Best thing to do that I have found is to test the current through each coil, let the current run through each coil at the rated voltage whilst monitoring, then you will find out if any insulation/enamel burnout/burnthrough has occurred. This was shown to me by a more experienced person than myself, a man of the age of 67 (great teacher). I will always remember him for this very important point; When I did this resistance test, he asked me what I was doing (in a nice way), I explained, he then taught me that you CAN'T test an insulated winding with a low voltage meter. The voltage a meter produces will never jump the gap in a higher voltage winding, you MUST use the voltage the winding is rated for to test it. I hope he doesn't read this but I after a few years of working with motor windings, it has now turned out, that he is correct.
@irishguy2000072 жыл бұрын
On a starter motor, could one connect battery directly through field windings to check if a magnetic field is developed or would it draw too much power?
@Tankaroonies Жыл бұрын
?@@tttttttt8482
@Tankaroonies Жыл бұрын
Measure current as you increase the voltage, also remember that the shaft and chassis must be low resistance through bearings on the wee squirrel...@@tttttttt8482
@luckynoob3328 Жыл бұрын
I think it should be ok since it's just a continuity test
@Tankaroonies Жыл бұрын
multimeter on current setting.@@tttttttt8482
@behicbagaralioglu82932 жыл бұрын
Most of the other videos start from the invention of motors and talk none sense rubbish this video hits the spot 👏 well done mate 👏
@TheLabOtomy2 жыл бұрын
Thanks Behic
@jotcw814 жыл бұрын
OMG not only did this answer all my questions, but you used even the exact same multimeter and cleared all that up too :)))
@TheLabOtomy4 жыл бұрын
We are on the same line Jaganath... not sure if that sounds like good news for you...
@siegfredvisitacion7364 жыл бұрын
Hello can you make a detailed video on how to rewind ac/dc motor e.g. from burnt motor to a running motor
@retrorock32612 жыл бұрын
Awesome tutorial...Saved Big Bucks on my 35 year old Sanborn air compressor with a Century motor... Unloader on Pressure Switch was sticking and caused motor to overheat kicking out thermal. After cleaning the points on the start switch also ran your test on the windings to confirm the over heating had not damaged them. Windings were discolored in areas but all confirmed ok, and although I suspect the life expectancy of the motor will be diminished due to the overheating, with my occasional home garage use, it should provide air for years to come. Thanks!
@TheLabOtomy2 жыл бұрын
Nice! Thanks for sharing
@colinevans71342 жыл бұрын
Best video I've seen on this
@TheLabOtomy2 жыл бұрын
Thanks Colin, appreciated
@SARSteam4 жыл бұрын
Simplistic video, to the point and absolutely awesome !! Thank you !!
@TheLabOtomy4 жыл бұрын
Welcome
@somapalakarunanamage3796 Жыл бұрын
i m completely new to this field but trying to understand. how do you decide in the gauge of copper wire znd number of turns. can u hand wind it?
@TheLabOtomy Жыл бұрын
Number of turns but also winding patterns will determine the electromagnetic force applied. This is a complete field of study of electrical engineering, so leave that to the specialist (same for rewinding, specialized shop can do it ensuring motor performances remain optimal)
@somapalakarunanamage3796 Жыл бұрын
thanks
@mohalmisri12302 жыл бұрын
Very nice,I have a question,small toy motors I don't see those 4 in and out wires for the coil,only the rotating axe rotor
@TheLabOtomy2 жыл бұрын
There are dozens of different motor design, this video focuses on one of the most common types found in many DIY / household equipment. Steppers motors, induction motors, etc look completely different in their design. Only 2 wires could indicate use of a permanent magnet in place of a coil and yet another type: PMDC motors
@mohalmisri12302 жыл бұрын
@@TheLabOtomy nice so two wires will do for the test ,one for in current and the other for the out current
@TheLabOtomy2 жыл бұрын
@@mohalmisri1230 Correct
@tttttttt84823 жыл бұрын
Can this test be made using just an electric lamp like 100 w ?
@biscayforex43177 ай бұрын
Best video I have found on this
@TheLabOtomy7 ай бұрын
Great taste!
@josephquidlat50722 жыл бұрын
Good day! My Friend ,what is the main Reason you Set in 20O Ohms rathers than higher 2,000 Ohms? The stator you test it is 110V or 220V? Thanks for your Response .
@adnanoguz7176 Жыл бұрын
Sehr schön, çok detaylı ve açık bir anlatımdı teşekkerler.❤
@TheLabOtomy Жыл бұрын
Beğenmene sevindim
@kanegeorge55814 жыл бұрын
I’m trying to figure out what is wrong with the brush gear motor on my vacuum cleaner because it won’t spin. I took out the motor which is connected to the PCB board with a white and black wire. My resistance measures at at 9.6 and the continuity test passed. Do you think that the issue may be with the controller board for the motor?
@vanhetgoor3 жыл бұрын
With an ordinary multi-meter you can measure the resistance but not the capacity or the reactance. Neither a condensator can be measured for its capacity, nor an electric coil can be measured for its capability to produce an magnetic field. A multi-meter can only measure the conductance of wire. If half the coil has a short circuit, then you still can measure some continuity, but there will be hardy a useful magnetic filed. The result is going to be that the vacuum cleaner is not functioning as he should. The motor is running and making sound. It is like watching "The Voice of < fill in the name of your country >" Alotta noise, but nothing useful.
@user001sg96 ай бұрын
Very informative video, thanks. I am not sure what exactly is meant by "input" and "output* pairs of field coils. A coil has a beginning and an end terminal. What would here be the "input terminals" and what would the "output terminals" of one single field coil? Could you kindly explain, please? Thanks a lot in advance.
@TheLabOtomy6 ай бұрын
Hey user001sg9, good catch, looking at the video today (it was 6 years ago), I'm not sure why I called it input / output terminals knowing it is running on alternative current. In any cases, the test is just about testing from one end of the coil to the other end to make sure there is continuity and confirming there is a balanced circuit resistance between coils.
@colinevans71342 жыл бұрын
Brilliant video, the best one I've seen, you showed and explained in all test results 👍👏💓
@TheLabOtomy2 жыл бұрын
👏
@156dave6 жыл бұрын
I would use high resistance meter setting (20Mohm range) to check fields to lamination breakdown
@lvd20014 жыл бұрын
My motor has 3 wire come out (starting and running cap electric motor single phase) - white, black and blue ? Not Red and Blus - like yours... So which pair of wires do I measure?
@vanhetgoor3 жыл бұрын
The colours may vary. Every manufacturer can use the wire he likes or what is available. I have a motor with two black wires and no condensator for starting or running, only one for the reduction radio disturbance. Think for yourself what the use of the wire is and then measure accordingly. In the future all wires will be black, because only black wires matter.
@vextrek60363 жыл бұрын
Excellent video. Thank you.
@unobianconero57514 жыл бұрын
if the hi rpm of motor is working but low rpm have sparkle in starting, can we use just high rpm only or it should be replaced with all new winding? can we replace just low rpm winding? what is the name of those small parts like arcs? are they coils? I don't know if they are burnt or what, because the motor is too old and one of those I said got black (like dirt oils or something) but when we scratch it it's like copper underneath, so is it bad? or just needs to clean up?
@wolnyizrownowazony46055 жыл бұрын
Siema, mam makita gr 2470 , która z dnia na poluzowała się śruba od stojana przez co styk się przypalił ale mimo wyczyszczenia nadal nie dział. Pytanie bo pomierzyłem jak Ty wirnik i wartości przy 180 ° to 1.0 gdzieniegdzie 1.1, obok siebie na komutatorze 4.6 z obudową 0.0 a stojan w 3.8 , 3.7 a z obudową 0. Powiedz mi czy takie wartości są ok??
@bilgaissa58313 жыл бұрын
I have small av motor with 5 wires and between 3 of them i see 1 (no continuity ) is that means motor is defective
@cosmicallyderived9 ай бұрын
Just what I needed
@TheLabOtomy9 ай бұрын
Nice!
@Ernie616J4 жыл бұрын
When test field coils, should both coils be connected together? When I check ohms, it does not matter which leads I test, it seems the coild are connected together. Testing a Bosch 4000 table saw motor.
@gabrielquezadagallegos82664 жыл бұрын
Cuales cables van a la red de alumbrado? Ahí aparecen 4
@ΧρήστοςΚαλαφάτης-ε8ε2 жыл бұрын
Very good video friend. I have external running coils: 1 entrance, 3 pairs connected exit-exit, entrance-entrance, exit-exit and 1 entrance as terminal. The same with starting internal coils. I use 0.42mm (27 AWG) copper wire with 90 turns for each coil and resistance 3 Ohms = 12 Ohms from entrance to terminal. Is 27 AWG of copper wire correct for Ampere? Thanks
@luisricardolimachicalderon10713 жыл бұрын
good edition of video man, coil rotating is amazing
@k.pathirana.88683 ай бұрын
🙏 Explaining is Very clear. My congratulations. 👍
@TheLabOtomy3 ай бұрын
Thanks my friend
@adrianmoroianu91186 жыл бұрын
Hi.....in an one phase motor the coils have to have the same measurements?
@jamesandonian78295 жыл бұрын
Each phase should have identical resistance so yes
@tomk37325 жыл бұрын
Yes except start coil.
@joekotze27814 жыл бұрын
Good day. Thanks for the great vid. In my case one of the coil wires indicates continuity to my stack. How do i fix it ? Please help
@jaileal88064 жыл бұрын
You have a short circuit. If you have time and expertise you could consider trying to repair it but it can be fairly challenging. Depending on the size of your motor and replacement costs it may be better to have it replaced
@ademline20103 жыл бұрын
Hello there. I had one drill, its stator was burnt out. I cut the coils on the pillow stator with a side cutter, I counted 250 turns. I rewound with the same diameter coil, but the stator gets very hot while the machine is running. Where did I go wrong? By the way, I did not apply varnish with the bobbin. I would be glad if you help. Each winding of the stator is 9 ohms.
@Tankaroonies3 жыл бұрын
Good luck with that mate and coodos for trying; a 3 phase motor is wound accurately by machines and wound by people in the old days, you can try and match the other original windings but they will NEVER match; but if you repair one of the windings yourself, the magnetic flux induced in by the action of the motor will be different, the differences in the magnetic field will induce a different current on the stator winding you wound, maybe drawing more current from the winding you made, can be less to depending on the manual winding..
@olo12994 жыл бұрын
Poza przebicie do karkasa zwarcia między sąsiednim zwojami nie sprawdzisz takim miernikiem. Bardzo uszkodzone stojan jak najbardziej przetestuję ale trafiają się nieraz takie gdzie zwarcie jest miedzy sąsiednim zwojami. Na takim mierniku tego nie zobaczysz a po podłączeniu do prądu ewidentnie widać jak jedna ze szczotek nieznacznie bardziej iskrzy. Niezbędny do tego jest miernik niskich rezystancji. W 90procentach uszkodzenie stojana da się sprawdzic amperomierzami potrzebujemy 2 i do każdej z cewek podłączamy po jednym. Od razu widać na której cewce co siedzieje. Najlepsze do tego celu są zwykle wskazowkowe. Robię masę takiego sprzętu dziennie i wiem jedno. Proste sposoby są najlepsze. A Gdy zrobi się już tego trochę to wsumie na oko widać o gdzie jest awaria
@tttttttt8482 Жыл бұрын
Привет. Какой недорогой тестер низкого сопротивления порекомендуешь ? , Подойдёт ли мультиметр ? Расскажи детальнее как проверить статор на межвитковое замыкание
@markbruvelaitis9573 жыл бұрын
My conclusion: that jam tested A-ok. Also, very informative. Thx
@aportandolealplaneta89703 жыл бұрын
thank you teacher for your infinite wisdom blessings
@Loukham6 жыл бұрын
I have one has black colour what has do it?
@otepquidlat7702 жыл бұрын
My Friend Good day! My Lowest Setting Of my Multitester is 600-Ohms it's Ok & It can Measure Accurately ? Please help Thanks & More power .
@TheLabOtomy2 жыл бұрын
Give it a try and check if you can spot any variations
@otepquidlat7702 жыл бұрын
@@TheLabOtomy ,Thanks for the Advice.
@AmatorElektronik4 жыл бұрын
A gdyby zwarły się 2 zwoje ? 2,8 ohma i np 2,78 ohma ? Ta metoda nie wykryje zwarcia międzyzwojowego.
@herbertnkusangombe18156 жыл бұрын
hie my motor reads 2.4 on the 2 coils and 3.0 on the one, its a 3phase, can i still use it and there is no earth lik
@mustafaadan50122 жыл бұрын
Thanks that's amazing video channel I like it Nice I dea
@izzzzzz6 Жыл бұрын
is 0.3 ohms per side too low?
@TheLabOtomy Жыл бұрын
There is no standard value, it all depends on the motor specs, wire gauge, number of turns, etc only the motor specs datasheet (if it is available) can confirm this
@enriquehuryk24803 жыл бұрын
Por qué las etiquetas en inglés? es incómodo entender rápido los pasos, hay que saber de antemano los pasos de lo que se mide.
@enatotvАй бұрын
Please what if you read the resistance but it doesn't read
@TheLabOtomyАй бұрын
Not sure I understand the question
@DavidTorres-kl2rt3 жыл бұрын
nice video
@Александр-я6л6э5 жыл бұрын
What happens if you confuse the polarity of one of the stator windings? Что произойдет, если перепутать полярность одной из обмоток статора?
@TheLabOtomy5 жыл бұрын
We measure resistance, and the stator winding is just 1 long piece of wire so does not mind polarity for that test...
@Александр-я6л6э5 жыл бұрын
@@TheLabOtomy I mean, if you apply alternating voltage to the engine.
@sarvjeetsharma36207 жыл бұрын
VERY HELPFUL
@TheLabOtomy6 жыл бұрын
Thanks for the feedback
@zeberia10005 жыл бұрын
I like this video because its Short and simple !!!!!
@TheLabOtomy5 жыл бұрын
Thanks! (also keeping my reply short and simple)
@marcelsimon64253 жыл бұрын
Isolation is measured at the highest possible resistance range AND at least at motorvoltage
@engineert.r.t19834 жыл бұрын
Nice video
@TheLabOtomy3 жыл бұрын
Thanks
@pawemik79754 жыл бұрын
Dziękuję bardzo, film mi pomógł!!!
@kousthubasheshappa89834 жыл бұрын
Congrats for illuminating explanation. Accordingly,Please clarify the following about motor winding of mixer grinder: 1.If resistance value between neutral wire and motor windings:speed1.2.3 *showing infinity/ OL(1)* (N-Sp1,N-Spd2, N-Spd3) Then,What is the reason for infinity value/1??,when measured between N-Sp1,N-Spd2, N-Spd3. 2.But, Motor winding resistance values between Sp1 & spd2 winding : 5 ohms , between spd2 to spd3: 1.8 ohms between spd1 to spd3: 0.8 ohms 3. Resistance between Motor windings & motor body is infinity/1 # So Please guide us how to troubleshoot the problem *as mixer grinder NOT running at present* Note: Power supply continuity signal is OK/ Normal,from socket up to Rotary switch.
@michaelvargo79396 жыл бұрын
great video! thanks for sharing!
@TheLabOtomy6 жыл бұрын
Thanks for the support
@Utking33 жыл бұрын
Love the music :)
@hapetaa6 жыл бұрын
how to find broken winding wire end on stator?
@robertmorin6495 Жыл бұрын
Difficult to do because the windings have fine insulation on the wire. You would have to unwrap or unfurl the whole winding to a straight line piece, scratch the insulation off the wire with a razor blade, test with an ohm meter every foot or so and if not found repeat the scratch and ohm meter test again and again until found.
@juanabreu51276 жыл бұрын
If one turn of a coil is shorted, test 1 will not show it and the stator won't work. A third test must be carried out to detect that kind of failure.
@TheLabOtomy6 жыл бұрын
Hm... will need to check about that, thanks for the feedback
@asanterichard94986 жыл бұрын
Very helpful, good job.
@TheLabOtomy6 жыл бұрын
Gracias
@asanterichard94986 жыл бұрын
The LabOtomy Also I would like to know more about rewinding of motor can you please give me a link or ideas
@rocktruckrob7 жыл бұрын
Good to know...thanks for sharing....cheers be safe be kind
@TheLabOtomy7 жыл бұрын
Will try ;)
@mickeyyoung84426 жыл бұрын
rocktruckrob me
@chocholatemilkshake47993 жыл бұрын
0:15 you got my subscribe mate
@ЮрийЮрий-ж3з4 жыл бұрын
Спасибо за информацию
@antonbende82108 ай бұрын
No BS... ! good ! thx.
@TheLabOtomy8 ай бұрын
Good comment, to the point, thx!
@omaradan80626 жыл бұрын
Thanks Nice Idea
@TheLabOtomy6 жыл бұрын
Welcome
@japs73126 жыл бұрын
Superb video, straight to the point and easy to understand. It help me very much :)
@TheLabOtomy6 жыл бұрын
Thanks for the feedback
@mathematiquesinformatique14232 жыл бұрын
merci
@juanmarcelovaldiviezo34675 жыл бұрын
El anuncio esta en español Pero todo el video en ingles .parece muy interesante pero no pude entender nada 🤨
@mipani4 жыл бұрын
Para mí el anuncio está en alemán (soy alemán). Los traducciones de anuncios probablemente ocurren automáticamente. Veo eso a menudo.
@hvacae69045 жыл бұрын
How you will know if the coil is grounded if the ohmeter setting is on lowest it will still show open even if its grounded it depends on individual to decide
@sarvjeetsharma36207 жыл бұрын
THANK YOU
@TheLabOtomy6 жыл бұрын
Happy it helped
@northwinds91556 жыл бұрын
check if shorted... instead of continuity though you are expecting the reading to be 1 not 0
@omelectric96705 жыл бұрын
Thanks
@TheLabOtomy5 жыл бұрын
Welcome
@randykarelly72306 жыл бұрын
Great and so helpful to knowledge..
@eugenenault4935 Жыл бұрын
Is this a music or a educational video?
@TheLabOtomy Жыл бұрын
It's a DIY concert
@جمالالعبد-ف4ج5 жыл бұрын
جيد شكرا
@amokranetacine38062 жыл бұрын
Magnifique
@Shogunlanun4 жыл бұрын
Nice content..done sub
@ctjohndeere2 жыл бұрын
SHOP VAC. motor 6 months old. multimeter tested armature, field coil, brushes good. motor inop. What's up with this?
Se entiende que si se explica cómo reparar un aparato malo es para todo público. Todos no sabemos y queremos aprender .Por lo tanto den mayor informe. Con más detalles
@shreifsalah52235 жыл бұрын
lovely music this time . I will enjoy the music and care about the information later
@TheLabOtomy5 жыл бұрын
Works for me! Thanks for the feedback
@jalalalaee95809 ай бұрын
I didn’t get it,
@coronacofit91313 жыл бұрын
Good good
@osmarmartins87655 жыл бұрын
Gostaria que fosse em português
@giuseppeortino418611 ай бұрын
In italiano no vero?....
@ghostridergr82593 жыл бұрын
thw second test you make...you must put set the tool on the top level of ω.. 100MΩ
@robertmorin6495 Жыл бұрын
No, that's not needed for a continuity test. Any short between either winding and the stack would cause the meter to beep or show continuity (zero resistance) just like the end to end test. And if this was the case the stator would need to be replaced.
@mustaphaboucheta39505 жыл бұрын
Formidable
@jpillstream5 жыл бұрын
3:48 minutes with porn music
@corrydriscoll69204 жыл бұрын
*FUNK
@lotar0078lotar00783 жыл бұрын
Quiten la música
@justincase85326 ай бұрын
Holy Bejeesus the music is awful.
@TheLabOtomy6 ай бұрын
Hallelujah!
@danielpirela23914 жыл бұрын
para leer busco un libro no un video... entiende un audio visual es didáctico lúdico pero nunca ruidoso y estridente si no lo entiendes no importa solo paso la pagina y listo
@makita_service27944 жыл бұрын
И как вам нравится это видео? Ремонт Makita DDF458... kzbin.info/www/bejne/m32loKKshcSEgNE
@danielpirela23914 жыл бұрын
si quisiera oir musica no visitara este sitio, acaso eres mudo ???? esto es perder el tiempo
@TheLabOtomy4 жыл бұрын
Aparentemente no puedes leer ... ¿Entonces quién es mudo?
@jonathanwilliams60554 жыл бұрын
] would 2 c the vidoe
@sershetech55844 жыл бұрын
😮👍👍👌 watching sub bro
@TheLabOtomy4 жыл бұрын
Appreciate it
@GerardoZuniga5 жыл бұрын
This is the MUTE guy 😂😂😂😂
@TheLabOtomy5 жыл бұрын
...
@briankscott064 жыл бұрын
Too bad you didn’t get the memo about adding stupid music to your videos, I’d of given you a thumbs up had you left the music out!
@TheLabOtomy4 жыл бұрын
Too bad you did not get the memo about me not caring about thumbs up...
@MatyasArby3 жыл бұрын
@@TheLabOtomy LOL, I liked the music, felt like I was watching Knight Rider!
@jnkmal95195 жыл бұрын
"Trouble" by Topher Mohr and Alex Elena = good jam :)