3.2kv

[kattos]

started a new conversion the motor is 3.2kv 220volts 1450rpm 3phase is this a 4 pole motor?

[kattos]

[SparWeb]

Yes, it is a 4-pole motor.  Can you tell us any more?  It has potential as a conversion.

[tecker]

That's a big motor . A compressor motor so checkit to make sure it's not burned up . You have a wye delta connections to work with so that gives you 6 taps I'd guess . One tell about the magnet skew is the angle of the squeril cage in the rotor . Happy motoring.

[tecker]

opps squirel cage

[TomW]

Not to crack wise but we have what seems like hundreds of squirrels on the farm so those squirrel cages might be handy here if they aren't needed in those motors.

;=]

Couldn't resist.

Tom

[tecker]

I have a really large oak tree over my deck and this year the acorns are really large I 've spent a lot of time out there lately and the squirels take turns camping out just over my head dropping stuff on my head . So here's the picture the squirels are in the tree dropping stuff  and the cat's are sitting on the roof waiting for either the squirels to make a mistake or me to cut off a finger .

[Bruce S]

can't resist,

Squirrel, medium heat until evenly cooked + flour+ milk= Yummy breakfast ;-)

Cats will help clean up.

Bruce S

[kattos]

[SparWeb]

The wire looks okay, the bearing looks old.  At least replace the bearings - should be a common part & easy to find.  Test the windings - the resistances should be pretty close.  Some multimeters measuring ohms will have trouble settling on a value of resistance when connected across the phases of a motor.  There is inductance in the wire coils, which causes feedback.  Let the Ohm measurement settle out for a minute if that happens to you.  Expect resistance somewhere in the range of 5 Ohms, when connected in Star.  Measurements that differ greatly indicate broken or shorted wires.

What to do with the wiring in the stator: you can leave it as-is, or you can cut it out and put in wire that better suits your needs.  What will you do with the conversion, when it is a generator?  Windmill / water turbine / excercise bike?  Choose voltage of the battery system that it will charge, or maybe you want to heat water directly, in which case voltage should be very high?

Until you have placed the magnets on the rotor, and re-assembled the motor conversion, it is hard to predict the output performance / voltage / current.  Those with more experience will know what to expect, but you and I aren't that good, yet.

[tecker]

I'd say the bearings are toast .Most certainly not compatable with neos .The wire looks like 18 or a little smaller . If the Phases match your good to go .

[wpowokal]

The motor is 3.1Kw not Kv, your subject says you have a 3200 volt motor, picky I know but you may as well learn the difference.

allan

[tecker]

 Once your turned down and you want to check your alignment superglue the mags in place and wrap with filiment tape the tape will keep the mags really well for a test . Test done and your satisfied tape off dip the rotor in acetone and  mark the place ment draw the centers on cad print it and tape it on the sleeve . You can rest the mags possibly a few times for max amps and no cog . A spin test is always fun but if it's layed out right and you can spin it free and then short it and lockit down.

[FishbonzWV]

Kattos,

I just finished a 1hp conversion with windings like yours.

The way these motors with just 6 coils are wound, is one outside coil is tied in series to the inside coil next to it.

There should be 6 wires in the connection box, if not, then there will be a star point inside. Break the star point and add three leads out to the connection box.

Ohm the leads out and you will find the pairs of coils.

Rectify each pair of leads and parallel the rectifiers outputs. This will keep the voltage lower and amps up.

On the motor I did, the outside coils had more turns than the inside coils, but since they were connected one outside to one inside the pairs all ohmed out the same.

Your mag span should be one slot shorter than the coil center and this should give you enough room for the 4 poles of mags with clearance of the coil legs.

Your mag skew will be at a different angle than the rotor skew but stay in the same direction as this aids the flux path.

Happy motoring   : )

Bonz

[kattos]