A320 Electrical Schematic
The A320 electrical schematic (DSC-24-10-10) mentions the following terminology:
AC BUS 1 (1XP) AC BUS 2 (2XP) AC ESS (4XP) AC STAT INV (9XP) DC BUS 1 (1PP) What is 1XP 2XP 1PP |
Looks like the FIN. (Functional Item Number).
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As TURIN says. The following is the explanation from the training manual:MAIN BUSBAR IDENTIFICATION
The main busbars are identified using: - a sequence number, - letters XP for AC busbars and PP for DC busbars, - a phase letter when applicable. The first number (1 or 2 or 3...) indicates the busbar number. The letters XP or PP indicate the corresponding power form. XP for alternating Current and PP for Direct Current. Example: - 1XP: main alternating current busbar 1(MAIN AC BUS 1), - 1PP: main direct current busbar 1 (MAIN DC BUS 1), - 1XP-A: MAIN AC BUS 1 phase A, - 6PP: direct current service busbar (DC SVCE BUS). SUB-BUSBAR IDENTIFICATION The sub-busbars are identified in the same way as the main busbar, but with three identification digits: - the first is identical to the number of the corresponding main busbar, - the two following digits are the sub-busbar numbers. Example: - 401XP is the first sub-busbar of the AC ESS BUS, - 601PP is the first sub-busbar of the SERVICE BUS. It should be noted that for the AC network, the thirties are used for the 26V-400 Hz distribution. Example: 103XP, are sub-busbar of the main busbar 1XP, but 131XP is the 26V-400 Hz distribution sub-busbar. |
Originally Posted by QA1
(Post 10956563)
As TURIN says. The following is the explanation from the training manual:MAIN BUSBAR IDENTIFICATION
The main busbars are identified using: - a sequence number, - letters XP for AC busbars and PP for DC busbars, - a phase letter when applicable. The first number (1 or 2 or 3...) indicates the busbar number. The letters XP or PP indicate the corresponding power form. XP for alternating Current and PP for Direct Current. Example: - 1XP: main alternating current busbar 1(MAIN AC BUS 1), - 1PP: main direct current busbar 1 (MAIN DC BUS 1), - 1XP-A: MAIN AC BUS 1 phase A, - 6PP: direct current service busbar (DC SVCE BUS). SUB-BUSBAR IDENTIFICATION The sub-busbars are identified in the same way as the main busbar, but with three identification digits: - the first is identical to the number of the corresponding main busbar, - the two following digits are the sub-busbar numbers. Example: - 401XP is the first sub-busbar of the AC ESS BUS, - 601PP is the first sub-busbar of the SERVICE BUS. It should be noted that for the AC network, the thirties are used for the 26V-400 Hz distribution. Example: 103XP, are sub-busbar of the main busbar 1XP, but 131XP is the 26V-400 Hz distribution sub-busbar. |
Thanks Turin
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