Isophase Bus Duct Cooling Flashcards
1
Q
What is the power supply for the Isophase Bus Duct Cooling fans?
A
Must have 2 A’s - 2A , 1AA
U2 - R23-S001 (600 “A”)
U1 - R24-S005 (600 “AA”)
2
Q
What are the main generator limits on a loss of Isophase bus duct cooling?
A
U2 - 14,000 amps
U1 - 12,800 amps
3
Q
What is the normal Isophase bus duct fan configuration for unit 1 and unit 2? Are there any auto feature associated with them? What is the trip associated with them?
A
U2 - 1 fan running
U1 - both fans running
NO AUTO START OF STANDBY FAN, must be started w/ control switch
Thermal overload trip only
4
Q
What system cools isophase bus ducts?
A
PSW supplies the cooling water flow to the Bus Duct cooling System Heat Exchanger
