Shared Flashcard Set

Details

Main Generator and H2 Cooling
ILT '09
12
Other
Not Applicable
03/02/2008

Additional Other Flashcards

 


 

Cards

Term
List the Generator Field breaker trips
Definition
  • Generator lockout;
  • Turbine lockout;
  • V/Hz relay;
  • less than 5 KV for 30 seconds;
  • Handswitch
Term
Function of the main generator
Definition
Convert mechanical energy of shaft rotation into electrical energy, which is distributed over the power grid.
Term
Power supply to Isophase Bus Cooler Blower Motor
Definition
MCC-116
Term
With what two conditions should the isophase bus blower NOT be placed in service?
Definition
Outside air temperature less than 32 degrees F. AND Generator not on line.
Term
Operating limit below which isophase bus is capable of self-cooling?
Definition

Main generator less than 10,500 amps

(approx 400 MWe)

Term
Should one of the hydrogen coolers fail, it may be removed from service for an indefinite period of time provided…
Definition
Generator load does not exceed 531 MWe at a power factor of 1.00 with hydrogen pressure 43 to 45 psig.
Term
Minimum seal oil pressure when operating
Definition
3 psig above hydrogen pressure in generator casing
Term
Minimum seal oil pressure at a standstill
Definition
1 psig above hydrogen pressure in generator casing
Term
Max differential pressure between seal oil and hydrogen pressure
Definition
8 psid
Term
Hydrogen purity that should preferably not be allowed to fall below
Definition
90% (Upper explosive limit is 75%)
Term
Generator gas pressure at rated conditions
Definition
45 psig
Term
Power supply to Generator Hydrogen control panel
Definition
D111
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