DOC AIRBUS | AMM A320FCOCKPIT EQUIPMENT RACKS - DESCRIPTION AND OPERATION
** ON A/C NOT FOR ALL
1. General
The Rear Panel 120VU is installed in the cockpit, it is located on the right hand side, behind the First Officer seat. This rack houses:
** ON A/C NOT FOR ALL The Rear Panel 120VU is installed in the cockpit, it is located on the right hand side, behind the First Officer seat. This rack houses:
- in the lower section, the AC and DC electrical power centers,
- in the center section, the primary circuit breakers and the power circuits,
- in the upper section, the system circuit breakers requiring no action in flight.
2. Component Location
** ON A/C NOT FOR ALL 
Rear Panel 120VU - Component Location| FIN | FUNCTIONAL DESIGNATION | PANEL | ZONE | ACCESS DOOR | ATA REF |
|---|---|---|---|---|---|
| ** ON A/C ALL | |||||
| 120VU | REAR PNL | 212 | 93-00-00 | ||
A. Rack Lower Section
This section of the rack is divided into several compartments. Each compartment houses electrical generation equipment such as contactors, TRs, etc. associated with the corresponding systems:
This section of the rack is divided into several compartments. Each compartment houses electrical generation equipment such as contactors, TRs, etc. associated with the corresponding systems:
- system 1 AC compartment associated with engine 1 generator,
- system 2 AC compartment associated with engine 2 generator,
- APU system and ground power unit AC compartment associated with the APU generators and the ground power unit,
- system 1 DC compartment,
- system 2 DC compartment.
B. Rack Center Section
This section of the rack houses the primary circuit breakers associated with the electrical generation systems installed in the lower section of the rack and some primary circuit breakers.
These circuit breakers are grouped per system, their functional designation is given and they are geographically located by means of placards.
This section of the rack houses the primary circuit breakers associated with the electrical generation systems installed in the lower section of the rack and some primary circuit breakers.
These circuit breakers are grouped per system, their functional designation is given and they are geographically located by means of placards.
C. Rack Upper Section
This section of the rack houses, split over two panels, all the distribution circuit breakers protecting the electrical lines supplying the systems.
These circuit breakers are grouped per system, their functional designation is given and they are geographically located by means of placards.
This section of the rack houses, split over two panels, all the distribution circuit breakers protecting the electrical lines supplying the systems.
These circuit breakers are grouped per system, their functional designation is given and they are geographically located by means of placards.
D. Access to the various components
Access to the AC and DC electrical power centers is gained by removing the cover plates.
Access to the inside of the circuit breaker panels is gained by opening the hinged panels.
Access to the AC and DC electrical power centers is gained by removing the cover plates.
Access to the inside of the circuit breaker panels is gained by opening the hinged panels.