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Recent Forum Posts
Unauthorized changes to Turbine design.
Hello everybody: Thanks Pablo for your warning. At one point I thought about it the way you put it, but even...
Posted in:
Hydraulic Turbines: Kaplan Turbines
Friday, June 24, 2022 04:18 PM
Unauthorized changes to Turbine design.
Hello everybody: Thank you Jeff for your inputs.
Posted in:
Generators: Other Issues
Friday, June 24, 2022 04:10 PM
Generator stator vibration & noise monitoring
Usually stator core or frame vibrations occur in specific operating conditions, most commonly related to thermal conditions, as the stiffness...
Posted in:
Generators: Other Issues
Wednesday, June 22, 2022 05:43 AM
Rotor wedges cracks
As advised earlier to see if the crack is surfacial you first machine off the surface crack up to 2mm...
Posted in:
Generators: Cracking of Rotor Teeth, Slot Wedge Fretting, Galling, Burning & Negative Sequence Damage
Tuesday, June 21, 2022 01:15 AM
Low IR after DC High Voltage Leakage Test
Today we performed vacuum procedure at a pressure of 400 kPa, but the IR of Phase A is not increased....
Posted in:
Generators: Stator Winding AC/DC Hipot, Leakage, Absorption Tests
Monday, June 20, 2022 01:53 PM
Fluctuating rotor insulation resistance
I agree with Mr. Lane's comments with the same experience. Moisture would be a major factor.
Posted in:
Generators: Running Electrical Tests, Flux Probe, Impedance, Meggar etc.
Sunday, June 19, 2022 03:07 PM
Controlling Electrical Discharge Damage to Generator Bearings
We installed a zero inductance 0.1 ohm resistor rated to 5000A short term to shunt high frequency to ground. This...
Posted in:
Generators: Other Issues
Friday, June 17, 2022 03:13 AM
generator contamination
Good to know. Thanks for the feedback. Bert
Posted in:
Generators: Stator Dusting, Greasing, Wedging & Bracing, Foreign Debris & Contamination
Tuesday, June 14, 2022 09:53 AM
Applicable standard for El Cid testing
I doubt that an applicable Standard can be written for low-flux testing, there are too many unknowables. Certainly a...
Posted in:
Generators: Other Issues
Wednesday, June 8, 2022 01:40 PM
SGen5-2000H O&M
To obtain an Instruction Book for a specific generator that contains operational and maintenance information, contact the local Siemens district...
Posted in:
Generators: Other Issues
Wednesday, June 8, 2022 10:37 AM