Thanks Skogsgurra,
I thought that was the reson it was there, but the way it is connected prevents it being useful since the Auxiliary Generator field is not suicided.
The system is a genuine Ward Leonard but is the only one I have ever seen with 2 generator armatures connected in series with...
Hi Guys, I have a rather old (circa 1930) mine winder that uses a Ward Leonard control system. The MG set comprises 2 generators to supply armature voltage control for the Winder motor. The smaller generator supplies voltage to the motor all the time whilst the larger only supplies voltage to...
Here in the Australian Coal Mining Industry SF6 is widely used and is considered very reliable. The only issue that may be worth considering in cold climates is the temperature at which sulphur hexafluoride liquifies. I am not sure of what temperature exactly but it is not that low.
Klockner Moeller circuit breakers are widely used in the underground coal mining industry in Australia. I have found them to be an excellent breaker and are very reliable.
Recently I had a blown fuse on the primary of a DYn11 high voltage transformer. The motors connected to the secondary of the transformers burnt out due to the reduced voltage. I believe that the motors did not "single Phase" in the true sense of the phrase but suffered from a reduced and...
