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TB20 MAINTENANCE MANUAL 24 COMMUNICATIONS TB20飞机维护手册 电源(24)

时间:2011-10-31 12:26来源:蓝天飞行翻译 作者:航空
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3) Connect a voltmeter to the mains (if necessary, use the cigar lighter).
Check with a test set
3) Remove the engine monitoring cluster without disconnecting it.
4) Connect the test set connector to the engine monitoring cluster test connector. Set the test set selector to "Alinn.1 (Power supply 1) : 28 V" or "Alim.2 (Power supply 2) : 28 V".
5) Turn on the test set. All
WARNING : TO REACH THE VOLTAGE REGULATOR WHEN THE ENGINE IS RUNNING, MOVE ALONG THE WINGS AND THE FUSELAGE WHILE REMAINING CONSTANTLY AND PHYSICALLY IN CONTACT WITH THE WINGS AND THE FUSELAGE.
6) Perform a test run-up - refer to 05-30-02.
7) Once the different engine parameters have stabilized, with the alternator switch-breaker closed, switch on the following equipment items to reach a load charge of approximately 20 A :
- landing and taxiing lights,
- navigation lights and anti-collision lights,
- radionavigation and NP systems.
8) Check that the on-load mains voltage at 2000 rpm is 28.4 VDC ± 0.1 and that the indication of the engine monitoring cluster voltmeter stabilizes inside the green sector. If necessary, adjust the voltage with the voltage regulator adjustment screw.
Pre-MOD. 160
9) Check the on-load regulation range between 1600 and 2500 rpm, the indication of the engine monitoring cluster voltmeter remains inside the green sector.
Post-MOD. 160
9) Check the on-load regulation range between 1200 and 2500 rpm, the indication of the engine monitoring cluster voltmeter remains inside the green sector.
AEAC
Validity : With front battery 24-30-00Page 601
(cm) OCT 02
 
10) Switch off the equipment items.
11) Check that the off-load voltage at 2000 rpm is within 28.7 and 30.1 VDC.
12) Check the amber (red on U.K. aircraft) warning light labeled "ALTr" for operation :
a) With the equipment items switched off, open the alternator switch-breaker and switch on the same equipment items. The warning light must come on.
b) With the engine rating within the regulation range (1600 to 2500 rpm Pre-MOD. 160, 1200 to 2500 rpm Post-MOD. 160), close the alternator switch-breaker. The warning light must go off.
13) Shut down the engine - refer to 05-30-02.
Check without a test set
14) Disconnect the voltmeter from the mains.
Check with a test set
14) Switch off the test set and disconnect the test set connector from the engine monitoring cluster.
15) Install the engine monitoring cluster.
All
16) Make sure all the tools and materials are removed and the work area is clean and free from debris.
17) Close inspection door 211 R.
2. CHECK OF LAMAR VOLTAGE REGULATOR OVERVOLTAGE SYSTEM (Figure 602)
A. Tools and consumable materials
- 1 stabilized power supply source adjustable within 24 and 36 V
 
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