![]() However the larger sets used a completely different method. The output coils rotated with static field and four slip rings. Then the parallel winding resistor was set to give 240 volt then we put on a load quite high often full load and the series resistor was set to 240 volt.Īs load increased the voltage would vary but would be some where between the 220 and 240 range it was a little hit and miss. The generator was first set to 1500 RPM I used a frequency meter and set to 50 Hz but rev counter would do the same. ![]() One set in series the other in parallel the series set had a huge rectifier and parallel a small one and both also had resistors to set the output. ![]() Seem to remember out lighting towers used a Conveyors generator which had two sets of field windings. My method of repair back in 1980 was to swap parts good one to one which was not running until fault swapped then order up that part. Some used a large capacitor but I never worked out exactly how. Often disabled by farm managers as there was a tendency not to check oil before starting. There was one used a lot on the Falklands where the generator was also a started motor and switching on the lights auto started the generator. ![]() The Lister engine was used to drive many generators with many methods used to control them.
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