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Oct 31/99
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 24 ELECTRICAL POWER
UF94200
EFFECTIVITY Page 465
ALL
CFDS SPECIFIC PAGE PRESENTATION
TRANSFORMER RECTIFIER UNIT (TR)
TR1, TR2 and TR3 have the same function.
Thus, only TR1 is shown on the MCDU.
The Transformer Rectifier protection module
de-energizes the DC bus control contactor in case of
no current flow (1A/TD=500ms) or overheat detection
(171°c).
When the fault disappears, the TR remains deactivated:
a RESET action is necessary to reactivate the TR.
2 cases are possible:
- RESET effective,
- RESET impossible.
TR EFFECTIVE RESET
If the fault detected by the TR1 protection module has
disappeared, the TR1 reset is effective, the TR1
protection module energizes TR1 control contactor.
TR IMPOSSIBLE RESET
If the fault detected by the TR1 protection module is
still active, TR1 RESET is impossible, the TR1 control
contactor stays de-energized (a trouble shooting
procedure is necessary).
Note: If the CFDS is not available, the TR protection
module can be reset from the pushbutton located
in the avionics bay.
TMUELSP02-T01 LEVEL 3
EFFECTIVITY 24-00-00 Page 2
Oct 31/99
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 24 ELECTRICAL POWER
UF94200
EFFECTIVITY Page 466
ALL
CFDS SPECIFIC PAGE PRESENTATION
TMUELSP02-P01 LEVEL 3
EFFECTIVITY 24-00-00 Page 3
Oct 31/99
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 24 ELECTRICAL POWER
UF94200
EFFECTIVITY Page 467
ALL
THIS PAGE INTENTIONALLY BLANK
TMUELSP02 LEVEL 3
EFFECTIVITY 24-00-00 Page 4
Oct 31/99
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 24 ELECTRICAL POWER
UF94200
EFFECTIVITY Page 468
ALL
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