- Thread starter 6ply
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Tested ok. Very oily inside plus lots of swarf. Someone was overly generous with the lube!
Smouser
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- Amesbury, Wiltshire, UK
My donkey saw had a hoover motor which I had to dig the starpoint out.
Let me see if I can find the post or the photo.
*Edit*
Here is the post:
Post in thread 'Rewiring a 3 phase motor to Delta'
Not sure if it will be of much help though.
Let me see if I can find the post or the photo.
*Edit*
Here is the post:
Post in thread 'Rewiring a 3 phase motor to Delta'
Ok. After staring at the motor for a while, I THINK I have found the Star point.
It is at the 'top' of the motor. Opposite side to where the wires are which goes to the connection plate.
Can somebody please confirm there is only one place in a motor where three wires meet?
What do you think of the photo?
It is at the 'top' of the motor. Opposite side to where the wires are which goes to the connection plate.
Can somebody please confirm there is only one place in a motor where three wires meet?
What do you think of the photo?
Not sure if it will be of much help though.
Smouser
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- Amesbury, Wiltshire, UK
I think that Hoover motor I rewired was actually my first. I have since gotten a bit better with the process.
This was my latest motor: https://www.mig-welding.co.uk/forum/threads/wiring-5-5kw-motor-to-delta-help.143814/
This was my latest motor: https://www.mig-welding.co.uk/forum/threads/wiring-5-5kw-motor-to-delta-help.143814/
Erie Fred
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Why did Hoover make a 1/4 hp motor to run on 415v 3 phase ?
Seems a might bit overkill, but maybe this motor was used in shops that only had 415v 3 p ?
I'll have another look tomorrow. I've dug out star points before but it's been a while and I don't remember which end I've found them. Thanks.My donkey saw had a hoover motor which I had to dig the starpoint out.
Let me see if I can find the post or the photo.
*Edit*
Here is the post:
Post in thread 'Rewiring a 3 phase motor to Delta'
Ok. After staring at the motor for a while, I THINK I have found the Star point.
It is at the 'top' of the motor. Opposite side to where the wires are which goes to the connection plate.
Can somebody please confirm there is only one place in a motor where three wires meet?
What do you think of the photo?
Not sure if it will be of much help though.
finyuk2005
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- 911
is this for the purpose of re-wiring to delta so you can run lower voltage?
I would love to do this with my lathe so it would work better of the VFD, currently using the trick with a lower frequency, it works ok, but if i want to get anywhere fast i have to fire up the 3 phase genny and give it 415v!
I would love to do this with my lathe so it would work better of the VFD, currently using the trick with a lower frequency, it works ok, but if i want to get anywhere fast i have to fire up the 3 phase genny and give it 415v!
Smouser
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- Amesbury, Wiltshire, UK
You could try to dig the starpoint out so you can run it on DELTA lower voltage, or you can just buy a VFD that takes 220V single-phase and converts it to 380V three-phase for the quickest, easiest solution.
Some really cheap options at Aliexpress.
Example: https://www.mig-welding.co.uk/forum/threads/cheap-5-5kw-vfd-220v-to-380v.148608/
finyuk2005
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- 911
oh man, i thought the higher voltage vfd's were way more expensive than that, thats not too deadly!
Almost. Yes, I was planning to rewire to delta and then add a capacitor so the motor could be run directly from a single phase supply. This is a low power motor that won't see much use so I didn't want to purchase a vfd.
Yes, I have a couple of 220v in 380v out inverters. Definitely useful but not my preferred solution in this application.
Even the cheap ones are quite good.
finyuk2005
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- 911
Ive bought one off aliexpress for 66 quid, not much more than I have paid for a 220v ones from amazon before,
will be interesting to see if it runs the old lathe any better!
will be interesting to see if it runs the old lathe any better!
