how do you check a motor

[cob]

dont know if this is the right place to post this question.
i have this lathe but dont know if the motor is good how do you guys go about checking to see if the motor is any good.
thanks

[Al_The_Man]

What kind of motor? 1 phase? 3 phase? DC?
If just a regular 1 phase induction motor, power it up and see what happens?
What makes you think it needs checking?
Al.

[cob]

its a 3 phaze motor
I dont know much on motors I just opened the spice box and there were all these leads coming out so I was woulder when you put a meter how do you check it. this is a lathe

[Al_The_Man]

How many leads and are they marked in any way.
What does the name plate say? 220/440 dual voltage?
Al.

[cob]

Originally Posted by Al_The_Man How many leads and are they marked in any way. What does the name plate say? 220/440 dual voltage? Al.

thanks for the reply and sorry for not replying and earlier.
so this is what I gather from the motor name plate

HP: 7.5 RPM: 1725

VOLTS: 230/460 AMPS :22/15

PH: 3 HZ:60


also I open the motor splice box and it has 9 wires.
the way the are connected goes like this
4and7
5and8
6and9
1is by itself
2is by itself
3is by itself.

my question is still can I plug this in my home garage and how can I do it.
thanks for all the help.

[Al_The_Man]

It looks like it is a dual voltage star connection in both speeds.
You cannot check it on a regular domestic 1 phase supply, unless a phase converter or a variable frequency drive is used.
Al.

[cob]

thanks for the info really appreciated.
I am not quiet sure on what you mean but bassicaly what your saying is I need a phase converter and a variable frequency drive to check it.
please bare with me I am not a electrician I just want to know what I need so when I do call a electrician he does not try to bulls_ _ t me around.
any ways thanks for the help if you have any more suddjestion please let me .
all I really whant to do is put the machine in the garage and put a variable frequency drive and make it run.
thanks

[Al_The_Man]

Originally Posted by cob is I need a phase converter and a variable frequency drive to check it.

One or the other, both the phase convertor or the VFD will produce 3 phase from 1 phase.
With VFD you get variable speed.
Al.

[cob]

I would prefer a VFD know that you know my motor nameplate
I am going to get a VFD.
can you give some pointers on what kind I should buy also where ,
I have thought about EBAY.
but I dont know what I should look for.
thanks again

[Al_The_Man]

That is a fairly large motor for 1 phase input, look for around a 10hp that will accept 1 phase at 220/240 input.
Some here have bought the Toshiba or Fuji.
I have picked up Mitsubishi, WEG, or Telemecanique off ebay.
If getting second hand, make sure it has the program pad otherwise you would have to purchase separately.
Al.

[cob]

thank you AL
for all the info really appreciated