AMM 27-90-00对于ELAC 1、SEC 1供电逻辑有以下描述：
The ELAC1 and the SEC1 are supplied from aDC essential busbar (4PP for the ELAC1 and SEC1), the battery 1 taking overinstantaneously through a dedicated diode device (Power Supply Decoupling Unit)when the voltage level drops below the battery output voltage.
A relay ensures the battery supply linebreaking on the ground 30s after the second engine is shut down. (after thethird hydraulic pressure drop down).
根据描述，结合上图，可以得出以下信息：
1. 正常情况下ELAC 1、SEC 1由401PP供电；
2. 非正常情况下，当401PP电压小于703PP输出电压时，43CE（PSDU）将ELAC 1、SEC 1供电切换至703PP；
3. 当最后一个液压系统释压，30s后ELAC 1、SEC 1将切断35CE1供电，703PP将不会向43CE供电。
ASM 27-92-02中有以下描述：NOTE：relaysclosed as long as one HYD pressure is high，and opened 30s afterthe last one falls.relaysreenergized when the blue HYD pressure fall and during landing phase as soon asthe NLG is extended.
则可得出：
4. 一个液压系统有压力时35CE1闭合，703PP供电给ELAC 1、SEC 1；
5. 当蓝系统压力下降或着陆阶段前起落架伸出时，35CE1闭合。
400小时工卡第一部分中（初始状态，蓝泵增压）|
| ACTION 动作 | RESULT 结果 | 1. Open the circuit breakers 15CE1 and
21CE1. 拔出跳开关15CE1和21CE1。 | On the FLT CTL section of the overhead panel 23VU: -the FAULT legends of the ELAC 1 and SEC 1 pushbutton switches are off.
在飞行控制部分头顶面板23VU上： ELAC 1和SEC 1按键电门上的FAULT灯灭。 | 2. On the overhead panel 50VU: -release the BLUE PUMP OVRD pushbutton switch.
在头顶面板50VU上： 释放BLUE PUMP OVRD按键电门。 | On the overhead panel 50VU: -the ON legend of the BLUE PUMP OVRD pushbutton switch goes off.
在头顶面板50VU上： BLUE PUMP OVRD按键电门上的ON灯灭。 | | | On the overhead panel 23VU: -the FAULT legends of the ELAC 1 and SEC 1 pushbutton switches are off.
在头顶面板23VU上： ELAC 1和SEC 1按键电门上的FAULT灯灭。 | | | After approximately 30 seconds: - On the overhead panel 23VU, the FAULT legends of the ELAC 1 and SEC 1 pushbutton switches come on. -On the upper ECAM display unit, the ELAC 1 FAULT and SEC 1 FAULT warnings come into view. -On the lower ECAM display unit, the ELAC 1 and SEC 1 legends change to amber.
大约30秒后： 在头顶面板23VU上，ELAC 1和SEC 1的FAULT灯亮。 在上ECAM显示组件上，ELAC 1 FAULT和SEC 1 FAULT警告出现。 在下ECAM显示组件上，ELAC 1和SEC 1显示变成琥珀色。 |
3. On the overhead panel 50VU: -push the BLUE PUMP OVRD pushbutton switch.
在头顶面板50VU上： 按压BLUE PUMP OVRD按键电门。 | On the overhead panel 50VU: -the ON legend of the BLUE PUMP OVRD pushbutton switch comes on.
在头顶面板50VU上： BLUE PUMP OVRD按键电门上的ON灯亮。 | | | The above warnings are still shown.
上面提及的警告仍然出现。 | 4. Close the circuit breakers 15CE1 and 21CE1.
闭合跳开关15CE1和21CE1。 | On the FLT CTL section of the overhead panel 23VU: -the FAULT legends of the ELAC 1 and SEC 1 pushbutton switches go off.
在飞行控制部分头顶面板23VU上： ELAC 1和SEC 1按键电门上的FAULT灯灭。 | | | On the upper ECAM display unit: -the ELAC 1 FAULT and SEC 1 FAULT warnings go out of view.
在上ECAM显示组件上，ELAC 1 FAULT和SEC 1 FAULT警告消失。 | | | On the lower ECAM display unit: - the ELAC 1 and SEC 1 legends change to green.
在下ECAM显示组件上，ELAC 1和SEC 1显示变成绿色。 |
请问，第3步增压蓝泵之后，按照上述结论4,35CE1应该闭合，备用电源应该给ELAC 1、SEC 1供电，但为什么手册说警告现象仍然存在呢？？ 或者说是我对供电逻辑理解还不到位？？
求各位指点啊。
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整理总结的很直观全面的21空调系统
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发表于 2017-4-24 14:39:58
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