Smart Power Systems ER Series - Manual (Page 7)

Smart Power
®
Systems
A. C. MODULAR GENERATOR SYSTEM
Page 6 of 52
Description of Product
Hydraulic Generator Applications:
This heavy-duty electronically controlled generator system has been designed to meet the
most demanding mobile applications. It provides 120/240 volt AC @ 60 Hz from no-load to
full load, handling electrical loads of 6200, 8000 and 10000 watts, depending on model.
How our System works:
A generator driven by a hydraulic motor delivers the electrical power. The motor turns at
3600 RPM 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
piston pump delivers fluid to the proportional valve through installer-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.