SITE TEST REPORT

Name of substation: TARUT 115/13.8kV S/SContract No. : 30311203

DEMAND POWER METERPage 5 of 6

PANEL: HA.33Client: National Grid SA

1. GENERAL DATA AND INFORMATION:

Make:Crompton Instruments

Model:Integra 1630

C.T. Primary:600A

C.T. Secondary:1 A

P.T. Primary:13.8kVs

P.T. Secondary:115 V

2. MECHANICAL CHECK AND VISUAL INSPECTION.

TEST NO.DESCRIPTIONCHECKED

1.Inspect for physical damage or defects.OK

2.Check test plug for correct function.OK

3.Check tightness of all connections.OK

4.Check all display functions.OK

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3. ELECTRICAL TEST:

*Measurementof secondary current injection test:

I) Measurement of phase current:

Sec. current injectedMeasured current (A)% Error (with 0.17% of nominal)

ABCABC

0.25150.1149.8149.810.07-0.13-0.13

0.50300.3299.5299.80.10-0.17-0.07

0.75450.3449.3449.90.07-0.16-0.02

1.00600.7599.08600.10.12-0.150.02

II) Measurement of neutral current:

PhasesInjectedsec currentMeasured current (A)Expected current(A)%Error(with 0.17% of nominal& 0.95 for neutral)

ABCN

A-N0.5300.200300.153000.05

B-N0.50299.240299.26300-0.25

C-N0.500299.74299.75300-0.08

ABC0.5300.3299.5299.81.200

*Measurement of secondary voltage injection test.I) Phase to phase (Ph Ph)

SCALEAPPLIED Sec Ph-N VOLTAGE (V)EXPECTED VOLTAGE (kV)MEASURED VOLTAGE(kV) Error(with 0.17% of max. rang)

Ph-PhA-BB-CC-AA-BB-CC-A

0 %000000.000.000.00

25 %16.63.453.453.453.45000

50 %33.26.96.896.96.9-0.1400

75 %49.810.3510.3410.3610.35-0.090.0966180

100 %66.413.813.7913.8113.8-0.070.0724640

II)Phase to neutral (Ph N)

SCALEAPPLIED Sec Ph-NVOLTAGE (V)EXPECTED VOLTAGE (KV)MEASURED VOLTAGE(KV) Error(with 0.17% of max. rang)

Ph-NA-NB-NC-NA-NB-NC-N

0 %000000.000.000.00

25 %16.61.991.991.991.99000

50 %33.23.983.983.983.98000

75 %49.85.975.975.975.97000

100 %66.47.967.977.967.960.1200

*Power measurement test.

I)Active Power(MW) = 3 VI Cos II)Reactive Power(MVARH) = 3 VI Sin III)Apparent Power(MVA) = 3 VI

S.#Sec Ph-N Voltage (V)Sec Current (A)Phase AngleEXPECTED VALUEMEASURED VALUE

MWMVARMVAP.FMWMVARMVAP.F

166.40.507.1707.1717.1607.160.99

266.40.5306.213.587.170.866.213.577.160.86

366.40.5603.586.217.170.53.586.27.160.5

466.40.59007.177.17007.167.160

S.# ERROR OF POWER MEASURMENT(all error percentage of range maximum|)

MW (with 0.2)MVAR(with 0.5)MVA(with 0.2)PF(with 1% of 1)

1-0.139470.00-0.13947-1

20.00-0.27933-0.139470.00

30.00-0.16103-0.139470.00

40.00-0.13947-0.139470.00

*MAX Demand check. (PF=1)

INJECTED CURRENT 3-PHASEINJECTED VOLTAGE 3-PHASEEXPECTED VALUEMEASUREDVALUEError (with 0.2% of max. rang)

MAX MWDMAX MWD

1.066.414.34114.350.06

*Measurement of frequencytest.

INJECTED VOLTAGE (V)INJECTED FREQUENCY (HZ)MEASURED VALUE (HZ) Error(with 15% )

66.450500.0

66.455550.0

66.460600.0

66.465650.0

3.3 Power Meter:FunctionInjected 3Ph voltage & CurrentExpected readingMeter reading%ErrorStatus

Watt meterVAR meter

Watt meterV=1xVn (66.4V)I= 0.5xIn (0.5A)= 45 (360-45=315)5.07MW5.07-0.00OK

V=1xVn (66.4V)I= 1xIn (1A)= 135 (360-135=225)-10.14MW-10.13-0.09OK

VAR meterV=1xVn (66.4V)I= 0.5xIn (0.5A)= 225 (360-225=135)-5.07 MVAR- 5.06-0.2OK

V=1xVn (66.4V)I= 1xIn (1A)= 315(360-315=45)-10.14MVAR-10.14-0.00OK

PFV=1xVn (66.4V)I= 1xIn (1A)= 300.866 Lagging0.86C0OK

Results: % Error = (Observed Meter Reading Expected Meter Reading) / Expected Reading * 100

TEST EQUIPMENT USED:1) Kokos

DATE:

AL OJAIMI TESTING ENGINEERCSD- Engineer

Signature: ________________Signature: ________________

Name : ________________Name : ________________