DC MAIN DISTRIBUTION - DESCRIPTION AND OPERATION
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 1. General
_______
 The main 28 VDC distribution network corresponds to busbars 1PP, 2PP, 3PP,
 6PP and associated sub-busbars,
 **ON A/C 001-049, 051-060, 101-102, 201-201,
 (Ref. Fig. 001) R **ON A/C 061-099, 103-149, 151-199, 202-299, 301-399, 401-499,
 (Ref. Fig. 001A)
 **ON A/C ALL

 2. Component Location
__________________
 **ON A/C 001-049, 051-060, 101-102, 201-201,

 (Ref. Fig. 002) -------------------------------------------------------------------------------FIN | FUNCTIONAL DESIGNATION | PANEL|ZONE|ACCESS | ATA | | | | DOOR | REF. -------------------------------------------------------------------------------8PN CNTOR-DC SVCE BUS NORM SPLY 120VU 125 812 24-61-55 R **ON A/C 061-099, 103-149, 151-199, 202-299, 301-399, 401-499,
 **ON A/C 061-062, 103-105, 151-152, 202-205,
 (Ref. Fig. 002) R **ON A/C 063-099, 106-149, 153-199, 206-299, 301-399, 401-499,
 (Ref. Fig. 002A)R **ON A/C 061-099, 103-149, 151-199, 202-299, 301-399, 401-499,

 -------------------------------------------------------------------------------FIN | FUNCTIONAL DESIGNATION | PANEL|ZONE|ACCESS | ATA | | | | DOOR | REF.
 -------------------------------------------------------------------------------8PN CNTOR-DC SVCE BUS NORM SPLY 120VU 125 812 24-61-55 10PN CONTACTOR 120 VU 212 831 24-61-00
 **ON A/C ALL
 3. Operation/Control & Indicating
______________________________
 Busbars 1PP, 3PP are supplied by TR1.
 Busbars 2PP, 6PP are supplied by TR2.

 NOTE : In case of loss of one main TR, both main busbars are supplied by the
____
 remaining main TR.

 Busbar 6PP is supplied in flight and/or on ground. This busbar can be
 supplied, independently from the main network, by the ground power unit via
 TR2 in ground service configuration (Ref. 24-43-00, P. Block 1).
 In case of loss of supply, a warning is triggered on the ECAM system,
 (Ref. Fig. 003)
 In case of loss of main busbars, the ELEC page is automatically displayed on
 the ECAM lower display unit:
 (Ref. Fig. 004, 005, 006, 007)

 DC Main Distribution - General
 Figure 001

R 1EFF : 001-049, 051-060, 101-102, 201-201, 1 24-61-00Page 3/4 1 1 May 01/05 1 1 1CES
1

 DC Main Distribution - General
 Figure 001A

R 1EFF : 061-099, 103-149, 151-199, 202-299, 1 24-61-00Page 5/6 1301-399, 401-499, 1Aug 01/05 1 1 1CES

 DC Main Distribution - Component Location
 Figure 002

R 1EFF : 001-049, 051-062, 101-105, 151-152, 1 24-61-00Page 7 1201-205, 1May 01/05 1 1 1CES 1

 DC Main Distribution - Component Location
 Figure 002A

R 1EFF : 063-099, 106-149, 153-199, 206-299, 1 24-61-00Page 8 1301-399, 401-499, 1Aug 01/05 1 1 1CES 1

 DC Main Distribution - ECAM Warnings Figure 003 
R 1EFF : 1 1 1CES  ALL  1 111 24-61-00 Page 9 May 01/00

 DC BUS 1 FAULT - Upper and Lower ECAM display Unit Figure 004 (SHEET 1)
 1EFF : 1 1R 1CES  ALL  1 11 1 24-61-00 Page 10 Feb 01/99

 DC BUS 1 FAULT - Upper and Lower ECAM display Unit Figure 004 (SHEET 2)
 1EFF : 1 1R 1CES  ALL  1 11 1 24-61-00 Page 11 Feb 01/99

 DC BUS 2 FAULT - Upper and Lower ECAM Display Unit Figure 005 (SHEET 1)
 1EFF : 1 1R 1CES  ALL  1 11 1 24-61-00 Page 12 Feb 01/99

 DC BUS 2 FAULT - Upper and Lower ECAM Display Unit Figure 005 (SHEET 2)
 1EFF : 1 1R 1CES  ALL  1 11 1 24-61-00 Page 13 Feb 01/99

 DC BUS 1 and DC BUS 2 FAULT - Upper and Lower ECAM Display Unit Figure 006 (SHEET 1)
 1EFF : ALL 1 24-61-00Page 14 1 1 Feb 01/99R 1 1 1CES 1

 DC BUS 1 and DC BUS 2 FAULT - Upper and Lower ECAM Display Unit Figure 006 (SHEET 2)
 1EFF : ALL 1 24-61-00Page 15 1 1 Feb 01/99R 1 1 1CES 1

 DC BAT BUS FAULT - Upper and Lower ECAM Display Unit Figure 007 (SHEET 1)
 1EFF : ALL 1 24-61-00Page 16 1 1 Feb 01/99 1 1 1CES 1

 DC BAT BUS FAULT - Upper and Lower ECAM Display Unit Figure 007 (SHEET 2)
 1EFF : ALL 1 24-61-00Page 17 1 1 Feb 01/99 1 1 1CES 1 CONTACTOR (8PN) - REMOVAL/INSTALLATION

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