DOC AIRBUS | AMM A320FEMERGENCY LIGHTING - DESCRIPTION AND OPERATION
** ON A/C NOT FOR ALL
** ON A/C NOT FOR ALL
** ON A/C NOT FOR ALL
1. General
The emergency lighting system is installed to:
** ON A/C NOT FOR ALL The emergency lighting system is installed to:
- illuminate the cabin and the exit areas during emergency conditions
- illuminate the escape route over the wings
- illuminate the emergency-escape hatch handles at the emergency exits
- supply power to the exit location signs and the exit marking signs
- supply power to the integral lights of the door escape slides
- illuminate the Floor-Proximity Emergency-Escape Path-Marking System (FPEEMS).
- illuminate the cabin and the exit areas during emergency conditions
- supply power to the exit location signs and the exit marking signs
- supply power to the integral lights of the door escape slides
- illuminate the Floor-Proximity Emergency-Escape Path-Marking System (FPEEMS).
2. Component Location
A. Emergency Power Supply Units (EPSU)
The EPSUs control and monitor the emergency lighting system. They are installed in the ceiling of the passenger compartment.
The EPSUs control and monitor the emergency lighting system. They are installed in the ceiling of the passenger compartment.
The EPSUs control and monitor the emergency lighting system. They are installed in the ceiling of the passenger compartment.
The EPSUs control and monitor the emergency lighting system. They are installed in the ceiling of the passenger compartment.
B. Cabin Emergency Lights
The ceiling emergency lights are installed to give sufficient illumination if there is an emergency condition. The lights are installed in the ceiling panels of the aisles, cross-aisles and exit areas.
The exit marking signs are installed to show the position of the exits. The lights are installed near each passenger/crew door and emergency exit.
The exit location signs are installed to show the position of the exit areas. The lights are installed in the aisles.
The ceiling emergency lights are installed to give sufficient illumination in an emergency condition. The lights are installed in the ceiling panels of the aisles, cross-aisles and exit areas.
The exit marking signs are installed to show the position of the exits. The lights are installed near each passenger/crew door and emergency exit.
The exit location signs are installed to show the position of the exit areas. The lights are installed in the aisles.
The ceiling emergency lights are installed to give sufficient illumination if there is an emergency condition. The lights are installed in the ceiling panels of the aisles, cross-aisles and exit areas.
The exit marking signs are installed to show the position of the exits. The lights are installed near each passenger/crew door and emergency exit.
The exit location signs are installed to show the position of the exit areas. The lights are installed in the aisles.
The ceiling emergency lights are installed to give sufficient illumination in an emergency condition. The lights are installed in the ceiling panels of the aisles, cross-aisles and exit areas.
The exit marking signs are installed to show the position of the exits. The lights are installed near each passenger/crew door and emergency exit.
The exit location signs are installed to show the position of the exit areas. The lights are installed in the aisles.
C. FPEEPMS
The FPEEPMS is installed on the floor or on the seats (as applicable) at the aisle and the emergency-exit area. The system gives floor-level illumination of the passenger aisles and escape routes if smoke hides the normal emergency lighting.
The system consists of a number of flexible photoluminescent strips. They are installed on the floor and on convertible seats (if applicable) on the two sides of the aisle and the emergency-exit area. The system gives the floor-level illumination of the passenger aisles and escape routes in the event that smoke obscures normal emergency lighting. The photoluminescent marking system supplies sufficient light for eight hours in a dark area when it is fully charged. When the system is fully discharged, a charge time of at least ten minutes with full brightness of the cabin lighting is necessary.
The FPEEPMS is installed on the floor or on the seats (as applicable) at the aisle and the emergency-exit area. The system gives floor-level illumination of the passenger aisles and escape routes if smoke hides the normal emergency lighting.
The system consists of a number of flexible photoluminescent strips. They are installed on the floor and on convertible seats (if applicable) on the two sides of the aisle and the emergency-exit area. The system gives the floor-level illumination of the passenger aisles and escape routes in the event that smoke obscures normal emergency lighting. The photoluminescent marking system supplies sufficient light for eight hours in a dark area when it is fully charged. When the system is fully discharged, a charge time of at least ten minutes with full brightness of the cabin lighting is necessary.
D. Integrated Escape Slide Lights
The escape slide lights are integrated in the escape slides. They come on when the escape slides are deployed.
The escape slide lights are integrated in the escape slides. They come on when the escape slides are deployed.
The escape slide lights are integrated in the escape slides. They come on when the escape slides are deployed.
The escape slide lights are integrated in the escape slides. They come on when the escape slides are deployed.
3. System Description
A. General
The cabin emergency-lighting system is supplied with power, when the AC normal busbar and the DC essential busbar are energized and the circuit breakers are closed.
You can control the cabin emergency-lighting system with the control switch EMER EXIT LT, installed in the cockpit. The pushbutton EMERG ON, installed on the FAP, is connected in parallel to the control switch EMER EXIT LT. The control switch EMER EXIT LT 4 WL has these three positions:
The cabin emergency-lighting system is supplied with power, when the AC normal busbar and the DC essential busbar are energized and the circuit breakers are closed.
You can control the cabin emergency-lighting system with the control switch EMER EXIT LT, installed in the cockpit. The pushbutton EMERG ON, installed on the FAP, is connected in parallel to the control switch EMER EXIT LT. The control switch EMER EXIT LT 4 WL has these three positions:
- OFF
- ARM
- ON.
(1) OFF Position
The cabin emergency lighting system is off.
The cabin emergency lighting system is off.
(2) ARM Position
The cabin emergency lighting system is set to the Automatic Mode. All cabin emergency lights are off if there is no malfunction of the aircraft power supply system.
The cabin emergency lighting system is set to the Automatic Mode. All cabin emergency lights are off if there is no malfunction of the aircraft power supply system.
(3) ON Position
The cabin emergency lighting system is energized; all cabin emergency lights are on. The lights are supplied from the DC essential busbar or, if there is a DC essential busbar failure, from the EPSU batteries.
The cabin emergency lighting system is energized; all cabin emergency lights are on. The lights are supplied from the DC essential busbar or, if there is a DC essential busbar failure, from the EPSU batteries.
4. Power Supply
The emergency lighting system is supplied with 115 VAC from the normal busbar 103XP-B and with 28 VDC from the essential busbar 801PP. The circuit breakers 1WL and 2WL are installed on the circuit breaker panel 49VU. The circuit breaker 3WL is installed on circuit breaker panel 122VU. When the DC essential aircraft power supply is not available, the integrated batteries of the EPSUs supply the cabin emergency lighting system. The batteries can supply power to the system for a minimum of 10 minutes.
** ON A/C NOT FOR ALL The emergency lighting system is supplied with 115 VAC from the normal busbar 103XP-B and with 28 VDC from the essential busbar 801PP. The circuit breakers 1WL and 2WL are installed on the circuit breaker panel 49VU. The circuit breaker 3WL is installed on circuit breaker panel 122VU. When the DC essential aircraft power supply is not available, the integrated batteries of the EPSUs supply the cabin emergency lighting system. The batteries can supply power to the system for a minimum of 10 minutes.
5. BITE Test
A. General
Each EPSU has two different integrated BITE functions:
Each EPSU has two different integrated BITE functions:
Each EPSU has two different integrated BITE functions:
- A system test
- A battery capacity test.
Each EPSU has two different integrated BITE functions:
- A system test
- A battery capacity test.
(1) System Test
The system test monitors the subsequent functions:
The system test monitors the subsequent functions:
- The aircraft AC power supply
- The aircraft DC power supply
- A short circuit on each output
- An overvoltage on each output
- The output voltage of the battery pack
- The battery heating device
- The correct function of the EPSU logic and switching circuits
- If the connected loads are in the pre-determined values.
(2) Battery Capacity Test
The battery capacity test monitors the batteries to make sure that:
The battery capacity test monitors the batteries to make sure that:
- The capacity of each EPSU battery is sufficient enough to supply its emergency lights for a minimum of 10 minutes
- The loss of battery power, between two consecutive battery capacity tests, is smaller than 0.40 Ah.
(3) System Test
The system test monitors the subsequent functions:
The system test monitors the subsequent functions:
- The aircraft AC power supply
- The aircraft DC power supply
- A short circuit on each output
- An overvoltage on each output
- The output voltage of the battery pack
- The battery heating device
- The correct function of the EPSU logic and switching circuits
- If the connected loads are in the pre-determined values.
(4) Battery Capacity Test
The battery capacity test monitors the batteries to make sure that:
The battery capacity test monitors the batteries to make sure that:
- The capacity of each EPSU battery is sufficient enough to supply its emergency lights for a minimum of 10 minutes
- The loss of the capacity of each battery, between two consecutive battery capacity tests, is smaller than 0.40 Ah.