Wound Field Units

Automotive sized wound field alternators, most with special components using rheostat control. Brush and bearing replacement is recommended yearly under continuous use. Available in 12, 24, and 48 volt DC. Truck size alternators use larger bearings. Also available in 12, 24, 48, and 120 volt DC. Brush and bearing replacement is recommended at two year intervals under continuous use. Several brushless versions are available. Up to 3300 watt potential at 48 volt.

Model 1200 PM

A permanent magnet alternator featuring a 3-phase stator offering 20-30% more output than a comparable wound field unit. Available in 12 to 480 volts AC or DC. The AC models are wild frequency for use with a step down transformer/rectifier for long distance transmission to a battery based system. The step down unit is sold separately. DC models are MPPT controller compatible. Electrically isolated with outdoor PVC junction box. Magnet strength is adjustable. Some have reconfigurable stators for applications with highly variable flow rates. 1350 watts maximum for this series are possible but its target is low flow applications under 500 watts.

Model 1800 PM

This is the next step up after model 1400. Physically larger alternator exhibiting some impressive efficiencies. 12 wire reconfigurable stator. Outputs in excess of 1800 watts are possible. Not appropriate for the smallest hydro sites.
Model 2500 PM: This is similar to model 1800 except with an exotic magnet rotor for the highest possible outputs within that size constraint. This model is not suitable for hydro sites with less than 1000 watts of site potential.