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Old 17th Oct 2020, 8:36 pm   #21
Trigon.
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Default Re: Wiring a 110V two-phase motor?

I would think it's very likely a 'permanent split-capacitor motor':-

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I believe the '2 phase' label is to suggest it's a 'symmetrical' type, most suited for reversing applications.

Conect the two windings and the capacitor in a 'triangle' and apply 110v between the junction of the windings and either end of the capacitor. This allows simple reversing with a single pole switch.

Cheers
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Old 17th Oct 2020, 9:12 pm   #22
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Default Re: Wiring a 110V two-phase motor?

Quote:
Originally Posted by Trigon. View Post
I would think it's very likely a 'permanent split-capacitor motor':-

Attachment 218171
Yes, that's also how I'd suggest wiring it to try it out.

Chris
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Old 17th Oct 2020, 9:56 pm   #23
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Default Re: Wiring a 110V two-phase motor?

Klaxon still exists and is owned by Texecom. They can be found at:

St. Crispin Way
Haslingden
Lancashire
BB4 4PW
UK

Tel: 01706 234800
Email: sales@klaxonsignals.com

Perhaps they may be able to advise on this??
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Old 17th Oct 2020, 11:04 pm   #24
broadgage
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Default Re: Wiring a 110V two-phase motor?

Quote:
Originally Posted by Trigon. View Post
I would think it's very likely a 'permanent split-capacitor motor':-

Attachment 218171

I believe the '2 phase' label is to suggest it's a 'symmetrical' type, most suited for reversing applications.

Conect the two windings and the capacitor in a 'triangle' and apply 110v between the junction of the windings and either end of the capacitor. This allows simple reversing with a single pole switch.

Cheers

Possibly, but not in view that likely.
Split winding motors usually only have three connections, one end of each winding, with the other ends of the windings connected together internally.
Also such motors are not normally identified as 2 phase.
Capacitor start and capacitor run motors usually have the value of the required capacitor marked on the nameplate.
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Old 18th Oct 2020, 11:08 am   #25
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Default Re: Wiring a 110V two-phase motor?

Quote:
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.
Chris
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.
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Old 19th Oct 2020, 11:58 pm   #26
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Default Re: Wiring a 110V two-phase motor?

Quote:
Originally Posted by broadgage View Post
Possibly, but not in view that likely.
Split winding motors usually only have three connections, one end of each winding, with the other ends of the windings connected together internally.
Also such motors are not normally identified as 2 phase.
Capacitor start and capacitor run motors usually have the value of the required capacitor marked on the nameplate.
I was certainly of the impression that a motor labelled as being "two-phase" was simply that, intended to operate from a two-phase supply. And that the various forms of single-phase induction motors, split-phase, capacitor start, capacitor start and run, etc., were labelled as being "single-phase".

The attached chart, although just a single example, does tend to confirm that impression.


Cheers,
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File Type: pdf Brook Gryphon Connection Diagrams.pdf (385.0 KB, 23 views)
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Old Today, 10:02 am   #27
Brigham
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Default Re: Wiring a 110V two-phase motor?

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Originally Posted by Dave Moll View Post
Yes, that's not a bad simile. Bicycle pedals at 120 apart would be difficult to use.
I can't see why.
It works fine on pedal cars!
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