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MECHANICS / ELECTRICS & AVIONICS COURSE 24 ELECTRICAL POWER
UF94200
EFFECTIVITY Page 154
ALL
TMUELAL01-P07 LEVEL 3
AC GENERATION - GENERATOR CONTROL UNIT (GCU 1/2) D/O - BITE
EFFECTIVITY 24-22-00
Page 15
May 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 24 ELECTRICAL POWER
UF94200
EFFECTIVITY Page 155
ALL
SELF EXAMINATION
What is the condition of the exciter field when the
generator starts running?
A - Not electrically supplied.
B - Reduced.
C - Increased.
What happens when a generator fault is detected?
A - The exciter field is no longer supplied
and the GCR trips.
B - The exciter field is still supplied and
the GCR stays closed.
C - The exciter field is increased and the
GCR trips.
What is the configuration of the electrical network
when a zone 1 differential protection has occured
on GEN 1?
A - The whole electrical network is still
operational.
B - AC BUS 1 is lost.
C - AC BUS 2 is lost.
What is the configuration of the electrical network
when a zone 2 differential protection has occured
on GEN 1?
A - The whole electrical network is still
operational.
B - AC BUS 1 is lost.
C - AC BUS 2 is lost.
How is a differential protection trip reset?
A - At any time from the front face of the
GCU.
B - At any time from the corresponding GEN
pushbutton.
C - Two reset actions maximum from the
corresponding GEN pushbutton.
What happens if an overload warning occurs?
A - The GCR and PR relays stay energized.
B - The GCR and PR relays are de-energized.
C - The GCR relay stays energized and PR
relay is de-energized.
What happens if a parallel feeder becomes open?
A - The GCR relay and the GLC stay closed.
B - The GCR relay stays closed and the GLC
opens.
C - The GCR relay and the GLC are opened.
TMUELAL01 LEVEL 3
EFFECTIVITY 24-22-00
Page 16
May 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 24 ELECTRICAL POWER
UF94200
EFFECTIVITY Page 156
ALL
24 - ELECTRICAL POWER
24-22-00 AC GENERATION - BUS TIE LOGIC
CONTENTS:
External Power ON
APU Gen and IDG 2 ON
IDG 1 Gen ON
Normal Configuration
Self Examination
TMUELAM02 LEVEL 3
EFFECTIVITY 24-22-00 Page 1
May 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 24 ELECTRICAL POWER
UF94200
EFFECTIVITY Page 157
ALL
AC GENERATION - BUS TIE LOGIC
The transfer circuit enables to supply both or either
AC electrical network from one of the four power
sources via Bus Tie Contactors.
EXTERNAL POWER ON
With the battery pushbuttons in the OFF position, as
soon as the external power is available and selected
ON, the Ground Power Control Unit supplies Bus Tie
Contactor 1.
BTC 1 being closed, the BAT BUS 3PP is supplied allowing
BTC 2 to be energized. The whole aircraft electrical
network is supplied by the External Power.
APU GEN AND IDG 2 ON
With APU generator ON and IDG 2 generator ON, the Bus
Tie Contactor 1 is energized and Bus Tie Contactor 2
is de-energized.
AC BUS 1 is supplied from APU GEN.
AC BUS 2 is supplied from IDG 2.
IDG 1 GEN ON
With only the IDG 1 generator ON, both Bus Tie
Contactors are energized.
The whole aircraft electrical network is supplied from
the IDG 1 generator. When the Bus Tie pushbutton is
set to OFF ( release out ) , both BTCs are de-energized
and IDG 1 Generator supplies AC BUS 1. AC BUS 2 is
lost.
NORMAL CONFIGURATION
In normal configuration both Bus Tie Contactors are
deenergized.
IDG 1 generator supplies AC BUS 1.
IDG 2 generator supplies AC BUS 2.
TMUELAM02-T01 LEVEL 3
EFFECTIVITY 24-22-00 Page 2
May 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 24 ELECTRICAL POWER
UF94200
EFFECTIVITY Page 158
ALL
AC GENERATION - BUS TIE LOGIC
TMUELAM02-P01 LEVEL 3
EFFECTIVITY 24-22-00 Page 3
May 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 24 ELECTRICAL POWER
UF94200
EFFECTIVITY Page 159
ALL
SELF EXAMINATION
What is the configuration if both BTCs are open?
A - APU GEN supplies AC BUS 1 and EXT PWR
supplies AC BUS 2.
B - APU GEN supplies AC BUS 1 and GEN 2
supplies AC BUS 2.
C - GEN 1 suppplies AC BUS 1 and GEN 2
supplies AC BUS 2.
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