2.3 Alternating Current Generator
The Alternating Current (AC) Generator (see
) bolts directly to the engine and supplies nominal 50/60Hz
power depending on the load requirement.
Generator sets will start at 50Hz. Once the unit is running, the voltage controller will read the voltage output of the
generator and adjust accordingly to keep the voltage within ISO limits. As the Container becomes loaded, voltage
drops and current increases, causing the generator set to adjust speed based on power demand and ambient
conditions. The unit will typically run at 50Hz and vary generator output via winding selection. The speed change to
60 Hz will typically occur when the ambient temperature is high and the unit is heavily loaded.
2.3.1
Voltage Controller
The Voltage Controller (VC) maintains ISO voltage via two-speed and single winding control. It is used to regulate
voltage in order to keep the generator output within ISO limits (see
). The Voltage Controller and Voltage
Controller fuses (VCF1 and VCF2) are located in the receptacle box (see
).
2.4 Engine
The engine (see
) is a vertical, in-line four cylinder diesel engine, model V2203-DI, that is directly
connected to the AC generator. The diesel engine takes air, compresses it and then injects fuel into the
compressed air. The heat of the compressed air ignites the fuel spontaneously.
Separately bound manuals covering the diesel engine are available:
• 62-10865, V2203-DI Engine Workshop
• 62-11695, V2203-DI Parts List
Figure 2.4 Generator and Engine - Unidrive Assembly
1) Generator
2) Generator Shockmount
3) Engine
4) Engine Shockmount
5) Starter
6) Poly V-Belt
- - - - -
1
4
3
5
2
6
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