#Lister diesel generator generator
#Lister diesel generator full

Next was 4 x 400MW units in local power station. I returned to UK where we used far bigger just two generators at 600MW each but also 12 x 1.5MW Ruston engined generators as stand-by. Sizes varied 1.5kVA to around the 50kVA after that tended to use RR engines 250kVA and 500kVA the permanent generators were Ruston at 1.5MW each. Normal generators had a 10% droop but the specials could be as low as 2% droop with electronic governors. With the larger generators we would synchronize with other generators and so the droop was very important. The output was in the form of 12 windings which could be configured for 55-0-55, 63-63-63, 240 single phase and 415 three phase and the output was very steady. These needed the 12 volt battery to get everything started. This caused an AC voltage in one half of the rotor which was rectified by rotating diodes and fed to other half of rotor which in turn caused an output from the output stator. These used an AVR to supply current to a static field. However the larger sets used a completely different method. The output coils rotated with static field and four slip rings.

#Lister diesel generator full

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.ДЄs load increased the voltage would vary but would be some where between the 220 and 240 range it was a little hit and miss.

#Lister diesel generator generator

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.