Electrical Systems

Question 1

Batteries

Answer 1

Main 24V 40A Lead Acid Emergency 24V 18A Lead Acid

Question 2

Starter Generator

Answer 2

2 DC Starter Generators 61.5% Generator 27 -31 V 400A each Starter/Generator is monitored and regulated by individual Generator Control Unit (GCU)

Question 3

Bus Power Control Unit (BPCU)

Answer 3

provides control for Bus Tie Contactor (BTC), Load Shedding, External Power Functions and DC SVCE BUS contactors

Question 4

Battery Basic Mode

Answer 4

10 Lights: DC GEN FAULT 1 & 2 DC SVCE/UTLY BUS SHED DC BUS 1 & 2 off BATT DISCH ARROWS (2) AC BUS 1 OFF AC BUS 2 OFF & INV FAULT

Question 5

External Power MIN VOLTAGE

Answer 5

Under 26V unusable 26V Preflight 28V Start (can load shed to get 28)

Question 6

DC GEN MAX LOAD

Answer 6

400A none 600A 2 Min 800A 8 Seconds

Question 7

INV MAX LOAD

Answer 7

500V none 575V 30 Min 750 V 5 Min

Question 8

ACW GEN MAX LOAD

Answer 8

20 kVA none 30 kVA 5 Mon 40 Kva 5 seconds

Question 9

Transformer Rectifier Unit (TRU) MAX LOAD

Answer 9

60A none 90A 5 min

Question 10

Min Battery Volts for Start

Answer 10

23V

Question 11

ACW Generators

Answer 11

2 Propeller driven, 3 phase generators 115V /200V 20 kVA 341HZ to 488HZ 70.8% Np