A lift Otis motor-generator set. Lift motors were not easy to run directly off AC in those days so the mains AC needed to be converted to DC to feed the motor. This was achieved by connecting the shaft of an AC motor directly to the shaft of a DC generator. It doesn’t sound particularly efficient but it did the job. 24 Sep 2011
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See full size image Caption: A lift Otis motor-generator set, 24 Sep 2011 Description: A lift Otis motor-generator set. Lift motors were not easy to run directly off AC in those days so the mains AC needed to be converted to DC to feed the motor. This was achieved by connecting the shaft of an AC motor directly to the shaft of a DC generator. It doesn't sound particularly efficient but it did the job. 24 Sep 2011 Alt text: A lift Otis motor-generator set, 24 Sep 2011 Image credit: Team Urbex - ATF Photo subject date: 24/09/2011 |