Yes, a small control current does directly power the coil and energizes the electromagnet. This is typically supplied from another power source such as a control transformer, power supply, etc...
Hi Faizan, Softstarters are made for any HP, and the larger the HP the larger the SS and more the more expensive it is, too. Dol and star delta are different wiring configurations used when line starting large motors. When connected to a Softstarter, we want them connected star or delta but left that way.
I need an emergency temperature cutoff switch for a Bitcoin mining machine. What type of switch would I need for 240v 20 a? I assume I would need some sort of thermostat thing that would trip the switch, but not really sure what arrangement I would need. Please help, thanks!
Love the cut away - picture is worth a thousand words. Audio clarity was excellent, her speech clear, precise, and statements well timed. Always good for relearning where you have to do with multi-disciplined projects. My only suggestion for improvement: add a few callouts to your first stationary image. Some of us feed on nomenclature!
Hein, We hope to make videos explaining both, but as of now the only videos we have on the subject manner are product specific videos. Some of them have some good information and can further help you out with overload relays and protection relays. Just click on the search icon in our main channel page (click on G-TV to the left) and do a search for "protection relay" or "overload relay". I hope this helps.
Very good question, functionally they are identical. However a contactor has much higher current capacity then its relay counter part. For example, relays will usually only be rated to 10-20amp contacts. Contactors will be rated to hundreds or even thousands of amps of current capacity through it's main contacts. Both relays and contactors will have coil curcuits rated at 24Vdc, 48Vdc, 110Vdc or ac, 240/480Vac. The only real difference in the coils them selves is the size of them to actuate heavy contacts in contactors or a much smaller coil to activate a relay contact.
I use 5 kva contactor in free energy overunity devices because cont have one n half kg weight to lift n no amps I use ten of them in my t magnetic n magnetic contactor engine ten con amps .4 or .3 now u can move any power full engine who gives u 7 to 9 amps 24h input .3 amps output 9 amps so this nine amps is not free .......
I had the run capacitor tested. It was running at about the voltage it should. I replaced it. The symptoms did not. Change. Not sure what you mean about delay system. Symptoms are the same whether it has been on for a long time or whether it has been off for a 12 hours. There is a little circuit board a out 4inches squared connected to the contactor. Could that be the relay system?
Hi Rigel, Our best guess in this situation is that there is most likely an issue with your compressor, which generally requires work from an HVAC professional.
You could break 2 of the three poles and equipment would stop, but is not safe to leave power connected to any phases. Is always better to break/disconnect all 3 phases every time you want to stop power, ok?
My ac contactor was visibly burnt. I replaced it. It worked great for a day. Then it stopped working with same symptoms (wont start). Any ideas anybody?
Hi Rigel, To determine what the problem could be, we should determine if it was the coil that failed or the contacts. If it was the coil, you will want to check the control voltage supplied and make sure the replacement was ordered correctly. If it was the contacts, then we recommend that you check the load for shorts or bad wiring, and also the line feeding it with power should be checked for correct and balanced voltage. I hope this helps get you on the right track.
I checked across both the incoming power and its getting around 246. When the unit is trying to cool the house the terminal that goes to the compressor is arcing. This is the same terminal that burnt out on the old contactor.
Hey Rigel, is this for a home AC unit? If so, it must be a single phase motor in the compressor, and because it is a single phase motor it must have a starting capacitor connected to the “Shaded pole” of the motor that makes it start rotating the same direction each time it turns on. If this capacitor has failed the motor could start in the wrong direction possibly causing this problem, another possibility is the restart delay timer. If the AC system doesn’t have enough time in the off state before restarting, the compressor will lock up from a lack of break away torque. This is common to ALL home AC systems and Refrigerators and Freezers too. You may be best off contacting a heating and cooling service to take a look at your unit, as DIY repairs on these units can be difficult.
You shouldn't need both. You will need a contactor with a motor protection circuit breaker (MPCB) or an overload relay (OLR). The preference between the OLR and MPCB could be the tripping unit needed to close the switch, real estate available, method of control, or cost. It would be a little redundant to have both of these on one contactor.
robviolin1 You would have to look at the contactor specs to see what the peak interrupting current is. Typically it is 150% of the continuous current rating, in which case I would suggest a contactor with a continuous rating of .66 times 500 amps, about 334 amps.
robviolin1 Sure thing. In the example I gave you I have a contactor with a peak rating of 500 amps. In this particular case I am using an ABB contactor as an example. The manufacturer has peak ratings 150% of the continuous. Since 100% is 2/3rd of 150%, I can multiply the peak rating by 2/3rd (.66) to find the contactor rating of 334 Amps. I would then round up to the nearest contactor size. This contactor would be able to handle the continuous rating of 200 amps and the maximum of 500 amps. Contactor manufacturers should list a peak interrupting capacity and since your motor can reach a 500 amp maximum, then you will need to size it base on the maximum.
So what you are saying is to find the correct contactor soleniod for a DC motor, you take the peak of the dc motor which is 500 amps times 2/3 or .66 to get the contactor needed for the motor. It this what you are saying?
Heyyyy youuuu , thanks 😊😉❤️❣️
Yes, a small control current does directly power the coil and energizes the electromagnet. This is typically supplied from another power source such as a control transformer, power supply, etc...
How to calculate the value of resistor and capacitor (Snubber Circuit) that we connect across the the coil of contactors (A1 and A2) .....?
HB
what is over load
How the coil energize
dear galco team kindly tell me that upto what HP ratings we can use softstarter,dol and star delta....
Hi Faizan,
Softstarters are made for any HP, and the larger the HP the larger the SS and more the more expensive it is, too. Dol and star delta are different wiring configurations used when line starting large motors. When connected to a Softstarter, we want them connected star or delta but left that way.
for example if my motor rating is 430hp which motor starter i will use...
what's the application voltage?
Can we Use t shape relay 30A for controlling 1 hp water pump or should I use contactors
Does the pump have built in OL protection?
A 30 amp relay will probably be fine to start a 1HP motor, even at 115volt, assuming you are using standard residential house current.
230v 1hp motor pump
Supply is connected directly to the motor does not have starter
Then how are you using the relay to control this motor?
lovely girl, more attractive than the contactor
that is why they use her. They know the thirst is real
Puny human!
My only true love is the even and uniform distribution of electrons 8====D~~~~ ;D
Why is contactor used in split Ac?
Not sure what you are asking, can you rephrase your question?
Thanks for saving me from hindi videos 😭😑
Thank you nossub for answering Jomon's question. I didn't get the chance to see it until just now.
Great video. Thanks for sharing your talents on TH-cam.
Thank you Miss. Katie Rydzewski for excellent presentation.
Thanks, replacing contactor for the first time part of my air compressor wanted to know how it really works. Great explanation with visual, love it
I need an emergency temperature cutoff switch for a Bitcoin mining machine. What type of switch would I need for 240v 20 a? I assume I would need some sort of thermostat thing that would trip the switch, but not really sure what arrangement I would need. Please help, thanks!
Love the cut away - picture is worth a thousand words. Audio clarity was excellent, her speech clear, precise, and statements well timed. Always good for relearning where you have to do with multi-disciplined projects. My only suggestion for improvement: add a few callouts to your first stationary image. Some of us feed on nomenclature!
thanks for the info..am so weak in electronics....
How do we size the load for the coil?
Hein,
We hope to make videos explaining both, but as of now the only videos we have on the subject manner are product specific videos. Some of them have some good information and can further help you out with overload relays and protection relays. Just click on the search icon in our main channel page (click on G-TV to the left) and do a search for "protection relay" or "overload relay". I hope this helps.
HOW MANY TIMES ARE YOU GOING TO SAY "CONTACTOR"??????????????????
CAAAARN-TACTOR
What is the diference between contactor and relay?
Very good question, functionally they are identical. However a contactor has much higher current capacity then its relay counter part. For example, relays will usually only be rated to 10-20amp contacts. Contactors will be rated to hundreds or even thousands of amps of current capacity through it's main contacts. Both relays and contactors will have coil curcuits rated at 24Vdc, 48Vdc, 110Vdc or ac, 240/480Vac. The only real difference in the coils them selves is the size of them to actuate heavy contacts in contactors or a much smaller coil to activate a relay contact.
GalcoTV exellent! Thanks
And remember, Mrs. Kayla Marie Armstrong, I love you more than anything in the world!
Excellent girl talking something about contactor. Great upload.
THANK U GOD BLESS BEST INFO BEST PRODUCT BEST TITTIES GOD BLESS
I use 5 kva contactor in free energy overunity devices because cont have one n half kg weight to lift n no amps I use ten of them in my t magnetic n magnetic contactor engine ten con amps .4 or .3 now u can move any power full engine who gives u 7 to 9 amps 24h input .3 amps output 9 amps so this nine amps is not free .......
Madam very good tech this concept
I have a question.. How do I know if the coil is good not broken? If it's broken it won't work
Does the small control current directly power the electromagnet? If not, where does the electromagnet obtain power from, another source?
Good video regarding contactor
Good
Thanks👌👌👌
i wish i found videos like this to every of my problems, thanks bb
I had the run capacitor tested. It was running at about the voltage it should. I replaced it. The symptoms did not. Change. Not sure what you mean about delay system. Symptoms are the same whether it has been on for a long time or whether it has been off for a 12 hours. There is a little circuit board a out 4inches squared connected to the contactor. Could that be the relay system?
Hi Rigel,
Our best guess in this situation is that there is most likely an issue with your compressor, which generally requires work from an HVAC professional.
hellow i have a question, is contactor input and out put power are same..what ever Volt we give as input did we got that much as output
Problem in life we want everthing we see nice ...first we wanted a contactor...now we want the lady too...
Very nice 👍
i want to know about overload and phase sequence protection relay. i am really thank to you id you explain it for me
but making to much noice I am busy to soundless that
When doing 3 phase wiring then 3 pole contactor use.. But why?
You could break 2 of the three poles and equipment would stop, but is not safe to leave power connected to any phases. Is always better to break/disconnect all 3 phases every time you want to stop power, ok?
You'r impressive than contactor.
great video
Good explanation
Thanks good explanation
nice one! clear explanation :)
Thank you
Cute engineerette
We think so too
My question is...why isn’t she in the kitchen making me a sandwich?
My ac contactor was visibly burnt. I replaced it. It worked great for a day. Then it stopped working with same symptoms (wont start). Any ideas anybody?
Hi Rigel,
To determine what the problem could be, we should determine if it was the coil that failed or the contacts.
If it was the coil, you will want to check the control voltage supplied and make sure the replacement was ordered correctly. If it was the contacts, then we recommend that you check the load for shorts or bad wiring, and also the line feeding it with power should be checked for correct and balanced voltage.
I hope this helps get you on the right track.
I checked across both the incoming power and its getting around 246. When the unit is trying to cool the house the terminal that goes to the compressor is arcing. This is the same terminal that burnt out on the old contactor.
Hey Rigel, is this for a home AC unit? If so, it must be a single phase motor in the compressor, and because it is a single phase motor it must have a starting capacitor connected to the “Shaded pole” of the motor that makes it start rotating the same direction each time it turns on.
If this capacitor has failed the motor could start in the wrong direction possibly causing this problem, another possibility is the restart delay timer. If the AC system doesn’t have enough time in the off state before restarting, the compressor will lock up from a lack of break away torque. This is common to ALL home AC systems and Refrigerators and Freezers too.
You may be best off contacting a heating and cooling service to take a look at your unit, as DIY repairs on these units can be difficult.
Good
Thanks ma'am
Thanks
Nice mem
Thank u so much
thank's for sharing
thanks
thanks miss
Thanks good explanation
Şakir ne diyem sana mesela Mahmud mu diyem ha şakir
Understand sir?
Yes boy
NICE . I UNTRSTAND
Do you?
@@maxwellbutler4184 lololo
sweet girls like her makes always learning amazing..
Makes it hard to concentrate on what she's saying tho xD
@@ikariosarcturus2660 Me too I couldn't learn anything from this video the girl is too hot I just stared at her the whole time XDDDD
Dammmmmnnnn!
+Bylga Yeah! She's fine asf!
Is she single?
I like your shirt.
what is the difference between mpcb and olr.........why do we use both in motors..........what will happen if only 1 is used out of 2??????
You shouldn't need both. You will need a contactor with a motor protection circuit breaker (MPCB) or an overload relay (OLR). The preference between the OLR and MPCB could be the tripping unit needed to close the switch, real estate available, method of control, or cost. It would be a little redundant to have both of these on one contactor.
olr is used for overload protection and mpcb isused for short cicuit and ground fault protection.....
Great vid and thanks for sharing.
What size contactor soleniod would I use for a DC motor (me-1004)
with 200 amps continuous and 500 amps max?
robviolin1 You would have to look at the contactor specs to see what the peak
interrupting current is. Typically it is 150% of the continuous current
rating, in which case I would suggest a contactor with a continuous rating of .66 times
500 amps, about 334 amps.
I am really sorry, but I don't understand. Could you put this in a more simple way for me to understand.
robviolin1 Sure thing. In the example I gave you I have a contactor with a peak rating of 500 amps. In this particular case I am using an ABB contactor as an example. The manufacturer has peak ratings 150% of the continuous. Since 100% is 2/3rd of 150%, I can multiply the peak rating by 2/3rd (.66) to find the contactor rating of 334 Amps. I would then round up to the nearest contactor size. This contactor would be able to handle the continuous rating of 200 amps and the maximum of 500 amps. Contactor manufacturers should list a peak interrupting capacity and since your motor can reach a 500 amp maximum, then you will need to size it base on the maximum.
So what you are saying is to find the correct contactor soleniod for a DC motor, you take the peak of the dc motor which is 500 amps times 2/3 or .66 to get the contactor needed for the motor.
It this what you are saying?
You have to excuse me. I have a music degree and this electrical stuff is very strange stuff.