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How to calculate the pulley size to reach the maximum power
The RPM must be 10% maximum faster than the generator specification
NEW INSTALLATION
For a generator of 1750 RPM : 180 to 230 volts DC field
Diameter of the drive pulley divided by 1750 RPM multiplied by the
MAXIMUM RPM of the engine equal the diameter of the generator`s pulley.
D / 1750 RPM X engine RPM
For a generator of 2500 RPM : 230 volts DC field
Diameter of the drive pulley divided by 2500 RPM multiplied by the
MAXIMUM RPM of the engine equal the diameter of the generator`s pulley.
D / 2500 RPM X engine RPM
For a generator of 3450 RPM : 180 to 230 volts DC field
Diameter of the drive pulley divided by 3450 RPM multiplied by the
MAXIMUM RPM of the engine equal the diameter of the generator`s pulley.
D / 3450 RPM X engine RPM
EXISTING INSTALLATION
Note:
CHOOSE THE EASIEST PULLEY TO CHANGE
Calculation of the drive pulley
The RPM written on the generator`s name plate multiplied by the
diameter of the drive pulley.
Calculation of the generator`s pulley
The actual RPM divided by the RPM written on the generator`s name plate
multiplied by the diameter of the generator`s pulley.
