Electrical System Flashcards
D&C system is composed of.
Two NiCad batteries
Three TRUs
DC external power unit.
AC system is composed of
Two IDGs APU generator Inverter RAT AC external power unit.
IDGs, APU provide electrical power rated at.
40 kVA, 115 VAC, 400 Hz, three phase.
RAT supplies power to
ESS BUSES when both AC BUSES 1 and 2 are not powered.
IDG Manual disconnect
Must be re-connected on the ground by mx.
During the start cycle
Batt 2 is isolated from the network, powering the APU START BUS exclusively.
Power priority
Onside, APU, GPU, Offside.
How many seconds until the RAT powers AC ESS BUS.
8
During the 8 seconds after the RAT has been deployed, The batteries power.
The DC ESS BUS through the ESS TRU.
RAT powers what ACMP
3A
The NBPT allows un-interrupted gen. swaps between:
IDGs, GPU and APU generator.
If the NBPT does not work:
A break-transfer takes place instead.
How many TRUs?
3
Volt/Amp rating of the TRUs.
300 A
