AC Essential Generation Switching - Component Location
 Figure 001

 AC Essential Generation Switching - Component Location
 Figure 002

 INTENTIONALLY BLANK

 1 1

24-25-00Page 4
1 1 Feb 01/98 1 1 1CES 1

 Loss of AC Normal BUS 1XP - Block Diagram
 Control and Indicating Circuits
 Figure 003

R 1EFF : 001-049, 051-099, 101-105, 151-158, 1 24-25-00Page 5/6 1201-209, 1May 01/05 1 1 1CES

 Loss of AC Normal BUS 1XP - Block Diagram
 Control and Indicating Circuits
 Figure 003A

R 1EFF : 106-149, 159-199, 210-299, 301-399, 1 24-25-00Page 7/8 1 1 May 01/05 1 1 1CES R Loss of AC Normal BUS 1XP - Block Diagram R Control and Indicating Circuits R Figure 003B

R 1EFF : 401-499, 1 24-25-00Page 9/10 1 1 Aug 01/05 1 1 1CES  On the lower ECAM DU, ELEC page is displayed, "AC ESS" becomes amber, synoptic is modified.

 NOTE : MASTER CAUT light + single chime + amber message on the upper ECAM DU
____ confirm this failure.
 To recover AC ESS busses, the crew has to push AC ESS FEED pushbutton
 switch. AC ESS busses are then supplied by AC BUS 2.
 White ALTN legend illuminates on AC ESS FEED pushbutton switch, (FAULT
 legend remains on if AC ESS bus is still not supplied).
 On the lower ECAM DU, AC ESS becomes green again and synoptic is modified.

 AC ESSENTIAL GENERATION SWITCHING - ADJUSTMENT/TEST
___________________________________________________ TASK 24-25-00-710-001 Operational Test of the AC Essential Generation Switching
 1. Reason for the Job
__________________
 Refer to the MPD TASK: 242500-01 Make sure that the AC ESS and AC SHED ESS busbars can be energized with the AC2 normal busbar when the AC1 busbar is no longer energized.
 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-41-00-861-002 Energize the Aircraft Electrical Circuits from the External Power 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied
 from the External Power 31-60-00-860-001 EIS Start Procedure 31-60-00-860-002 EIS Stop Procedure
 3. Job Set-up
__________ Subtask 24-25-00-860-050
 A. Aircraft Maintenance Configuration
 (1)
 Energize the aircraft electrical circuits
 (Ref. TASK 24-41-00-861-002).

 (2)
 Do the EIS start procedure (Upper ECAM DU and lower ECAM DU only) (Ref. TASK 31-60-00-860-001).

 1EFF : ALL 1 24-25-00Page 501 1 1 Aug 01/05R 1 1 1CES 1

 Subtask 24-25-00-865-050
 B. Make sure that this(these) circuit breaker(s) is(are) closed:
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------106VU AC ESS BUS/STBY/CNTOR/CTL 5XC B08 106VU AC ESS/BUS NORM/CNTOR/CTL 4XC B03 123VU AC ESS/BUS ON/BUS 1 1XC AC12 123VU AC ESS/BUS ON/BUS 2 2XC AC01
 4. Procedure
_________
 Subtask 24-25-00-710-050
R A. Operational Test of the AC Essential Generation Switching.
 -------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
R R  1. On the ECAM control panel: - Push the ELEC key.  On the lower ECAM DU, on the ELEC page: - A green bar comes into view between the AC1 and AC ESS busbars. This 
R  shows that the AC1 busbar energizes the AC ESS busbar.
R  2. On the panel 123VU: - Open the circuit breaker 1XC.  On the F/O glareshield panel 130VU: - The MASTER CAUT light comes on.
 You can hear the single chime.
 The upper ECAM DU becomes black.
 The indications shown on the upper ECAM DU:
 ELEC AC ESS BUS FAULT then AC ESS FEED
 ... ALTN move to the lower ECAM DU.
R R  On the ELEC panel 35VU: - The FAULT legend of the AC ESS FEED pushbutton switch comes on.
R R  3. On the ELEC panel 35VU: - Release the AC ESS FEED pushbutton switch.  On the ELEC panel 35VU: - The FAULT legend of the AC ESS FEED pushbutton switch goes off.

 -------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
R R R R R R 
R R R R R R R  4. On the ECAM control panel: - Push the ELEC key. 
　
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