HIPower HW400A, Service Manual

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Rotor for Multi-Pole
Welder and Generator
Main Stator
Exciter Stator
(Magnetic field)
Exciter(Armature)
Rotor
Short pitch Coil
4.3 Welding Feature
4.3.1 Duty Cycle
・ High efficient alternator has achieved the rated duty cycle 60% for 390A and 100%
for 302A.
Multi-pole rotor has made the stator winding pitch short (i.e. coil length short) which
has brought the coil resistance decreasing. In addition to it, bigger diameter coil has
also brought coil resistance decreasing. These factors have made the alternator high
efficient.
・
The high efficient alternator has decreased the engine load
The high efficiency alternator has decreased the load to engine, which will bring the
engine life longer. In addition to that, it has become less occasion of engine
overheat owing to wider engine power margin.
4.3.2 Low Noise and Low Fuel Consumption
・
The engine speed is automatically controlled to comply with the load, which has made
low noise and fuel consumption. The fuel consumption is remarkably low. It is
approx. 29 hour successive operation at 220A welding with full fuel tank, for example.
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