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You can't. A three-phase motor works on a completely different principle from a d.c. motor (e.g. there's no electrical connection to the rotor). As well as this, with a d.c. supply, you will only be able to connect one phase of the field windings, and the resistance of that field winding will be low compared with its reactance, and may well burn out if you connected it to a d.c. supply.

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Q: How do you convert 220 3phase ac to 125 vlt dc power or can you run dc motor on ac power just to test it for a minute or to without damaging the motor?
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