
Ta slovenski standard je istoveten z: EN 60896-22:2004
ICS:
29.220.20 .LVOLQVNLVHNXQGDUQLþOHQLLQ Acid secondary cells and
EDWHULMH batteries
SIST EN 60896-22:2004 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 60896-22:2004
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SIST EN 60896-22:2004
EUROPEAN STANDARD EN 60896-22
NORME EUROPÉENNE
EUROPÄISCHE NORM March 2004
ICS 29.220.20
English version
Stationary lead-acid batteries
Part 22: Valve regulated types –
Requirements
(IEC 60896-22:2004)
Batteries stationnaires au plomb Ortsfeste Blei-Akkumulatoren
Part 22: Types étanches à soupapes - Teil 22: Verschlossene Bauarten -
Exigences Anforderungen
(CEI 60896-22:2004) (IEC 60896-22:2004)
This European Standard was approved by CENELEC on 2004-03-01. 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 60896-22:2004 E
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SIST EN 60896-22:2004
EN 60896-22:2004 - 2 -
Foreword
The text of document 21/595/FDIS, future edition 1 of IEC 60896-22, prepared by IEC TC 21,
Secondary cells and batteries, was submitted to the IEC-CENELEC parallel vote and was approved by
CENELEC as EN 60896-22 on 2004-03-01.
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) 2004-12-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2007-03-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60896-22:2004 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 60050-826 NOTE Harmonized as HD 384.2 S1:1986 (not modified).
IEC 60068-2-32 NOTE Harmonized as EN 60068-2-32:1993 (not modified).
IEC 60095 NOTE Harmonized in EN 60095 series (partly modified).
IEC 60359 NOTE Harmonized as EN 60359:2002 (not modified).
IEC 60695-11-10 NOTE Harmonized as EN 60695-11-10:1999 (not modified).
IEC 60707 NOTE Harmonized as EN 60707:1999 (not modified)
IEC 60950-1 NOTE Harmonized as EN 60950-1:2001 (modified).
IEC 61056 NOTE Harmonized in EN 61056 series (not modified).
IEC 61427 NOTE Harmonized as EN 61427:2001 (not modified).
ISO 9000 NOTE Harmonized as EN ISO 9000:2000 (not modified).
ISO 9001 NOTE Harmonized as EN ISO 9001:1994 (not modified).
ISO 9001 NOTE Harmonized as EN ISO 9001:2000 (not modified).
__________
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SIST EN 60896-22:2004
- 3 - EN 60896-22:2004
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 When an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
IEC 60896-21 2004 Stationary lead-acid batteries EN 60896-21 2004
Part 21: Valve regulated types -
Methods of test
ISO 1043-1 2001 Plastics - Symbols and abbreviated EN ISO 1043-1 2001
terms
Part 1: Basic polymers and their special
characteristics
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SIST EN 60896-22:2004
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SIST EN 60896-22:2004
INTERNATIONAL IEC
STANDARD 60896-22
First edition
2004-02
Stationary lead-acid batteries –
Part 22:
Valve regulated types –
Requirements
IEC 2004 Copyright - all rights reserved
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, 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
PRICE CODE
U
Commission Electrotechnique Internationale
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
For price, see current catalogue
---------------------- Page: 7 ----------------------
SIST EN 60896-22:2004
60896-22 IEC:2004 – 3 –
CONTENTS
FOREWORD.5
1 Scope.9
2 Normative references .9
3 Terms and definitions .9
4 Functional requirements .21
5 Reporting format.25
6 Requirements and characteristics.27
Annex A (normative) User statement of requirements .51
Annex B (normative) Supplier statement of product range test results.53
Bibliography.55
Table 1 – Safe operation requirements .21
Table 2 – Performance requirements .23
Table 3 – Durability requirements .23
Table 4 – Requirement for gas emission information.27
Table 5 – Requirement for high current tolerance.29
Table 6 – Requirement for short-circuit current and d.c. internal resistance information .29
Table 7 – Requirement for protection against internal ignition from external spark sources .31
Table 8 – Requirement for protection against ground short propensity .31
Table 9 – Requirement for content and durability of required markings – Requirement a) .33
Table 10 – Requirement for content and durability of required markings – Requirement b).33
Table 11 – Requirement for material identification .35
Table 12 – Requirement for the operation of the valve .35
Table 13 – Requirement for definition of the flammability rating of the materials .35
Table 14 – Requirement for performance of the intercell connector.37
Table 15 – Requirement for discharge capacity performance .37
Table 16 – Requirement for charge retention during storage .39
Table 17 – Requirement for float service with daily discharges .39
Table 18 – Requirement for recharge behaviour.41
Table 19 – Requirement for service life at an operating temperature of 40 °C .41
Table 20 – Requirement for the impact of a stress temperature of 55 °C or 60 °C .43
Table 21 – Requirement for the impact of abusive over-discharges.45
Table 22 – Requirements for information on thermal runaway sensitivity.45
Table 23 – Requirement for the impact of low temperature service on capacity.47
Table 24 – Requirement for dimensional stability at elevated internal pressures and
temperatures .47
Table 25 – Requirements for stability against mechanical abuse of units during installation .49
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SIST EN 60896-22:2004
60896-22 IEC:2004 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
STATIONARY LEAD-ACID BATTERIES –
Part 22: Valve regulated types –
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 60896-22 has been prepared by IEC technical committee 21:
Secondary cells and batteries
The text of this standard is based on the following documents:
FDIS Report on voting
21/595/FDIS 21/601/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.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
---------------------- Page: 9 ----------------------
SIST EN 60896-22:2004
60896-22 IEC:2004 – 7 –
This standard constitutes Part 22 of the IEC 60896 series, published under the general title
Stationary lead-acid batteries. At the time of the publication of this part, the following parts
had already been published:
Part 11: Vented types – General requirements and methods of tests
Part 21: Valve regulated types – Methods of test
Part 22: Valve regulated types – Requirements
The committee has decided that the contents of this publication will remain unchanged until
2009. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition or
• amended.
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SIST EN 60896-22:2004
60896-22 IEC:2004 – 9 –
STATIONARY LEAD-ACID BATTERIES –
Part 22: Valve regulated types –
Requirements
1 Scope
This part of IEC 60896 applies to all stationary lead-acid cells and monobloc batteries of the
valve regulated type for float charge applications, (i.e. permanently connected to a load and
to a d.c. power supply), in a static location (i.e. not generally intended to be moved from place
to place) and incorporated into stationary equipment or installed in battery rooms for use in
telecom, uninterruptible power supply (UPS), utility switching, emergency power or similar
applications.
The objective of this part of IEC 60896 is to assist the specifier in the understanding of the
purpose of each test contained within IEC 60896-21 and provide guidance on a suitable
requirement that will result in the battery meeting the needs of a particular industry application
and operational condition. This standard is used in conjunction with the common test methods
described in IEC 60896-21 and is associated with all types and construction of valve
regulated stationary lead-acid cells and monoblocs used in standby power applications.
This part of IEC 60896 does not apply to lead-acid cells and batteries used for vehicle engine
starting applications (IEC 60095 series), solar photovoltaic applications (IEC 61427), or
general purpose applications (IEC 61056 series).
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 60896-21:2004, Stationary lead-acid batteries – Part 21: Valve regulated types – Methods
)
of test
ISO 1043-1, Plastics – Symbols and abbreviated terms – Part 1: Basic polymers and their
special characteristics
3 Terms and definitions
For the purposes of this document, the following definitions apply.
3.1
accuracy (of a measuring instrument)
quality which characterizes the ability of a measuring instrument to provide an indicated value
close to a true value of the measurand
[IEV 311-06-08]
NOTE Accuracy is all the better when the indicated value is closer to the corresponding true value.
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SIST EN 60896-22:2004
60896-22 IEC:2004 – 11 –
3.2
accuracy class
category of measuring instruments, all of which are intended to comply with a set of
specifications regarding uncertainty
[IEV 311-06-09]
3.3
ambient temperature
temperature of the medium in the immediate vicinity of a cell or battery
[IEV 486-03-12]
3.4
ampere-hour
quantity of electricity or a capacity of a battery obtained by integrating the discharge current
in ampere with respect to time in hours
NOTE One ampere-hour equals 3 600 coulombs.
3.5
secondary battery
two or more secondary cells connected together and used as a source of electrical energy
[IEV 486-01-03]
3.6
monobloc battery
secondary battery in which the plate packs are fitted in a multi-compartment container
[IEV 486-01-17]
3.7
floating battery
secondary battery whose terminals are permanently connected to a source of constant
voltage sufficient to maintain the battery approximately fully charged, intended to supply a
circuit, if the normal supply is temporarily interrupted
[IEV 486-04-10]
3.8
battery capacity
quantity of electricity or electrical charge which a fully charged battery can deliver under
specified conditions
.
NOTE The SI unit for electric charge is the coulomb (1 C = 1 A s) but in practice, battery capacity is expressed in
ampere-hours (Ah).
[IEV 486-03-01]
3.9
charge
operation during which a secondary battery receives from an external circuit electrical energy,
which is converted into chemical energy
[IEV 486-01-11]
NOTE A charge is defined by its maximum voltage, current and duration.
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SIST EN 60896-22:2004
60896-22 IEC:2004 – 13 –
3.10
full charge
state where all the available active material of a secondary cell or battery has been
reconverted to its fully charged status
[IEV 486-03-37]
3.11
overcharge
continued charging after the full charge of a secondary cell or battery
[IEV 486-03-35]
3.12
cell
assembly of electrodes and electrolyte, which constitutes the basic unit of a secondary battery
[IEV 486-01-02]
3.13
electrochemical cell
electrochemical system capable of storing in chemical form the electric energy received and
which can give it back by reconversion, i.e. a secondary cell
[IEV 486-01-01, modified]
3.14
secondary cell
assembly of electrodes and electrolyte which constitutes the basic unit of a secondary battery
[IEV 486-01-02]
3.15
valve-regulated cell
secondary cell which is closed under normal conditions but which has an arrangement, which
allows the escape of gas if the internal pressure exceeds a predetermined value. The cell
cannot normally receive the addition of electrolyte
[IEV 486-01-20]
NOTE Such cells have an immobilized electrolyte to prevent spillage and allow for oxygen recombination on the
negative electrode.
3.16
actual capacity
C
a
quantity of electricity delivered by a cell or battery, determined experimentally with a
discharge at a specified rate to a specified end-voltage and at a specified temperature
NOTE This value is usually expressed in ampere-hours (Ah).
3.17
nominal capacity
C
n
suitable approximate quantity of electricity used to identify the capacity of a cell or battery
NOTE This value is usually expressed in ampere-hours (Ah).
[IEV 486-03-021]
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SIST EN 60896-22:2004
60896-22 IEC:2004 – 15 –
3.18
rated capacity
C
rt
quantity of electricity, declared by the manufacturer, which a cell or battery can deliver under
specified conditions after a full charge
NOTE This value is usually expressed in ampere-hours (Ah).
[IEV 486-03-22]
3.19
shipping capacity
C
sh
quantity of electricity, declared by the manufacturer, which a cell or battery can deliver, at the
time of shipment, under specified conditions of charge.
NOTE 1 This value is usually expressed in ampere-hours (Ah).
NOTE 2 In the present standard this value is assumed to be at least 0,95 C .
rt
3.20
durability
ability of an item (battery) to perform a required function under given conditions of use and
maintenance, until a limiting state is reached
NOTE A limiting state of an item (battery) may be characterized by the end of the useful life, unsuitability for any
economic or technological reasons or other relevant factors.
[IEV 191-02-02]
3.21
electrolyte
liquid or solid phase containing mobile ions that render the phase electrically conducting
[IEV 486-02-19]
3.22
stationary equipment
either fixed equipment or equipment not provided with a carrying handle and having such a
mass that it cannot easily be moved
[IEV 826-07-06]
3.23
failure
termination of the ability of an item (battery) to perform the required function
[IEV 603-05-06]
3.24
lead-acid battery
secondary battery in which the electrodes are made mainly from lead and the electrolyte is a
sulphuric acid solution
[IEV 486-01-04]
3.25
design life
expected period of useful life of a battery according to components, design and application.
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SIST EN 60896-22:2004
60896-22 IEC:2004 – 17 –
3.26
service life
period of useful life of a battery under specified conditions
[IEV 486-03-23]
3.27
useful life
under given conditions, the time interval beginning at a certain instant of time, and ending
when the failure intensity becomes unacceptable or when the item (battery) is considered un-
repairable as a result of a fault
[IEV 191-10-06]
3.28
performance
characteristics defining the ability of a battery to achieve its intended functions
[IEV 311-06-11]
3.29
product range
range of products, i.e. cells or monobloc batteries, over which specified design features,
materials, manufacturing processes, and quality systems (e.g. ISO 9000) of manufacturing
locations are identical
NOTE This definition guides the selection of the units to be tested in the framework of this standard.
3.30
accelerated test
test in which the applied stress level is chosen to exceed that stated in the reference
conditions in order to shorten the time duration required to observe the stress response of the
item (battery), or to magnify the response in a given time duration
NOTE To be valid, an accelerated test shall not alter (or conceal) the basic fault modes and failure mechanisms,
or their relative prevalence.
[IEV 191-14-07]
3.31
acceptance test
contractual test to prove to the customer that the item (battery) meets certain conditions of its
specification
[IEV 151-16-23]
3.32
commissioning test
tests on an item (battery) carried out on site to prove that it is correctly installed and can
operate correctly
[IEV 151-15-24]
3.33
compliance test
test used to show whether or not a characteristic or property of an item (battery) complies
with the stated requirements
[IEV 191-14-02]
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SIST EN 60896-22:2004
60896-22 IEC:2004 – 19 –
3.34
endurance test
test carried out over a time interval to investigate how properties of an item (battery) are
affected by the application of stated stresses and by their duration or repeated application
[IEV 151-16-22]
3.35
laboratory test
compliance test or determination test made under prescribed and controlled conditions, which
may or may not simulate field conditions
[IEV191-14-04]
3.36
life test
test to ascertain the probable life, under specified conditions, of an item (battery)
[IEV 151-16-21]
NOTE In VRLA batteries it is customary to assume that for every 10 K rise in service temperature above the
reference temperature (20 °C – 25 °C) a halving of the life in a life test is observed. (For a test temperature up to
60 °C).
3.37
performance test
test carried out to determine the characteristics of a machine (battery) and to show that the
machine (battery) achieves its intended function
3.38
type test
conformity test made on one or more items (batteries) representative of the production
[IEV 151-16-16]
3.39
thermal runaway
critical condition arising during constant voltage charging in which the current and the
temperature of the battery produce a cumulative mutually reinforcing effect which further
increases them and can lead to the destruction of the battery
[IEV 486-03-34]
3.40
boost voltage
U
boost
voltage specified by the manufacturer for charging at an elevated voltage so as to accelerate
charge, mildly overcharge or to equalized the state of charge of cells and monobloc batteries
3.41
final voltage
U
final
specified voltage at which a discharge of a battery is considered finished
[IEV 486-03-04]
NOTE This voltage relates to the demand of the exterior circuit, the discharge rate and temperature.
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SIST EN 60896-22:2004
60896-22 IEC:2004 – 21 –
3.42
float voltage
U
flo
constant charge voltage specified by the manufacturer for a floating battery
4 Functional requirements
4.1 Overview
In this part of IEC 60896 the following requirements are deemed essential to comprehensively
assure the ability of stationary lead-acid batteries of the valve regulated type to perform their
intended function as a reliable source of emergency power.
This part of IEC 60896 is not to be used to determine the test conditions as these are defined
in IEC 60896-21.
These requirements are grouped into safe operation, performance and durability needs.
4.2 Safe operation requirements
These requirements (see Table 1) define essential safe operation properties and features of
stationary lead-acid batteries of the valve regulated type.
Table 1 – Safe operation requirements
Test Clause Measures Purpose
6.1 Gas emission To determine the emitted gas volume
6.2 High current tolerance To verify the adequacy of current conduction
cross-sections
6.3 Short circuit current and d.c. internal To provide data for the sizing of fuses in the
resistance exterior circuit
6.4 Protection against internal ignition from To evaluate the adequacy of protective features
external spark sources
6.5 Protection against ground short propensity To evaluate the adequacy of design features
6.6 Content and durability of required markings To evaluate the quality of the markings and the
content of the information
6.7 Material identification To ensure the presence of material identification
markings
6.8 Valve operation To ensure the correct opening of safety valves
6.9 Flammability rating of materials To verify the fire hazard class of battery materials
6.10 Intercell connector performance To verify the maximum surface temperatures of
the connectors during high rate discharges
4.3 Performance requirements
These requirements (see Table 2) define performance properties of stationary lead-acid
batteries of the valve regulated type.
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SIST EN 60896-22:2004
60896-22 IEC:2004 – 23 –
Table 2 – Performance requirements
Test Clause Measures Purpose
6.11 Discharge capacity To verify the available capacities at selected
discharge rates or discharge durations.
6.12 Charge retention during storage To provide storage duration data
6.13 Float service with daily discharges To determine cyclic performance under float
charge conditions
6.14 Recharge behaviour To determine the recovery of capacity or
autonomy time after a power outage
4.4 Durability requirements
These requirements (see Table 3) define essential durability properties of stationary lead-acid
batteries of the valve regulated type.
Table 3 – Durability requirements
Test Clause Measures Purpose
6.15 Service life at an operating temperature of To determine the operational life at elevated
40 °C temperatures
6.16 Impact of a stress temperature of 55 °C or To determine the influence of high stress
60 °C temperatures on cell or monobloc battery life
6.17 Abusive over-discharge To determine the expected behaviour when
excessive capacity is discharged
6.18 Thermal runaway sensitivity To determine the expected times to establish a
condition of escalating current and temperature
6.19 Low temperature sensitivity To determine the sensitivity toward damage
induced by electrolyte freezing
6.20 Dimensional stability at elevated internal To determine the propensity of the cell or
pressure and temperature monobloc to be deformed by internal gas pressure
and at elevated temperatures
6.21 Stability against mechanical abuse of units To determine the propensity of the cell or
during installation monobloc battery to fracture or leak when
dropped.
4.5 Test requirements
The test methods required to verify the requirements defined in 6.1 to 6.21, are stated and
maintained in the separate standard IEC 60896-21.
A stationary lead-acid battery of the VRLA type covered by this present standar
...
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