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What is the configuration if BTC 1 is open and BTC
2 is closed?
A - GEN 1 supplies AC BUS 1 and EXT PWR
supplies AC BUS 2.
B - APU GEN supplies AC BUS 1 and EXT PWR
supplies AC BUS 2.
C - EXT PWR supplies AC BUS 1 and GEN 2
supplies AC BUS 2.
What is the configuration if both BTCs are closed?
A - GEN 1 supplies AC BUS 1 and GEN 2
supplies AC BUS 2.
B - APU GEN or EXT PWR or one GEN supplies
AC BUS 1 and AC BUS 2.
C - APU GEN supplies AC BUS 1 and EXT PWR
supplies AC BUS 2.
TMUELAM02 LEVEL 3
EFFECTIVITY 24-22-00 Page 4
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24 - ELECTRICAL POWER
24-22-00 AC GENERATION - MAIN GENERATION
COMPONENTS
CONTENTS:
Generator Control Unit
Bus Tie Contactor - Generator Line Contactor
Auto Transformer
6 Hole Current Transformer
3 Hole Current Transformer
TMUELAN01 LEVEL 3
EFFECTIVITY 24-22-00 Page 1
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AC GENERATION - MAIN GENERATION COMPONENTS
GENERATOR CONTROL UNIT
IDENTIFICATION
FIN: 1XU1 (GCU1), 1XU2 (GCU2)
LOCATION
ZONE: 121
COMPONENT DESCRIPTION
The 3 GCUs are identical and interchangeable. The GCU
functions (GCU 1,2 and APU) are selected by pin
programming.
TMUELAN01-T01 LEVEL 3
EFFECTIVITY 24-22-00 Page 2
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UF94200
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TMUELAN01-P01 LEVEL 3
AC GENERATION - MAIN GENERATION COMPONENTS - GENERATOR CONTROL UNIT
EFFECTIVITY 24-22-00 Page 3
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AC GENERATION - MAIN GENERATION COMPONENTS
BUS TIE CONTACTOR / GENERATOR LINE CONTACTOR
IDENTIFICATION
FIN: 9XU1 (GLC1), 11XU1 (BTC1), 9XU2 (GLC2), 11XU2
(BTC2)
LOCATION
ZONE: 212
COMPONENT DESCRIPTION
They are Plug Type Contactors.
TMUELAN01-T02 LEVEL 3
EFFECTIVITY 24-22-00 Page 4
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AC GENERATION - MAIN GENERATION COMPONENTS - BUS TIE CONTACTOR / GENERATOR LINE CONTACTOR
TMUELAN01-P02 LEVEL 3
EFFECTIVITY 24-22-00 Page 5
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MECHANICS / ELECTRICS & AVIONICS COURSE 24 ELECTRICAL POWER
UF94200
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AC GENERATION - MAIN GENERATION COMPONENTS
AUTO TRANSFORMER
IDENTIFICATION
FIN: 15XN1 (15XN2)
LOCATION
ZONE: 212
COMPONENT DESCRIPTION
A 115/26 V single phase autotransformer, supplying
normal 26V/400Hz sub-busbars (131XP-A and 231XP-A),
is connected to each main busbar (AC BUS1: 1XP and AC
BUS2: 2XP)
TMUELAN01-T03 LEVEL 3
EFFECTIVITY 24-22-00 Page 6
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UF94200
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TMUELAN01-P03 LEVEL 3
AC GENERATION - MAIN GENERATION COMPONENTS - AUTO TRANSFORMER
EFFECTIVITY 24-22-00 Page 7
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UF94200
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AC GENERATION - MAIN GENERATION COMPONENTS
6 HOLE CURRENT TRANSFORMER
IDENTIFICATION
FIN: 41XU1 (41XU2)
LOCATION
ZONE: 131
COMPONENT DESCRIPTION
The 6 hole Current Transformer assembly contains six
toroidal transformers, one for each of the parallel
power feeder cables.The 2 Current Transformers for
each phase are connected in electrical opposition to
each other within the Current Transformer assembly.The
6 hole Current Transformer assembly senses open
parallel feeders.
TMUELAN01-T04 LEVEL 3
EFFECTIVITY 24-22-00 Page 8
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_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 24 ELECTRICAL POWER
UF94200
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AC GENERATION - MAIN GENERATION COMPONENTS - 6 HOLE CURRENT TRANSFORMER
TMUELAN01-P04 LEVEL 3
EFFECTIVITY 24-22-00 Page 9
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