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May 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 24 ELECTRICAL POWER
UF94200
EFFECTIVITY Page 169
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AC GENERATION - MAIN GENERATION COMPONENTS
3 HOLE CURRENT TRANSFORMER
IDENTIFICATION
FIN: 42XU
LOCATION
ZONE: 212
COMPONENT DESCRIPTION
The 3 hole Current Transformer assembly contains three
toroidal transformers: one for each of the power feeder
cables. The line Current Transformers work in
conjunction with the generator Current Transformer to
provide differential current, fault sensing and
overcurrent sensing
TMUELAN01-T05 LEVEL 3
EFFECTIVITY 24-22-00 Page 10
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_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 24 ELECTRICAL POWER
UF94200
EFFECTIVITY Page 170
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AC GENERATION - MAIN GENERATION COMPONENTS - 3 HOLE CURRENT TRANSFORMER
TMUELAN01-P05 LEVEL 3
EFFECTIVITY 24-22-00 Page 11
May 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 24 ELECTRICAL POWER
UF94200
EFFECTIVITY Page 171
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TMUELAN01 LEVEL 3
EFFECTIVITY 24-22-00 Page 12
May 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 24 ELECTRICAL POWER
UF94200
EFFECTIVITY Page 172
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24 - ELECTRICAL POWER
24-23-00 AC GENERATION - AC AUXILIARY
GENERATION D/O
CONTENTS:
Generator
Generator Control Unit Supply
Generator Operation Control
Generator Monitoring
Generator Reset
Generator Temperature Monitoring
Self Examination
TMUELAO02 LEVEL 3
EFFECTIVITY 24-23-00 Page 1
Oct 31/99
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 24 ELECTRICAL POWER
UF94200
EFFECTIVITY Page 173
ALL
AC GENERATION - AC AUXILIARY GENERATION D/O
GENERATOR
The APU generator operation principle and the output
characteristics are identical to those of the IDG
generator.
The APU directly drives the APU generator at a nominal
24000 RPM constant speed.
The cooling circuit is common to the APU and to the
generator.
GENERATOR CONTROL UNIT SUPPLY
The Generator Control Unit supply operation principle
is identical to that of the AC Main generation.
GENERATOR OPERATION CONTROL
The generator is controlled by the APU generation
pushbutton. When pressed in, if the APU speed is high
enough, the generator is energized.
When the APU is available, the APU Ready signal allows
the Power Relay to be energized via the protection
module (Delivered Parameters correct). The APU
Generator Line Contactor (GLC 3) is energized through
a priority logic (GLC, BTC, EPC logic).
GENERATOR MONITORING
The generator monitoring operation is identical to
that of the IDG generator.
The monitoring system (FAULT light and ECAM system)
is inhibited as long as the APU is not available.
GENERATOR RESET
When the APU generator pushbutton is released out after
a fault detection, the Generator Control Unit is reset.
The Generator Control Relay (GCR) and the Power Ready
relay (PR) are reset.
GENERATOR TEMPERATURE MONITORING
A temperature sensor is incorporated in the auxiliary
generator to monitor the oil outlet temperature.
The temperature sensor is connected to the Electronic
Control Box (ECB) to shut down the APU in case of
excessive temperature.
TMUELAO02-T01 LEVEL 3
EFFECTIVITY 24-23-00 Page 2
Oct 31/99
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 24 ELECTRICAL POWER
UF94200
EFFECTIVITY Page 174
ALL
AC GENERATION - AC AUXILIARY GENERATION D/O
TMUELAO02-P01 LEVEL 3
EFFECTIVITY 24-23-00 Page 3
Oct 31/99
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 24 ELECTRICAL POWER
UF94200
EFFECTIVITY Page 175
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SELF EXAMINATION
When does the APU GEN FAULT light come on?
A - When the APU is shut down.
B - When a fault is detected.
C - Both.
Where is the APU generator oil outlet temperature
signal sent to?
A - To the ECB.
B - Directly to the GCU.
C - To the GCU through the ECB.
TMUELAO02 LEVEL 3
EFFECTIVITY 24-23-00 Page 4
Oct 31/99
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 24 ELECTRICAL POWER
UF94200
EFFECTIVITY Page 176
ALL
24 - ELECTRICAL POWER
24-23-00 AC GENERATION - AUXILIARY
　
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