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Toshiba rotating exciter expected life
Rotating exciters when well maintained can last 50+ years. I know of some in service for 80+ yrs. ...
Posted in: Generators: Other Issues
Monday, December 10, 2018 05:38 PM
Spare Stator Bar Recommendations
Where ever you go to purchase a set of stator bars, be certain they are a vendor with a reliable,...
Posted in: Generators: End Winding, Bracing, Blocking, Series & Phase Connection Deterioration
Monday, December 10, 2018 03:55 PM
Consequences of important rotor turn shorts on a low-speed hydrogenerator
Dear experts, The personnel of one of our hydro power plants has measured important voltage drops on two poles of a...
Posted in: Generators: Other Issues
Monday, December 10, 2018 11:18 AM
Rotor Earth Fault not present at standstill
As I illustrate in the attached paper, beginning on page 1, a single ground alone can be very dangerous.
Posted in: Generators: Running Electrical Tests, Flux Probe, Impedance, Meggar etc.
Sunday, December 9, 2018 01:10 PM
Stator HI-Pot Testing - Shorting CT's
Shorting the RTD's / CT's ,rotor winding(If inside) other auxiliaries nearby shorting and making ground is a standard practice....
Posted in: Generators: Stator Winding AC/DC Hipot, Leakage, Absorption Tests
Sunday, December 9, 2018 05:41 AM
Hydro Generator Stator Bar Side Filler Systems. Ripple Side-Spring vs Liner & Putty
Thank you all for replying to this post. We really appreciate you all sharing your knowledge and experience. Regards, Tim
Posted in: Generators: Stator Winding Issues & Upgrades
Thursday, December 6, 2018 12:57 PM
Steam Turbine Vibration during coastdown
What is the stated first critical speed for the generator? We've also seen alignment issues cause unusual "train critical"...
Posted in: Steam Turbines: Vibration (Lateral & Torsional)
Tuesday, December 4, 2018 06:13 PM
Catastrophic PMG Failure
I am currently working on a plan to address all possible outcomes of the upcoming bump test on my newly...
Posted in: Generators: Other Issues
Tuesday, December 4, 2018 01:42 PM
PD levels during FAT/SAT
There as many ways to treat the ends of a stator bar as there are suppliers. The technique changes with...
Posted in: Generators: Partial Discharge and Electrical Magnetic Interference
Friday, November 30, 2018 07:40 PM
GFL-1 obsolete
I can help you with that part you can contact me at XXXXXXXXXX (number removed per site's non-commercial policies. Webmaster) Mark Williams
Posted in: Generators: Other Issues
Tuesday, November 27, 2018 09:12 AM
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