How to Test Motor Start and Motor Run AC Capacitor of ac fan and compressor

Рет қаралды 2,317,318

7 жыл бұрын

In this video, I have tested a 440VAC 30 MFD start capacitor by using 4 different methods. So that if you don't have a Capacitance meter, still you can test the capacitors.
Previous Video:
How to Test Capacitors with and without Multi-meter.
• How to Test Capacitors...
01:13 [1st method:]
In the first method, I have tested the start capacitor without using any multimeter. If you don't have the multimeter or any small DC source then you can use this method. But you have to take proper safety precautions.
03:22 [2nd method:]
In this method, I have used a 20 volt DC source to charge the capacitor,
and a small DC load to discharge it.
04:37 [3rd method:]
In the 3rd method, I have used a multi-meter that has ohm scale, to test the start capacitor. with the above 3 methods, you can check the charging and discharging of the capacitor.
06:24 [4th method:]
In the last method, I have used a multimeter that has capacitance (Farad) scale to test the capacitor. This is the most accurate method for testing the capacitor.
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Пікірлер: 305

@oldroscoe2590 4 жыл бұрын

I've got an old motor with a start capacitor, the motor only hums when I try to start it. I cleaned the centrifugal switch contacts and it still only hums on start...... so I wanted to test the capacitor and that's how I wound up here. Now I shall go test the capacitor, I'll be right back with the results........ and I'm back and still alive .... the capacitor on the motor is DEAD, won't hold a charge after numerous attempts. Another capacitor I happened to have did hold a charge and a nice spark on the run and start side. I 'll order the correct capacitor for the old motor and see if that will get it to start properly. Thanks for the youtube. No telling how many motors go to the scrap yard when a new capacitor would fix them. Thanks again.

@6A8G 5 жыл бұрын

The first way looks the best fun but please use a quick test block or similar. These are designed to temporarily connect things to the mains. Just makes it a bit safer for you. Thank you so much for posting:)

@mohamedsaad6506 2 жыл бұрын

kzfaq.info/get/bejne/j62De8aqvNDZaZc.html

@usherkaliwonge3082 2 жыл бұрын

But I have question,, if that dead dry battery acid use like they way done to use salt with water. So if you put salt with water for that dry dead Battery so you gona using only salt with water or u can put also acid in that battery?

@N0G0MAIL 2 жыл бұрын

Excellent. We can measure the capacity of 30uF using another capacitor. If we have another 30uF, we put them in series and we have 15uF. If we have one under 20uF, we measure it and we find the value = a, then we put it in series with the larger capacitor and we find the value = b, b

@vashudevmanna 6 жыл бұрын

thank you for valuable knowledge

@joeli1571 6 жыл бұрын

Excellent amazing clear and understanding how to test different method on capacitor..... great video!! definitely will follow your videos.

@TechStudyCell 6 жыл бұрын

Thank you for your feedbacks...

@mohamedsaad6506 2 жыл бұрын

kzfaq.info/get/bejne/j62De8aqvNDZaZc.html

@grandebigy 4 жыл бұрын

Looking all over for this . You solved my problem thanks

@dodznb238 2 жыл бұрын

Hello my dear friend capacitor i think this copacitor is could running capacitor , starting capacitor is normally open in start motor, running capacitor is not open thrle motor is opperation..thank you for sharing tjid video..👇👇👇🤝🙏🏼

@IanSolomons73 6 жыл бұрын

Hi. Thanks so much. You've save me around 4900 rupees

@Nmomand1 2 жыл бұрын

I knew three methods, but now, I know all about capacitors testing. THANK YOU.

@phillipribbe4928 2 жыл бұрын

Very clear and simple, thank you.

@ben6089 5 жыл бұрын

Great video, nice you shown 4 different ways. The first way looks to be the most fun.

@TechStudyCell 5 жыл бұрын

Thanks for your feedback 😊

@eagleeyes6972 4 жыл бұрын

thanks for a good job. that you explain in different ways. I follow your job and look forward to more about other things i have idea but i don't know if it is appropriate to say publicly but if you want let me know

@AmbroseAgde 4 жыл бұрын

Excellent video. Thanks a lot for sharing those tips. The first method is somewhat "hair raising"! :)

@TechStudyCell 4 жыл бұрын

Thanks for your feedback 😊

@charleshughbryan5603 3 жыл бұрын

Thanks for a great video in excellent English and explained so a novice can duplicate it.

@rammuana5266 2 жыл бұрын

Aside your simplicity and skills I enjoyed your videos Mostly because other videos out there were in hindi which many will not understand including me of course. Keep up, much appreciated👍👍

@johncasor9698 7 жыл бұрын

Another Great Video... Thank You Very Very MUCH....

@TechStudyCell 7 жыл бұрын

You are welcome...

@johndaka6968 4 жыл бұрын

Simple and straight forward practical experiment on how to test a capacitor.. AWESOME...

@TechStudyCell 4 жыл бұрын

Thanks. But if you have multimeter then refer this kzfaq.info/get/bejne/h71zf7OXrtjUXWg.html

@kabandajamir9844 Жыл бұрын

The world's best teacher thanks sir

@modimaruti5874 6 жыл бұрын

Great informative video sir 👍 👍 👍

@davidcoro27 7 жыл бұрын

Great help, thank you.

@TechStudyCell 7 жыл бұрын

You are welcome.

@soundarajans1258 6 жыл бұрын

David Coro 77

@Boubaker_elbikam 6 жыл бұрын

thank you so much

@jayryan7473 4 жыл бұрын

One of the best capacitor testing videos on KZfaq. Thanks!

@luanyeung2385 3 жыл бұрын

@sabahabdullah356 4 жыл бұрын

Thank you very much my friend.

@debjanibanerjee7390 7 жыл бұрын

Great video...

@gazaziho 5 жыл бұрын

It's informative video. . Thanks alot

@TechStudyCell 5 жыл бұрын

you are welcome

@normanpaxo4475 5 жыл бұрын

Thumbs up for anyone encouraging poking bare wires in a plug socket. Who needs a multimeter. Your balls are BIG

@MrDATOPIDI 3 жыл бұрын

Thanks for the info. Good explanation. Keep it up.

@VeganBytes 3 ай бұрын

Thank you for the video. I also have the 4 pin type, it's a cbb60 for a MacAllister COD2000FLS tablesaw. After testing the cap, it seems to be okay, it's holding and releasing charge perfectly. Looks like I need a new saw 🫠 Leaving the brand and model number here for owners who run into the same issue, so let's hope Google search leads them here 👍

@giorgiovasta7128 4 жыл бұрын

Great video and very professional and good job 👏🏻

@TechStudyCell 4 жыл бұрын

Thanks

@timallen6025 3 жыл бұрын

Yup. Fixed washer dryer , thank you Sir Thinking Mans tv 👍👍🙏

@KYTVIDEO 4 жыл бұрын

great video!

@TechStudyCell 4 жыл бұрын

Thanks

@joesanmartin776 5 жыл бұрын

Thank you very much. This was very helpful.

@TechStudyCell 5 жыл бұрын

You are welcome 😊

@Savage-lx5yj 2 жыл бұрын

Excellent! Thanks!👍

@PitchPerfectKill 3 жыл бұрын

Thank you, very informative!

@TechStudyCell 3 жыл бұрын

Glad it was helpful!

@jononeil500 3 жыл бұрын

Excellent explanation. Very comprehensive. Thank you!

@TechStudyCell 3 жыл бұрын

You are welcome

@queasyRider3 2 жыл бұрын

You are brave to test like that. And much more experienced with electricity than I am. I'll call an AC tech instead; but thanks for letting me know how risky this can be.

@leedevries5660 4 жыл бұрын

It should be realized that when applying a capacitor to AC mains and removing it, there will be a DC voltage present. The size of the voltage will be determined by when the supply was removed in the AC cycle. It could be anywhere between 0 and +/- 340V DC ( as the peak DC voltage is 1.414 times the AC RMS voltage, My method is to connect the capacitor to a IEC lead, plugging it into a power point and switching the power ON and OFF briefly. I then remove the lead from the mains supply & I measure the voltage with the multimeter and look for a voltage >300 Volts. Discharge the capacitor by short circuiting it and repeat the process several times for voltage >300 Volts. Then measure the voltage every 5 minutes or so & if the capacitor is still charged to the same voltage, you have a good capacitor. If not it is leaky to some degree and should be replaced. Discharge the capacitor before removing it from the IEC connector! I don't think we should be showing anyone "poking things into power points directly" If you do this sort of testing a lot, make up a lead with insulated alligator clips (sometimes know as a suicide cord), but do not leave it lying around!

@zubairkhan6937 4 жыл бұрын

I am agreed.

@zubairkhan6937 4 жыл бұрын

What about this if we connect the capacitor in series with 220 volt A.C bulb of 60 or 100 watt?

@unnikrishnanchevidan8243 Жыл бұрын

what is the meaning IEC lead.

@rizaldemelecio8847 5 жыл бұрын

thanks for info.

@TechStudyCell 5 жыл бұрын

You are welcome 😊

@RudeMcNasty 6 жыл бұрын

Yours is the fourth video I've watched on the subject and by far the most helpful! Thank you.

@TechStudyCell 6 жыл бұрын

Thanks for the feedback...

@desalegnderesa8352 4 жыл бұрын

Thanks

@selvampandurengan6191 5 жыл бұрын

sir very useful this video thanks

@TechStudyCell 5 жыл бұрын

You are welcome.

@samuelusen3919 4 жыл бұрын

Teachable i really lean something .

@TechStudyCell 4 жыл бұрын

Thanks

@arcadesunday4592 2 жыл бұрын

Thanks for the video. How do you know if such a capacitor is actually faulty or needs to be replaced? I've got a garage door opener motor which no longer works, and I think the capacitor is dead... When I test with multimeter (3rd method) nothing happens at all on multimeter. Just stays on 0.0?

@junaidalam5745 Жыл бұрын

Very good knowledge you shared

@4games2gamers 6 жыл бұрын

yes i did: thumbs up

@TechStudyCell 6 жыл бұрын

Thanks...

@williamreith1632 5 жыл бұрын

Thanks for the very clear explanation. Thumbs up.

@anthonystar Жыл бұрын

Dude really brave wtf don't get shocked :)

@wernerhorne5354 Жыл бұрын

Thank you.

@sangtaobuzz 4 ай бұрын

Rất tốt, đã đang ký kênh.

@bilicbuilt 3 жыл бұрын

good video, thanks for info, well explained, can you please tell me how can I find out, how many uf capacitor is, if the label is not readable thanks

@joseamaya6515 4 жыл бұрын

an excellent video

@rayanmartowikromo4527 4 жыл бұрын

first all thank you for the helpful video.Did helped me. second tank you for speaking english and not like other indian making great video but speaking hindi .how the hell would the rest of the world understand ? so thank you sir

@TechStudyCell 4 жыл бұрын

It's my pleasure

@jackrichards1863 Жыл бұрын

@@TechStudyCell I am certain that fellow meant 'Second, thank you...' rather than 'Srcond tank......' good instruction. Quickly told us what to do and all about it. Great work, no confusion!

@simpliciocamirino2271 2 жыл бұрын

thank you for that sharing sir.

@luisortho1165 2 жыл бұрын

Just viewed your video, thanks I appreciate it.😎

@kilnprabu 4 жыл бұрын

can this be connected to a battery for a moise trap, i had few of those from a ripped washing Machine

@dzmalekvali1110 5 жыл бұрын

SAFETY is number 1 I see..

@SunilSaini-in4vr 5 жыл бұрын

UV suspicious toxic cup goncff

@IamFreeRu 6 жыл бұрын

Thank you

@TechStudyCell 6 жыл бұрын

welcome...

@user-en8rf4cp2x 4 жыл бұрын

I don't hate you u r a great man

@SarjanaObeng 5 жыл бұрын

Thank you. This trick really useful for my trouble since I only have a multimeter without capacitance meter. My air con capacitor shows still charge and discharge by the multimeter, but how can I know that the function is still good?

@sanjayseal7519 2 жыл бұрын

I have a Crompton water pump of 1 hp, recently I replaced the capacitor with same MFD but my previous capacitor has two terminal or wire in it and the new one which I purchased has 4 terminal, can in install it to the new one?

@MEP.ENGINEERING.WORKS92 2 жыл бұрын

Good work brother

@TechStudyCell 2 жыл бұрын

Thanks

@simpliciocamirino2271 2 жыл бұрын

Thank you for that sharing sir.

@eddyoddrod 5 жыл бұрын

Helpful video. I did have to use the captions. My brain just isn't wired for that accent. Good video though.

@TechStudyCell 5 жыл бұрын

Thanks...

@stephenaquila7510 6 жыл бұрын

Thanks, very helpful, I really appreciate that teaching, but I will really be happy too to get a line to contact you we needed;thanks.

@TechStudyCell 6 жыл бұрын

You are welcome...

@mohamedsaad6506 2 жыл бұрын

kzfaq.info/get/bejne/j62De8aqvNDZaZc.html

@PRNadh 5 жыл бұрын

Please note that, while doing this, I suggest that capacitor not to be connected directly even little time, since we want check capacitor is Ok or nor, there may be open or short internal, it should be always to be connected one series lamp with this, so the test will be safe, if not incase short, it will explode with no time.

@avp192 5 жыл бұрын

I think its better you use a resistance in series while connecting in mains and discharging

@surajrisingsun7037 6 жыл бұрын

very nice .......

@TechStudyCell 6 жыл бұрын

Thanks...

@rs4912 11 ай бұрын

Hello. 😊Thanks for the good explanation. I have a question. I am going to replace a capacitor on a power generator, and am wondering if a normal starting capacitor can be used for this, or if there are special capacitors for generators? ( 18uf 400 - 450 volts 5% 17-10 w ) Thanks

@febiankasongo1297 4 жыл бұрын

Great vid like it 👍.

@TechStudyCell 4 жыл бұрын

Thanks

@mikr1334 7 жыл бұрын

You can charge capacitor by use a diode for high voltage. In this way you can charge at max voltage all the capacity.

@TechStudyCell 7 жыл бұрын

yes. but I have tried to show the testing of a start capacitor without any component and tools.

@mikr1334 7 жыл бұрын

Yes, I understand this, but you don't will have never the total capacity and so if the capacitor is very good or less.

@jayryan7473 4 жыл бұрын

@@mikr1334 You really don't understand.

@neatt3815 3 жыл бұрын

I have a portable air conditioner that doesn't work. I have removed the start capacitor and tested the resistance and it's on overload no matter what ohm setting I put my multimeter on. I have tried charging it, and discharging it and it's always the same. Is it safe to assume the capacitor is dead?

@mohmmadmahmood8564 7 жыл бұрын

it is OK

@cwmrypsbudget9646 5 жыл бұрын

Very good video

@TechStudyCell 5 жыл бұрын

Thanks 😊

@Aquvid 2 жыл бұрын

THx!!!

@pclalhriatpuia984 4 жыл бұрын

Excellent

@northstar2782 6 жыл бұрын

Bravo

@luigicaneri122 6 жыл бұрын

Northstar 27 come installare power director

@cyrusaraza1720 2 жыл бұрын

Sir may I ask, if I have a motor starting capacitor for "Dough Mixer" of 80µF 10+20% 270V, and I have a reading of 85µF, shall I say that the capacitor is in excellent condition?

@viswanathancr349 3 жыл бұрын

good video

@emmettcoen 7 жыл бұрын

Nice video.. I need help :( I have a power washer, it was humming on start and not running, I had a larger capacitor in garage and changed it over, motor ran for a minute and blew up capacitor, it was rated over double uf.. Is it a start or run capacitor? There is only one so I assumed it was a start,.. I will send link to power washer pdf parts :) thanks if you can help

@TechStudyCell 7 жыл бұрын

If no centrifugal switch connected in series with the capacitor then the capacitor remains connected during running period. Please always replace the capacitor having the same rating (uf must be same, voltage and temp can be higher or same) for both start and run capacitors.

@saifulislamtipu3144 6 жыл бұрын

nice

@majed9r 4 жыл бұрын

5:53 increasing not decreasing !

@peterco2600 4 жыл бұрын

Very helpful, thank you

@shrikeshbhaipatel4137 7 жыл бұрын

nice

@viswanathaniyer2372 5 жыл бұрын

very good viedeo

@TechStudyCell 5 жыл бұрын

Thanks...

@davidfildes9826 4 жыл бұрын

Buy a new one.. you can test the old won using the continuity on your VOM to charge and test. Apply leads then reverse you should see a voltage kick if still good...

@MrGarcon98 4 жыл бұрын

good job

@TechStudyCell 4 жыл бұрын

Thanks

@RicksAdvantechAutoRepair 5 жыл бұрын

DANGER Will Robinson! DANGER!

@engineert.r.t1983 3 жыл бұрын

Nice video

@komoxbugai8251 3 жыл бұрын

Helpful

@ADtechnicalGyan 3 жыл бұрын

Nice

@practicallab Жыл бұрын

good brother

@sivanagarajukillampalli5872 6 жыл бұрын

Sir minilec wlc d1 connection to the submersible starter diagram

@danzelwesingtone7413 2 жыл бұрын

nice tutorial brother very good help

@bharathiraja6066 4 жыл бұрын

Sir how to choose the capacitor in single phase motor and three phase motor in 2 phase condition adding of phase shifting

@engrsaifulsaif 4 жыл бұрын

good video. this is my PLC base channel and its electrical base channel

@shuvendupattari8079 7 жыл бұрын

nyc

@ugurbayrak9869 6 жыл бұрын

could you please explain third method (or please refer to link explaining etc...)? how capacitor is charging without a source ?

@KesienaBrown 5 жыл бұрын

The multimeter has a souce. Recall to measure resistance, you need v=IR, so the resistance of the capacitor increases with increase in charging and vice versa.

@globalsheen1 3 жыл бұрын

Short the capacitor through series bulb. Discharge also through series bulb.

@spicky2966 3 жыл бұрын

4:55 is it 200k ohms or 2000k ohms pls i would appreciate it i need to test a 45uf capacitor..tks

@aalaworks 3 жыл бұрын

Good👌

@obaego9787 Жыл бұрын

Please can I change the capacitor of a summersible control box with a higher one with higher microfarad?

@abousamah1967 2 жыл бұрын

Very nice explnation But i think 450v is running cap Charging by dc it shoud less than second or no problem If ihave two 110v capacitor can i connect it with 220v without problems Thank u