Usage:
 |
Do not attempt to remove or open the control console or generator cover with the engine-generator operating. High voltages are present in both the console and the unit. Components can be destroyed if metal to metal contacts are accidentally made. |
 |
A large percentage of reported electrical faults result from undetected mechanical deficiencies. Take time to examine the entire installation carefully and methodically. Separate mechanical from electrical problems.
A generator is essentially a constant speed device. RPM that is 5 to 10% above or below rated RPM can cause large variations.
Generator heating is the result of line current - the higher the line current, the greater the heat.
A KW meter does not necessarily indicate the KVA load on a generator because of the power factor of the load.
Before attempting repair, be familiar with the operating principles of the generator.
Recognize the apparent operational trouble and diagnose the trouble from the wiring diagram and troubleshooting guide.
When troubleshooting for voltage, a generator can usually be operated at a low RPM. The voltage and Hertz are directly proportional to generator speed, a four pole 60 Hertz, 240 volts, 1800 RPM generator operating at a low idle of 720 RPM produces 96 volts at 24 Hertz.