5A-8
5A G3.3A/G4.6A/GS4.6A/GS5.7A 50 HZ PORTABLE GENERATORS
5.11 Loss of Residual Magnetism in Rotor
General
If the rotor has been removed, the generator stored for a considerable time, or the rotor (field) connections reversed
during service, the residual magnetism may have been destroyed. Loss of magnetism will prevent the generator from
building voltage.
To check residual voltage, run the generator at normal no-load speed and measure the voltage at 120 VAC
receptacles. This voltage should be at least 1.5 volts. If the voltage is less than 1.5 volts, the residual magnetism must
be restored by “flashing” with a 12 volt battery.
Figure 5-11. Brush Type Generator
1031SD62
b
a
F2
F1
Z3
Z1
c