Smart Power Systems LR Series - Manual (Page 7)

Smart Power
®
Systems
A. C. MODULAR GENERATOR SYSTEM
Page 6 of 49
Description of Product
Hydraulic Generator Applications:
This heavy-duty electronically controlled generator system has been designed to meet the
most demanding mobile applications. The 60 Hz systems provide 120/240 volt AC @ 6200
or 8000 watts depending on model. The 50 Hz system provides 110/220 volt AC @ 6200
watts.
How our System works:
A generator driven by a hydraulic motor delivers the electrical power. The motor turns at
3000 RPM for the 50 Hz system and at 3600 RPM for the 60 Hz systems as controlled by
the flow of hydraulic fluid through an electrically controlled proportional valve. The
proportional valve is directly driven by the system controller. The gear pump delivers fluid
to the proportional valve through supplied PTO mounted to the vehicle’s transmission.
Heat generated in the hydraulic fluid as it passes through the various components in the
system is cooled by a heat exchanger and fan. A filter removes impurities in the fluid. A
venturi boost assembly monitors the volume of oil in the hydraulic circuit and feeds the
system from the reservoir as needed.
Essentially, the only system maintenance required is periodic replacement of the hydraulic
fluid filter and adding hydraulic fluid to maintain the fluid level (when the hydraulic fluid is
between 70° and 80° F, it should be at the ¾ mark on the sight gauge).
Generator hydraulic and electrical schematics: see Figure 1, and Figure 2.