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मानक
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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.
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“Step Out From the Old to the New”
Mazdoor Kisan Shakti Sangathan
Jawaharlal Nehru
IS 11395 (1985): Tape wrapped round copper wires with
temperature index of 220 [ETD 33: Winding Wire]
“!ा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”
( Reaffirmed 2005 )
IS:11395 -1985
Indian Standard
SPECIFICATION FOR
TAPE WRAPPED ROUND COPPER WIRES
WITH TEMPERATURE INDEX 220
.
Winding
Wires Sectional
Chairman
SHRI P. GHOSH
Committee,
ETDC
33
Representing
Indian Cable Co Ltd. Jamshedpur
Members
Da P. R. MUKHERJEX ( Alternate
Shri P. Ghosh )
SHRI A. R. BANERJEE
Saar D. H. MEHTA ( Alternate 1
SERI
S. B. BAPAT
.
SHRI N. S. SHETH (Alternate)
DR 0. P. CHABRA
SHRI B. RAMAN ( Alternate I )
SRRI S. AMEERJAN ( Alternate II
SERI S. G. DESHMUKH
SHRI A. R. SALVI ( Alternate )
SHRI K. L. GARG
to
Devidayal
Electronics
& Wires Ltd, Bombay
Dr Beck & Co ( India ) Ltd, Pune
Bharat Heavy Electricals Ltd, Hyderabad
)
Bharat Bijlee Ltd, Bombay
Directorate
General of Supplies
( Inspection Wing ), New Delhi
&
Disposals
SERI J. S. PASSI ( Alfernate )
Kirloskar Electric Co Ltd, Bangalore
SERI P. N. HIRIYANNAIAH
SHRI G. UMESH ( Alternate )
Designs & Standards
Organization,
JOINT DIRECTOR STANDARDS BLED/8 Research,
Lucknow
DIRECTORADDITIONAL
STANDARDS ( ELECTRICAL ) B-2 ( Alternate )
Wandleside National Conductors Ltd, Puns
SERI A. H. KULKARNI
SHRI V. M. JOSRI ( Alternate I )
SBRI A. G. BHANDARI ( Alternate II )
Electrical Research & Development
Association,
DR T. R. LAKSHMINARAYAN
Vadodara
~ Directorate General of Technical Development,
SHRI D. B. MALIK
New Delhi
SHRI L. GOPALAKRISHNAN ( Alternate )
Shakti Insulated Wires Pvt Ltd, Bombay
Saab D. D. MEHTA
SERI S. NAQAKAJA~ ( Alternate )
( Continnedon page 2 )
0 Copyright 1986
INDIAN STANDARDS
INSTITUTION
This publication
is protected under the It&n Copyright Act ( XIV of 1957 ) and
reproduction in whole or in part by any means except with written permission of the
publisher shall be deemed to be an infringement of copyright under the said Act.
-1
IS : 11395- 1985
( Confinucd from
page1 )
Representing
Members
SHRI S. MITRA
DR V. K. TIKKU ( Alternnte )
National
Insulated
Calcutta
National
SHRI B. MUIUIOPADHYAY
SHRI SAHATH KUMAX ( Alternate )
SHRI J. NAQESH BHATT
SHRI K. MOHAN RAO (Alternate)
SHaI D. H. PA1
SERI P. F. PARIKH
SHRI M. CHOUDIUJRY ( Alternate
SHBI P. F. PARIKH
Cable
Co
of
India
Ltd,
Test House, Calcutta
Indian Telephone
Industries Ltd, Bangalore
Asian Cables Corporation Ltd, Bombay
Monopols Chemicals (P) Ltd, Bombay
)
Winding
Wires Manufacturers’
Association
India, Bombay
of
PROB N. SEN ( Alternate)
NGEF Ltd, Bangalore
SHRI JAQANNATEA RAO ( Alternate )
Jyoti Ltd, Vadodara
SHRI P. L. PARDHAN
SHRI B. G. SHARXA ( Alterntc )
of Standardization,
Ministry
Directorate
SHRI R. N. PRAMANIK
Defence, New Delhi
MAJ P. K. MAQO ( Alternate )
Peico Electronics & Electricals Ltd, Bombay
SRR1Y.K.
SHAH
SHRI S. GEOSHMAJUXDAR (Alternate)
Bharat Electronics Ltd, Bangalore
SHRI R. SOMABEKHARA
SHRI M. R. RAN~AOHARI ( Alternate )
Director General, ISI ( Ex-o$cio Member)
SHRI S. P. SACHDEV,
Director ( Elec tech )
SHRI R. P. PATIL
Secretary
SHRI V. DEWAN
Deputy Director ( Elec tech ), ISI
2
of
IS:11395-1985
Indian Standard
SPECIFICATION FOR
TAPE WRAPPED ROUND COPPER WIRES
WITH TEMPERATURE INDEX 220
0.
0.1 This
Indian
Standard
Institution on 17 September
Wires Sectional Committee
Division Council.
FOREWORD
was adopted
by the Indian
Standards
1985, after the draft finalized by the Winding
had been approved by the Electrotechnical
0.2 This standard
relates to polyimide
suitable for temperature
index 220.
0.3
This standard
relates
tape
wrapped
round
conductors
to IS : 9148-1979*.
0.4 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, shall be rounded
off in accordance
with IS : 2-19607.
The number
of significant
places retained
in the
rounded off value should be the same as that of the specified
value
in this standard.
1. SCOPE
1.1This standard relates to polyimide
suitable for temperature
index 220.
tape
wrapped
round
conductors
1.2 The tape shall be coated with a suitable
adhesive ( for example,
FEP ). After
wrapping,
the tape shall be heat
sealed
to form a
continuous and adherent sheath.
It should be coated with adhesive on
one side only.
1.3 The requirements
of the standard
from 1-O mm to 5.0 mm diameter.
are applicable
*Specification for tape wrapped rectangular
and
temperature index of 220.
*Rules for rounding off numerical values ( revised ).
3
square
to conductor
copper
sizes
wires with
a
IS : 11395- 1985
ti4ur;e;des
grades
-Three
of Coverings
of coverings
specified
are
coverings
are
a) Fine (F),
b) Medium
(M), and
c) Thick (T).
In each
specified.
category,
single
tape
and double
tape
2. TERMINOLOGY
2.0 For the purpose of this standard, the following definitions shall apply.
2.1 Wire-
The insulated material
2.2 Conductor
covering.
-
The
bare
as received.
metal
after
removal
of
the insulation
2.3 Increase
in Diameter Due to Covering - The difference between
the overall diameter of the wire and diameter of the conductor.
- The permissible
2.4 Tolerance
from that prescribed.
3. GENERAL
TEST
divergence
of an
actual
magnitude
CONDITIONS
3.1 Unless otherwise specified all tests shall be carried out within a
temperature
range of 15 to 35°C and a relative humidity range
of 45 to 75 percent.
Before measurements are made, the specimens shall
be preconditioned under these atmospheric conditions for a time sufficient
to allow specimens to reach stability.
3.2 The wire to be tested shall be removed from the packaging in such a
way that the wire should not be subjected to tension or unnecessary
bends.
3.3 Before each test, sufficient wire shall, be discarded to ensure that any
damaged wire is not included in the test specimens.
3.4 When no specific
applicable to all sizes.
range
of sizes is given
4
for
a test, the test is
IS : 11395 - 1985
4. CONDUCTOR
4.1 The conductor shall conform to 3.1 of IS : 4800 (Part
except for springiness which is under consideration.
5. APPLICATION
OF TAPE
COVERING
5.1 Before covering, the conductors shall be completely
defects like burrs, copper dust, etc.
5.2 Arrangement
1 )-1968*
free from surface
of Layers
5.2.1 Either one or two layers of tape may be applied.
5.2.2 The tape shall be wrapped on the conductor, tightly, evenly and
free from creases or wrinkles, with the adhesive on the inside when one
side coated.
5.2.3 The tape shall be applied with an overlap of 45 to 50 percent
and when two layers are used they shall be applied in the opposite
direction and displaced by approximately 25 percent ‘of the tape width.
5.2.4 After wrapping, the tape shall be heat sealed by suitable means
to form an adherent and continuous sheath.
5.3 Overall
diameter
and increase in diameter.
5.3.1 The maximum overall diameter and increase in diameter due to
covering shall be in accordance with Table 1.
The overall diameter shall not exceed the maximum diameter
permitted for the.conductor plus the maximum values given in Table 1.
TABLE
GRADE OB
COVERING
(1)
Fine (F)
Medium (M)
Thick (T)
1 INCREASE
IN DIAMETER
DUE
INCREASE IN DIA DUE TO
SINQLE TAPE COVERING
~-----*_---~
Max
Min
COVERING
INCREASE IN DIA DUE TO
DOUBLE TAPE COVEEIN~
r_--_-*_-__
Min
Max
(2)
(3)
(4)
(5)
mm
mm
mm
mm
0’080
0.150
0.240
0’160
0’250
0.360
0’160
0300
0.480
0.320
0500
0.720
shall not exceed
NOTE - The overall diameter
permitted for the conductor plus maximum values.
*Specification
TO
for enamelled
round winding wires
5
the
maximum
: Part 1 Conductor data.
diameter
ES .: 11395 - 1985
5.4 Flexibility
and Adherence
5.4.1 FlexibiliQ Mandrel Winding Test - The covering
shall show no
opening
or delamination
when examined
under diffused light by the
normal eyesight, after having been wound on a mandrel with a diameter
as specified in Table 2.
TABLE
Y------Over
2
MANDREL
DIAMETER
MANDREL
DIAMETER
NOMINAL CONDUCTOR
DIAMETER, mm
h______~
Up to and
Including
-
3.00
5.00
3.00
4-d
5d
5.4.2 Adherence - The distance of loss of adhesion shall not be more
than 5 x conductor
diameter for sizes up to and including
3 mm and
The insulated wire shall be
3 x conductor
diameter
above 3.00 mm.
stretched to 15 percent in case of single tape and 10 percent in case of
For test
double tape lapped conductor at a stretch rate of 1 to 5 mm/s.
method refer to IS : 3855 ( Part 2 l-1979*
5.5 Heat Shock - The covering shall show no opening or delamination
when prepared as in 5.4.1 and subjected to a temperature
of 240 to 245°C
for 30 minutes.
The
breakdown
voltage
test shall be
5.6 Breakdown
Voltage
At least
carried out on five samples in accordance
with Apppendix
A.
four out of the five samples shall not breakdown
at vohage less than those
given in Table 3 and the fifth sample shall not breakdown
at the voltage
less than 50 percent of the value specified.
TABLE
GRADE OF
COVERINQ
3
BREAKDOWN
VOLTAGE
Min BREAKDOWN VOLTAGE V rms
*--_-----~
r--------Double Tape
Single Tape
Fine (F)
i 000
3 000
Medium (M)
3 000
5 000
Thick (T)
4 000
7 000
‘Specification for rectangular and square enamelled copper conductors : Part 2
Methods of tests (i;rsr reuision ).
6
IS : 11395- 1985
6. PACKING
AND
MARKING
shall
be tightly
and
evenly
wound
or reels
6.1 The
wire
(see IS : 482-1968* ) in such a direction that when unrolled, the exposed
edge of the overlap of the outer layer of the paper is towards the reel.
- 6.1.1 The label which is to be securely attached
the following information:
a) Manufacturer’s
to the reel shall have
name or trade-mark;
b) Grade of covering;
c) Nominal conductor
diameter;
d) Increase in diameter due to covering;
e) Weight of wire ( gross and net ); and
f) Number of lengths, if there is more than one length of wire in
one reel.
6.1.2 When more than one length of wire is wound on the same reel,
the different lengths shall not be anchored with each other, but other
strips of paper having colour distinctly different from that of the paper
covered conductor shall be placed beteen two adjacent lengths to mark
the start of the next length.
6.1.3
The label may also be marked with the IS1 Certification
Mark.
NOTE - The use of the IS1 Certification Mark is governed by the provisions of
the Indian Standards Institution ( Certification
Marks ) Act and the Rules and
Regulations made thereunder.
The IS1 Mark on products covered by an Indian
Standard conveys the assurance that they have been produced to comply with the
requirements of that standard under a well-defined system of inspection, testing and
quality control
which is devised and supervised by IS1 and operated by the
IS1 marked products are also continuously checked by IS1 for conformity
producer.
Details of conditions under which a licence
to that standard as a further safeguard.
for the use of the IS1 Certification
Mark may be granted to manufacturers or
processors, may be obtained from the Indian Standards Institution.
APPENDIX
A
( Clause 5.6 )
BREAKDOWN
VOLTAGE
A-l. TEST VOLTAGE
A-l.1 The test voltage shall be alternatingand
of a nominal frequency
of 50 Hz and approximately sinusoidal, the peak factor being within the
*Specification
for reels for covered,
round electrical
7
winding wires ( third revision ).
Is-s 11395- 1985
limits ofdrf
5 percent ( 1’34 to l-48 ). The test transformer should
have a rating of at least 500 VA and should provide a current of
The test
essentially undisturbed wave form under test conditions.
transformer shall have a trip current setting of not more than 5 mA.
A-1.2 The voltage is applied at zero and increased at a uniform rate
In the event of breakdown
of 100 V per second until breakdown occurs.
occurring in less than 5 seconds, the rate of increase of voltage shall be
reduced.
Where the breakdown voltage is equal to or greater
the rate of rise of voltage shall be 500 V per second.
than 250 V,
A-2. METHOD
A-2.1 The test specimen shall be similar to mandrel winding test, the
difference being, the diameter of the mandrel shall be 10 times the
diameter of the wire.
The test specimen shall be imersed in a metal container which shall
be filled, with nickel shot, nickel plated shot or stainless steel ball
hearings not more than 2.0 mm in diameter maintained in a clean
condition by washing it, for example, in trichloroethylene.
The two ends of the specimen shall be made sufficiently long so that
they are well above the metal shot surface.
A-2.2 The test voltage shall be applied between the bare conductor and
metal shots ( which are earthed ).
’