The Reliable Turbine Services GATE 1 testing service is perfect for establishing baseline readings on customer generator equipment. This rotor-in-place testing is non-invasive and can be conducted within the timing of a borescope inspection, turbine minor or combustion inspection.
The following items are included in our base GATE-1 generator testing:
Inspections/Tests Performed
Borescope inspection of stator winding, rotor winding and blocking (as accessible), stator core step laminations and fingerplates
Insulation resistance of RTD’s, stator winding, and rotor winding
Stator Winding Test – Polarization Index (PI), Resistance, DC step voltage test
Rotor Winding Test – Polarization Index, Resistance, AC Impedance
Exciter inspection
Visual inspection
Insulation resistance tests
Final Report
Standardized format provided
Photographs of critical areas in the stator winding, core, and rotor.
Dielectric absorption graph and analysis of insulation integrity
Summary of all insulation and winding resistance measurements taken.
Any anomalies reported immediately with the Final Report submitted within 10 days of inspection
Benefits
Reveals pending faults in winding of the rotor and stator
Reveals deterioration of coil insulation caused by corona or end winding vibration
Establishes a “base line” for evaluating future inspections and input for establishing planned major maintenance activities
Optional Testing – Electrical Isolation
RTS can also provide an estimate for the neutral and main leads disconnection prior to electrical testing and reconnect upon completion of testing.