CENTRAL POWER RESEARCH INSTITUTESWITCHGEARTESTING& DEVELOPMENTSTATION.

GOVINDPURA, BHOPAL -462 023, INDIAPhone: +91(0)7552586682 Fax: +91 (0)7552587774

NI\B..KX:REDTED

Sheet1 of~

Test Report No

TEST REPORT

2005/STN-1/172 Dated :1 0 JUl Z005

Name and Address of the Client M/s Supreme Power Equipments,23-A, Ganesh Nagar,Alappakkam, Porur,Chennai - 600116, Tamil Nadu (India)

Name and Address of the Manufacturer M/s Supreme Power Equipments,23-A, Ganesh Nagar,Alappakkam, Porur,Chennai - 600116, Tamil Nadu (India)

Particulars of Sample(s) Tested 1500kVA, 33/0.69kV, Transformer

Condition of sample(s) on receiptTypeDesignationSerial Number(s)Number of Sample(s) TestedDate(s) ofTest(s)CPRI sample code number(s)

NewConventionalDistributionSPE/1748One27'hJune, 2005STDSST205S0751

Particulars of test(s) conducted Routine Tests:-

(i) Measurement of winding resistance at tap Nos. 3 (Principal)and 5 (Lowest).

(ii) Measurement of voltage ratio and check of voltagevector relationship.

(Hi) Measurement of impedance voltage/short circuit impedanceand load loss at tap Nos. 3 (Principal) and 5 (Lowest).

(iv) Measurement of no load loss and current.(v) Measurement of insulation resistance.(vi) HV (dry) power frequency withstand test.As per Clause 16.2, 16.3, 16.4, 16.5, 16.6, 16.7 of IS:2026(Part-1), 1977 & Clause No. 10 & 11 of IS:2026 (Part-3), 1981Nil

Nil

Nil

Test(s) in accordance withStandard/specificationSampling Plan

Client's Requirement

Deviations, if any

Name of the witnessing persons

Client's Representatives Mr. Sivaramakrishnan

Other than Client's Representatives Mr. Suhas Kulange, Dy. Manager- Engineering,M/s Suzion Energy Ltd., PuneNoneTest subcontracted with and address of the

laboratoryDocuments constituting this report (in words)

No. of Sheet(s)No. of Oscillogram(s)No. of Graph(s)No. of Photograph(s)No .of Test Circuit Dia

~(S) .,

No. of drawing(s) l ......-. ...-----

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(Manohjr)i~g~ Takkher)

TE* ENGINEER

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SixNilNilNilNilNil

~~(SV. Raghavaiah)JOINT DIRECTOR

AUTHORISED SIGNATORY

CENTRAL POWER RESEARCH INSTITUTESWITCHGEARTESTING& DEVELOPMENTSTATION

GOVINDPURA,BHOPAL- 462 023~INDIAPhone: +91(0) 755 2586682 Fax: +91 (0) 755 2587774

Test Report No: 2005/STN-1/172

DESCRIPTION OF SAMPLE TESTED(Ratings as assigned by the C1ient)

Sample

TypeSerial No.

Rated Power (kVA)

Rated Voltage HV (Volts)

LV (Volts)

Rated Current HV (Amps)

LV (Amps)

Number of Phases

Connection, Vector group

Type of CoolingRated Frequency (Hz)

Temperature rise of oil/winding (in Degree Centigrade)

Tapping Range

Apparent short circuit power behind transformer (in MVA)

Type of Winding

Winding materialInsulation level HV

LV

Oil in litres

Weight of oil (kg)

Weight of core & winding (kg)

Total weight (kg)Year of manufacture

Tap No

Primary Voltage (Volts)

Secondary Voltage (Volts)

% Impedance

X/R Ratio

Guaranteed No Load Loss (Watts)

Guaranteed Load Loss at 750 C (Watts)

Guaranteed % Impedance at 75 0 C

1

34650

690

Not furnished

Not furnished

Not furnished

Not furnished

Not furnished

1500kVA, 33/0.69 kV, Transformer

Conventional

SPE/1748

:1500

:33000

:690

:26.24

:1255.1

:3

:Delta/Star, Dyn11

:ONAN

:50

:50/55

:+5% to -5% (6 taps in 5 steps of 2.5% each)

:1000

:Circular

: Copper

:Dry PF : 70 kVrmsllmpulse : 170 kVpk

:Dry PF : 3 kVrmsllmpulse : --:1100

:950

:2100

:4300

:2005

3

33000

690

5.89

4.765

1750:!: 10%

15000:!: 10%

6.25 +/- 10%

6

31350

690

Not furnished

Not furnished

Not furnished

Not furnished

Not furnished

.J

. \/1/'i 1

(Ma~lher Singh Takkher)~EST ENGINEER

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GOVINDPURA,BHOPAL- 462023, INDIAPhone: +91(0) 7552586682 Fax: +91 (0) 7552587774

Test Report No: 2005/STN-1/172

SUMMARY OF TEST

NAEL.AOCREJ:IIT

Sheet30f6 ~

1.0 Test Conducted Routine Tests:-(i) Measurement of winding resistance at tap Nos. 3 (Principal)

and 5 (Lowest).(ii) Measurement of voltage ratio and check of voltage

. vectorrelationship.(Hi) Measurement of impedance voltage/short circuit impedance

and load loss at tap Nos. 3 (Principal) and 5 (Lowest).(iv) Measurement of no load loss and current.

(v) Measurement of insulation resistance.(vi) HV (dry) power frequency withstand test.

As per sheet no. 2 of 6

As per sheet no. 5 of 6

Nil

Nil

Nil

2.0 Rating for which Tested

3.0 Schedule of routine test results

4.0 Schedule of short circuit test results

5.0 Oscillogram numbers

6.0 Test Circuit diagram number

. )J"

d;'"(Ma~hher Singh Takkher)

WEST ENGINEER

-