Standby Electric Generators for Emergency Farm Use Susan W. Gay, Extension Engineer, Biological Systems Engineering, Virginia Tech An emergency source of power is essential for any farm with mechanically ventilated production facilities, bulk milk-handling equipment, automated feeding systems, or facilities requiring constant and consistent heat or refrigeration. A standby power generator is an excellent investment to prevent costly losses during local power failures. This publication provides guidelines to …
Types of Generators Standby generators can be either engine- or tractor- driven. Engine-driven generators are often sold together with an engine as a single package or “genset.” The engine can be either manual or automatic start. Gasoline-, liquid-propane- (LP-) gas-, and diesel-fueled models are available. Engine-driven standby generators are often large, permanently-mounted, diesel units. The advantages of engine-driven generators include more efficient fuel use, longer periods of continuous operation, lower noise levels, and quicker start-up after power outages. The main disadvantage of engine-driven generators is the high initial cost. Tractor-driven generators are powered from the tractor’s power-take-off (PTO) shaft. The advantages of these generators include lower initial costs and less maintenance because an engine is eliminated. The disadvantages of tractor-driven generators include noisier operation and limited output capacity. These generators also take several minutes to start-up. Tractor-powered generators are often trailer-mounted for portability.
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