Thanks so much i am grateful for this online course very much appreciate bless

Very cool. Very well explained, I would like to congratulate you for the initiative.

You are incredible. Thanks for teaching us.

Thanks a million for your great explanation and effort. Kind regards.

Great explaination. Tqvm.

excellent video. Thank you. Very thorough explanation.

Great explanation, very understandable. thanks

Awesome video man, gave a great explanation on how to check the bridge rec and igbt, I will defiantly be using this method from time to time.

Awesome video. I always wondered how to do some kind of test like this to support me saying, " Drive is bad boss".

Great video that helps me to understand deeper in VFDs drive field

Very nice explanation!

Excellent Video. If you have a problem with your control board, this may also be a cause of IGBT Gate short-circuited. Beware. The gates could not be accessed from outside, dismantle and check.

Thank you sir. Well explained I salut for your generosity.

@electronictech785

3 жыл бұрын

So nice of you

Awesome explanation 👏🏻

Great explaination sir, god bless you

Valuable information thanks buddy

Thanks i've learned the basic test.

Thank you for the video it is very helpful

Job well done..

Excellent video. I never considered that method of testing.

Thanks for the video

Very good explanation carry on thanks for it.

Wow great, now I understand...

Thanks for your tutorial .. gob bless sir..

Great information. Kuuyaaa.

Thanks so much

Thank you LU

Thank you.

Thank you another day another learn

@gatedavid95

2 жыл бұрын

Good explanation

Best video i found superb thanks a lott

@electronictech785

4 жыл бұрын

Most welcome 😊

How about checking the rectifier diodes with reverse polarity? You checked the forward voltage drop, but if you switch the leads, you should get an open. If you get anything other than high resistance, the diode could be shorted. Take into account the fact that the huge filter caps will take a bit to charge, and you might see a temporary short because of that.

@cdrive5757

10 ай бұрын

Have you ever revisited your comment since you posted it? I know it must have made sense to you when you posted it but think about what you said. Wakodahatchee Chris

Great explanation thanks . How we test hi hight volts for leak iGBT

great video What would be the readings if there was a short circuit?

Anything different w allen bradley 4's and 40's with this kind of testing?? Also thank you for all your info

Thanks

@electronictech785

5 жыл бұрын

my pleasure!!

thxs for video learning...can you give some information and application of SEMITRNS M SKKR400/0.2-BVR for VFD design and function..thank you and best regards Sir

Thanks Lou very informative. How do I reach you?

Dear Friend, Thank you for your video, i would like to know that i don't have 3 phase 380v.line in my workshop. Only 220v. available, how i can check my vfd after repair it? Plz let me know it will be very useful to me. Thanks

Please make a video on siemens simovert 430 440 drive and abb dcs drive 550 checking

Awesome we'll cover

Could you discuss what the DC Buss terminals are? I see there are 4 terminals.

Thez video on. Ac drive was very good Iexplain how the. Ac drive works I would like to see trouble shout videos and =epairs.

can you test when powered up

Good Evening. I have washing machine (laundry) using single phase input with 3 phase motor. My priblem is.... The motor body tempreture very hot, touch by hand. Than sometime, motor not running. In this case, motor problem or VFD problem? Plesse advise.

@electronictech785

4 жыл бұрын

A single phase being turned back to 3 phase is already not the best way to drive a motor but with that being said, I would check the motor out first if its heating up.

i have an AC motor inverter EDS2000 model. and i followed your instructions to test it. the result showed the same as in your video instructions, but when i power it up and press RUN, it showed error E013. could you recommend something?

@electronictech785

4 жыл бұрын

I don't have the manual for the drive. What does the E013 fault?

I have a question sir. ig5a lsis vfd. It’s showing low voltage when i run the drive. What should i do sir? We are audience waiting for your kind information. Thank you sir.

Thought it would be more indepth and more visual .

@RyanJardina

5 жыл бұрын

How more in depth do you need? The only thing that's really missing is he should be drinking a bottle of whiskey.

is this want I use to work with dealing with Variable Frequency Drives ?

@electronictech785

4 жыл бұрын

The higher horsepower VFD is profitable. You have to know what industry and where they are at.

@jsteele42378

4 жыл бұрын

@@electronictech785 Wow you are getting into some really super tech and more that nice to know subjects ! ! ! ! ! !

Hi, this test can be conducted in a new vfd. Or ii need to power it first .then disconnect the cables . I tested in a new vfd but everything is open. That's my question. Again what if the cable is faulty or motor . One say whole the cable was faulty the vfd was showing dc bus over voltage can you explain that to ne

@electronictech785

4 жыл бұрын

Yes, new and used. You are checking the bridge rectifier and the IGBTs. This test is not for testing cables so the line input cables and motor cables should be disconnected. DC Bus over voltage means that the voltage on the Bus has exceeded the VFDs threshold.

@janmalesela2510

4 жыл бұрын

@@electronictech785 hi sir, I tested new vfd everything is one. Testing diode forward bias is open. Testing Igbt is open. Now I was just asking need to charge the resistor or not .

Most of the VFDs sold today don't provide the + and - terminals for the DC bus. How can the diodes be checked without the + and - terminals?

@electronictech785

4 жыл бұрын

In that case, you'll have to get access to the bus caps which would require you to take it apart. The only time we see VFDs with no + and - terminals are the small Horse Power VFDs.

@jerrellmahan4814

4 жыл бұрын

@@electronictech785That's what I was afraid of. Thanks for your help.

Dear sir thank you this inverter is diagram please

This inverter schematics diagram please.

PB where is conected?

pls i did my static check and my igbt module is good but yet i didnt get power output even when the drive is running using the local mode

Sir how can resolve problem fault code 5696 pu state feedback in abb acs 880 vfd drive

I can't seem to remember is 3 phase " each leg is 70 degrees or 30 degrees out of phase with each other " ? chit seems I wouldn't for get and maybe I wrong.

@electronictech785

4 жыл бұрын

For a three-phase AC voltage source, the phase shift is 120° with respect to each other

@jsteele42378

4 жыл бұрын

@@electronictech785 Yep sorry I now remember thanks so much ! I was thinking that this was the reason that several motors and compresses did need starter cap if you had 3 phase.

How to contact u sir

Sir I teach Ac drive repairing video upload thanks

@electronictech785

4 жыл бұрын

you're welcome!!

Hello Sir, I sell electromagnetic heater , I wish can repair by our self can you teach us ? I would send the photos of electromagnetic heater if can teach for us to repair it..

Hello sir, Thanks for your effort. => As power electronics engineer, I know this thing, i thought u may explain testing of control circuit, or driver circuit problem or feedback portion at signal level. Very disappointed.