Operational Test of the DC Generation Switching

TASK 24-32-00-710-001-A
Operational Test of the DC Generation Switching

ZONE: 210

1. Reason for the Job
Refer to the MPD TASK: 243200-01
OPERATIONAL CHECK OF DC GENERATION SWITCHING
Make sure that DC BUS1, DC BUS2 and DC ESS busbars are supplied if transformer TR1 or TR2 fails.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD
812, 822

C. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 31-32-00-860-004-A	Procedure to Get Access to the SYSTEM REPORT/TEST/ELEC Page
TASK 31-60-00-860-001-A	EIS Start Procedure
TASK 31-60-00-860-002-A	EIS Stop Procedure

3. Job Set-up
Subtask 24-32-00-860-050-A

A. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(2) In the cockpit, on the overhead panel 35VU, make sure that the BAT1 and BAT2 pushbutton switches are pushed. (On these pushbutton switches, the OFF legend is off).
(3) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).
(4) On the ECAM control panel, get the ELEC page.
(5) On the MCDU, get the ELEC menu on the SYSTEM REPORT/TEST page. (Ref. AMM TASK 31-32-00-860-004)

NOTE: If during the electrical transfers, the displays on the lower ECAM display unit or on the MCDU go out of view, do paragraph (4) or (5) again.

Subtask 24-32-00-010-050-A

B. Get access to the avionics compartment.
(1) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE at the access doors 812 and 822.
(2) Open the access doors 812 and 822.

Subtask 24-32-00-865-054-A

C. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	HYD/HYD PWR/B WARN/& CTL	2702GJ	C12
123VU	B HYD/ELEC PUMP	2701GJ	AB09

Subtask 24-32-00-865-050-A

D. Make sure that this(these) circuit breaker(s) is(are) closed:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	AIR COND/AVNCS VENT/CTL	6HQ	D06
** ON A/C NOT FOR ALL
49VU	AIR COND/CARGO FIRE/EXTIG/BTL1	1WX	C03
** ON A/C NOT FOR ALL
49VU	AIR COND/CARGO/FIRE/EXTIG/BTL1	1WX	C04
** ON A/C NOT FOR ALL
49VU	AIR COND/CARGO/FIRE/EXTIG/BTL1	1WX	C03
** ON A/C ALL
105VU	ELEC/HOT BUS/702PP SPLY	12PB2	E02
105VU	ELEC/HOT BUS/701PP SPLY	12PB1	E01
106VU	AC ESS/BUS NORM/CNTOR/CTL	4XC	B03
106VU	ESS TR/CNTOR/CTL	5PE	C02
106VU	ESS TR/SPLY	4PE	C01
121VU	APU/FIRE/EXTIG/SQUIB/A	1WF	L38
121VU	APU/FIRE/LP VALVE/NORM	4WF	M42
121VU	HYDRAULIC/BRAKING AND STEERING/SYS1/CTL	1GG	M34
** ON A/C NOT FOR ALL
122VU	AIR COND/ZONE TEMP CTL/28VDC/SYS1	3HK	V19
** ON A/C NOT FOR ALL
122VU	AIR COND/CARGO/FIRE/EXTIG	1WX	T19
** ON A/C ALL
122VU	ELEC/CNTOR/DC BUS/TIE 1/FAULT	14PC	U24
122VU	ELEC/AC/BUS1/CTL	17XN1	V25
122VU	LIGHTING/WING/STROBE	10LV	V05
122VU	ELEC/TR2/FAULT/DC BUS TIE/CONFIG	7PC2	W30
122VU	ELEC/TR1/FAULT/DC BUS TIE/CONFIG	7PC1	W29
122VU	ELEC/CNTOR/ESS/DC BUS/TIE	3PC	W26
122VU	ELEC/CNTOR/DC/BUS/TIE1	9PC	W25
122VU	ELEC/TR2/MONG	3PU2	X26
122VU	ELEC/TR1/MONG	3PU1	X25
123VU	TR1/SPLY	2PU1	AB10
123VU	TR2/214XP/SPLY	2PU2	AB04
123VU	AC ESS/BUS ON/BUS 1	1XC	AC12
123VU	AVNCS VENT/BLOWER/FAN	1HQ	AD10
124VU	TR2/CNTOR/SPLY	4PU2	BC01
125VU	TR1/CNTOR/SPLY	4PU1	CF01
** ON A/C NOT FOR ALL
2000VU	WATER SYSTEM-QANT-IND	1MA	B01
** ON A/C NOT FOR ALL
2000VU	SEMI AUTO CLS-FWD	3MY	E08
2000VU	SEMI AUTO CLS-FWD	2MY	E06
** ON A/C NOT FOR ALL
2001VU	WATER SYS-QUANT-IND	1MA	B06
** ON A/C NOT FOR ALL
2001VU	SEMI AUTO CLS-AFT	103MY	D08
2001VU	SEMI AUTO CLS-AFT	102MY	D06

4. Procedure
Subtask 24-32-00-710-050-A

A. Operational Test of the DC Generation Switching

NOTE: This test is for the system 1. For the other system(s), use the indications between the parentheses.

ACTION	RESULT
1.On the overhead panel, on ELEC panel 35VU: Release the BAT1 and BAT2 pushbutton switches.	On the overhead panel, on ELEC panel 35VU: The OFF legends of the BAT1 and BAT2 pushbutton switches come on.
2.On the overhead panel, on ELEC panel 35VU: Push the BAT1 and BAT2 pushbutton switches.	On the overhead panel, on ELEC panel 35VU: The OFF legends of the BAT1 and BAT2 pushbutton switches go off.
3.On the rear circuit breaker panel, on panel 122VU: Open circuit breaker 3PU1(2).	On the lower ECAM display unit: The TR1(2) supplies the DC1(2) busbar.
4.On the rear circuit breaker panel, on panel 125VU (124VU): Open circuit breaker 4PU1(2).	On the upper ECAM display unit: The TR1(2) FAULT indication comes into view.
	On the lower ECAM display unit: The TR1(2) no longer supplies the DC1(2) busbar, The DC2(1) busbar supplies the DC1(2) busbar, through the DC BAT busbar, The AC ESS busbar supplies the DC ESS busbar through the ESS TR.
5.On the rear circuit breaker panel, on panels 122VU and 125VU (124VU): Close circuit breakers 3PU1(2) and 4PU1(2).	There is no change.
6.On the MCDU, on the ELEC page: Push the line key adjacent to the TR1(2) indication.	On the MCDU: The TR1(2) page comes into view.
7.On the MCDU: Push the line key adjacent to the RESET indication.	On the TR1(2) page: The NO FAULT indication comes into view.
	On the upper ECAM display unit: The TR1(2) FAULT indication goes out of view.
	On the lower ECAM display unit: The TR1(2) supplies the DC1(2) busbar.
8.On the MCDU: Push the line key adjacent to the RETURN indication until the ELEC page comes into view.
9.On the overhead panel, on ELEC panel 35VU: Release the AC ESS FEED pushbutton switch.	On the overhead panel, on ELEC panel 35VU: The ALTN legend of the AC ESS FEED pushbutton switch comes on.
10.On the overhead panel, on ELEC panel 35VU: Push the AC ESS FEED pushbutton switch.	On the overhead panel, on ELEC panel 35VU: The ALTN legend of the AC ESS FEED pushbutton switch goes off.
11.On the ECAM control panel: Push the ELEC key to get the ELEC page.	On the lower ECAM display unit: The ESS TR no longer supplies the DC ESS busbar (the normal configuration comes into view). NOTE: It is possible that the ESS TR continues to supply the DC ESS busbar. If this occurs, on the AC power center 123VU, open and close circuit breaker 1XC. Make sure that the ESS TR no longer supplies the DC ESS busbar.
12.Wait until the BAT1 and the BAT2 are not connected to the DC BAT busbar.	On the lower ECAM display unit: There is no green line between the BAT1 and the DC BAT busbar. There is no green line between the BAT2 and the DC BAT busbar.
13.On the rear circuit breaker panel, on panel 123VU: Open circuit breaker 2PU1(2).	On the upper ECAM display unit: The TR1(2) FAULT indication comes into view.
	On the lower ECAM display unit: The TR1(2) no longer supplies the DC1(2) busbar, The DC2(1) busbar supplies DC1(2) busbar through the DC BAT busbar, The voltage from TR1(2) = 0V, The AC ESS busbar supplies the DC ESS busbar through the ESS TR.
14.On the rear circuit breaker panel, on panel 123VU: Close circuit breaker 2PU1(2).	On the lower ECAM display unit: The voltage from TR1(2) is approximately 28V.
15.On the MCDU, on the ELEC page: Push the line key adjacent to the TR1(2) indication.	On the MCDU: The TR1(2) page comes into view.
16.On the MCDU: Push the line key adjacent to the RESET indication	On the MCDU, on the TR1(2) page: The NO FAULT indication comes into view.
	On the upper ECAM display unit: The TR1(2) FAULT indication goes out of view.
	On the lower ECAM display unit: The TR1(2) supplies the DC1(2) busbar.
17.On the MCDU, push the line select key adjacent to the RETURN indication until the CFDS menu page comes into view.
18.On the overhead panel, on ELEC panel 35VU: Release the AC ESS FEED pushbutton switch.	On the overhead panel, on ELEC panel 35VU: The ALTN legend of the AC ESS FEED pushbutton switch comes on.
19.On the overhead panel, on ELEC panel 35VU: Push the AC ESS FEED pushbutton switch.	On the overhead panel, on ELEC panel 35VU: The ALTN legend of the AC ESS FEED pushbutton switch goes off.
20.On the ECAM control panel: Push the ELEC key to get ELEC page.	On the lower ECAM display unit: The ESS TR no longer supplies the DC ESS busbar (the normal configuration comes into view). NOTE: It is possible that the ESS TR continues to supply the DC ESS busbar. If this occurs, on the AC power center 123VU, open and close circuit breaker 1XC. Make sure that the ESS TR no longer supplies the DC ESS busbar.

5. Close-up
Subtask 24-32-00-865-055-A

A. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	HYD/HYD PWR/B WARN/& CTL	2702GJ	C12
123VU	B HYD/ELEC PUMP	2701GJ	AB09

Subtask 24-32-00-860-051-A

B. Put the aircraft back to its initial configuration.
(1) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
(2) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

Subtask 24-32-00-410-050-A

C. Close Access
(1) Close the access doors 812 and 822.
(2) Remove the access platform(s).

[Rev.10 from 2021] 2026.03.31 23:23:19 UTC