N4151 - Main Generator

Question 1

What speed must the turbine be at to close the field breaker?

Answer 1

> 1710 rpm

Question 2

what is main generator rated for?

Answer 2

1600 MVA
1440 MWE
697.4 MVAR
Power factor of .9

Question 3

Which hydrogen cooler is temperature sensed from to control TBCW flow to hydrogen coolers?

Answer 3

C hydrogen cooler

Question 4

What will valving out the C hydrogen cooler cause?

Answer 4

Loss of temperature control to the hydrogen coolers

Question 5

At what RPM will the generator become de-excited?

Answer 5

1710 rpm

Question 6

what cools the hydrogen gas for the generator?

Answer 6

TBCW

Question 7

What cools the rotor windings, stator windings, phase connectors, and terminal bearings?

Answer 7

Primary Water

Question 8

How is heat removed from the generator core?

Answer 8

Spacer segments provide radial passage for hydrogen gas flow

Question 9

What circulates hydrogen gas through the generator, and where are they located?

Answer 9

2 Axial fans located near ends of the rotor in the rotor retaining ring