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Recent Forum Posts
300 MW Stator Cooling Water System Issue
We had leaking hollow strands on a stator winding, so we blocked them off. We then ran an FEA thermal...
Posted in:
Generators: Water Leaks, Crevice Corrosion, Capacitance Mapping
Tuesday, November 10, 2026 05:52 AM
Stator Core damage during rotor first insertion
Hello Everyone, 47 MVAr Synchronous Condenser, horizontal axis. Rotor 180 ton, 750 RPM. New machine. During first attempt of rotor insertion,...
Posted in:
Generators: Other Issues
Monday, November 9, 2026 10:29 PM
18-18 rings pitting
Modern 2000's era 18-18 rings from Air Cooled Aeropac Unit with pitting as shown in the attachment. NO signs...
Posted in:
Generators: Retaining Rings
Monday, November 9, 2026 12:28 PM
Brushless Generator Field Ground Monitoring – RF System Experience and New Technologies
Do you think the reliability issue you mention is a result of RF principle itself, or related to a particular...
Posted in:
Generators: Other Issues, including R&D, Sensor Improvements
Saturday, November 7, 2026 12:50 PM
Grounded core through-bolt
Thank you for the reply. Yes these are normally insulated core through bolts passing through the “yoke” area of the...
Posted in:
Generators: Other Issues
Sunday, October 25, 2026 08:51 AM
Generator & LP rotor magnetized
During 250 MW unit OH, it was observed that, LP rotor shaft coupling area & Generator rotor found magnetized. Guass...
Posted in:
Generators: Stator Winding Issues & Upgrades
Monday, October 19, 2026 06:08 AM
Reusability of a Flood-Submerged Hydrogenerator—Are Conventional Electrical Tests Sufficient?
We had a flood event in 2024. Instead of using a welder we rented a Magna-Power (MAGN-MSD32-2250/480+LXI) DC power...
Posted in:
Generators: Stator Winding Issues & Upgrades
Monday, October 12, 2026 11:55 AM
TURB-GENERATOR SHAFT VOLTAGE HIGH LEVEL
Hi experts, We have a 325.8MW Hydrogen cooled generator, 3600rpm, 18kV, 60Hz, 12,294A, HEC generator on site. We just noticed after...
Posted in:
Generators: System Standards & Best Practices
Monday, October 12, 2026 02:34 AM
Generator Bus Humming
Have some questions to clarity of the problem. 1.The humming sound is proportional to load increase? 2.When the Generator is running with...
Posted in:
Generators: Other Issues
Saturday, October 10, 2026 08:52 AM
7FH2 generator noise reappearance after corrective work.
Got it. Keep tabs on OSSB migration. Easy visual inspection at the TE, behind the endwinding, bottom bar/filler...
Posted in:
Generators: Keybar Rattle, Fretting & Looseness of Core to Frame Interface
Wednesday, October 7, 2026 10:57 AM