sorry i dont understand, you are naming wires with numbers instead of UVW, XYZ? thats confusing, the 7,8,9 i assume represent RST or L1L2L3 power wires, and the other 6 are the windings pairs but i cant understand what you are testing
12 leads will be Delta. It'll be necessary to find six pairs. The trick is finding which three can be the "y", and which of those to combine. same method, just more tests to find what is adjacent to what
there will only be one group of three windings connected together in a 9 wire WYE connected motor. once you find this set you can mark any wire 7,8 and 9. you will then follow along to find the other windings in the correct sets and polarity. I started with 7,8 and 9 in the original positions so I could prove I found the other sets and also in the correct polarity....
I'm not knowledgeable on the internal wiring in the motor and can't seem to find an illustration of that makes real good sense to me. :-). I don't understand why 1/2 --3/4--and 5/6 pairs can't be any two wires that show continuity. It would seem in 3 phase it would only change the direction of rotation if interchanged. I know I must be missing something. I'm trying to ID for a 220 3 phase power source
@@jaspermcconnell6417 yes. The windings need to be wired in the correct polarity. If a winding is wired in reverse polarity, the magnetic field it produces will fight against the other windings magnetic fields
When Identifying 1&4 If you are flashing the correct pair (ie 7,8,&9) then pairs 3&6, and 2&5 will have similar deflection. Only pair 1&4 will be a very small deflection. That is how you know you have 1&4. See our blog post. It has pictures of the correct order as well. I believe I placed the link in the description section. If not, here it is. www.accesstopower.com/blog/identify-unmarked-leads-in-a-9-lead-wye-connected-motor
Some company posted a video using the same method and called it Angie Hand’s identifying unmarked 9 lead Wye connected motor. One circuit with three leads and three circuits with 2 leads. I understand how 7,8 and 9 are identified, etc, but how do you know with authority the 8 is 8? I don’t see with Ny of the methods a that are used that you can do anything more than identify relationships between the different leads. No doubt this shows the relationships between the two lead circuits with the appropriate lead of the three lead circuit. If you start out like you did in this video with 7, 8 and 9 identified, then there’s no problem knowing which are 1 and 4 etc, but I fail to see how you can know which was marked 8 from the factory if 7, 8 and 9 have all lost their markings! This test doesn’t demonstrate that!
Those are the three center windings. There are six total windings in the motor. Three share a common point and the other ends of those windings are leads 7, 8, and 9. The other three winding are between 1 and 4, 2 and 5, and 3 and 6.
SeanLeonDrums yes. However you number these 3 wires will determine the groupings and polarity of the other 3 windings. See my blog post on this topic accesstopower.com/identify-unmarked-leads-in-a-9-lead-wye-connected-motor/
if you have the 3 groups of two misswired, meaning one of the group of 3 is included in the other groups, then you would have continuity on all 9. the only way to test them accurately is to unwired all 9 and test them individually. if they still have continuity you motor has problems.
I went access the document that explains the video and received message on google docs that says it has been deleted. Is there somewhere else I can access this document? Much appreciated.
When labeling 7 8 9, does that change the other pairs? If the motor leads were originally labeled as 7 8 9, and you change 7 to 8, 8 to 9, and 9 to 7, will that change which pair is 1&4, 3&6, 2&5?
callitw, Yes if you change 7, 8, and 9 then the other pairs will change as well. But they will remain in the correct order, or relationship in the wye configuration of the motor windings. In the video, I left 7, 8, and 9 the same so I could prove the pairs, once found, would be the correct pairs in the correct order.
@@AccessToPower thank you, sir. It never ceases to amaze me what you can find on YT. Any project or problem or idea, etc, you will find someone addressing it. Teaching you the theory or hands-on how-to’s. All we had as kids were books and encyclopedias or taking a class. Thanks for dedicating your time and effort to educating people in your field of expertise. May the Lord bless and keep you and your house. 🙏🏼
@@AccessToPower great video. So I am replacing a stator and I started shortening wires before relabeling them was able to deduce the positive negative ones as only cut 4 wires prior to realizing my mistake. I had 9 uncut but have 7,8 left and do not know which is which. Pump can be wired for 220 or 460. My question is what happens if I simply guess 50/50 chance of being right, but happens to the stator if I am wrong?
I have tried changing 7,8,9 around and ringing one out 3 times, but the motor still only runs at half speed, no matter which of the 3 ways I did it. Stumped.
Hi Darcy, I am not sure what you are needing to do, but if you have a Y connected motor, then 7,8,&9 should have continuity when everything is disconnected. there will be the one group of 3 (7,8,9) and 3 groups of 2. If you have a delta connected motor then this method of identifying leads will not work the same way. In a 9 lead delta connected motor you will have 3 groups of 3.
@@AccessToPower its Y wound. No matter what combo of 7,8,9 I start with (which changes your pair numbers) it runs at half speed. Fought another motor like this before, not the easiest thing to take to motor shop since it's a direct drive machine.
I am sure we can get the proper polarity and connection of the windings if we follow that. but I am not sure if once we already fixed the connection is T1. T2 and T3 will be the same. maybe T1 would be T2. T2 would be T3 and T3 would T1 because from the very begining, we are not sure if T7 is T7. may it is T8 or T9 but even the original marking will be change it will work.. based on my obvervation....
**DO NOT** run DC current through an AC motor. This results in no induction of EMF to oppose the current flow and it increases to unimaginable levels and ends up burning out the coil. Use an AC current and an O-scope to probe the motor instead. I've posted a video on how AC motors work based on my college curriculum if you want to learn more.
Man your video/blog really baled me, wiring my 440v 3 ph lathe! Thank you so much for the help!
I almost forgot my industrial motor tagging wire leads! Thanks to refresh my memories again! God bless You Always!🙏🙏🙏
I've been doing this for a really long time. This is the best video I've seen on this subject
Can this be done on the alternator of a genset ? Can we use this same method?
You sir are an excellent teacher.
Thank you!
Thank you for sharing this video.
This is a really, really good video
Very useful video thank you sir. Please upload how to identify unmarked 9 lead Delta connection motor terminal
What if I don't have a galvanometer to get right polarity??? can i use LED light for getting the right polarity???
Excellent tutorial, thank you.
Great job 👍.. did this practical for school..
sorry i dont understand, you are naming wires with numbers instead of UVW, XYZ? thats confusing, the 7,8,9 i assume represent RST or L1L2L3 power wires, and the other 6 are the windings pairs but i cant understand what you are testing
Hes using North Americian naming convention which we - Europeans - are not familar with
Unfortunately, the document link no longer works, states document has been deleted
Hi, can you do a demo also in unmarked 6 and 12 leads? Thank you.
12 leads will be Delta. It'll be necessary to find six pairs. The trick is finding which three can be the "y", and which of those to combine. same method, just more tests to find what is adjacent to what
@@mikebowler1962 we build time traveling machines and these were very basics in temporal displacements for warp generator modules
How did you find 7,8,9 wire? How did you find which is 7, which is 8 and which is 9?
there will only be one group of three windings connected together in a 9 wire WYE connected motor. once you find this set you can mark any wire 7,8 and 9. you will then follow along to find the other windings in the correct sets and polarity. I started with 7,8 and 9 in the original positions so I could prove I found the other sets and also in the correct polarity....
once you identify all of your 2 pair groups you would be able to correctly identify 7,8 and 9 by process of elimination.
I'm not knowledgeable on the internal wiring in the motor and can't seem to find an illustration of that makes real good sense to me. :-).
I don't understand why 1/2 --3/4--and 5/6 pairs can't be any two wires that show continuity. It would seem in 3 phase it would only change the direction of rotation if interchanged. I know I must be missing something. I'm trying to ID for a 220 3 phase power source
The windings have to be wired in the correct polarity as well or you will damage the motor
@@AccessToPower thanks. Is the same true for wye and delta ?
@@jaspermcconnell6417 yes. The windings need to be wired in the correct polarity. If a winding is wired in reverse polarity, the magnetic field it produces will fight against the other windings magnetic fields
Is any of these classes approved by DIR as continuing Education?
I understand how you got the group of three wires but how do you know which one is 7 which one is 8 and then 9.
You arbitrarily choose 7,8, and 9. The rest of the tutorial is how to find the other pairs in relation to these three.
Ok cuz at the end it just looked like it made a difference, I understand im just over thinking it lol
Can I do this to identify wires of a 12 lead alternator of a generator?
Can this same method be used?
This link for the document in Google Docs is not good.
Can you show how to identify a delta connected motor next
Great video tutorials🇬🇱💌
Finding 1&4 - what do yo do if you get two pairs that has similar deflections? One pair has a lot of deflection, two other pairs are about the same.
When Identifying 1&4 If you are flashing the correct pair (ie 7,8,&9) then pairs 3&6, and 2&5 will have similar deflection. Only pair 1&4 will be a very small deflection. That is how you know you have 1&4. See our blog post. It has pictures of the correct order as well. I believe I placed the link in the description section. If not, here it is. www.accesstopower.com/blog/identify-unmarked-leads-in-a-9-lead-wye-connected-motor
Is it possible with a digital voltmeter?
Hector, A multimeter will not work for sensing the magnetic field that is created.
Some company posted a video using the same method and called it Angie Hand’s identifying unmarked 9 lead Wye connected motor.
One circuit with three leads and three circuits with 2 leads.
I understand how 7,8 and 9 are identified, etc, but how do you know with authority the 8 is 8?
I don’t see with Ny of the methods a that are used that you can do anything more than identify relationships between the different leads.
No doubt this shows the relationships between the two lead circuits with the appropriate lead of the three lead circuit.
If you start out like you did in this video with 7, 8 and 9 identified, then there’s no problem knowing which are 1 and 4 etc, but I fail to see how you can know which was marked 8 from the factory if 7, 8 and 9 have all lost their markings! This test doesn’t demonstrate that!
What about the group 789 what is the use for that
Those are the three center windings. There are six total windings in the motor. Three share a common point and the other ends of those windings are leads 7, 8, and 9. The other three winding are between 1 and 4, 2 and 5, and 3 and 6.
How do you know which are 7,8,9? i know those are the inner group of three that make the y connection but how can you tell 7,8,9 apart?
SeanLeonDrums You start by arbitrarily determining which one 7,8,and 9 are. You then are able to find all the other groups in the right order.
@@AccessToPower So to be clear 7,8,9 can be labeled interchangeably?
SeanLeonDrums yes. However you number these 3 wires will determine the groupings and polarity of the other 3 windings. See my blog post on this topic accesstopower.com/identify-unmarked-leads-in-a-9-lead-wye-connected-motor/
Mine has continuity across all 9 wires. They had three groups of two already together and three wires left independent of the others.
if you have the 3 groups of two misswired, meaning one of the group of 3 is included in the other groups, then you would have continuity on all 9. the only way to test them accurately is to unwired all 9 and test them individually. if they still have continuity you motor has problems.
Hey. Uddy that document has been deleted and i cant download it
Hi . Is there a way to identify 6 leads on 3 phase motor ?
Do you know where could I find help to identify leads on a 5 wire Permanent Split Capacitor Induction Motor
that's not one I've tried... sorry.
I went access the document that explains the video and received message on google docs that says it has been deleted. Is there somewhere else I can access this document? Much appreciated.
accesstopower.com/identify-unmarked-leads-in-a-9-lead-wye-connected-motor/
Thanks can you tell how to identify 6 leads on 3 phase motor
When labeling 7 8 9, does that change the other pairs? If the motor leads were originally labeled as 7 8 9, and you change 7 to 8, 8 to 9, and 9 to 7, will that change which pair is 1&4, 3&6, 2&5?
callitw, Yes if you change 7, 8, and 9 then the other pairs will change as well. But they will remain in the correct order, or relationship in the wye configuration of the motor windings. In the video, I left 7, 8, and 9 the same so I could prove the pairs, once found, would be the correct pairs in the correct order.
@@AccessToPower what if you don’t know 7, 8 and 9? Is there a way to figure that out or do you just label them and start from there?
bri may , you label them and then start from there.
@@AccessToPower thank you, sir. It never ceases to amaze me what you can find on YT. Any project or problem or idea, etc, you will find someone addressing it. Teaching you the theory or hands-on how-to’s. All we had as kids were books and encyclopedias or taking a class. Thanks for dedicating your time and effort to educating people in your field of expertise. May the Lord bless and keep you and your house. 🙏🏼
@@AccessToPower great video. So I am replacing a stator and I started shortening wires before relabeling them was able to deduce the positive negative ones as only cut 4 wires prior to realizing my mistake. I had 9 uncut but have 7,8 left and do not know which is which. Pump can be wired for 220 or 460. My question is what happens if I simply guess 50/50 chance of being right, but happens to the stator if I am wrong?
How about 12 leads untagged
How do you know its WYE?
topgeneral2002 if you have 3 sets of two and 1 set of three that have continuity then it’s a wye.
I have tried changing 7,8,9 around and ringing one out 3 times, but the motor still only runs at half speed, no matter which of the 3 ways I did it. Stumped.
Hi Darcy, I am not sure what you are needing to do, but if you have a Y connected motor, then 7,8,&9 should have continuity when everything is disconnected. there will be the one group of 3 (7,8,9) and 3 groups of 2. If you have a delta connected motor then this method of identifying leads will not work the same way. In a 9 lead delta connected motor you will have 3 groups of 3.
@@AccessToPower its Y wound. No matter what combo of 7,8,9 I start with (which changes your pair numbers) it runs at half speed. Fought another motor like this before, not the easiest thing to take to motor shop since it's a direct drive machine.
Darcy, are you using a galvanometer to find the polarity of the other three windings?
@@AccessToPower I am ringing them with a 6V battery and my analog meter
I am sure we can get the proper polarity and connection of the windings if we follow that. but I am not sure if once we already fixed the connection is T1. T2 and T3 will be the same. maybe T1 would be T2. T2 would be T3 and T3 would T1 because from the very begining, we are not sure if T7 is T7. may it is T8 or T9 but even the original marking will be change it will work.. based on my obvervation....
**DO NOT** run DC current through an AC motor. This results in no induction of EMF to oppose the current flow and it increases to unimaginable levels and ends up burning out the coil. Use an AC current and an O-scope to probe the motor instead. I've posted a video on how AC motors work based on my college curriculum if you want to learn more.