As the unofficial inexperienced, read, slower older guy in my group of fellow Motor Controls students, I've got to say that this short, clear, and to-the-point video is very effective. Of course, I would have never had this "Ahah" moment had I not already taken the class to begin with. Seeds were sown, you just added the water. Keep up the good work!
I have watched this video a couple times. Every Electrical apprentice should watch this before they go to their motor control class. Strongly recommend!
Excellent explanation for some of us who are just getting started in this complex world of electricity/current! I am studying HVAC and needed a more thorough understanding of what a contactor is and it's principles, and I came to the right place.
Here I am over a year after graduating from my apprenticeship, watching MC videos and it finally clicking in my brain. I was one of the slower guys in my class and it almost always takes me longer to grasp complex (to me) concepts. I'm glad TH-cam exists 😂 Maybe next week I'll finally learn how to bend a 90.
This really made it easy to understand. I worked underground as a coal miner mechanic, electrician. I always got mixed up with a magnetic trip, thermal overload and contractor heat strips. We had a control button you had to hold that had a series circuit wired with an open ground monitor, plus other things to trip the load center main breaker. Out Line starters we’e in the miner and other 3 phase machines
Andy M...A very good analysis of motor controls. Only one thing missing...Shown is a push-button to start the motor. When the button is released, the motor stops. You should include the "stop" button and show how the aux switch is wired though the stop button to disconnect power from the starter solenoid and either keep the motor running or shut it off.
This was the best introduction on these subjects, I have ever watched.Trust me I have seen several over the years. This in my opinion was the best. Thank you for your time, education, and for making it available to me. Semper Fi.
13:19 I am a little confused here. Is a short circuit not a type of overcurrent? How does the MCP differentiate between short and the overcurrent of the inrush? Or rather, how does the magnetic protection differ from the thermal protection in this regard?
You are correct, a short circuit is a type of over current, but it has to do with how fast and how strong the current is. Short circuits cause a big spike in current very quickly, so the magnetic protection of the MCP will trip. An MCP does not have thermal overload protection, so it must be paired with an overload relay that is tuned to the operating current of the motor. When the motor is overloaded for a longer period of time, the overload relay keeps the motor windings from burning up from prolonged overcurrent.
At 15:18 why do you need a contactor as well as an overload relay? Can't the overload relay do what the contactor does as well as protect against overload?
I have quite quite a few 10HP, three phase motors on regular breakers, not MCPs. I haven’t seen an issue. I think there’s enough of a delay in the over current protection to allow for “small” motor in-rush. I do, however, still run contactors with heaters. If you run a disconnect, you still have either a branch circuit or homerun going to a breaker somewhere. I dunno about you, but I’ve never seen wires directly connected to a buss bar that wasn’t the service entrance cables.
Question: Why doesn’t the HMCP trip during the inrush when starting up a motor? 6-8 times the amps of the FLA of an industrial motor sounds significant enough to make that trip 🧐
the best explanation of motor starters and protection i ve ever seem very clear and unconfused thanks for take the time to teach other people your experiences
Breakers protect from overcurrent, not over heating. Overloads protect the motor from overheating, not overcurrent, Overheating can be caused by inductive reaction or if a motor is working to hard. which are also protected by fuses or breakers for overcurrent
afaq shah sorry first explanation wasn't correct. Both work via current (amps) but magnet breakers can be built with a relay to allow for the inrush. If current does not drop within relay time then the breaker will trip. Bi metal however is instantaneous and therefore cannot have a built in relay.
The bi-metallic strip is thin and rated at a constant thermal temp. Overload protections have different amperage rating, are easily replaceable, and are much thicker, which take awhile to heat up. Mind you that now a days you also have electronic overload protection, but i'm speaking of the old heater type overloads. The overload protection has thing metal strips inside with insulating pads between them, connected to a block of solder type metal which melts at a specific temperature, which has a ratcheting pawl molded in, once the metal reaches a certain temp it melts and lets the pawl spin, which activates the tripping lever, which is normally is just connected to a NC toggle switch on the side which cuts the voltage to the relay coil.
No. The Aux contact is mechanically connected to the up/down motion of the contactor armature and is a simple dry contact. So whatever voltage you put into the aux contact, comes out when you open and close it. For safety, the aux contact does have a max voltage rating.
First off let me say the video was very informative. My question is I have some older Machine tool equipment and would like to upgrade the controller's AKA Lathe, drill press and milling machine ,all 3 phase that I run on a 3 phase converter.
hi, i have a 3 leads 480v 3 phase motor. it's being used on a rooftop furnace to heat a furniture store. the furnace has 3 fuses, but 2 are burnt out. i replaced the fuses and they burned out again. i then checked the blower motor. the ground test shows OL readings on multimeter (so that's ok). but the resistance test from phase to phase was NOT. only one has about 5ohm reading while the other two has OL reading on my multimeter. does this mean 100% the motor is bad? thank you for your help.
Holy shit I wish I saw this video before I was working on assembly of electronic frequency converter cabinets. I'm an electric engineering student, so I have knowledge of even the fine details of electronics but we were never told anything about contactors really, so I was pretty much in the dark when it comes to those. Now I understand perfectly how these contactors work and props for explaining the aux contactors as well. This video just puts so many pieces of the puzzle together for me!
@@gregpartain4307 it is astonishing, i did 3 years of my EE degree and went to work sales at an electrical distributor where they hoped I would be useful in pushing automation controls/products. Funny, you get there and I can do math and draw how this all works on paper no problem, but when you tell me what motor youre running and I need to build a quote for what size box you need depending on several factors, what contactor depending on iec or nema, amperage based on HP, etc, the overload you need, do you want an mpcb or not or will it benefit you in your case. on and on, i need a start stop, along the line i need sensors for this application and these length cables etc etc etc i learned so fast that EE taught alot, but reality came with hard-wired devices, it comes with costs, risks. It comes with understanding the engineer and working with the electrician. Sales gave me alot of insight and meanwhile connections to a ton of local customers and industries. I stll enjoy videos like these because so many EE majors, or new salesman, NEED to learn these asap to move on quickly. I can teach others better when these guys can break it down so simply. I remember asking an EE major to draw me a holding circuit for a motor or whatever, simple momentary start/stop + contactor + relay and they draw a circuit that would you add the prices of what each thing costs, they are putting the highest priced item (ie motor) at the highest risk possible. Realistically stupid, but yet it tech would work.
This is the most basic form of control. Yes a set of normally open Auxiliary contacts mounted on the side of this contact can prove a call for the motor by sending power to a light indicating it is pulled in.Also the 2nd set of auxiliary contacts behind the first using a normally closed set can have a light wired to it and the light is showing a status of Standby which means i'm ready to run by the light being lit up when the contractor is not engaged. Then the contractor closes which opens the normally closed auxiliary contact turning the light off which indicates the motor is being told to run and no longer in standby by mode. It doesn't prove the motor is running, it just proves it's being told to run. Proving the motor is running would require a CT. A CT measure amperage as it is wrapped around one of the power legs to the motor. If the motor contact engages and power is present the motor is now under a load and will pull amps as a result of powering the motor and the CT reads the amperage and a circuit board the the CT is terminated to it sends power to a digital output that can send 24 12 or 110 volts to a light indicating it is under a load, although if it is an air moving motor it still doesn't prove air is being moved, you may have a powered motor but a broken belt, thus it is powered but not moving air, the way to prove it 100% is to mount an air pressure switch with a tube in the air stream that measure air pressure, if it sense's air movement and closes a normally set of open contacts with power on one side to close, that in turn can send a signal back to the control board with voltage now passing through the air pressure switch to a digital input of the board thus proves your motor has power but also is under a load and with the air proving switch, proves it is in fact working moving air. Hope this helps.
Cant find HMCB where am now , Can you tell me what best protection device ( ELCB - MCB - RCD - CB ) should be placed before 3 phase ( 2.1 kw ) grinder to use it saftey in a home ? To protect phases from if touched and to protect myself from machine . By the way the grinder already have contactor and on/off button only .
I have a 230v contractor 2 outputs. It’s a bch8-40 well I couldn’t find anywhere where I could see what to hook to a1 and a2. I found out I have to put 220v. Basically 110v leg a on one side a1 and 110v leg b on the other side a2. Why is there no good drawings of this! All I could find was to put 110v on a1 and neutral on a2 which doesn’t work!
very good...I did not learn in this video...i already know all off this...I just watch and make sure my knowledge about all of this is correct...and yes.im right? good explanation very clear..love your videos.this is useful for the begginers...but guys be careful...always double check your connections before energized your work of arts.. 👋👋👋
imagine watching videos like this for entertainment loving the concepts going to school and learning it further and then filling out hundreds of applications and getting told no every...single...time....
Not sure why this video was suggested, however a great video on motor control. You did miss one item on thermal overloads the old SQUARE D. These used a lead composite that unlocked a ratchet component to unlatch the circuit. Soooo old school but unfortunately they are still out there.
Fantastic, thank you sir for this awesome video. I learned so much.Please continue these videos ,I'll be grabbing my popcorn and enjoying everyone of your videos .
So I have got this Contactor for free, but how do I wire it up? The text on it doesn't make any sense to the relais schematics and such I can find. So how do I wire this up?
Whomever manages this website for these Eaton Videos, needs to do the site and us all a favor and put all these explanation videos done by this guy explaining this and these types of videos into a separate playlist for the video so they can be easy to find and watch. There are so so many videos from Eaton that it’s damn hard to find these kind of really super useful training videos and explained by this guy in the video. Someone please do us all a favor and make a separate video playlist for these super helpful videos. I learned so damn much watching this video that I wish all the videos done and explained by this guy was in a separate video playlist so I could watch them all and learn.
11:37 : you told at full speed OR at full load. the full speed is when there is no load on the motor and your speed will drop when you load your motor.
Excellent presentation about motor control and protection concepts from beginner to intermediate level including applications. Highly recommended for professionals for a refresher lesson in motor protection.
both a relay and a contactor have an armature.. they operate on the same principle and a contactor is basically a high voltage relay.; Both use a low voltage coil to move an armature that engages a set of contacts. but the difference is that an armature is only a component of a relay.
I am majoring in Industrial Electronics. Currently taking Motor controls and DC/AC machine theory this semester. This video was very helpful in my studies.
My electric motors teacher mr.thornton is a great teacher though I like to see these videos....this is extremely helpful broken down in great detail...thanks
Im using a water pump with pump switch(contactors) via pressure tank guage. My problem is when motor cant seem to pump water then motor will suicide run. I was thinking of a controller time based meaning with clock a system which cuts of power after running 7min and must be manually turned back on.
I have be doing motor controls for about 23 years and I still enjoy listening to this. I enjoyed it thank you..
As the unofficial inexperienced, read, slower older guy in my group of fellow Motor Controls students, I've got to say that this short, clear, and to-the-point video is very effective. Of course, I would have never had this "Ahah" moment had I not already taken the class to begin with. Seeds were sown, you just added the water. Keep up the good work!
The best technical teacher excellent 👌
I have watched this video a couple times. Every Electrical apprentice should watch this before they go to their motor control class. Strongly recommend!
Excellent explanation for some of us who are just getting started in this complex world of electricity/current! I am studying HVAC and needed a more thorough understanding of what a contactor is and it's principles, and I came to the right place.
Here I am over a year after graduating from my apprenticeship, watching MC videos and it finally clicking in my brain. I was one of the slower guys in my class and it almost always takes me longer to grasp complex (to me) concepts. I'm glad TH-cam exists 😂 Maybe next week I'll finally learn how to bend a 90.
This really made it easy to understand. I worked underground as a coal miner mechanic, electrician. I always got mixed up with a magnetic trip, thermal overload and contractor heat strips. We had a control button you had to hold that had a series circuit wired with an open ground monitor, plus other things to trip the load center main breaker. Out Line starters we’e in the miner and other 3 phase machines
Man it feels so good to expand your learning capabilities and have refresher topics at the same time.
Hhh+
I'm an EE major. Thank you for this clear and concise explanation of motor control.
Youre an EE major and you needed this video to clarify things for you?
Amazing, I guess any idiot can be an EE major.
Your not EE major lol
@@Dbr2408 You're right. I'm an EE now, and I work in aerospace.
Andy M...A very good analysis of motor controls. Only one thing missing...Shown is a push-button to start the motor. When the button is released, the motor stops. You should include the "stop" button and show how the aux switch is wired though the stop button to disconnect power from the starter solenoid and either keep the motor running or shut it off.
I learned more from this video than I did in an electronics course in college .... great video .... I liked and saved.
And Subscribed.
Best possible explanation of such a confusing thing and that too so easily... Bravo... U r d best
This was the best introduction on these subjects, I have ever watched.Trust me I have seen several over the years. This in my opinion was the best. Thank you for your time, education, and for making it available to me. Semper Fi.
On 5k
Good teacher
You are Claver
Best ever. Its the best way to learn from the beginning so you know and understand why you need it all...Many Thanks
Bravo. Organized, articulate and great graphics. Thank you!
Very nice and simple to understand explanation 👍👍
Excellent, I finally understand the terms, theory and application. Great presentation technique too!
13:19 I am a little confused here. Is a short circuit not a type of overcurrent? How does the MCP differentiate between short and the overcurrent of the inrush? Or rather, how does the magnetic protection differ from the thermal protection in this regard?
You are correct, a short circuit is a type of over current, but it has to do with how fast and how strong the current is. Short circuits cause a big spike in current very quickly, so the magnetic protection of the MCP will trip. An MCP does not have thermal overload protection, so it must be paired with an overload relay that is tuned to the operating current of the motor. When the motor is overloaded for a longer period of time, the overload relay keeps the motor windings from burning up from prolonged overcurrent.
I teach this, and this is the best video I've seen to explain motor control in 15 minutes.
I’m an electrician and needed a brush on motor controls. This is great.
The best 15 minutes you can spend for a solid overview on basic motor control!
At 15:18 why do you need a contactor as well as an overload relay? Can't the overload relay do what the contactor does as well as protect against overload?
outstanding way of explaination
Excellent teaching. It's explained in an easy to understand way.
I have learned that to control a motor, we must have a short circuit protection and over current protection. Thanks.
Simply Wonderful! Crisp and to the point.
I have quite quite a few 10HP, three phase motors on regular breakers, not MCPs. I haven’t seen an issue. I think there’s enough of a delay in the over current protection to allow for “small” motor in-rush. I do, however, still run contactors with heaters.
If you run a disconnect, you still have either a branch circuit or homerun going to a breaker somewhere. I dunno about you, but I’ve never seen wires directly connected to a buss bar that wasn’t the service entrance cables.
So what other disastrous things that only a forklift operator could pull out unexpectedly just to ruin a blue sunny coronavirus day"
Question: Why doesn’t the HMCP trip during the inrush when starting up a motor? 6-8 times the amps of the FLA of an industrial motor sounds significant enough to make that trip 🧐
the best explanation of motor starters and protection i ve ever seem very clear and unconfused thanks for take the time to teach other people your experiences
Very nice presentation. If I may add, the "inrush" current is also called "locked rotor" amp.
Wrong
Wtf. I leanred more in this video then in my motor controls class SMH.
is this all MCC(motor control center )
Jose V. Lmao
Hehe yep trade school is a joke
Lol
I felt that way too but then again 7 yrs ago i was 20yrs old so i was in class dickn Around. 😇
Thanks a lot sir, 15 days lessons in 15 minutes. Awesome
Breakers protect from overcurrent, not over heating. Overloads protect the motor from overheating, not overcurrent, Overheating can be caused by inductive reaction or if a motor is working to hard. which are also protected by fuses or breakers for overcurrent
Very good explanation of how to control a motor. Loved the illustrations as well
i must say you are absolutely good in what you are doing.comprehensive explanations
Best One !!! To know about motor control
We need more of this guy
outstanding video.. kindly make it clear to me why was the bi metal Circuit breaker removed from the protection ?
afaq shah because the inrush causes heat which would trip the bi metal breaker.
TH3G00DN3WS thnks for ur reply.. but correct me if i am wrong.. these are designed to get tripped if there is in rush currents ?
afaq shah sorry first explanation wasn't correct. Both work via current (amps) but magnet breakers can be built with a relay to allow for the inrush. If current does not drop within relay time then the breaker will trip. Bi metal however is instantaneous and therefore cannot have a built in relay.
TH3G00DN3WS thnks bro
The bi-metallic strip is thin and rated at a constant thermal temp. Overload protections have different amperage rating, are easily replaceable, and are much thicker, which take awhile to heat up. Mind you that now a days you also have electronic overload protection, but i'm speaking of the old heater type overloads. The overload protection has thing metal strips inside with insulating pads between them, connected to a block of solder type metal which melts at a specific temperature, which has a ratcheting pawl molded in, once the metal reaches a certain temp it melts and lets the pawl spin, which activates the tripping lever, which is normally is just connected to a NC toggle switch on the side which cuts the voltage to the relay coil.
Very clear,insightful and well explained✊❤️
This video was amazing - I don’t even work with motors at my job!
Very detailed but yet simple and comprehensible video! Kudos to you!
does the aux contact and the contactor have a shared bus for control voltage?
No. The Aux contact is mechanically connected to the up/down motion of the contactor armature and is a simple dry contact. So whatever voltage you put into the aux contact, comes out when you open and close it. For safety, the aux contact does have a max voltage rating.
I had alot of confusion when designing a control panel for my homemade outdoor warning siren. This video has done a decent amount of help!
your what
What does the H stand for (HMCP)
I know is motor control protection.
But what is the H stand for?
First off let me say the video was very informative. My question is I have some older Machine tool equipment and would like to upgrade the controller's AKA Lathe, drill press and milling machine ,all 3 phase that I run on a 3 phase converter.
This is absolutely perfect! Easy to understand and not overly complicated :)
Thankyou
hi, i have a 3 leads 480v 3 phase motor. it's being used on a rooftop furnace to heat a furniture store. the furnace has 3 fuses, but 2 are burnt out. i replaced the fuses and they burned out again. i then checked the blower motor. the ground test shows OL readings on multimeter (so that's ok). but the resistance test from phase to phase was NOT. only one has about 5ohm reading while the other two has OL reading on my multimeter. does this mean 100% the motor is bad? thank you for your help.
Holy shit I wish I saw this video before I was working on assembly of electronic frequency converter cabinets. I'm an electric engineering student, so I have knowledge of even the fine details of electronics but we were never told anything about contactors really, so I was pretty much in the dark when it comes to those. Now I understand perfectly how these contactors work and props for explaining the aux contactors as well. This video just puts so many pieces of the puzzle together for me!
I’m amazed on how many electrical engineers aren’t taught the basics in motor controls and components.. good luck and keep learning buddy
@@gregpartain4307 it is astonishing, i did 3 years of my EE degree and went to work sales at an electrical distributor where they hoped I would be useful in pushing automation controls/products. Funny, you get there and I can do math and draw how this all works on paper no problem, but when you tell me what motor youre running and I need to build a quote for what size box you need depending on several factors, what contactor depending on iec or nema, amperage based on HP, etc, the overload you need, do you want an mpcb or not or will it benefit you in your case. on and on, i need a start stop, along the line i need sensors for this application and these length cables etc etc etc
i learned so fast that EE taught alot, but reality came with hard-wired devices, it comes with costs, risks. It comes with understanding the engineer and working with the electrician. Sales gave me alot of insight and meanwhile connections to a ton of local customers and industries.
I stll enjoy videos like these because so many EE majors, or new salesman, NEED to learn these asap to move on quickly. I can teach others better when these guys can break it down so simply. I remember asking an EE major to draw me a holding circuit for a motor or whatever, simple momentary start/stop + contactor + relay and they draw a circuit that would you add the prices of what each thing costs, they are putting the highest priced item (ie motor) at the highest risk possible. Realistically stupid, but yet it tech would work.
This is the most basic form of control. Yes a set of normally open Auxiliary contacts mounted on the side of this contact can prove a call for the motor by sending power to a light indicating it is pulled in.Also the 2nd set of auxiliary contacts behind the first using a normally closed set can have a light wired to it and the light is showing a status of Standby which means i'm ready to run by the light being lit up when the contractor is not engaged. Then the contractor closes which opens the normally closed auxiliary contact turning the light off which indicates the motor is being told to run and no longer in standby by mode. It doesn't prove the motor is running, it just proves it's being told to run. Proving the motor is running would require a CT. A CT measure amperage as it is wrapped around one of the power legs to the motor. If the motor contact engages and power is present the motor is now under a load and will pull amps as a result of powering the motor and the CT reads the amperage and a circuit board the the CT is terminated to it sends power to a digital output that can send 24 12 or 110 volts to a light indicating it is under a load, although if it is an air moving motor it still doesn't prove air is being moved, you may have a powered motor but a broken belt, thus it is powered but not moving air, the way to prove it 100% is to mount an air pressure switch with a tube in the air stream that measure air pressure, if it sense's air movement and closes a normally set of open contacts with power on one side to close, that in turn can send a signal back to the control board with voltage now passing through the air pressure switch to a digital input of the board thus proves your motor has power but also is under a load and with the air proving switch, proves it is in fact working moving air. Hope this helps.
Great Video. Just a question: Are the magnetic and thermal overcurrent protections in HMCP only? And Thermal and overcurrent overloads are different?
Cant find HMCB where am now , Can you tell me what best protection device ( ELCB - MCB - RCD - CB ) should be placed before 3 phase ( 2.1 kw ) grinder to use it saftey in a home ? To protect phases from if touched and to protect myself from machine . By the way the grinder already have contactor and on/off button only .
Please make more videos! This was awesome
I just want to applaud you for making this topic very simple
I have a 230v contractor 2 outputs. It’s a bch8-40 well I couldn’t find anywhere where I could see what to hook to a1 and a2. I found out I have to put 220v. Basically 110v leg a on one side a1 and 110v leg b on the other side a2. Why is there no good drawings of this! All I could find was to put 110v on a1 and neutral on a2 which doesn’t work!
very good...I did not learn in this video...i already know all off this...I just watch and make sure my knowledge about all of this is correct...and yes.im right? good explanation very clear..love your videos.this is useful for the begginers...but guys be careful...always double check your connections before energized your work of arts.. 👋👋👋
Just found this video, very informative. Thank you, keep the great work
Wired a lot of CH & Tele. motor controls. Not a fan of AB tho...
Remember those old ceramic heating elements you had to dig out after a fault?
really good video to simplify motor controls
imagine watching videos like this for entertainment
loving the concepts
going to school and learning it further
and then filling out hundreds of applications and getting told no every...single...time....
Not sure why this video was suggested, however a great video on motor control. You did miss one item on thermal overloads the old SQUARE D. These used a lead composite that unlocked a ratchet component to unlatch the circuit. Soooo old school but unfortunately they are still out there.
To the point and clear explaination .Thanks for sharing.
Fantastic, thank you sir for this awesome video. I learned so much.Please continue these videos ,I'll be grabbing my popcorn and enjoying everyone of your videos .
Where does the control power come from? Do I have to have a seperate single phase cable just to power the contactor?
the control power or what is called control signal usually come from control system like PLC or DCS or any automation system
Where is the power to your switch coming from???
So I have got this Contactor for free, but how do I wire it up? The text on it doesn't make any sense to the relais schematics and such I can find. So how do I wire this up?
It should be intuitively obvious to the most casual observer after watching this video.
Whomever manages this website for these Eaton Videos, needs to do the site and us all a favor and put all these explanation videos done by this guy explaining this and these types of videos into a separate playlist for the video so they can be easy to find and watch. There are so so many videos from Eaton that it’s damn hard to find these kind of really super useful training videos and explained by this guy in the video. Someone please do us all a favor and make a separate video playlist for these super helpful videos. I learned so damn much watching this video that I wish all the videos done and explained by this guy was in a separate video playlist so I could watch them all and learn.
Well done wish I had this 10 years ago
Pretty much summed up my first semester of motor control in 16 minutes!
Matthew Elizarraras hi matthew ur from which university and place?..
Pls. Link second semester info videos thanks
Best explanation I've saw,really clear and straight to the point...👍👍
my brain Hertz
Dont worry its just a cycle
Haha hertz
Meditate like a monk "oooooohhhmmmm"
@@dustinmaurice407 Oh my god those puns are good.
Just eat some PIE 🥧
Wonderful video! Very easy to understand. I don't subscribe to many channels but I subbed to this one. Thanks for posting!
This was the best informative video on this subjects .
Very nice and clear way of explaining step-by-step at an asset level application. Thanks
Well done- clear, concise, understandable.
Doesn't the current "spike" at the start of a motor depend on a delta- connected motor vs star (or "wye")- connected? 🤔
Would the overload relay typically be installed in the motor, or would it be something you install yourself?
Some motors come with internal thermal overloads from the factory. All depends on the manufacturer.
This is one of the best videos I have seen. The explanation in the video is superb! Thank you.
Very well done and comprehensible.
11:37 : you told at full speed OR at full load. the full speed is when there is no load on the motor and your speed will drop when you load your motor.
He prolly meant full load speed not full speed unloaded bro
Excellent presentation about motor control and protection concepts from beginner to intermediate level including applications.
Highly recommended for professionals for a refresher lesson in motor protection.
please explain what is the difference between an armature and a relay???
both a relay and a contactor have an armature.. they operate on the same principle and a contactor is basically a high voltage relay.; Both use a low voltage coil to move an armature that engages a set of contacts. but the difference is that an armature is only a component of a relay.
thanks!!
I am majoring in Industrial Electronics. Currently taking Motor controls and DC/AC machine theory this semester. This video was very helpful in my studies.
My electric motors teacher mr.thornton is a great teacher though I like to see these videos....this is extremely helpful broken down in great detail...thanks
Tell Mr.thornton he is lucky to have a student like you..☺️
15:59 Well done sir please come with a lot motors and controls
Did this change? It looks/soudns different?
Best explanation ever, now I understand motor starter👏👏👏👏👏👏
I learned a lot. Please have more videos. It's very helpful.
That was an excellent explanation
God that auxiliary contact thing is such a weird size? It’s tripping me out. Love this vid
great vid, however at 13:50, the abbreviation gets cut off at the bottom, so beware of that
where did you connect the light indicator?
To the aux contacts.
Outstanding videos!
Whoah, Really awesome and simple video to understand, I will surely check out your other videos.
What an awesome explanation, clear, to the point, perfect, thanks so much!💯🥊
Thanks for the clear explanation! Just what I needed
Is this part of a series of videos by chance? This one was excellent.
Thanks for your video. Really learned a lot from it.
I have been teaching myself plc controls and 3 min in the video I could tie this to basic plc ladder logic
Im using a water pump with pump switch(contactors) via pressure tank guage. My problem is when motor cant seem to pump water then motor will suicide run. I was thinking of a controller time based meaning with clock a system which cuts of power after running 7min and must be manually turned back on.
Amazing, this is the best explanation i saw so far..............Thank you....