R **ON A/C 063-099, 106-149, 153-199, 206-299, 301-399, 401-499,
(Ref. Fig. 001A)
**ON A/C ALL
-------------------------------------------------------------------------------FIN | FUNCTIONAL DESIGNATION | PANEL|ZONE|ACCESS | ATA | | | | DOOR | REF.
-------------------------------------------------------------------------------1PC1 CNTOR-DC NORM BUS 1 SWITCHING 120VU 212 831 24-35-55 1PC2 CNTOR-DC NORM BUS 2 SWITCHING 120VU 212 831 24-35-55 4PC CNTOR-DC ESS BUS SUPPLY 106VU 125 812 24-35-55
20PC HOLDER-FUSE 120VU 212 831 24-35-00
-------------------------------------------------------------------------------FIN | FUNCTIONAL DESIGNATION | PANEL | ZONE | ACCESS | ATA | | | | DOOR | REF. -------------------------------------------------------------------------------20PC1 FUSE 120VU 212 24-35-00
3. Operation/Control and Indicating
________________________________
A. DC NORM BUS SWITCHING Contactor Control (1PC1 and 1PC2) (Ref. Fig. 002) Contactor 1PC1 is supplied in normal configuration and when a TR is lost. Contactor 1PC2 is supplied when a TR is lost or in case of DC NORM BUS 1 SWITCHING contactor (1PC1) failure.
DC Essential & Normal Generation Switching - Component Location
Figure 001
R 1EFF : 001-049, 051-062, 101-105, 151-152, 1201-205, 1 1CES 1 111 24-35-00 Page 2 May 01/05
DC Essential & Normal Generation Switching - Component Location
Figure 001A
R 1EFF : 063-099, 106-149, 153-199, 206-299, 1 Page 324-35-00
1301-399, 401-499, 1 Aug 01/05
1 1
1CES 1
DC NORM BUS SWITCHING Contactor Control - Simplified Logic
Figure 002
1EFF : ALL 1 24-35-00Page 4 1 1 May 01/00R 1 1 1CES 1
R NOTE : There is an electric interlock between contactors 1PC2 and 4PC to____
R inhibit coupling between busbar 2PP and essential busbar 4PP.
R B. DC ESS BUS SPLY Contactor Control (4PC)
R (Ref. Fig. 003)
R Contactor 4PC supplies DC ESS BUS 4PP via BAT BUS 3PP if normal DC
R busbars 1PP and 2PP are not coupled (electrical interlock between
R contactors 1PC2 and 4PC).
R DC ESS BUS SPLY contactor (4PC) opens when a normal TR is lost (coupling
R of busbars 1PP and 2PP), in emergency conditions or when the DC NORM BUS
R 1 SWITCHING contactor (1PC1) is lost.
R
DC ESS BUS SPLY Contactor Control - Simplified Logic
Figure 003
CONTACTOR (1PC1,1PC2,4PC) - REMOVAL/INSTALLATION
________________________________________________
TASK 24-35-55-000-001
Removal of the Contactor (1PC1, 1PC2)
WARNING : MAKE SURE THAT NO AC OR DC POWER IS CONNECTED TO THE AIRCRAFT
_______
ELECTRICAL CIRCUITS.
THERE IS A RISK OF ELECTROCUTION IF THE AC OR DC POWER STAYS
CONNECTED.
1.
Reason for the Job
__________________
Self Explanatory
2.
Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------
REFERENCE QTY DESIGNATION
-------------------------------------------------------------------------------
No specific warning notices
No specific access platform 0.5 m (1 ft. 8 in.)
B. Referenced Information -------------------------------------------------------------------------------
REFERENCE DESIGNATION -------------------------------------------------------------------------------25-11-41-000-001 Removal of the Third Occupant Seat **ON A/C 001-049, 051-062, 101-105, 151-152, 201-205,
24-35-55-991-005 Fig. 401 R **ON A/C 063-099, 106-149, 153-199, 206-299, 301-399, 401-499,
24-35-55-991-005-A Fig. 401A
**ON A/C ALL
3. Job Set-up
__________
Subtask 24-35-55-010-051
A. Get Access
(1)
Remove the Third Occupant seat (Ref. TASK 25-11-41-000-001).
(2)
Remove the front panel on the bottom right side of the panel 120VU.
(3)
Put the access platform in position at the access door 121AL.
(4) Open the access door 121AL.
Subtask 24-35-55-860-050
B. Safety Precautions
(1)
Make sure that the external power connector is not connected to the aircraft EXT PWR receptacle.
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