Unit 2 Main Generator Flashcards
What cools the stator?
Stator cooling water
Describe the flow path through the U2 main generator and excitation system from the pilot exciter to the main transformer.
Pilot Exciter, Step down transformer, Exciter field breaker, Voltage regulator (converters), Main Exciter brushes, Main Exciter field rectifiers, Main generator brushes, Main transformer.
How do you locally trip the Exciter Field Breaker?
Push the off button on the breaker in the cabinet on the 609’.
What is the purpose of the main generator?
To convert mechanical energy from the main turbine into electrical energy.
What does the Excitation system do?
It provides the necessary power fo the generator field.
What cools the rotor?
Hydrogen.
What does seal oil do for the generator?
Keeps Hydrogen in the generator and Oxygen out.
What voltage dose the pilot exciter produce?
575vac
What dose a red light on the rectifier cabinet mean?
Blown rectifier fuse.
What do the converters do?
Turn AC to DC
What do the rectifiers do?
Turn AC to DC
What does the the generator condition monitor look for?
Products of combustion.
What is the out put of the main generator?
26,000vac
Why do we use hydrogen in the generator?
High thermal conductivity and low windage.
What is the mode of force to move hydrogen through the condition monitor?
The fan on the rotor in the generator.