- Joined
- Dec 6, 2012
- Messages
- 2,677
When my Van Norman 6 arrived several years ago she had a 1725rpm, 1phase motor.
That wasn't right for all kinds of reasons.
I was gifted a tired 3/4hp, 1140 rpm, 203 frame motor. That worked for a while but was getting hot and smokey.
As this is a "no smoking" shop, I began the search for the correct motor.
Scored an OEM 1140rpm, 1hp, 204frame motor. Freight cost more than the motor. Yep, looks the same as the ones in the VN parts manual and brochures. However, there were no guarantees about condition other than the shaft spun freely.
When she arrived I was suspicious when she only had three wires coming out. But seemed to work well.
Then I noticed I was having significant power problems at higher speeds.
One of our local HM members is adept at 3phase he visited this past Thursday.
He opened my 20hp RPC, and ran some clamp meter tests and pronounced as healthy. As well as my home wiring job as adequately safe (not necessarily code).
When he opened up the motor, he identified that like the bearings the windings appeared new.
However, when she was rewired she was wound as 440v only.
My options.:
1) use at low speeds only.
2) rewind the motor.
3) find someone who is willing & able to possibly identify, cut, tap in additional wires to make her convertible to 220v (this may not be a real option).
4) find a 220v-440v 3ph minimum 2kva transformer.
Am trying to logically work through the options.
If any of you electrical gurus has an appropriate transformer which you are tripping over, then I'd rather purchase from you, than off eBay/other. I'm willing to pay fair market value.
Starting next week I'll check the local used motor shops to learn if they've got a used one on the shelf.
Thank you!!
Daryl
MN
That wasn't right for all kinds of reasons.
I was gifted a tired 3/4hp, 1140 rpm, 203 frame motor. That worked for a while but was getting hot and smokey.
As this is a "no smoking" shop, I began the search for the correct motor.
Scored an OEM 1140rpm, 1hp, 204frame motor. Freight cost more than the motor. Yep, looks the same as the ones in the VN parts manual and brochures. However, there were no guarantees about condition other than the shaft spun freely.
When she arrived I was suspicious when she only had three wires coming out. But seemed to work well.
Then I noticed I was having significant power problems at higher speeds.
One of our local HM members is adept at 3phase he visited this past Thursday.
He opened my 20hp RPC, and ran some clamp meter tests and pronounced as healthy. As well as my home wiring job as adequately safe (not necessarily code).
When he opened up the motor, he identified that like the bearings the windings appeared new.
However, when she was rewired she was wound as 440v only.
My options.:
1) use at low speeds only.
2) rewind the motor.
3) find someone who is willing & able to possibly identify, cut, tap in additional wires to make her convertible to 220v (this may not be a real option).
4) find a 220v-440v 3ph minimum 2kva transformer.
Am trying to logically work through the options.
If any of you electrical gurus has an appropriate transformer which you are tripping over, then I'd rather purchase from you, than off eBay/other. I'm willing to pay fair market value.
Starting next week I'll check the local used motor shops to learn if they've got a used one on the shelf.
Thank you!!
Daryl
MN