pt.tanjung enim lestari_report

PT.MEGA DAYAPT.MEGA DAYAELECTRICAL ROTATING SERVICEELECTRICAL ROTATING SERVICE

REPAIR CORONA REPAIR CORONA ON STATOR WINDING GENERATOR ON STATOR WINDING GENERATOR

ABB 89400 KVA 11500 VABB 89400 KVA 11500 V

PT. TANJUNGENIM LESTARI PT. TANJUNGENIM LESTARI PULP & PAPERPULP & PAPER

NAME PLATE DATA GENERATORNAME PLATE DATA GENERATOR

ABB GENERATORABB GENERATOR

S/NS/N : 100022: 100022 TYPE : WX18Z-059LL TYPE : WX18Z-059LL

RATED OUTPUTRATED OUTPUT : 89200 KVA: 89200 KVA MANUFACTURED: 1998 MANUFACTURED: 1998

POWER FACTORPOWER FACTOR : 0.8: 0.8 FIELD VOLTAGE: 237 V FIELD VOLTAGE: 237 V

ARMATURE VOLTAGEARMATURE VOLTAGE : 11500 V +/- 5% FIELD CURRENT: : 11500 V +/- 5% FIELD CURRENT: 1167 A1167 A

ARMATURE CURRENT: 4488 A 3 FASA SPEEDARMATURE CURRENT: 4488 A 3 FASA SPEED : 3000 : 3000 1/min1/min

FREQUENCYFREQUENCY : 50 Hz: 50 Hz

CONNECTIONCONNECTION : Y: Y

DIRECTION OF ROTATION (FROM DE) CCWDIRECTION OF ROTATION (FROM DE) CCW

STANDARDSTANDARD : IEC: IEC

FIELD AND STATOR WINDING INSULATION CLASS FFIELD AND STATOR WINDING INSULATION CLASS F

FIELD AND STATOR WINDING TEMPERATURE RISE CLASS BFIELD AND STATOR WINDING TEMPERATURE RISE CLASS B

SCOPE OF WORKSCOPE OF WORK

► PD TEST ON-LINE BEFORE AND AFTER REPAIRPD TEST ON-LINE BEFORE AND AFTER REPAIR► INSULATION RESISTANCE TEST BEFORE AND AFTER INSULATION RESISTANCE TEST BEFORE AND AFTER

REPAIRREPAIR► RESISTANCE TEST STATOR WINDINGRESISTANCE TEST STATOR WINDING► MECHANICAL WORK (REMOVE END SHIELD AND MECHANICAL WORK (REMOVE END SHIELD AND

ETC)ETC)► REPAIR WINDING ON SEPARATOR BARRIER AND REPAIR WINDING ON SEPARATOR BARRIER AND

WINDING TIESWINDING TIES

SCHEDULE OF WORKSCHEDULE OF WORK

PROCEDURE OF REPAIRPROCEDURE OF REPAIR

► Corona Affected Phase SeparatorCorona Affected Phase Separator Clean corona affected area, and remove porous Clean corona affected area, and remove porous

areas of epoxy Dacron packer.areas of epoxy Dacron packer. Filled voids with epoxy varnish and or silicone Filled voids with epoxy varnish and or silicone

rubber depending on the location and rubber depending on the location and accessibility.accessibility.

► Corona Affected Winding TiesCorona Affected Winding Ties Where the corona affected ties are accessible Where the corona affected ties are accessible

fill the voids.fill the voids. Clean corona area by scrapping and brushing Clean corona area by scrapping and brushing

out oxidization.out oxidization. Filled voids with natural silicone rubber.Filled voids with natural silicone rubber.

EQUIPMENT TESTEQUIPMENT TEST

►PARTIAL DISCHARGE ON-LINE PARTIAL DISCHARGE ON-LINE (TOSHIBA)(TOSHIBA)

►MEGGER TEST (AVO S5005)MEGGER TEST (AVO S5005)►MICRO OHM METER (MONOLITHIC)MICRO OHM METER (MONOLITHIC)

MATERIALMATERIAL

►ARAMID PAPER NOMEX (0.5 mm ARAMID PAPER NOMEX (0.5 mm THICK)THICK)

►EPOXY VARNISH (EPIREZ)EPOXY VARNISH (EPIREZ)►NATURAL SILICONE RUBBER (GE)NATURAL SILICONE RUBBER (GE)►GLASS TAPEGLASS TAPE►ELECTRIC CLEANER (MEGA WASH)ELECTRIC CLEANER (MEGA WASH)►PAINT THINNERPAINT THINNER

PD TEST ON-LINEPD TEST ON-LINE

PHOTOGRAPHPHOTOGRAPH

WINDING LAY-OUT WINDING LAY-OUT PONTENTIAL CORONA PONTENTIAL CORONA

AFFECTEDAFFECTED

Pre-Pre-RecommendationRecommendation

► Continue Trent Partial Discharge Monitoring Continue Trent Partial Discharge Monitoring On-line every 3 or 6 Month.On-line every 3 or 6 Month.

► If The Trent Partial Discharge On-line If The Trent Partial Discharge On-line Increases By the Time (prepare permanent Increases By the Time (prepare permanent monitoring for Partial discharge in Generator monitoring for Partial discharge in Generator control room).control room).

►Do Major repair for clean affected corona Do Major repair for clean affected corona (Need to be Rotor removal) for better result (Need to be Rotor removal) for better result of cleanness to minimize affected corona on of cleanness to minimize affected corona on winding.winding.

End of Pre-PresentationEnd of Pre-Presentation

pt.tanjung enim lestari_report

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