How To Test an IGBT

[@eracismm]

You make great videos with real world scenarios...…….Thanks,...…. Please continue to make VFD training troubleshooting....You explanations are excellent.

[@Jay-fp8iy]

Thanks for the video. I've been taught OL means over limit.

[@thomwham2239]

Excellent explanation. Thank you for taking the time to share your knowledge. Cheers!

[@percydpercyd]

Thank you Sir, Extremely good video and very patiently expressed on how to test IGBT. I have seen this video almost 5 times as I am preparing for my marine ETO's oral examination and this video has helped me a lot. So my special thanks to you. Also I like your dog very much, reminds me of my darling Labrador Justus.

[@Scott-xc5sg]

Thank you for explaining this so well for electrical ignorant ppl like me. I’ve spent 48 hours trying to figure these things out on my welding machine. At least I can test it properly now and understand what’s wrong if anything there. Maybe if someone sees this… primeweld TIG 225 made a pop noise from the ground clamp. Probably bad ground.. no burn marks inside the machine anywhere at all. Did not trip the initial mini breaker on the machine rated 60A. Did not trip the breaker in my building rated 40A. Did however trip the breaker in my main supply breaker box outside about 50 yards away from the building, supplying the building separately from my house….this breaker is rated 50A. There is no other appliances or lights connected to the 220 breaker in my building that the welder was hooked to but there were several other things running inside the building. There was “corrosion?” on the big boy breaker outside… the huge circuit breaker that power from the poles comes to first. Anyway, now the welder won’t even turn on… nothing. I hook my plasma cutter up to the power supply and seems to work fine. Power supply seems ok. Mini breaker on the welder allows power to pass through when switched on… I guess that means it’s ok too? Any help would be much appreciated. I dare not take it to a repair store and not know what’s wrong with it beforehand. Amazing welder other than this btw 🤗. I have a feeling it’s not even the welding machine’s fault that it’s broke. Oh the welder is like I said primeweld TIG 225 AC/DC P … not the newer version TIG 225X, but I’m like 80% sure the only difference there is the pedal it come with.

[@amitpagare5946]

Never delete this video, very informative video 🙏🙏🙏

[@examplerkey]

Like MOSFETs, it's usually the lower side one that's blown or short due to the back EMF from the inductive load.

[@1612ydraw]

Very good video. Great tip to ground out the trigger gate and emitter to prevent false reading of bad power circuit.

[@lemmymbulo9366]

Amazing, would love to watch more

[@johnjohn-ne8fw]

most likely the best igbt video out here. thx...

[@rustammizov7886]

TThe best explanation I ever seen for noobs.

[@JohnFlanagan-hs1fv]

Love your puppy i have a beautiful German shepherd also. Great video

[@FirasGhabin]

Very well explained. Thanks for your efforts

[@niryashk9197]

Best video ever on igbt checking👍👍

[@ELECTROxigeno76.]

Good afternoon engineer. I loved your video. Thanks to him I was able to get out of a problem with a Haas brand module., 🎩

[@fwhy1454]

Thank you for taking the time to educate

[@sul6ansb]

Thank you, great explanation

[@LarryKapp1]

Thanks for the good tutorial - I am new to IGBT's so this helped understand how to test them.

[@jaykesapalaran5434]

Perfect tutorial.. very easy to understand 💌 THANK YOU VERY MUCH for sharing your knowledge ❤️

[@mohammadfaraz7789]

Good job brother

[@scotennis609]

Fantastic video. Thank you so much. You are a great technician and teacher.

[@seanc3912]

Thanks! Very detailed and knowledgeable! I appreciate the information!

[@MohammadArman-mv8wn]

I don't know what should I say... outstanding... fantastic.... Go ahead......

[@satishpower2544]

Superb explanation sir Thank you

[@123kkambiz]

Thank you very much for your time and thorough and useful explanation.

[@maxpowers5055]

Extremely helpful, thank you.

[@GapRecordingsNamibia]

Damn AWESOME video, thank you so much!

[@sagarnikam5827]

Excellent explanation

[@teelec7081]

Gracias por la explicación clarisima, desde Mexico, Thanks for the explanation greetings from Mexico

[@ZiadMoghalees]

Thank you sir, this video was so helpful to me

[@nawfeljellali5943]

Thank you very much for your explaining

[@teakgarner7568]

so the igbts your testing the same as using the igbt that resembles a mosfet?

[@evkef322]

Excellent tutorial!

[@defokoagne1434]

Thank you for the explanation.

[@mohamedali-ur7op]

Tks to share your knowledge. Well done brother.

[@philemonkitur5666]

Excellent explainable tutor

[@vikramgurjar2069]

Excellent explain to us... Thanks Sir

[@tsmupdatertsm7633]

Make sure no charge is on the gate if you test an IGBT. Thank you alot. I did not know that.

[@chittaranjanswain1859]

good demo and explanation

[@abittwisted]

Is this a DMOC Inverter Power Section? Thanks for the tip on how to test the igbt.

[@bappydewansajjad9297]

how many voltage need to input the gate way?? How to i know? Plz can u help me boss?

[@halayoutube-xo1tl]

How to test an IGBT PM300DSA120 MITSUBISHI please

[@berniecapal1308]

Thank you very much man, that was fantastic!!!

[@JesusGarcia-nx3du]

Very good explanation. Thank you.

[@mohammednajeebadurafi8976]

Thank you for the explanation ❤️

[@TheMadMagician87]

Excellent information, thanks!

[@WNAZ-WALA]

Thanks for explain about IGBT. ...test

[@brettallen7809]

Very good detailed explanation !! Thank you

[@1cameronjk]

Is this part of the Fanuc power supply/ Servo drive range?

[@electrotec7113]

Yes

[@PhilipHubbe]

Why are you shorting with the red lead of the multimeter?

[@wjimenezu]

Priceless

[@sivasankarmavuduri5175]

Best and complete video of testing an IGBT....don't need another video for this.......kudoos ❤️❤️❤️❤️

[@electrotec7113]

Thank you for your comment!

[@sachinchaudhary3801]

Good! Please make a video on 'how to check IC's and microcontrollers'.

[@hemanthkumar630]

thanks for appreciable tips

[@chiahunglin5138]

Very good message, bro!

[@shameshame9772]

Powerful explanation Thankful

[@paulsorensen8638]

Thanks a bunch! That helped a lot!

[@fernandogoncalves8960]

Awesome!!! Perfect explanation 👏👏👏👏

[@electrotec7113]

Thank you

[@ragupathiram9955]

Awesome Explanation Thank you bro...

[@impactodelsurenterprise2440]

Is that flyback diode connected in parallel to the CE or does it just represent a diode between CE?

[@jaym5938]

Question: isn't it possible, when testing high voltage IGBTs, that the multimeter may not have enough voltage to test if the component is failing at higher voltages?

[@electrotec7113]

Yes, most people don't have access to that testing equipment. These tests will work for 9 out of 10 failures though. I've tested a lot of bad IGBTs over the years, and this shows a failure in almost all instances.

[@ageorgantas]

what a nice video, thanks man

[@manojgeorge9737]

Very helpful video....thank u sir.

[@anushkakiranlamba9046]

Sir we could also kept the multimeter in continuity mode while checking between c and e? I think between e and g, it should be ohms , bet c and e should be in meg ohms and bet c and g also in meg ohms....is it right???

[@rico2207]

Very good..nice job

[@azeemnaseer1912]

Very nice explanation

[@clems6989]

Great Job my friend !

[@saiddinar9447]

Gooooood job

[@wisdom_wellness365]

Very nice!

[@poppypop3566]

Sir can you explain how to check SEMIKRON skiip 12nab IGBT WITH MULTIMETER,

[@josephaustin5377]

Vedey Vedey Guud 👍🏼

[@arc3075]

Can an SCR & an IGBT both be tested with the diode function?

[@majedhejazi7249]

very helpful, it is appreciated job

[@mohamadhady1518]

Thank you the best explanation

[@simondetlefsen3607]

Great video 😊

[@mohamedaraby3629]

good explanation sir

[@fprossesor]

This video is very nice.

[@bulent5087]

Thanks brodher 👍

[@francuahf]

Please tell me, when checking the device, my modules seem to be intact, but when testing with a lamp, they open with a positive bias on the shutter and the lamp ignites, and if you remove the bias, they immediately close without holding the collector-emitter transition in the open state, is this correct or not?

[@EnergySeeker]

when 2 are series like that and rated at 1200 v each then this can take up to 2400 volts right ?

[@fernandespeter9232]

Awesome video. Cheers bro.

[@angelosemilla2804]

What if DC buss voltage imbalance this is connected to igbt?

[@ishukaushikvideo6120]

Hello sir I am an electronic industrial engineer and Repairing all make vfd 1kw to 1000kw at components levels and can installation vfds at different different applications so do you have any requirement for this profile.

[@subhashkuttenpillai63]

Where u located?

[@ninjatrt]

Recently my machine filter capacitor 105k 630v burn which connect to IGBT. 8.25 charge G1 to E1 there is reading on C1 to E1 about 0.444. Once short there no reading. When i do charge on G1 to E1pin. I can't get reading between C1 to E1. Base on measure show 393 reading. After combine show 789. My IGBT only shiw 270 and combine show about 528. Im testing CM400DY-12nf Its could be igbt faulty?

[@chandanbarik8782]

Very Helpfull video......

[@manjunathm5524]

Superb explain

[@omsaiproperty8843]

Im geeting a undervoltage alarm 73 in groudfoss vfd booster pump

[@bilalbelkacem4903]

problem in the power board (rint) of abb

[@aqkhan7253]

Good work

[@justingeorge1876]

GREAT INFO

[@faisal5370526]

Good information Dear brother 👍👍👍❤👏

[@simondetlefsen3607]

Maybe could have had the circuit diagram in picture when doing the testing for people like me 😅

[@shaikabdullah7566]

Wonderful explain thank you very sir

[@dennisdownes9319]

Excellent!

[@arturwrt6347]

Nice!, Power element check out...Thanks for sharing

[@nassimkoubeissi5814]

Using dynamic testing is more accurate just connect an analogue ohm meter and set to x10k put red probe on emitter and black probe on the collector Now get a standard bench power supply connect black wire to the emitter and red wire to gate Now the ohm meter shows open When u increase the voltage on gate to 4vdc you see the needles starts to move showing a very high resistance as you increase voltage let's say 100mv per step you notice the needle reading lower ohm after 5.5v reach the needle is at full deflection 0 ohm This is the ohmic region of the collector emitter testing some defect igbt looks ok using multimeter diode testing But when testing using the gate voltage testing mentioned here The collector emitter ohmic region doesn't respond to the gate voltage increase . I repair bldc motor 3 phase bridges and its reliable everytime .

[@electrotec7113]

Excellent response! Thank you. You are exactly correct! The reason I didnt perform a test like that, was because a majority of newbies watching these videos do not have a variable power supply. But I agree, your description is more accurate.

[@nassimkoubeissi5814]

@@electrotec7113 Thank you sir I m specializes in Repair power electronic circuits Like a bldc motor driver circuit And power dc Ac inverter. Imagine you open a 15kv dc ac inverter and see a rack full of igbts I use this test to know which one is not working well . A bench dc power supply set a current limit as 100ma and star increasing voltage on gate A faulty igbt will show a response bouncing while constantly increasing voltage on gate This test doesn't affect or damage the driving circuit .

[@thundrwaffle]

What does the arrow indicate on the diagram? Current direction?

[@electrotec7113]

The arrow indicates the direction current is allowed to flow for diodes. For transistors, it indicates the gate - emitter (base - emitter) junction and also the direction of current needed or voltage bias for IGBTs. All of this in the mindset that current flows from positive to negative (conventional flow).

[@ifeanyijudah6884]

I work with Variable speed drives, and i have a faulty one here displaying 32 Volts out when the drive is not powered on. Could it be a damaged IGBT ?

[@electrotec7113]

If the drive is powered off, where are you getting the 32 volt reading from? Is the DC bus energized?

[@ifeanyijudah6884]

@@electrotec7113 it's on the display of the drive. I haven't measured the DC Bus yet, i measured the drive output and the input of the step-up transformer, which the drive is supplying: it's barely 4V

[@sergioresendes4116]

Very nice explication

[@vincentwhite7693]

The best!