Main Generator

Question 1

What does the AC regulator do in the Main Generator?

Answer 1

Adjusts field based on Generator Terminal Voltage.

Question 2

What does the DC regulator do in the Main Generator?

Answer 2

Maintains Field Excitation.

Question 3

What is the purpose of the Core Monitor in the Main Generator?

Answer 3

Watches for overheating. Particulate smoke detector.

Question 4

What happens to VARs if Grid volts decrease?

Answer 4

VARs will go up.

Question 5

What must be done on a loss of both bus duct cooling fans?

Answer 5

maintain generator stator current <20,000 amps.

Question 6

What are the MVAR limits?

Answer 6

233 lagging
150 leading (negative)

Question 7

Why must the generator synch slow in the fast direction?

Answer 7

Prevents the generator from becoming a load.

Question 8

What is Volts/Hertz protection for?

Answer 8

Prevents excessive flux in the transformer.

Question 9

What can happen with a turbine trip with the output breaker staying closed?

Answer 9

Damage to the turbine.

Question 10

What is the Wye connected Advantage?

Answer 10

Can increase line voltage without change in current.

Question 11

What is the Main Generator electric output limit with one H2 cooler OOS?

Answer 11

1104MW

Question 12

How many seconds per sync scope rotation?

Answer 12

> 20 sec