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TB20 MAINTENANCE MANUAL 24 COMMUNICATIONS TB20飞机维护手册 电源(16)

时间:2011-10-31 12:26来源:蓝天飞行翻译 作者:航空
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Regulator - overvoltage relay 1 210 211R 24-30-00
Alternator 1 100 131 24-30-01
Battery 1 210 219 / 243 24-30-02
Alternator control 1 252 / 24-50-00
Battery relay 1 210 218A 24-30-03
Keep alive fuse 1 210 218A or 219 24-30-00
Engine monitoring cluster 1 251C / 31-10-00
Advisory panel 1 251L / 31-50-00
 
3. DESCRIPTION
A. Regulator - overvoltage relay
The regulator and its integrated overvoltage relay are the elements which regulate voltage and detect generation system overvoltages. When an overvoltage occurs in the system, they cut off the alternator energization and the amber (red on U.K. aircraft) warning light labeled "ALTr" illuminates.
They are located above and to the right of the front table and fixed on the firewall on cabin side. As a variant, they are installed on the L.H. panel strip to allow adjustment from inside the cockpit.
B. Alternator
The 70A alternator is located on the front section of the engine and is driven by the latter with a belt. It provides the energy necessary for operation to the various systems.
C. Battery
The lead-acid battery stores the energy provided by the alternator in order to ensure operation of the various systems when the alternator cannot supply energy (engine shut-down or failure).
It is located under the baggage compartment floor and is accessible through an inspection door located in the compartment.
Pre-MOD. 182
D. Voltmeter
A voltmeter is incorporated in the engine monitoring cluster to monitor electric generation system efficiency. When the alternator operates, the indication must stabilize in the green sector.
When the alternator is disconnected, the indication may go down to the yellow sector.
If the indication is positioned in the lower red sector, the battery must be removed and charged.
If the indication is positioned in the upper red sector while the alternator is on, the regulator must be adjusted.
E. Ammeter
An ammeter can be mounted on R.H. instrument panel, as an option. It is connected to the shunt, secured to aircraft structure, behind PL1 circuit-breaker panel.
The ammeter indicates current flow, in amperes, from the alternator to the battery, or from the battery to the electrical systems.
Post-MOD. 182
D. Voltmeter and ammeter
A digital indicator displaying the voltmeter or ammeter data is incorporated to the engine monitoring cluster, located on the upper part of the console. A switch, located on L.H. side of this indicator, enables to select either the voltmeter function (V) or the ammeter function (A).
Voltmeter
The main function of the voltmeter is to monitor electric generation system efficiency.
With the alternator operating, the indicated value must stabilize between 26 and 29 Volts. With the alternator off, the indicated value must not decrease below 24 Volts.
 
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