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Old 18th Oct 2020, 10:08 am   #25
Glowing Bits!
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Join Date: Oct 2011
Location: Wrexham, North Wales, UK.
Posts: 966
Default Re: Wiring a 110V two-phase motor?

Originally Posted by cmjones01 View Post
Since it's "Klaxon" branded and rotates at 100rpm, I wonder if it was intended to operate the shutters on a pulsed 'nee-naw' type siren? If so, it may have been powered from two of the three phases feeding the blower motor, maybe via a transformer or even taps on the blower's windings. For such a light duty, the extra cost of a winding for the third phase probably wasn't justified.
If you look up Broadmoor sirens, they are Klaxon CS8, the shutters are solenoid driven with spring return.
Having them motor driven would result in the shutters struggling to operate whilst the air is forcing itself against it in the closed position.
Rick, the annoying object roaming the forum.
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