Electrical Systems Flashcards Preview

ATR 42-500 > Electrical Systems > Flashcards

Flashcards in Electrical Systems Deck (11)
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1
Q

Batteries

A

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

2
Q

Starter Generator

A

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

3
Q

Bus Power Control Unit (BPCU)

A

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

4
Q

Battery Basic Mode

A

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

5
Q

External Power MIN VOLTAGE

A

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

6
Q

DC GEN MAX LOAD

A

400A none 600A 2 Min 800A 8 Seconds

7
Q

INV MAX LOAD

A

500V none 575V 30 Min 750 V 5 Min

8
Q

ACW GEN MAX LOAD

A

20 kVA none 30 kVA 5 Mon 40 Kva 5 seconds

9
Q

Transformer Rectifier Unit (TRU) MAX LOAD

A

60A none 90A 5 min

10
Q

Min Battery Volts for Start

A

23V

11
Q

ACW Generators

A

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