Wedge tightness tests on stator wedges during inspections.
Test results of stator slot wedges with wedge test Analyzer.
As found Vibration Analysis was conducted on end windings.
Conducting as found EL CID test on stator core iron.
EL CID Test Results in Progress. Each slot is scan individually.
Winding Resistance test on stator generator.
Main Leads grounded and staged for Insulation Resistance at engineering procedure recommendation at 5000VDC.
5000VDC Insulation Resistance test result.
Grounding B&C phases to perform Polarization Index as well DC Leakage test on A Phase.
View of DC Leakage test at triple standards test 29KVDC on Phase.
Power Factor Test Result on A Phase on turbine generator.
Power factor Tip up Test on B Phase on turbine generator.
Power Factor Tip up test on C Phase on turbine generator at 8000VAC.
Removing old wedges from stator.
View of the cleaning during old wedge removal from stator slot wedges.
Routine Procedure to conduct EL CID test on stators after wedge removal.
Assurance that core has the required voltage for the 4 percent recommendation for the EL CID test.
We also can perform chemical and CO2 cleaning on stator windings.
View of chemical cleaning during an inspection on stator windings.
Completed Conducting paint application on stator coils before new slot wedge installation.
Middle set wedge on new slot wedge installation.
Completed Wedge installation on stator generator.
Rubber baffle seal installed and tied down with epoxy saturated cord after the new wedge installation.
Completed End Winding Stabilization on stator end windings.
Completed End Winding Stabilization on stator connection end.
Completed and painted work scope on turbine generator.
Found Core dents from past openings, but no abnormalities during core EL CID test.
During visual inspection found Wedge with gap between wedges. reported findings to customer.
Megger 5000VDC test set up for generator phase.
Insulation Resistance test on Stator Phase windings.
Conducting Power factor Analysis on phase windings.
Induced 8000VAC for power factor tip up test.
Vibration Analysis can be performed on end windings.
Chemical cleaning on Stator windings to remove greasing and dust contamination.
Using nylons brushes on stator core soaked with chemical solvents.
Insulation coated paint on stator windings after inspection completion.
Turbine end painted with red insulation Paint after completion of inspection repairs.
Inner hydrogen cooled unit Rewedge.
Manual Wedge tightness inspection on Stator slot wedges.
Wedge Tightness Analyzer test on slot wedges.
Vibration Analysis Instant results recorded during the test.
Conducting Surge Test on stator generator Phases.
10KVDC surge test result on stator phases.
Applied 10KVDC on stator phases for surge test on end windings.
High Voltage Replacement on all 6 Bushings.
Another view after all 6 Bushings were replaced, bolted down and torqued to the engineering specs recommendation.
Hydro Generator Coil installation process.
