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INSPECTION AND TEST PLANFO R

OIL FILED TRANSFORMERS

S TA N D A R D S P E C I F IC AT I O N N O .

6-81-1041 Rev. 2P a g e 1 o f 5

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INSPECTION AND TEST PLAN

FOROIL FILLED TRANSFORMERS

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INSPECTION AND TEST PLANFO R

OIL FILED TRANSFORMERS

STANDARD SPECIFICATION NO.

6-81-1041 Rev. 2Page 2 of 5

Abbreviations

ASBASEEFA

BISCCE or CCOECELLCIMFRC EDFTDTDPTERTL

FCRIFMFLPHICPIPIPICIGCIE CJECLPT

: Alloy Steel: British Approval Service for Electrical Equipment in Flammable

Atmospheres: Bureau of Indian Standards

Chief Controller of ExplosivesCertification Engineers International LimitedCentral Institute of Mining & Fuel ResearchCarbon EquivalentDry Film ThicknessDestructive TestingDye Penetrate TestingElectronics Regional Test Laboratory

:

Fluid Control Research InstituteFactory Mutual: Flame Proof

Hydrogen Induced CrackingInspection and Test Plan

: Ingress ProtectionInspection Certification

: Inter Granular Corrosion: International Electro technical Commission

Japanese Electro technical Committee: Liquid Penetrate Testing

MPT/MTMRT

MTCMO CNPSHNDTNEMAPOPESOPQRPR

PMIPV CQCRTTCTPI or TPIAUTULVDRWPSWPQXLPE

Magnetic Particle TestingMechanical Run Test

Material Test CertificateMaterial of ConstructionNet Positive Suction HeadNon Destructive TestingNational Electrical Manufacturers AssociationPurchase OrderPetroleum Explosive Safety OrganizationProcedure Qualification RecordPurchase Requisition

Positive Material IdentificationPoly Vinyl ChlorideQuality ControlRadiography TestingTest CertificateThird Party Inspection AgencyUltrasonic TestingUnder writer LaboratoriesVendor Data RequirementWelding Procedure SpecificationWelders Performance QualificationCross Linked Poly Ethylene

Inspection Standards Committee

Convenor : Mr. A.K. Chaudhary

Members:Mr. S.C. Gupta Mr. RK Singh Mr. MP Jain (Projects)Mr. G. Suresh Mr. Rajeev Kumar Mr. G. Poomachandra Rao

Format No. 8-00-0001-F7 Rev. 0 Cop yright EIL — All rights reserved

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I N S PE C T I O N A N D T E S T P L A NFO R

O I L F I L E D T R A N S F O R M E R S

S TA N D A R D S P E C I F IC AT I O N N O .

6-81-1041 Rev. 2Page 3 of 5

1.0 SCOPE

This Inspection and Test Plan covers the minimum testing & inspection requirements of Oil filled power/distribution Transformers.

2.0 REFERENCE DOCUMENTS

PO/PR & Standards referred there in /Job specifications / Approved documents.

3.0 INSPECTION AND TEST REQUIREMENTS

SLNO.

STAGE/ ACTIVITY CHARACTERISTICSQUANTUMOF CHECK

RECORDSCOPE OF INSPECTION

SUBSUPPLIER

SUPPLIER EIL/TPIA

1.0 Procedures -- -- -- -- -- --

2.0 Material Inspection

2.1

Incoming material likeCopper conductor,Insulation material,laminations, TransformerOil etc.

Check of Physical, Chemical and Electricalproperties. 100%

Material TestCertificates /Test records

H H/RR

(For majoritems only)

Bought out accessories likeMarshalling box, Relays,Current Transformer

Review of Manufacturer's test certificates.Functional check on accessories.

Material Test2 .2

MOG, Bushings andInsulator, PRVs andOLTC.

Degree of protection, IR,HV for Marshalling box100% Cel Li flbctICS /

Test recordsH H/R R

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INSPECTION AND TEST PLANFOR

OIL FILED TRANSFORMERS

S TA N D A R D S P E C I F IC AT I O N N O .

6-81-1041 Rev. 2

Page 4 of 5

SLN O .

STAGE/ ACTIVITY CHARACTERISTICSQUANTUMOF CHECK

RECORDSCOPE OF INSPECTION

SUBSUPPLIER

EIL/TPIAUPPLIER

3.0 Inprocess Inspection

3.1Tank and radiatorfabrication(Before painting)

DimensionalPressure test, one of each typeVacuum test, one of each type

100% Test Records H H R

4.0 Final Inspection

4.1Transformer (RoutineTests)

Physical Verification, Dimensional Check andverification of BoM

Voltage ratio and PolarityVoltage vector relationshipWinding resistanceInsulation resistance before and After H.VPolarization IndexMagnetic Balance testNo load loss and CurrentImpedance voltage/Short circuit impedance(Principal tapping) and load lossInduced over voltageSeparate Source Voltage Withstand Test.

Tests on OLTC/control panel (if applicable)111 ,/, IR and Functional Test on Marshalling BoxOil rzakagetnessute rest/BDV on transformer oilMeasurement of Power taken by fans and oilpumps. (On sample basis for one transformer)Noise Level.Tan Delta.

100% recordsInspection test - H 11/W

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I N S PE C T I O N A N D T E S T P L A NFO R

O I L F I L E D T R A N S F O R M E R S

STANDARD SPECIFICATION NO.

6-81-1041 Rev. 2Page 5 of 5

SLNO.

STAGE/ ACTIVITY CHARACTERISTICSQUANTUMOF CHECK

RECORDSCOPE OF INSPECTION

SUB EIL/TPIAUPPLIERSUPPLIER

4. 2Transformer (Type andSpecial Tests)

Temperature rise.Dissolved Gas Analysis( As Applicable)Impulse withstand testShort circuit level a) Through fault

b) Primary TerminalsDegree of protection for Marshalling Box,Cable box , Transformer Adaptor Chamber etc.

One samplefrom eachtype/rating

Inspection testrecords - H

5.0 Painting

5.1 Painting of TransformersPre treatment, primer and final paint, shade,

thickness100% Test records - H --

6.0 Documentation and IC

6.1 Documentation and IC • Review of Internal Test Reports.IC issuance

100%

Supplier's TestRecords /Inspection

Certificate (IC)

- H H

* Only those Type/Special Tests as specified in the Specifications/ Data Sheet will be witnessed by EIL/TPIA Otherwise Supplier to submit Type Tested Reports for reviewby EIL/TPIA

Legends: H- Hold (Do not proceed without approval), Random -10% , R-Review, RW-Random witness, W- Witness (Give due notice, work may proceeda e s cheduedda e

NOTES (As applicable):Wherever W/R or H/W is indicated, Inspection Engineer shall decide the option to be exercised for the particular stage and supplierIn case of conflict between purchase specification, contract documents and TIP, more stringent conditions shall be applicable.

This document describes generally the requirements pertaining to all types of the item. Requirements specific to PO and the item are only applicable.Acceptance Norms for all the activities shall be as per PO/PR/ Standards referred there in/ Job specifications /Approved documents

Copyright El L— A l lrights reservedormat No. 8-00-0001-F7 Rev. 0