ATA 24

Alternate Current Start-Generation Subsystem (ACSGS) consists of:

• 2 AC Starter-Generator and APU AC generator

• 2 DC Starter-Generator and APU DC generator

• 2 AC Starter-Generator and APU DC generator

Which equipment distribute electrical power to the final equipment fed by main buses, essential buses and non-essential buses?

• DC Power Distribution Unit (DC PDU)

• Remote Electrical Power Units (REPU)

• Starter Generator Control Unit (SGCU)

What functions of Main Battery?

• Power source for engine starting

• To supply main bus and essential bus

• Power source for APU starting

Direct Current Generation System (DCGS) consists of:

• Main battery, Transformer Rectifier Unit (TRU) and Emergency Battery Power Supply

• Main battery, Transformer Rectifier Unit (TRU) and DC Power Distribution Unit (DC PDU)

• Main battery, AC Power Distribution Unit (AC PDU) and Emergency Battery Power Supply

Which component store the system software configuration files for Solid State Electrical Power Management System (SSEPMS)?

• Electric Control Display Unit (ECDU)

• Remote Electric Power Unit (REPU)

• Personality Modules (PM)

Main functions of the engine Starter-Generator

• Engine starting and provide AC power

• Engine starting and provide DC power

• Engine starting, provide AC and DC power

Main engine start can be performed by: -

• AC external power and DC external power

• Engine cross start and DC external power

• AC external power and engine cross start

Main function of Starter Rectifier Unit (SRU)

• Rectifies 115VAC power into 270VDC output for Main Engine Starting

• Provide electrical power to start the engine and generate electrical power on the helicopter

• Controls the generator output voltage

What the main function of the DC PDU?

• Convert AC power to DC power

• Provide electrical power to the aircraft equipment

• Distribute DC power to circuit breaker panels and to remote electrical power units (REPU)

What is the purpose Remote Electrical Power Unit (REPU)?

• Controls the generator output voltage

• Protect the wiring from overcurrent and arching

• Convert AC power to DC power