MEC 12 – 75 Speed Load Controller
- PMG output voltage is stable across load range
- Full kW rating of PMG is available for use
- Engine KW rating can be optimize
- Higher efficiency obtained
- Reduces risk of high no load voltage
UNLEASHING THE POWER OF YOUR ENGINE
When a customer asked to use a specific engine for its light tower, but wanted constant voltage output, Mecc Alte teamed up with Governors America Corp to ensure big results from a small footprint.
Using a Perkins 400 Series 3 cylinder 403F-15 engine, combined with a Mecc Alte PMG5 permanent magnet generator (PMG) controlled by the MEC 12-75 VDC, powered by GAC, provided significant benefits as an alternative to traditional alternator systems. PMG alternators are highly reliable and use only the amount of energy needed for a specific task to provide stable output voltage. Permanent magnets on the stator frame provide the magnetic fields that interact with the rotor field to produce torque, eliminating the need to power the stator, reducing electrical energy consumption. The downside is when using a magnetic field to generate voltage, output voltage decreases as load increases.
This is where the MEC 12-75 VDC, powered by GAC comes in. When the MEC 12-75 VDC Speed Load Controller is added to a PMG system the controller adjusts engine RPM to maintain constant output voltage through load rage adjustments.
The MEC 12-75 VDC, when connected to a proportional actuator and supplied with voltage signal from a DC generator, adjusts engine speed to maintain constant voltage. This variable speed operation results in decreased noise, significantly reduces fuel consumption and increases engine life.
INSTALLING A MAGNETIC SPEED SENSOR
- Drill and tap hole in flywheel housing using specified pilot drill. The threaded hole should centered over the flywheel ring teeth.
- Insert the magnetic speed pickup into the threaded hole until it makes contact with the gear.
- Back out the magnetic pickup 3/4 turn. The gap between the pickup and the gear should be between 0.020″-0.035″ (0.50 mm – 0.89 mm). Digital speed controllers may require less gap (1/4 turn) to provide an optimal signal.
- Wire leads should be twisted for the entire length from the pickup to the speed control unit. Use shielding if external interference exists or leads exceed 10 ft. in length.