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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.

“जान1 का अ+धकार, जी1 का अ+धकार” “प0रा1 को छोड न' 5 तरफ”

Mazdoor Kisan Shakti Sangathan Jawaharlal Nehru
“The Right to Information, The Right to Live” “Step Out From the Old to the New”

IS 15730 (2006): ac Flashers for 2 and 3 Wheelers [TED 11:

Automotive Electrical Equipment]

“!ान $ एक न' भारत का +नम-ण”

Satyanarayan Gangaram Pitroda
“Invent a New India Using Knowledge”

“!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता ह”

है”
ह
Bhartṛhari—Nītiśatakam
“Knowledge is such a treasure which cannot be stolen”
 IS 15730:2006

*m
-@&n* RFTfim
Wii’ *

Indian Standard
ac FLASHERS FOR 2 AND 3 WHEELERS

ICS 43.040.20

0 BIS 2006

BUREAU OF INDIAN STANDARDS

MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARC
NEW DELHI 1100Q2
November 2006 Price Group 4
Automotive Electrical Equipments and Instruments Sectional Committee, TED 11

FOREWORD

This Indian Standard was adopted by the Bureau of Indian Standards, after the draft finanzed by the Automotive
Electrical Equipments and Instruments Sectional Committee had been approved by the Transport Engineering
Division CounciL

For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed
or calculated expressing the result of a test or analysis, shall be rounded off in accordance with IS 2: 1960 ‘Rules for
rounding off numerical-values (revised’. The number of significant places retained in the rounded off value should be
the same as that of the specified value in this standard.
 1S 15730:2006

Indian Standard
ac FLASHERS FOR 2 AND 3 WHEELERS

1 SCOPE switch is actuated. Secondary fimction may include the

This standard specifies requirements and methods of tests visible pilot indication for turn signal system rind an audible
for solid state ac flashers with a load of two lamps for signal to indicate the flasher operation. The ac flasher must
direction indicators of automotive having a regulated operate with the ac supply available on board.
12V ac (rms) system. The flashing of direction indicating
lamps on the same side of the vehicle shall occur alternately 3.3 Routine Tests — Tests carried out on each ac flasher
or synchronously. to check the parameters, which are likely to vary during
production.
Hot wires type flashers with a load of two lamps for
direction indicators of automotive having a 6 V, 12 V 3.4 Type Tests — Tests carried out to prove conformity
and 24 V direct current (de) system are covered in with the specification. These are intended to verifi the
IS 4060 : 1994 ‘Automotive vehicles — Flashers for design characteristics of a given type of ac flasher.
direction indicators — Specification (second revision)’.
3.5 Acceptance Test — Tests carried out on ac flashers
2 REFERENCES taken from a lot for the purpose of acceptance of the lot.

The following standards contain provisions, which through

4 DESIGN AND CONSTRUCTION
reference in this text, constitute provisions of this standard.
At the time of publication the editions indicated were valid.
4.1 The flasher shall have such a construction that if, the
All standards are subject to revision and parties to
filament of either of the two bulbs of the.direction indicator
agreements based on this standard are encouraged to
is broken, the driver of the vehicle shall be made aware
investigate the possibility of applying the most recent
suitably.
editions of the standards indicated below:
4.1.1 Flasher shall be so designed ensuring that the failure
IS No. fitle
of the direction indicator lamp is indicated as given in
1248 (Part 1) : Direct acting indicating analogue Table 1.
2003 electrical measuring instruments and
Table 1 Failure of Direction Indicator Lamp
their accessories: Part 1 Definitions and
Indications
general requirements ~ourth revision)
10250:1982 Specification for severities for Magneto System (with Tnrn Pilot Indication) I
environmental tests for automotive
a) The other direction indicating lamps shall
electrical equipments
continue to flash

3 TERMINOLOGY Rear b) The frequency of flashing of the

or flasher in this condition should be
For the purpose of this standard the following definitions Front 130 to 200 flashes-per minute
shall apply.
c) The turn pilot indicator lamp shall remain
glowing continuously or shows at least 20
3,1 Direction Indicator — A lighting device to show in
percent change in frequency
which direction the driver intends to turn by giving a
flashing light on that side of the vehicle towards which
the turn is being made, The definition does not include: 4.2 The ac flasher should be so designed that it operates
a) Switchgear, and properly without failure for the following type of input ac
waveforms:
b) Semaphore type indicators.
a) Sine wave, and
3.2 Flasher (Flasher Unit – a c Operation)— A device b) Square wave.
installed in a vehicle lighting system, which has the primary
function of causing the direction indicator unit to flash 4.3 The material used and workmanship in the construction
intermittently at a specified frequency, when the turn signal of flashers shall be of such quality that provides adequate

1
IS 15730:2006

protection, in normal use, against mechanical and electrical a) Visual examination (see 5.2),
failures and shall withstand the effects of changing b) Performance test (see 5.3), and
weather conditions, water or excessive dampness,
c) Life test (see-5.5).
corrosion, dust, oil, high temperature or any other
deleterious influence to which they may exposed under The number of samples for acceptance tests shall be agreed
conditions of their normal use. upon between the purchaser and the manufacturer.
[However, the recommended plan of sampling is given in
5 TESTS Annex A.

5.1 Classification of Tests

5.1.3 Routine Tests
5.1.1 Type Tests The following shall constitute routine tests:
The following shall constitute type tests: a) Visual examination (see 5.2), and
a) Visual examination (see 5.2); b) Performance test (see 5.3).
b) Performance test (see 5.3);
c) Vibration test (see 5.4); 5.2 Visual Examination
d) Life test (see 5.5); Flashers shal! be examined for finish and workmanship.
e) Damp test (cycling) test (see 5.6); The flashers including their terminals shall be free from
injurious flaws and visual defects.
0 Dry heat test (see 5.7);
g) Test for salt spray (see 5.8); and 5.3 Performance Test
h) Water spray test (see 5.9).
5.3.1 -[eSt Kequlrements
-
5.1.1.1 Criteria for approval a) ac flasher shall be mounted in a condition similar
Forty-five samples shall be submitted for testing together to the final mounting on the vehicle.
with the relevant data. The testing authority shall issue a b) ac flasher then be connected in a standard test
type approval certificate ifthe flashers are found to comply circuit as shown in Fig. 1.
with the requirements of (a) to (c) of 5.1.1.2.
c) Test shall be carried out at a temperature of
27+ 2“C.
5.1.1.2 After visual examination samples shall be
subjected to the tests in the following manner: d) Electrical measuring instruments used during the
test shall at least be of accuracy class 1.0 as
a) Performance test (see 5.3) — The performance
recommended in IS 1248 (Part 1).
requirements shall be based upon a test of
20 samples chos&n at random. e) Test requirements of operating voltage, and
required load conditions are given in Table 2.
b) Life test (see 5.5) — Test shall be performed on to
20 samples chosen at random. 5.3.2 The flasher shall work satisfactorily on the
c) Environmental lest — Six flasher units conforming respective operating voltage range given in Table 2
to 5.3.2 to 5.3.5 shall be subjected to the tests as (on respective magneto test bench over engine speeds
stated below: 1000 rev/rein to maximum engine speed).
1) Vibration test (see 5.4) :2
5.3.3 Within the voltage range the flashing rate shall be
2) Damp heat (cycling) test (see 5.6) : 1 within the limits of 60 to 120 flashes per minute. The
3) Dry heat test (see 5,7) :1 flashing rate shall be measured over a period of one.minute.
4) Test for salt spray (see 5.8) :1 In case of one bulb failure condition the flashing rate shall
increased to 130 to 200 flashes per minute.
5) Water spray test (see 5.9) :1
5.3.4 The ratio ‘Time ON’ to ‘Total cycle time’ (Duty
5.1.1.3 In case of failure of one or more type tests, the
cycle) shall be 35 to 65 percent. The ‘OFF’ period shall
testing authority may call for fresh samples not exceeding
then permit each lamp to fall to within O to 10 percent of
twice the number of original samples and subject them to
its fill design brilliance.
the test(s) in which failure occurred. If, in repeat test(s)
no failure occurs, the test requirement maybe considered 5.3.5 The time required before the flasher begins to work
to have been complied. shall be not more than one second.

5.1.2 Acceptance Tests 5.3.6 The voltage drop between input and output
The acceptance tests shall constitute the following: terminals of the ac flasher unit shall be less than 3.0 V

2
 IS 15730:2006

Table 2Performance Characteristics of ac Flasher

(Clauses 5.3.1 ,5.3.2 and 5.3.7)

St Specification Test Conditions Minimum Nominal Maximum Units

F
No.
(1) (2) (3) (4) (5) (6) (7)

O Operating Whh 10 W1amps and 9 13.9 16 volts,

voltage 2WTP1’J rms

ii) Duty cycle Whh 10 W lamps and 35 50 65 Percent

2WTPI”

iii) Starting time With 10 W lamps and . 1 Second

2WTPI’)

E
iv) Voltage drop Whh external load — 2.5 3.0 Volts peak
(As shown in i 2V- 57 W14.05 f-) to peak
Fig. 1) (resistive load)

+) Flash rate a) 60 90 120

a) Normal With 10 W lamps and Flashes
b) One bulb fail 2W TPI’) b) I 30 . 200 per minute

I Optional test (actlasherwith inbuikshort circuit protection)

I vi) Short circuit test

at 1 500, 3500 and
a) With 35 W load
b) No load condition
a)
b)
—
—
—
—
25
5
Flashes
per minute
\ 7000 rpm (9 to
16 Vrrns) c) At 16V rrns i/p
(Initial current 6.5A c) 0.0 0.2 0.3 Ampere
I tOdrop to) I I I
I NOTE- Remove short circuit andsupp[yrecovery to be within 10 srnaximum

I ‘) TPI –Turn oilot indicator.

peak to peak with appropriate lamp load as given in the 5.4.2 Test Procedure
Table 1 and with the contacts closed shown in Fig. 1. a) The ac flasher shall be subjected to conditions of
vibration as given in Table 3.
5.3.7 Short circuit test (For the ac flashers with the short
circuit protection). The details of the test is given in “b) The frequency shall be varied continuously and the
Table 2 and shown in Fig. 1. vibration shall continue for a period of 5 h each for
X, Y and Z axis.
5.3.8 Classification of possible defects in performance
tests, in according to seriousness of their nature is given
Table 3 Vibration Condition
in Annex B.
S1 Parameter Unit Specification
5.4 V]bration Test No.
(1) (2) (3) (4)

5.4,1 Test Requirements O Sweep rate min 6

ii) Frequency range Hz 10-55
a) ac flasher shall be mounted in a condition similar
to the final mounting on the vehicle with suitable iii) Acceleration mlsz 200

accessories and fixture. iv) Duration on each axis h 5

b) Clause 4.1 of IS 10250 shall be used as a guideline

for the vibration test. The conditions for the test 5.4.3 Assessment
are given in 5.4.2. a) At the end of the vibration test the test piece shall
c) Test shall carried out at ambient temperature of be examined. Any unit showing evidence of
27=E 2° C. material defects, displacement or rupture of parts
shall be considered to have failed.
d) Electrical measuring instruments used during
the test shall at least be of accuracy class 1.0 as b) At the end of the test, the ac flasher shall satisfj the
recommended in IS 1248 (Part 1). requirements of 5.3.2 to 5.3.6.

3
 ..

THESE TWO CABLES TO RUN

AOJACENT FOR AT LEAST 500mm
SPARK GAP 5 mm
CDL
I
1 I

iE%%:57w
!&a * J I L(F) 10W

A&

a
? ? L(R)IOW *

( k
LIGHTING
COIL VOLTAGE DROP l—
CHARGING CHECK ON CRO
COIL Vp.p
— TURNlt!G R(R) 10W
4 ,Lv INDICATOR SWITCH

e
MAGNETO ASSEMBLY A.C.
OR FLASHER L~
EQUIVALENT
A C SOURCE v.

* 1 2

J&‘OFI

53( SHORT CIRCUIT TEST )

BEEPER

(OPTIONAL TEST)

FIG. 1 REPRESENTATIVE TESTSETUP FORac FLASHER

PERFORMANCE
 IS 15730:2006

5.5 Life Test test shall at least be of accuracy class 1.0 as

recommended in IS 1248 (Part 1).
5.5.1 rest Requirements
a) ac flasher shall be mounted in a condition similar 5.6.2 The number of conditioning cyc[es shall be two.
to the final mounting on-the vehicle with suitable
accessories. 5.6.3 Recovery

b) Twenty flasher units conforming to 5.3.2 to 5.3.5 The recovery period shall be 2 h.
shall be selected for life test when carried out as
5.6.4 Assessment
type test.
c) Test shall carried out at a temperature of 27 * 2°C. a) At the end of the damp heat test the test piece shall
be examined. Any unit showing evidence of
d) Electrical measuring instruments used during the
material defects or rupture of parts shall be
test shall at least be of accuracy class 1.0 as
considered to have failed.
recommended in IS 1248 (Part 1).
b) At the end of the test the ac flasher shall satisfi the
5.5.2 Test Procedure requirements of 5.3.2 to 5.3.6.

a) Connect the ac flasher as per Fig, 1 for 12 V ac

5.7 Dry Heat Test
+system. 12V ac, 2A system may be substitute
magneto. 5.7.1 Test Requirements
b) Disconnect the external load.
a) ac flasher shall be subject to the dry heat test in its
c) For type test, the samples shall operate for a ‘unpacked’ and ‘switched off condition.
minimum of 500 h cycling time, the cycle details
b) IS 10250 (see 4.2) is used as a guideline reference
are given in Table 4. for the dry heat test.
d) As an acceptance test, the duration of the life test c) Electrical measuring instruments used during the
shall be 100 h continuous. test shall at least be of accuracy class 1.0 as
recommended in IS 1248 (Part 1).
5.5.3 Assessment
At the end of the test the ac flasher shall satisfy the 5.7.2 The test shall be carried out at a temperature of
requirements of 5.3.2 to 5.3.6. 70 + 3°C, The flasher shall be tested in the switch ‘off
conditions.
5.6 Damp Heat (Cycling) Test
5.7.3 The period of exposure shall be 24 h.
5.6.1 rest Requirements
5.7.4 Recovery
a) ac flasher shall be subject to the damp heat test in
its ‘unpacked’ and ‘switched off condition. The recovery period shall be 2 h.

b) IS 10250 (see 4.3) is used as a guideline reference

5.7.5 Assessment
for the damp heat (cycling) test.
a) At the end of the dry heat test the test piece shall be
c) Electrical measuring instruments used during the
examined. Any unit showing evidence of material
defects, displacement or rupture of parts shall be
Table 4 Cycle Details considered to have failed.
(Clause 5.5.2)
b) At the end of the test the ac flasher shall satisfi the
requirements of 5.3.2 to 5.3,6.
sl Test Condition Duration Total
No. Duration
5.8 Test for Salt Spray
(1) (2) (3) (4)

250 h for LH
5.8.1 Test Requirements
0 ‘ON’ time: 2 min indication 500 h a) ac flasher shall be subject to the salt spray test in
‘OFF’ time: 5 min 250 h for RH its ‘unpacked’ and switched off condition.
indication I
b) IS 10250 (see 4.8) is used as a guideline reference
ii) For ac flasher with short for the salt spray test.
circuit protection:
‘ON’ time: 2 min 250 h for LH 500 h
c) Electrical measuring instruments used during the
‘SHORT’ time: I min indication test shall at least be of accuracy class 1.0 as
‘OFF’ time: 5 min recommended in IS 1248 (Part 1).

5
IS 15730:2006

5.8.2 The temperature of salt spray chamber shall be b) At the end of spray test wipe the flasher with
27+ 2°C. clean cloth to ensure that the terminals are free of
water.
5.8.3 Assessment
5.9.3. 4ssessment
a) Attheend of thesalt spray test thetest piece shall
be examined. Any unit showing evidence of rusting At the end of the test the ac flasher shall satisfy the
on metallic parts shall be considered to have failed. requirements of 5;3.2 to 5.3.6.

b) At the end of the test the ac flasher shall satis& the 6 MARKING
requirements of 5.3.2 to 5.3.6.
6.1 The flashers shall be marked with the following details:
5.9 Water Spray Test
a) Name and /or trade-mark of manufacturer;

5:9.1 lest Requirements b) Rated voltage;

c) Rated load, in W;
a) ac flasher shall be introduced into the water spray
chamber. d) Month and year of manufacturer; and
e) Part number/or any other unique identification.
b) IS 10250 (see 4.13) is used as a guideline reference
for the water spray test.
6.2 BIS Certification Marking
c) Electrical measuring instruments used during the The product may also be marked with the Standard Mark.
test shall at least be of accuracy class 1.0 as
recommended in IS 1248 (Part 1). 6.2.1 The use of the Standard Mark is .gov.erned by the
provisions of the Bureau of Indian Standards Act, 1986
5.9.2 Test Procedure and the Rules and Regulations made thereunder. The
a) ac flasher shall be mounted in a condition similar details of conditions under which the licence for the use
to the final mounting in the vehicle and shall be of Standard Mark may be granted to manufacturers or
subjected to continuous shower of water at room producers may %e obtained from the Bureau of Indian
temperature for a period of 30 min. Standards.

ANNEX A
(C/atfse 5. 1.2)

RECOMMENDED PLAN OF SAMPLING

A-1 GENERAL A-2.3 These flashers shall be selected at random. In order

If statistical quality control techniques have been used for to ensure randomness, the following procedure may be
production control such test results and relevant charts adopted:
may be made available along with the material supplied
to enable the purchaser to judge the acceptability, or Arrange the flashers in a systematic manner and starting
otherwise ofa lot. In case such information is not available, from any flasher count them as 1, 2, .... etc, up ton r
the following procedure is recommended for judging being equal to the integral part of N/n, N being the lot
conformity of a lot with the requirements of this standard. size and n the sample size. Every rth flasher shall be
included in the sample
A-2 SCALE OF SAMP-LING
A-3 NUMBER OF TESTS
A-2.1 Lot
AI1 the flashers selected under A-2.2 shall be subjected to
In any consignment, all the flashers of the same rating and acceptance tests given in 5.1.2.
from the same batch of manufacture shall be grouped
together to constitute a lot.
A-4 CRITE-RION FOR CONFORMITY
A-2.2 The number of flashers to be selected from a 101 A lot shall be considered as conforming to this standard,
shall depend upon the lot size and shall be in accordance if the number of defects does not exceed the corresponding
with co] 2 and 3 of Tables 5 and 6. number given in Tables 5 and 6.

6
 IS 15730:2006

Table 5 Recommended Plan of Sampling Applicable to

Visual Examination and Performance Test
(Clal/ses A-2.2 ami A-4)
——

T
w Lot Size Sample Size Permissible Number of Permissible Number of’
No. Defective in Visual Test Defective in Performance Test
—
“N II Critical Major Mioor

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

i) 301 to 500 8 () 0 1 1

ii) 501 to I 000 13 I 1 I 2

iii) 1 000 and above 13 1 1 1 2

NOTE — The sample size and permissible number of’ defective for lot size upto 300 shall be as agreed to between the manufacturer and
the purchaser (see Annex B for classification of defects).

Table 6 Recommended PIan of Sampling Applicable

to Life Test(100 h Continuous)
(Clauses A-2.2 andA-4)

sl Lot Size Sample Size Permissible Number of

No. Defective
N n Critical Major Minor
(1) (2) (3) (4) (5) (6)

i) 501 to above 13 1 t 2

NOTE — The sample size and permissible number ofdefectives for

lot size up to 500 shall be as agreed to between the manufacturer
and the purchaser (see Annex B for classificationof defects).
 IS 15730:2006

ANNEX B
(Clause 5.3.8)

CLASSIFICATION OF DEFECTS
, B:l GENRAL
The possible defects as observed during performance tests have been classified according to seriousness of their nature
and are given in Table 7.

Table 7 Classification of Defects in Performance and Life Test

Test Critical Defects Major Defects Minor Defects

(1) (2) (3) (4) “

Performance 1.0 Main contact permanently 1,0 Frequency 1,0 Frequency

‘ON ‘
1. I Frequency at specified 1. I Frequency at specified
2.0 Main contact permanently voltage less than 60 voltage between 60 to 70
‘OFF’ flashes per minute flashes per minute
3.0 Main contact operation 1.2 Frequency at specified 1.2 Frequency at specified
erratic voltage greater than 120 voltage between 100 to
flashes per minute 120 flashes per minute
4.0 Pilot contact permanently
‘ON’ 2.0 Voltage range 2.0 Voltage range
5,0 Pilot contact permanently 2 I Frequency at ‘N volt 2. i Frequency at ‘.4’ volt
‘OFF’ less than 30 flashes per between 30 to 60 flashes
minute per minute
6.0 Pilot contact operation
erratic 2.2 Frequency at ‘B’ volt 2.2 Frequency at ‘B’ volt
less than 30 flashes per between 120 to 150
minute flashes per minute
3.0 Percentage ‘ON’ time 3.0 Percentage ‘ON’ time
3.1 Percentage ‘ON’ to “3.I Percentage ‘ON’ to
total cycle time less than total cycle time between
30 percent 30 to 35 percent
3.2 Percentage ‘N’ to total 3.2 Percentage ‘N’ to total
cycle time greater than cycle time between
30 percent 65 to 75 percent
4.0 Voltage drop 4.0 Voltage drop
4.1 Voltage drop greater than 4.1 Voltage drop between
0.8 V 0.5 to 0,8 V

5.0 Starting time 5.0 Starting time

5.1 Starting time greater 5. I Starting time between
than 1.8 s l,0tol,8s

6.0 Starting load 6.0 Starting load

6.1 Starting load more than 6.1 Starting load more than
a) 6 V Flasher 18 W c) 6 V Flasher 18 W
b) 12 V Flasher 21 W d) 12 V Flasher 21 W

8
Bureau of Indian Standards

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

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without the prior permission in writing of BIS. This does not preclude the free use, in the course of
implementing the standard, of necessary details, such as symbols and sizes, type or grade designations.
Enquiries relating to 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 reviewed
periodically; a standard along with amendments is reaffirmed when such review indicates that no changes are
needed; if the review indicates that changes are needed, it is taken up for revision. Users of Indian Standards
should ascertain that they are in possession of the latest amendments or edition by referring to the latest issue of
‘BIS Catalogue’ and ‘Standards : Monthly Additions’.

This Indian Standard has been developed from Doc : No. TED 11 (455).

Amendments Issued Since ‘Publication

Amend No. Date of Issue Text Affected

BUREAU OF INDIAN STANDARDS

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