Disclosure to Promote the Right To Information

Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public.

इंटरनेट मानक

“!ान $ एक न' भारत का +नम-ण”Satyanarayan Gangaram Pitroda

“Invent a New India Using Knowledge”

“प0रा1 को छोड न' 5 तरफ”Jawaharlal Nehru

“Step Out From the Old to the New”

“जान1 का अ+धकार, जी1 का अ+धकार”Mazdoor Kisan Shakti Sangathan

“The Right to Information, The Right to Live”

“!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता है”Bhartṛhari—Nītiśatakam

“Knowledge is such a treasure which cannot be stolen”

“Invent a New India Using Knowledge”

है”ह”ह

IS 15549 (2005): Satationary Regulated Lead Acid Batteries[ETD 11: Secondary Cells and Batteries]

IS 15549:2005

W’@)vmm

R??mmaqf?wa d?di-mlik

Indian Standard

STATIONARY VALVE REGULATED LEAD ACIDBATTERIES — SPECIFICATION

lCS 29.220.20

0 BIS 2005

BUREAU OF INDIAN STANDARDSMANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG

NEW DELHI 110002

June 2005 Price Group 5

Secondary Cells and Batteries Sectional Committee, ET 11

FOREWORD

This Indian Standard was adopted by the Bureau of Indian Standards, after the draft finalized by the SecondaryCells and Batteries Sectional Committee had been approved by the Electrotechnical Division Council.

In the preparation of this standard, assistance has been derived frolm the following International Standards:

a) IEC 60896-2 ( 1995 ) Stationary lead acid batteries — General requirements and test methods — Part 2:Valve regulated types

b) BS 6290-1:1982 Specification for general requirements

c) 6290-4: 1997 Specification for classifying valve regulated types

d) DIN 43539 Part 5:1986 Accumulators; tests; sealed lead storage batteries with grid-type plates and immobilizedelectrolyte, maintenance free test methods

For the purpose of deciding whether a particular requirement of this standard is complied with the finalvalue, observed or calculated, expressing the result of a test or analysis, shall be rounded off in accordance withIS 2: 1960 ‘Rules for rounding off numerical values ( revised )’. The number of significant places retained in therounded off value should be the same as that of the specified value in this standard.

,i,1

-{

,’

AMENDMENT NO. 1 FEBRUARY 2012TO

IS 15549 : 2005 STATIONARY VALVE REGULATED LEADACID BATTERIES — SPECIFICATION

(Page 4, clause 12.1, line 26 from top, formula) – Substitute

t t tt

[ (27 )]’ ‘ [ (27 )]’‘

100 100C R t C C R t

C for

(ET 11)Reprography Unit, BIS, New Delhi, India

IS 15549:2005

Indian Standard

STATIONARY VALVE REGULATED LEAD ACIDBATTERIES — SPECIFICATION

1 SCOPE

This standard specifies capacities and performancerequirements and corresponding test methods forall types of high integrity series stationary valveregulated lead acid ( VRLA ) batteries. These batteriesworks on oxygen recombination principle and do notrequire any topping up with distilled water during itslife time.

2 REFERENCES

The Indian Standards listed in Annex A containprovisions which through reference in this text,constitute provisions of this standard. At the timeof publication, the editions indicated were valid. Al Istandards are subject to revision and parties toagreements based on this standard are encouragedto investigate the possibility of applying the most recenteditions of the standards indicated in Annex A,

3 TERMINOLOGY

3.0 For the purpose of this standard, the definitionsgiven in IS 1885 ( Part 8 ) in addition to the followingshall apply.

3.1 Battery Supply Condition

Valve regulated lead acid batteries are supplied infactory charged condition. The user of this batteryshall follow the recommendations of supplier forhandling and storage instructions as per manufacturersinstructions. The cells shall be free standing typeon a wooden support or assembled in metallictrays/racks painted with acid resistant paint.

3.2 Venting Device — Pressure Regulating Valve

The venting device shall be designed to relieve theexcessive pressure from the cell. Seating of valve eithershall be integral part of the cell lid or a provision inlid for separate venting device. Each cell shall beprovided with venting device such that it cannot beopened without a proper tool. The valve shall becapable to withstand the internal pressure specifiedby the manufacturer.

Each valve regulated venting device shall be providedwith flame arrestor capable of preventing the ingressof moisture/flame into the cell interior when the valverelease the gas mixture.

The opening and closing pressure shall be

within + 1 psi variation and manufacturer shalldeclare the closing and opening pressure values.

3.3 Type Tests

Tests carried out to prove the conformity with therequirements of this standard. These are intendedto prove the general quality and design of a givenbattery.

3.4 Acceptance Tests

Tests carried out on samples selected from a lot forthe purpose of verifying the acceptability of the lot.

3.4.1 Lot

All batteries of the same type, design and ratingmanufactured by the same factory during the sameperiod, using the same process and materials, offeredfor inspection at a time shall constitute a lot.

4 MATERIAL AND CONSTRUCTION

4.1 General

All the materials used in the manufacture of stationaryvalve regulated lead acid batteries shall be the bestof their respective kind, free from flaws and defectsand shall conform to the relevant Indian Standard, ifany. There shall be no impurities that be harmful tothe performance or life of a cell or battery.

4.2 Containers

The container shall be made of polypropylene co-polymer ( PPCP ), acrylonitrile butadiene styrene( ABS ), styrene — acrylonitrile ( SAN ) or any otheracid resistant plastic mat&ial and shall have chemicaland electrochemical compatibility. The container shallbe fire retardant grade and shall comply with provisionsof UL 94 — V2/VO. The other requirement for plasticcontainer shall be as per IS 1146.

4.3 Cell Lids

The cell lids shall be made of same plastic materialas that of container material and suitable either forresin bonding type or permanently sealing typebased on the cell sealing design adopted by themanufacturer.

4.4 Plates

The plates shal I be of pasted construction and ofgood workmanship. These shall be free from cracks,

1

IS 15549:2005

white patches and other imperfections, which mayaffect the life and performance of the battery.

4.5 Separators

The separators used shall be of glass mat havinghigh acid absorption capability, resistance tosulphuric acid and good insulating properties. Theseparator shall meet the test requirements as givenin this standard.

4.6 Terminal Posts

Positive and negative terminals posts shall have builtin lead plated copper or brass inserts. Terminals ofcells shall be clearly and unmistakably identifiable andmarking shall be of permanent nature. Terminal postsshall be suitably sealed at the lid to prevent leakageof any gas. Any gas escape shall be only throughthe venting device provided.

4.7 Fasteners

Nuts and bolts for connecting the cells shall be madeof copper, brass or stainless steel. Copper or brassnuts and bolts shall be effectively lead coated to preventcorrosion. Stainless steel bolts and nuts shall bepassivated to prevent corrosion with acid.

4.8 Electrolyte

The sulphuric and water used for the preparation ofelectrolyte shall conform to IS 266 and IS 1069respectively.

4.9 Connectors

When it is not possible to bolt the cell terminalsdirectly to assemble the battery, a separate lead coatedcopper connectors or flexible copper cable connectorsof suitable cross-section shall be provided to join thecells. The lead plating on copper connectors shallnot be less than 25 micron.

5 FLAME ARRESTOR

7 RATING AND DESIGNATION

7.1 Rating

The rating assigned to the cell or battery shall bethe capacity expressed in ampere hours ( Ah )( After correction to 27°C ) stated by the manufacturerto the obtainable when the cell or battery is dischargedat the 10-hour rate to an end voltage of 1.75 V. Thisrating is known as 10-hour rating of the cell or batteryand shall be designated as C 10.

7.2 Designation of Cells

Cells shall be suitably designated in order to identifithe type, capacity and rating, etc.

7.3 Standard Cell Capacities

The individual cell capacities are 20, 40, 60, 80,100, 120, 150,200,300,400,500, 600,800, 1000 and1500 Ah.

For the cell capacities above 1500 Ah, paralleling ofsmaller capacities shal I be done.

7.4 Information to be Furnished by Purchaser withEnquiry/Order

7.4.1 Application of the battery: Float/ SPV,

7.4.2 Number of identical batteries required in parallel.

7.4.3 Number of cells per battery.

7.4.4 The rate of charge and discharge at which thebatteries are to work. ‘

7.4.5 Capacity of the battery in Ampere hours at C 10.

7.4.6 Type of stacking arrangement required dependingon floor loading and space available number of tiers/stack.

7.4.7 Type of specific stand required, if any.

7.4.8 Proposed location of installation and ultimateconsignee.

Valve regulated venting device of each cell shall be 7.4.9 Probable date of commissioning the battery.provided with flame arrestors to prevent any sparkingflame from entering the cell. 7.4.10 Accessories and spares required, if any.

6 CHARGERS 7.4.11 Any other special condition/requirement, ifany.

This shall be constant potential type with currentand voltage limit ing faci lity. The charger shall have: 7.5 Information to be Furnished by the Battery

Suppliera) Higher voltage cut off at 2.35 VPC

b) Lower voltage cut off at 1.75 VPC7.5.1 Capacity of the battery at C 10 rate.

c) Voltage and current ripple <2 percent and 7.5.2 Manufacturer’s name.

5 percent respectively 7.5.3 Method of connections between cells, whetherd) Voltage regulation:+ 1 percent bolted or burnt.

f

-{

1:

The user shall follow the above recommendations. 7.5.4 Type and material of the container.

2

IS 15549:2005

7.5.5 Material of the separator.

7.5.6 Overall dimensions and weight of each completecell.

7.5.7 Space and floor loading in the desiredconfiguration.

7.5.8 Specific order, if any, in which the cells are tobe arranged.

7.5.9 Procedure for monitoring the health of batteryduring maintenance and preventive measuresrequired.

7.5.10 Measures required to be taken at the site ofinstallation. Showing the state of discharge andprocedure for recoupment thereof.

8 MARKINGS ON CELL

The following information shall be durablymarked on the outside of the cell or battery or batterymodule

a)

b)

c)

d)

e)

o

Manufacturers’ name,

Cell designation,

Cell Ah capacity,

Month and year of manufacture,

Date on which charge given before dispatch,and

Next due date for freshening charge.

9 TEMPERATURE FOR TESTS

The temperature range during the tests shall bewithin 20 to 35°C.

10 CLASSIFICATION OF TESTS

10.1 Type Tests

10.1.1

a)

b)

c)

d)

e)

t)

g)

h)

j)k)

The following shall constitute type tests:

Visual examination ( 4.1 to 4.9 and 8.1 ),

Checking of dimension as per manufacturer’sdrawing,

Test for C 10 capacity and voltage duringdischarge ( 12.1 ),

Test for C 1 capacity and voltage duringdischarge ( 12.2),

Ampere hour ( 12.4) and watt hour efficiencytest ( 12.5 ),

Test for retention of charge ( 12.6),

Acid retention capability test on separators( 12.7).

Wicking test on separators ( 12.7),

Test on vent seal operation ( 12.8),

Test for oxygen recombination efficiency

( 12.9), and

m) Endurance life cycle test ( 12.10).

NOTE — The capacity of other discharge rates likeC3, C5 shall be conducted by agreement between thepurchaser and the supplier. Capacities atvariousdischargerates are given in Table 2.

10.1.2 Type tests shall be carried out on seven cells.Refer to sequence of type testing given in Table 3.

10.1.3 If the different capacities of cells are madeusing, capacity same size of standard plate, anyone of the capacity cell shall be subjected for life test.The test to be waived off after ascertaining the platesize.

10.1.4 [f any of the samples fails in the relevant typetest, the testing or inspecting authority may call forfresh samples not exceeding twice the originalnumber and subject them again to all the tests ortest in which the failure has occurred as agreed tobetween the lmanufacturer and the buyer. If there isany failure in any of the retests, the type shall beconsidered as not having passed the requirement ofthis standard.

10.1.5 During tests, if required, additional cells forvoltages matching requirement of the testequipment shall be permitted.

11 ACCEPTANCE TESTS

Visual exalnination ( 4.1 to 4.9 and 8,1). Checking ofdimensions as per manufacturers drawing ( Refer toAnnex 11). Test for capacity and test for voltage duringdischarge.

A recommended sampling plan and criteria foracceptance of a lot are given in Table 4.

12 TESTS PROCEDURES

12.1 Test for C 10 Capficity

After standing on open circuit not less than 2 hoursand not more than 24 houfs from the completion ofa full charge, the cell shall be discharged througha suitable variable resistance at a constant currentof I = 0.1 x C 10 amperes. The discharge shall bestopped when the close circuit voltage falls to1.75 V per cell.

●

●

●

During the discharge at 10-hour rate, thevoltmeter and ammeter readings shall berecorded every 5 minutes for first 15 minutes,thereafter up to the end voltage.

The discharge current shall be maintainedwithin + 1 percent of the specified rate ofdischarge.

The time in hours elapsing between ~hebeginning and end of discharge shall be t&en

3

IS 15549:2005

●

●

●

●

●

as period of discharge.

The average temperature of the electrolyteduring discharge shall be the average of thetemperature readings noted at hourlyintervals, for discharge rates between C5 andC 10. This shall be done by measuring thetemperature of the battery terminal as it willbe almost the same as that of electrolyte.However, for discharge rates higher than C5( C 1 to C4 ), the average temperaturemeasurement shall be made from the cellcontainer surface.

Unless or otherwise agreed capacity test at10-hour rate as described above is normallyto be treated as the test discharge for thepurpose of the acceptance of the cell.

On the first discharge, the cell shall give notless than 90 percent of the rated capacity.

The cell/battery shall give 100 percent ratedcapacity within 5 discharges.

Once the rated capacity has been met on anydischarge, further discharge cycles forcapacity need not be continued.

The capacity shall be corrected at 27°C by the followingformula:

C,+[C, xR(27-f)]Capacity at 27°C =

100

Where

Ct = observed capacity at t°C,

R = variation factor as per Table 1, and

‘t’= average cell temperature measured atterminals in “C.

Example for calculation of capacity at differenttemperature:

Capacity ‘C’ measured at 24?;= 1000 Ah

IOOO+[1OOOXO.43X

Capacity at 27°C =(27-24)]

100

= 1012,9Ah

Requirement

Actual capacity corrected to 27°C shall not be lessthan 85 percent of the rated capacity in first cycle.The rated capacity shall be met within 5 cycles. Thecapacity shal I not exceed 120 percent of the ratedcapacity.

12.1.1 Voltages During C 10 Discharge Test

The cell voltage shall not be less than the followingvalues:

a) After six minutes from the startof discharge : 1.98V

b) After six hours of discharge : 1.92V

c) At ten hours of discharge : 1.75V

12.2 Test for Cl Capacity

After standing on open circuit not less than 2 hoursand not more than 24 hours from the completion ofa full charge and after satisfactory completion ofC 10 capacity test, the cell shall be discharged througha suitable variable resistance at a constant current ofI =0.5x C 10 amperes. The discharge shall be stoppedwhen the close circuit voltage falls to 1.70 V per cell.

●

●

●

●

●

●

During the discharge at hour rate, the volt-meter and ammeter readings shall be

recorded every 5 minutes up to the endvoltage.

The discharge current shall be maintainedwithin +1 percent of the specified rate ofdischarge.

The time in hours elapsing between thebeginningand end of discharge shall be

taken as period of discharge.

The average temperature of the electrolyteduring discharge shall be the average ofthe temperatures of the electrolyte noted athourly intervals. This can be done bymeasuring the temperature of the batteryterminal as it will be almost the same as thatof electrolyte.

On the first discharge the cell shall give notless than 90 percent of the C 1 capacity.

The cell/battery shall give 100 percent ratedcapacity within 3 discharges.

Table 1 ‘R’ Temperature Correction Factor Versus Rate of Discharge

( Clause 12.1)

Discharge C1O and C9 C8 C7 C6 C5 C4 C3 C2 clRate above

Value of ‘R’ 0.43 0.45 0.47 0,50 0.54 0.58 0.62 0.68 0.76 0.90

NOTE — Capacity-temperature correction is not a true linear relationship.

4

-. , “..,.,,.-=4—

IS 15549:2005

NOTE — In between of Cl discharge, test may beconducted at low discharge rate ( for example: in betweentwo Cl discharge, C 10test maybe conducted).

12.3 Capacity Test at Other Discharge Rates

The capacity tests at discharge rates other thanC 10, if required shall be conducted as per theagreement between the customer and the supplier.The percentage of capacity at different dischargerates are given in Table 2.

Table 2 Percentage of Capacity at DifferentDischarge Rates

Rate of Capacity Expressed End CellDischarge as Percentage ( 0/0 ) Voltage ( V )

of Capacity atRate C 10

cl 50.0 1.70

C2 63.3 1.70

C3 71.7 1.74

C4 78.2 1.74

C5 83.3 1.751

I C8 I 95 I 1.75 I1

t Clo 100 1.75

NOTES

1 The capacity at different discharge rates specifiedabove to be reached witbin 3 cycles ( other than C 10,for which requirement are specified in 10.1 ) a~d thesetests shall be conducted after the cell reaches the ratedcapacity at C IO.

2 In between the higher rate of discharge, test shall beconducted at low discharge rate ( Excample: in betweentwo C 3 discharge, C 10 test to be conducted ).

12.4 Ampere Hour Efficiency

●

●

●

●

●

●

Fully charge the cell/battery as permanufacturers instructions.

Discharge the cell/battery at I = 0.1 x C 10Amperes to an end voltage of 1.75 V.

Calculate the exact number of Ampere hoursdelivered.

Recharge the battery for the same numberof Ampere hour at the same current.

A second dischwge shall be made to the samecut ,off voltage as before.

The efficiency of the cell/battery is thencalculated as:

Ah delivered duringthe second discharge

Ah efficiency ( ‘%o ) = x 100Ah input givenduring recharge

Requirement: The Ah efficiency when calculated asabove shall not be less than 90 percent.

12.5 Watt Hour Efficiency

● Watt hour efficiency shall be calculated bymultiplying the Ah efficiency by the ratio ofaverage discharge and recharge voltage.

● The value of discharge and recharge voltageshal Ibe calculated from the log sheets of Ahefficiency test.

Average voltageduring discharge

Wh efficiency = x Ah efficiency(v.)

Average voltage.,

during charge

Requirement: Watt hour efficiency when calculatedas above shall not be less than 80 percent.

12.6 Test for Retention of Charge

●

●

●

●

Capacity shall be verified by performing C1Ocapacity test twice for average capacity andthe capacity shall be recorded as ‘C’.

The cell shall be fully recharged as permanufacturers instructions.

After complete recharge, clean and wipe thecell/battery surface dry. The cell shall be lefton open circuit for a period of 28 days withoutdisturbance at 27 + 3“C.

After the storage period of 28 days, the cellshal I be discharged in accordance withcapacity tests. The value of capacitymeasured after storage is denoted by ‘C 1‘.

The loss of capacity ‘Y expressed as a percentage iscalculated as :

(c-c, ) ~loos= c

Requirement: The loss in capacity as calculated aboveshall not be more than 5 percent.

12.7 Test on Separators ( Ref to Fig. 1 and Annex Bfor Test Set Up and Pr6cedure )

● The uncompressed water absorption of theseparator shall be at least 5 g of water pergram of separator material.

● WICKING TEST: The total wicking heightin separator shall not be less than 630 mm in24 hours.

● ACID RETENTIONTEST: lleminhnum acidretention capacity of the separator shall be6.5 g per gram of separator material.

12.8 Test for Vent Seal Operation

● Five regulating valves shall be selected forthe test.

.5

IS 15549:2005

● The venting shall only occur through thevalves.

Requirement : Opening and closing pressure of thevalve shall he as per manufacturers specification andshall be within +1 psi.

12.9 Test for Oxygen Recombination Efficiency( Ref to Fig. 2 and Annex C for Test Set Up )

1. The fully charged battery shall be overchargedat a current of C 10/100 for 96 consecutivehours.

2. Install the discharge gas collector.

3. Within one hour of completion of ( 1 ) , thebatteries shall be continuously charged at acurrent of C 10/200 for further 24 hours.

a) Immediately after completion of24 hours, collection of gases emitted shallbe started.

b) Collect the emitted gases for one hour.

c) During the collection time, the ambienttemperature of the batteries shall be27+ 10°C and the outlet of the pipe forthe gas collector leading from thebatteries shall not be more than 50 mmbelow the water.

Then, the volume of gases emitted ( expressed atatmospheric pressure of 101.3 kPa at 27°C ) shall bedetermined from the formula:

Jf.

where

v.

p.

1=

v=

Q=

n .

P 298 v 1—x101.3 (t+273) x Q x ;

volume of gases emitted expressed at anatmospheric pressure 101.3 kPa at 27°C per1 Ah of electricity discharge ( ml /Ah ),

atmospheric pressure during measurement,

ambient temperature of the collector(“c ),amount of emitted gas collected ( ml ),

ampere hour input at the time of gascollection ( Current x Time ), and

number of cells.

The gas recombination efficiency shall be calculatedby the formula.

Gas recombination efficiency ( % ) =(1- V)X1OO

684

where

684 is theoretical volume of gases emitted per Ahat atmospheric pressure 101.3 kPa at 27”C.

Requirement: The gas recombination efficiency shallnot be less than 90 percent.

12.10 Endurance Life Cycle Test

To ascertain float service life as well as ageing, theaccelerated test as under shall be performed:

Part 1

●

●

Part 2

●

●

●

●

●

Part 3

●

Fully charge the cell/battery as permanufacturers instructions.

Discharge the cell/battery at I = 2.4 x C 10Amperes to an end voltage of 1.74 V( Equivalent to C 3 capacity ). This shall betreated as original test capacity.

The cell/battery shall be charged as per themanufacturers instruction.

The cell/battery shall be immersed in hot waterbath maintained at a temperature of 55 +3°Ctill it has attained the bath temperature.

The cell/battery shall be discharged for 3 hoursat the rate of I = 1.92x C 10Amperes followedby a charge at constant voltage of 2.33V/cell and with current limit of40 percent ofits rated capacity for duration of 9 hours.

The above charge and discharge cycle shallbe repeated 30 times.

This shall be treated as 1 life unit.

After bringing the cell/battery to ambienttemperature conditions, capacity test as perPart I to be conducted as test discharge toverify the capacity after each unit of life test.

The above tests to be repeated till the capacityfalls below 80 percent of its original test capacity.

Requirement : Minimum five such life units shall beIsuccessfully completed before the capacity falls below80 percent of its original test capacity.

The life of the battery may be arrived at by plottingthe test results on Arrhennius graph and extrapolatingthem.

NOTES

1 This test shall be conducted on a cell. For a batterymodule formed by paralleling the cells to enhancecapacity, this test need not to be repeated.

2 If the different capacities of cells are made using samesize plates and if higher capacity cel Is have undergonelife test with same size plate, this test need not to berepeated.

6

-.. . I .-, .“- . ....-—”.

13 SEQUENCE OF TYPE TESTING

The sequence of type testing shall be in accordancewith Table 3.

Table 3 Sequence of Type Testing Cell Numbers

S1 Test DescriptionNo.

I. Visual examination

2. Physical verification

3. Test for C 10 capacity

4. Test for C 1 capacity

5. Ampere hour and watthour efficiency test

6. Test for retention ofcharge

7. Test for oxygenrecombinationefficiency

8. Endurance life cycIetest

123456

Xxx xxx

Xxx xxx

Xxx xxx

xx————

— — xx——

xx————

— — xx——

— —— — xx

14 SAMPLING SCHEME AND CRITERIA FORACCEPTANCE

The number of cell to be selected at randomfrom the lot shall be in accordance with co] 1 andCO12of Table 4.

Table 4 Sampling Scheme and Criteria forAcceptance

Lot Size First Second 2N S1 S2 S3Stage Stage

(1 ) (2) (3) (4) (5) (6) (7)

up to 50 2 2 4011

51 to 300 3 3 6011

301 to 500 5 5 10 0 2 2

501 to 1000 8 8 16 0 2 2

I 001 and above 13 13 26 0 3 4

IS 15549:2005

In order to ensure the randomness for selection, randomnumber tables shall be used ( see IS 4905 ).

The cells selected as above shall be subjected to theacceptance test in the order specified.

Each of the batteries selected in the first stage inaccordance with COI2 of Table 4 above shall be testedfor acceptance. A battery shall be declared defectiveif it fails in one or more of the acceptance tests.

i)

ii)

iii)

iv)

If the number of defective is less than orequal to S1, the lot shall be considered asconfirming to the requirements of the standard.

If the number of defective is equal to orgreater than S2, the lot shall be consideredas not conforming to the requirements of thestandard.

If the number of defective in the first stageis less than S2 and greater than S 1, a furthersample of same size as taken in the first stageshall be taken and tested.

If the number of defective in the two samplescombined is less than S3, the lot shall beconsidered as conforming to the requirementsof the standard. Otherwise, the lot shall beconsidered as not conforming to therequirements of the standard.

$

7

IS 15549:2005

ANNEX A

( Clause 2 )

LIST OF REFERRED INDIAN STANDARDS

IS No

266:1993

1069:1993

1146:1981

Title

Specification for sulphuric acid( third revision)

Specification for quality tolerancesfor water for storage batteries( second revision)

Specification for rubber and plastics

IS No.

1885(Part 8): 1986

4905:1968

ANNEX B

(Clause 12.7)

PROCEDURE FOR WICKING TEST ON AGM

Title

container for lead acid storagebatteries ( second revision )

Electrotechnical vocabulary: Part 8Secondary cells and batteries (first

revi9ion )

Methods for random sampling

SEPARATORS

B-1 Cut the separator of Size: 750 mm x 50 mm width from stand.

B-2 Take a stand and hold the separator vertically B-6 MeasuR the wicking height in separator fromas shown in Fig. 1. bottom ( Excluding the height of separator

B-3 Take D. M. Water in a jar and add small clamped ).

quantity of potassium permanganate for colour NOTESidentification.

1 Water level in jar shall be maintained throughout

B-4 Keep the jar on a stand and dip the separator the test.

bottom portion of 25 mm in solution ( Water + 2 The test to be conducted in closed environment.

Potassium permanganate ) for 24 h. Figure 1 given below shows the wicking test set up:

B-5 After 24 h remove the separator from jar and

I1

1

SEPARATOR

STAND

.-, .-. . . .-------- --. -.--m----. . . ..-. . . . ,fARWITHD.M.WAT~+

\ /I

PERMANGANAT13

FIG. 1 WICKINGTESTSETUP

8

ANNEX C

( Clause 12.9)

TEST FOR OXYGEN RECOMBINATION

IS 15549:2005

EFFICIENCY

+

11

H

..- M-uring---- cylinder

-..

/BATTERY

4 r

Wakr..-

5- “---------”-”-:----1------- ------- ------- ------t

------

H-------

NOTE — Test should be carried out on a minimum of 2 samples and both should meet the requirements.

FIG. 2 ARRANGEMENTFORGAS COLLECTIONANI)MEASUREMENT

,.

9

Bureau of Indian Standards

BIS is a statutory institution established under the Bureau of Indian Standards Act, 1986 to promoteharmonious development of the activities of standardization, marking and quality certification of goods andattending to connected matters in the country.

Copyright

!31Shas the copyright of all its publications. No part of these publications may be reproduced in any formwithout the prior permission in writing of BIS. This does not preclude the free use, in the course of implementingthe standard, of necessary details, such as symbols and sizes, type or grade designations. Enquiries relatingto copyright be addressed to the Director (Publications), BIS.

Review of Indian Standards

Amendments are issued to standards as the need arises on the basis of comments. Standards are also reviewedperiodically; a standard along with amendments is reaffirmed when such review indicates that no changes areneeded; if the review indicates that changes are needed, it is taken up for revision. Users of Indian Standardsshould ascertain that they are in possession of the latest amendments or edition by referring to the latest issueof ‘BIS Catalogue’ and ‘Standards : Monthly Additions’.

This Indian Standard has been developed from Doc : No. ET 11( 5388 ).

Amendments Issued Since Publication

Amend No. Date of Issue Text Affected

BUREAU OF INDIAN STANDARDS

Headquarters:

Manak Bhavan, 9 Bahadur Shah Zafar Marg, New Delhi 110002Telephones: 23230131,2323337’5,2323 9402 Website: www.bis.org.in

Regional Offices: Telephones

Central : Manak Bhavan, 9 Bahadur Shah Zafar Marg

{

23237617NEW DELHI 110002 23233841

Eastern : l/14C. 1.T. Scheme VII M,V. 1.P. Road, Kankurgachi

{

23378499,23378561KOLKATA 700054 23378626,23379120

Northern : SCO 335-336, Sector 34-A, CHAN131GARH160022

{

26038432609285

Southern: C. I. T. Campus, IV Cross Road, CHENNAI 600113

{

22541216,2254144222542519,22542315

Western : Manakalaya, E9 MIDC, Marol, Andheri (East)

{

28329295,28327858MUMBAI 400093 28327891,28327892

I

Branches : AHMEDABAD. BANGALORE. BHOPAL. BHUBANESHWAR. COIMBATORE.FARIDABAD. GHAZIABAD. GUWAHATI. HYDERABAD. JAIPUR. KANPUR.LUCKNOW. NAGPUR. NALAGARH. PATNA. PUNE. RAJKOT. THIRUVANANTHAPURAM.VISAKHAPATNAM.

Printed at New India Printing Press, Khurja, India