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Winding Wires Reference Standards

IS 13778 1993/IEC 851 - 1985Methods of tests for winding wires

IS 13730 1993/IEC 60317 - 1990Specifications for particular types

of winding wires

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IS 13778: Methods of tests

for winding wires Part I 1993 General Part II 1993 Determination of

dimensions Part III 1993 Mechanical properties

Part IV 1993 Chemical properties

Part V 1993 Electrical properties Part VI 1993Thermal properties

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IS 13778 Part 2 (1993)Determination of dimensions

Overall Dimensions

Conductor Dimensions Out of roundness of the conductor for

round wires

Increase in dimensions due to theinsulation

Rounding of corners (For rectangularwires)

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IS 13778 Part 3 (1993)Mechanical Properties

Elongation Test

Flexibility & Adherence Test

Springiness Test

Resistance to Abrasion Test Heat and solvent bonding tests

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IS 13778 Part 4 (1993)Chemical properties:

Solvent Test

Tests for wires for use inrefrigerants

Solder test

Resistance to transformer oil in thepresence of water

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IS 13778 Part 5 (1993)Electrical properties

Break Down Voltage Test

Continuity of Covering

Electrical Resistance Test

Dielectric loss tangent Test

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IS 13778 Part 6 (1993)Thermal properties :

Cut Through Test

Heat Shock Test

Thermal endurance test

Loss of mass High temperature failure test

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IS 13730 Part 0 / Section 1 -- 1993 General

requirements, Enamelled round copperwire

Part 0 / Section 2 -- 1993 Generalrequirements, Enamelled rectangularcopper wire

Part 0 / Section 3 -- 1993 General

requirements, Enamelled roundaluminium wire Part 0 / Section 4 -- 1993 General

requirements, Glass fibre wound bare orenamelled rectangular copper wire

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IS 13730 Part 0 / Section 1 --

1993 Dimensions:Diameter Tolerance 1%

Out of roundness Tolerance 1%

Flexibility and Adherence Test :

a) Mandrel winding Test (For ConductorDiameter up to and including 1.6 mm)

--

20%

Elongation beforewinding on mandrel

D1.60.05

0.15mm0.05--

Up to and IncludingOver

MandrelDiameter

Diameter of conductor in mm

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1993b) Stretching Test (For Conductor

Diameter over 1.6mm)

The coating shall show no cracksafter the wire has been elongated32%

c) Jerk Test (For Conductor Diameterup to and including 1 mm)

The coating shall show no cracks

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1993 c) Peel Test (For Conductor

Diameter over 1mm)

The coating shall show no loss ofadhesion after the specimen hasbeen subjected to the number of

revolutions R whereR=K/d (K constant, d- diameter)

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1993

36543543.15

343.152.5

332.51.8

321.81.25

311.251.12

270.630.56

301.120.9

290.90.8

280.80.63

260.560.5


%Elongation

(Min)

Diameter of Conductor in mm

Elongation Test

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1993 Heat Shock Test:

a) Conductor Diameter up to andincluding 1.6 mm

3D0.160.04

3D1.61

2D10.25

4D0.250.16

0.15mm0.04--

Up to and IncludingOverMandrel Diameter


D is diameter of conductor

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1993b) Conductor Diameter over 1.6 mm:

The sample shall be elongated by25%

Testing temperature will be given inrelevant standards.

Resistance to solvents:

Using a pencil of hardness H, thecoating shall not be removed.

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1993 Continuity of Insulation:The number of faults in 30meters wire shall

not exceed the values given in table

240.080.05

51.60.125

150.1250.08

240.05--

Up to and IncludingOverMax. faults


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1993Dimensions:

Tolerance

0.11612.5

0.0712.56.3

0.056.33.150.033.15--

Up to and IncludingOverTolerance mm

Width or Thickness in mm

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1993Dimensions Corner Radius

0.51.61

15.63.55

0.83.552.24

0.652.241.6

0.5*T1--


Corner radius

in mm 25%

Thickness of conductor in mm

T is thickness of conductor

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1993 Increase in Dimensions:

0.160.112

0.11--1

MaximumMinimum

Increase in Dimensions (mm)

Grade

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1993 Electrical Resistance:

The method used to find Electrical

Resistance shall provide anaccuracy of 0.5%

Resistivity shall be less than

1/58mm2

/m Springiness:

Maximum spring back is 5 Degrees

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1993 Elongation:

325.62.5

302.5--


Minimum

%Elongation

Thickness of conductor in mm

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1993 Flexibility and Adherence Test

a) Mandrel Winding Test

b) Adherence Test: The wire shall bestretched by 15%. The distance of loss

of adhesion shall be less than 1xwidth.

4xthicknessAll sizesThickness

5xwidthOver 10mm

4xwidthSize up to and including 10mmWidth

Mandrel diameterWire bent on

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1993 Heat shock Test:

The coating shall show no cracks

after the wire has been bent flatwise on a mandrel with a diameterof six times the thickness.

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1993 Break Down Voltage

150020002

75010001

At ElevatedTemperature

At RoomTemperature

Minimum B.D.V in Volts

Grade

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1993 Dimensions:

Tolerance 1% Flexibility and Adherence Test :

a) Mandrel winding Test (For Conductor Diameterup to and including 1.6 mm)

Mandrel Diameter shall be 3x Diameter ofwire

b) Stretching Test (For Conductor Diameter over1.6mm)

The coating shall show no cracks after thewire has been elongated 15%

c) Jerk Test (For Conductor Diameter up to andincludin 1 mm)

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1993

1210.4

1552

1521

100.4--Up to and IncludingOver

%Elongation

(Min)

Diameter of Conductor in mm

Elongation Test

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1993 Continuity of Insulation:The number of faults in 30meters wireshall not exceed the values given in table

101.6--

Up to and IncludingOverMax. faults


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13730 Part 0 / Section 4 --

1993Increase in Dimensions due to insulation

0.610.380.480.280.450.270.320.181612.5

0.560.360.440.270.410.250.280.1612.56.3

0.520.340.380.250.370.220.220.146.33.15

0.480.310.360.240.320.200.200.133.15--

MaxMinMaxMinMaxMinMaxMinUp to andincluding

Over

DoubleCovering

SingleCovering

DoubleCovering

SingleCovering

Glass fibre wound over grade

2 enamelled conductor

Glass fibre wound over bare

conductor

Increase in Dimensions (mm)Nominal

Width of

theConductor

(mm)

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13730 Part 0 / Section 4 --

1993 Flexibility and Adherence Test

a) Mandrel Winding Test

b) Adherence Test: The wire shall bestretched by 10%. There shall be no lossof adhesion of the fibre covering.

10xthicknessAll sizesThickness

15xwidthOver 8mm

10xwidthSize up to and including 8mmWidth

Mandrel diameterWire bent on

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1993 Break Down Voltage

2000Double Covering

1500Single CoveringGrade 2enamelled wire

with

560Double Covering

350Single CoveringBare conductorwith

B.D.V (min) in VoltsType of Insulation

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IS 13730 Specifications for particular

types of winding wires Part 1 - 1993 Polyvinyl acetal enamelled

round copper wire, class 105

Part 2 1996 Solderable polyurethaneenamlled round copper wire, class 130with a bonding layer.

Part 3 1996 Polyester enamelled

round copper wire, class 155 Part 4 - 1993 Solderable polyurethane

enamelled round copper wire, class 130

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types of winding wires Part 6 - 1994 Oleo-resinous enamelled

round aluminium wire, Class 180

Part 7 - 1993 Polyimide enamelledround copper wire Class 220 Part 8 - 1996 polyesterimide enamelled

round copper wire class 180

Part 9 1994 Polyester enamelledround aluminium wire, Class 130

Part 13 - 1993 Polyester orpolyesterimide over coated with

polyamide-imide enamelled round

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types of winding wires Part 15 1994 Polyesterimide

enamelled round aluminium wire, Class180

Part 16 - 1996 Polyester enamelledrectangular copper wire, Class 155

Part 17 - 1996 Polyvinyl acetal

enamelled rectangular copper wire,Class 105 Part 20 1993 Solderable polyurethane

enamelled round copper wire, Class 155

Part 26 1996 Polyamide-imide

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types of winding wires Part 27 1996 Paper covered rectangularcopper wire

Part 28 - 1997 Polyesterimide enamelled

rectangular copper wire, Class 180 Part 29 - 1997 Polyester or polyesterimideover coated with polyamide-imide enamelledrectangular copper wire, Class 200

Part 31 1997 Glass-fibre wound, polyesteror polyesterimide varnish- treated, bare orenamelled rectangular copper wire,temperature index 180

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types of winding wires Part 32 1997 Glass-fibre wound, polyesteror polyesterimide varnish-treated, bare orenamelled rectangular copper wire,temperature index 155

Part 33 1997 Glass-fibre wound, siliconevarnish-treated bare or enamelledrectangular copper wire, temperature index200

Part 34 2000 Polyester enamelled roundcopper wire, Class 130 (first revision)

Part 45 1999 Polyester enamelled round

copper wire , class 130

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IS 13730 Part 1 - 1993 Polyvinyl acetal

enamelled round copper wire, class 105 Peel Test:

Revolutions R=K/d (K constant, d is

diameter)Constant K= 175

Heat shock test:

Heat shock temperature is 155C Cut Through test:

No failure shall occur within 2 min at 170C

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IS 13730 Part 8 1996 Polyesterimideenamelled round copper wire class 180

Peel Test:



Heat shock test:



IS 13730 Part 13 1993 Polyester or

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IS 13730 Part 13 1993 Polyester orpolyesterimide over coated withpolyamide-imide enamelled round copper

wire, Class 200 Peel Test:



Heat shock test:



enamelled rectangular copper wire

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enamelled rectangular copper wire,Class 155

Heat shock test:

Heat shock temperature is 175C

IS 13730IS 13730 Part 17 1996Part 17 1996 Polyvinyl acetalPolyvinyl acetalenamelled rectangular copper wire, Classenamelled rectangular copper wire, Class

105105

Heat shock test:Heat shock test:Heat shock temperature is 175Heat shock temperature is 175CC

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IS 13730 Part 27 1996 Paper coveredrectangular copper wire

Dimensions:

Increase in dimensions due to the paper

covering

-7.5 to 042

-5 to 0164

-10 to 02--


Tolerance %

Increase in dimensions due to thepaper covering in mm

IS 13730 Part 34 2000 Polyester

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IS 13730 Part 34 2000 Polyesterenamelled round copper wire, Class 130(first revision)

Peel Test:



Cut Through test:

No failure shall occur within 2 min at240C


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IS 13730 Part 34 2000 Polyesterenamelled round copper wire, Class 130(first revision)

Heat shock test:

Heat shock temperature is 155C Conductor Diameter up to and including 1.6 mm

For Conductor Diameter over 1.6 mm

Sample shall be elongated by 10%

3D0.160.05

7D1.616D10.25

4D0.250.16

0.15mm0.05--

Up to and IncludingOver Mandrel Diameter


D is overall diameter of conductor

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enamelled round copper wire, Class 130 Peel Test:



Heat shock test:



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Paper Covered Alluminium

Conductors Reference Standards:

IS 6162 (Part 1) 1971 :

Specifications for Paper CoveredAlluminium Round Conductors.

IS 6162 (Part 2) 1971 :

Specifications for Paper CoveredAlluminium RectangularConductors.

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IS 6162 (Part 1) 1971 Test Condition Dimensions Tolerance: 1%

Resistivity : 0.028mm2/m

-7.5 to 01.30.5-5 to 0161.3

-10 to 00.50.25


Tolerance %Increase in dimensions due to thepaper covering in mm

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IS 6162 (Part 1) 1971Tensile Strength:

Minimum: 69MN/m2

Maximum: 100MN/m2

%Elongation: 15 (min)

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IS 6162 (Part 2) 1971 Test Condition Dimensions Tolerance:

Resistivity : 0.028mm2/m

-7.5 to 01.30.5-5 to 0--1.3

-10 to 00.50.25



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IS 6162 (Part 2) 1971Tensile Strength:

Maximum: 100MN/m2

%Elongation: 25 (min)

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Paper Covered Round

Copper Conductors Reference standard:

IS 7404 (Part 1) 1991

This standard covers therequirements and tests for roundcopper conductors covered with

two or more layers of paper.

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IS 7404 (Part 1) 1991 Dimensions:

Conductor Tolerance : 1%

-7.5 to 01.30.5-5 to 0--1.3

-10 to 00.50.25



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COPPER WIRE RODS Reference standard:

IS 12444 - 1988

This standard covers therequirements of EC grade copperrod up to 18mm diameter.

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IS 12444 - 1988 Chemical Composition:

Note:Reference standard IS 440-1964

0.03Total of all impurities except oxygen (Max)

0.005Lead (Max)

0.001Bismuth (Max)

99.90Copper + Silver (min)

PercentElement

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IS 12444 - 1988Tolerance on Diameter:

0.7129

0.91812

0.596

Up to and IncludingOverTolerance in mmDiameter in mm

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IS 12444 - 1988 Mechanical Properties :

Tensile Test

200205

210

Tensilestrength

(MPa) min

40129461812

3296

Up to and IncludingOver%Elongation

(min)Diameter in mm

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Alluminium Rod Reference standard:

IS 5484 - 1997

This standard covers therequirements of EC gradealluminium rod of 7.6mm & 9.5mm

diameter.Tensile Strength : 65 to 100MPa

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IS 5484 - 1997 Resistivity at 20C : 0.028264 (max) Conductivity : 61% (min)

Dimensions Tolerance:

Sampling : For every coil

Tolerance in mmDiameter in mm

0.59.5

0.47.6

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Glass Fibre covered Round

Copper wire Reference Standard:

IS 11184-1984

This standard covers requirementsof round copper wires coated withenamel and covered with single or

double glass fibre.

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IS 11184-1984

1350130041.6

130012501.61.32

125012001.321.12

120011501.120.95

115011000.950.85110010500.85--

MinMinUp to andincluding

Over

Double CoveringSingle Covering

Break down voltage (Volts)Nominal

Diameter of theConductor (mm)

Flexibility : 10xdiameter Mandrel

Break Down Voltage

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IS 11184-1984

0.30.25--43.35

0.250.2--3.352

0.20.150.1250.0852--

MaxMinMaxMinUp to andincluding

Over

Double CoveringSingle Covering

Glass fibre wound over grade 2 enamelledconductor

Nominal

Diameter of the

Conductor (mm)

Increase in Dimensions due to fibreIncrease in Dimensions due to fibre

glass insulation (mm)glass insulation (mm)

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Dry-Type PowerTransformers

Reference standard: IS 11171 1985

IEC 726 1982

This standard applies to Dry-TypePower Transformers having values ofhighest voltage for equipment up toand including 36KV.

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IS 11171 1985Section 1 - General

Section 2 - Rating

Section 3 - Cooling methods and

Temperature rise

Section 4 - Insulation Levels

Section 5 - Tests Section 6 - Enclosures

IS 11171 1985 (S ti

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IS 11171 1985 (Section1)

Types of Dry-Type Power Transformers

a) Sealed Dry-Type Transformers

b) Totally Enclosed Dry-TypeTransformers

c) Enclosed Dry-Type Transformers

d) Non-Enclosed Dry-Type Transformers

IS 11171 1985 (S ti

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IS 11171 1985 (Section1)

Service Conditions:

Altitude : height above MSL notexceeding 1000m

Ambient Temperature

Terminal markings, tappings andconnections :

As specified in IS 2026 (Part 4)-1977

Preferred taps are 5% in steps of

2.5%

IS 11171 1985 (S ti

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IS 11171 1985 (Section2)

Rating : Same as IS 2026 (Part 1)-1977

Operation at other than ratedvoltage: The transformer can beoperated at its rated KVA at any

voltage with in 10% Rated frequency: 50Hz 1.5

Rating Plate

IS 11171 1985 (S ti

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IS 11171 1985 (Section3)

Identification according to coolingmethod:

Kind of cooling medium SymbolAir A

Gas G

Kind of circulation SymbolNatural N

Forced F

IS 11171 1985 (S ti

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IS 11171 1985 (Section3)

Temperature rise limits:

50

65

70

90

115

140

A

E

B

F

H

C

Winding

TemperatureRise (C)

Temperature

Class of Insulation

Part

IS 11171 1985 (Section

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IS 11171 1985 (Section4)

Insulation Levels:

--

40

60

7595

125

170

3

10

20

2838

50

70

1.1

3.6

7.2

1217.5

24

36

Lightning impulsewithstand voltage (KV)

power frequencywithstand voltage (KV)

Voltageclass


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IS 11171 1985 (Section5)

Tests:

Classification of Tests:

a) Type Tests

b) Routine Tests

c) Special Tests


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IS 11171 1985 (Section5)

Type Tests Measurement of winding

resistance Measurement Voltage ratio and

check of voltage vectorrelationship

Measurement of impedancevoltage, short circuit impedanceand load loss

Measurement of no-load loss and


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IS 11171 1985 (Section5)

Type Tests

SSVW test

IOVW test Lightning impulse test

Temperature rise test


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IS 11171 1985 (Section5)

Routine Tests

Measurement of winding resistance

Measurement Voltage ratio and check ofvoltage vector relationship

Measurement of impedance voltage, shortcircuit impedance and load loss

Measurement of no-load loss and currentSSVW test

IOVW test


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IS 11171 1985 (Section5)

Special Tests

Partial Discharge measurement

Measurement of acoustic soundlevel

Short Circuit Test

Documents

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