Wound Rotor Induction Motor Overview

Рет қаралды 15,903

3 жыл бұрын

This video covers the basic construction and operation of a wound rotor induction motor. We will also cover the advantages, disadvantages, and speed control.
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#WRIM #Rotor

Пікірлер: 43

@salfred8252 3 ай бұрын

Great video. 100 times more comprehensive than my teachers. Thank you. You've earned a well-deserved subscriber here.

@lespaul59burst 2 жыл бұрын

The best basic explanation of a wound rotor motor I have seen so far, thanks Zack!

@ZackHartle 2 жыл бұрын

That's great to hear. Thanks for watching!

@rafal6016 Жыл бұрын

This is amazing, much easier to learn from these videos than actual classes.

@ZackHartle Жыл бұрын

Glad you think so!

@daddsf27 2 жыл бұрын

thank you Mr. Zack

@MissionFitnessCTC Жыл бұрын

Good video. Thanks

@VARUN93383 Жыл бұрын

thanks for your video.

@kishankhavas1993 3 ай бұрын

awesome

@Sambulondlela 2 жыл бұрын

Great work 👏🏾

@ZackHartle 2 жыл бұрын

Thank you 🙌

@mohammadabdulfattah1867 11 ай бұрын

Thank you mr. Zack ❤

@ZackHartle 10 ай бұрын

My pleasure!

@sd5722 3 жыл бұрын

Good work.appreciated

@ZackHartle 3 жыл бұрын

Thanks a lot

@stephencarmichael667 2 жыл бұрын

Thank you Zack! Very helpful indeed. Have a great day as well!

@ZackHartle 2 жыл бұрын

Happy to help!

@stephencarmichael667 2 жыл бұрын

@@ZackHartle Thanks in part to you I aced my test on motors! Appreciated.

@ZackHartle 2 жыл бұрын

@@stephencarmichael667 Glad to hear it!

@MenzelMotors 3 жыл бұрын

nice

@ashwingopal9929 2 жыл бұрын

Very beautifully explain

@ZackHartle 2 жыл бұрын

Thank you so much 🙂

@tomondulich8113 Жыл бұрын

thanks for the video. if you were to replace a drum sw that controls the wrm with a pendant control operating a vfd to supply power to stator what would be the best setting of the resistors for the rotor? high,med or low redistance?

@qzorn4440 2 жыл бұрын

very nice info., on a 1000 hp 2300vac motor is there a formula on setting the timing resistance 5-steps on the 3 phase resistors grid to the bypass grid in run mode? 🤔thanks🙂

@jaydee4367 Жыл бұрын

Inductive reactance in the rotor is high when first started (due to the high slip speed) which is exactly why we want high resistance also for good starting torque. Resistance in a SCIM can't be changed to match inductance which is the entire advantage of a wound-rotor.

@Heybrother69 6 ай бұрын

Hi I have a question, do the leads coming from the slip rings to the resistors, they MUST be connected all 3 in some way for the motor to turn correct? Or are there some models where only two can be connected, none connected, for them to turn/work when energized?

@sham1234567891 2 жыл бұрын

Great stuff Zack! Is it possible to fit a wound rotor in place of a squirrel cage rotor in an induction motor? Thanks for a quick answer.

@ZackHartle 2 жыл бұрын

In theory it would work, if it fit perfectly. Just may not be quite as efficient.

@etiennewondju4593 3 жыл бұрын

Thanks Zack. I had hard time interlocking Washroom fan and furnace in the basement. Please could you provide me and wiring diagram for that. The problem is common for legal basement. Thank you

@ZackHartle 3 жыл бұрын

There's so many different options depending on the exact situation. I would recommend finding an electrician in your area to come take a look.

@jimbob5891 Жыл бұрын

I recently discovered a very old single phase 115/230 1/2 horse WRIM in an attic. The weird bit here is that it uses a commutator like a dc motor instead of single pole slip rings, and there is no provision for external resistors. The brushes simply connect some points on the commutator to other points on the commutator. The motor is reversed by rotating the brush assembly relative to the housing. So given that there is no resistor aided start going on here, why does this motor exist? What is the advantage of this over a regular squirrel cage motor? Edit: Looks like this is a repulsion motor. They did this to achieve high starting torque before the use of start capacitors was practical.

@joefaiola2564 3 жыл бұрын

Do you write backwards? Thanks for the in-depth video.

@ZackHartle 3 жыл бұрын

Nope, it's just fancy camera tricks

@bgaetz381 2 жыл бұрын

Look at the wedding ring on the right hand. He cant trick me!!!!!!!

@josephguida5432 3 жыл бұрын

The waste water treatment facilities throughout my city use WRIM’s for the main influent sewage pumps. More reliable than VFD’s for that purpose because of the severe and corrosive environment. They experimented with a VFD motor and it wouldn’t stop crapping out (no pun intended) so the WRIM’s proved to be worth the extra maintenance. I have a question if you don’t mind. If I connect 3-single phase transformers for 3-phase (parallel) operation, do I simply divide the load by 3 to get the KVA rating of each transformer? Of course the transformers should only be loaded to 80%, I’m assuming.

@ZackHartle 3 жыл бұрын

Very cool about the use of WRIMs still. Yep basically, although you wouldn't connect them directly in parallel

@josephguida5432 3 жыл бұрын

@@ZackHartle Understood, parallel was the wrong choice words.Thanks for your reply. Your parallel RLC video got me hooked on the voltage and current triangles. They dont allow us to use socahtoa functions on the calculator for the NYC City Electricians exam, but because of that video I’m able to do those parallel RLC’s with the combination (Z) coils now. First time I took that test back in 2006, they hit me with a 3 part question based on a parallel RLC circuit just about the same as the one in your highly viewed video. They didn’t even show us a parallel RLC in the prep course, let alone one with an RL coil. When I first saw that video of yours it was a big “Aha!” moment. I called all my electrician friends and told them to check out that video just to prove I wasn’t lying about that test question. Still got an 86.25 on it but if I had your help back then, I’m sure I could of hit a higher mark.

@sd5722 3 жыл бұрын

Pls make video on elevator motor control

@ZackHartle 3 жыл бұрын

Maybe one day. You can check out these videos though that might help you out: kzfaq.info/sun/PLQS5IUr7LE395MM2Bw6EDAFKWeK3eXtEY