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Generators & Electric Motors General Discussion

Mystery Machine! AC Generator? Double Current Generator?


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Old 10-14-2018, 01:36:39 PM
Vanman Vanman is offline
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Default Mystery Machine! AC Generator? Double Current Generator?

This unmarked two pole machine is rather odd. It seems that it ouputs 120 volts, AC at around 1800 rpm, making 30 cycles... More testing is going to be required. Please see the video for more details.

https://youtu.be/jLn4F93-d6o

Keith
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Old 10-14-2018, 05:17:03 PM
Steve Dawkins Steve Dawkins is offline
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Default Re: Mystery Machine! AC Generator? Double Current Generator?

The only 30 Hz application I am familiar with is the ring voltage for telephones. I think the actual voltage was in the 90-105 volt range. This may have been the ring generator for a large PBX system, and driven by a fractional HP electric motor.
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Old 10-14-2018, 06:21:11 PM
radiodoc radiodoc is offline
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Default Re: Mystery Machine! AC Generator? Double Current Generator?

I kinda lean toward a DC motor operated rotary converter possibly to 110 volts 25 cycle...Perhaps to power some 25 cycle device from only 110 Vdc mains. Or maybe I just stepped over into the twilight zone?? Allie
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