120V AC System Flashcards
(5 cards)
1
Q
Rectifier
A
Receives 480V AC from MCC, step down transformer drops to 120 AC, SCR bridge converts to 140V DC
2
Q
Inverter
A
Receives 140V DC, inverter section converts to 120V AC
Inverters 1-4 vital
Inverters 5-6 non-vital
3
Q
Static Switch
A
automatically repositions to alternate power source if AC from inverter is lost
4
Q
Bypass Line Regulator
A
Takes 480V AC from alternate load center, steps down to 120V AC, to supply VIAC
5
Q
Manual Bypass Switch
A
manual transfer of power to bypass line regulator to isolate inverter or static switch for maintenance
