CUSTOMER: I SAUDI ELECTRICITY COMPANY. SEC. EOA. PROJECT:ABU HADRIYAH - 380/115kV BSP GISEXPANSION PROJECT.

CONTRACT NO. : 30733178/00 CONTRACTOR:NATIONAL CONTRACTING COMPANY

SUBSTATION: 380/115kV BSP ABU HADRIYAH LTO. AL KHOBAR.TYPE FORM : 420kVGISBAYNo. C4.A812 RATING: 380kV 3150A. 63kA 1sec. 60Hz

CURRENT TRANSFORMER INSULATION RESISTANCE MEASUREMENT.

Insulation resistance measurement.Circuits to ground by means of 1000V megger. Duration : 60 Sec.

CT.No. PHASE CT.RATIO INSULATION RESISTANCE (MO) AMBIENT RESULTS-G TEMPRATURE

A 750/1500/20001 56GO 24.3 OK2500/3000 : 1AA812. F. C1 B 750/1500/20001 56GO 24.3 OK

2500/3000 : 1A

C 750/1500/20001 66GO 24.3 OK2500/3000 : 1A

A 750/1500/20001 56GO 24.3 OK2500/3000 : 1A

A812. F. C2 B 750/1500/20001 86GO 24.3 OK2500/3000 : 1A

C 750/1500/20001 66GO 24.3 OK2500/3000: 1A

A 750/1500/20001 67GO 24.3 OK2500/3000 : 1A

A812. F. C3 8 750/1500/20001 60GO 24.3 OK2500/3000 : 1A

C 750/1500/20001 77GO 24.3 OK2500/3000 : 1AA 750/1500/20001 49GO 24.3 OK2500/3000 : 1A

A812. B2. C1 B 750/1500/20001 37G 0 24.3 OK2500/3000: 1A

C 750/1500/20001 47GO 24.3 OK2500/3000: 1AA 750/1500/20001 57G 0 24.3 OK2500/3000: 1A

A812. B2. C2 B 750/1500/20001 36GO 24.3 OK2500/3000 : 1AC 750/1500/20001 79G 0 24.3 OK2500/3000 : 1AA 750/1500/20001

> 102 G 0 24.3 OK2500/3000 : 1AA812. B2. C3 B 750/1500/20001 > 102 G 0 24.3 OK2500/3000 : 1A

C 750/1500/20001> 102 G 0 24.3 OK2500/3000: 1A

A 750/1500/20001> 102 G 0 24.3 OK2500/3000: 1A

A812. 82. C4 8 750/1500/20001> 102 G 0 24.3 OK2500/3000: 1A

C 750/1500/20001 > 102 G 0 24.3 OK2500/3000 : 1A

Criteria: More than 2MO (Toshiba Standard)Note: S: Secondary G: Ground

TEST EQUIPMENT USED: AVO MEGGER. BM11D.

N~ .,~ -test co.."I'f)cdot¢- -r'YOI'"f") Le.-p ~ CT.

TESTED BY WITNESSED BYName: BENNY JACOB

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Name: MUHAMMAD KASHIF

Signature: Signature: dtJ1Date: ~/11 /2010 Date: )... 811f /'Mo, TOSHIBA CORPORATION SAUDI ELECTRICTY COMPANY. CSD. EOA

A CORPO~. __IUN

CUSTOMER: I SAUDI ELECTRICITY COMPANY. SEC. EOA. PROJECT:ABU HADRIYAH • 3801115kVBSP GISEXPANSION PROJECT.

CONTRACT NO. : 30733178100 CONTRACTOR:NATIONAL CONTRACTING COMPANY

SUBSTATION: 380/115kV BSP ABU HADRIYAH LTO. AL KHOBAR.TYPE FORM : 420kVGISBAYNo. C4.A810 RATING: 380kV 3150A. 63kA 1sec. 60Hz

CURRENT TRANSFORMER POLARITY TEST.

Check polarity by inductive kick method for all taps.

CT. No. PHASE CT.RATIO TAP TERMINAL No.INDICATION RESULTON OFF

75011A 1S3A - 1S4A X21A: 3.4 + - OK

150011A 1S2A - 1S4A X21A: 2,4 + - OK

A810. 81. C1 A 200011A 1S2A - 1S5A X21A: 2,5 + - OK

250011A 1S1A - 1S4A X21A: 1 ,4 + - OK

300011A 1S1A - 1S5A X21A: 1 .5 + - OK

75011A 1S38 - 1S48 X21A: 8,9 + - OK

150011A 1S28 - 1S48 X21A: 7,9 + - OK

A810. 81. C1 8 200011A 1S28-1S58 X21A: 7 ,10 + - OK

250011A 1S18 - 1S48 X21A: 6.9 +- - OK

300011A 1S18 -1S58 X21A: 6,10 + - OK

75011A 1S3C - 1S4C X21A:13,14 + - OK

150011A 1S2C - 1S4C X21A: 12 , 14 + - OK

A810. 81. C1 C 200011A 1S2C - 1S5C X21A: 12,15 + - OK

250011A 1S1C - 1S4C X21A: 11,14 + - OK

300011A 1S1C - 1S5C X21A:11,15 + - OK

Criteria : Subtractive polarity [Toshiba standard]At the moment of making the switch, voltmeter should be indicated positive.At the moment of breaking the switch, voltmeter should be indicated negative.Note : Polarity test carried out from LCP to CT

Equipment Used : Galvano Meter & 8attery pack

TESTED BY WITNESSED BYName: 8ENNYJAC08

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Name: MUHAMMAD KASHIF

LASignature: r/, 1/ Signature: fA Q .Date: 2f, J) 20ft:> Date: VI, 'II/"J;1. ~ .

TOSHIBA CORPORATION !AVIDI E OijCTY COMPANY. CSD. EOAI BA CDRPDJ ~~II