Az ilyen átkötés nagyon nagy teljesítmény csökkenést okoz! Egyik szerkezet sem fog megfelelően üzemelni ami 3 fázisra lett tervezve. Ehhez kell egy megfelelő nagyságú frekvencia generátor ami 1fázis->3fázis üzemet tud! Ez így a 60-as évek buherációja!
Commercially branded phase converters are available. Matching them up to the motor and wiring them up correctly is the key to getting the proper phase alignment. No loose capacitors hanging out, everything in a nice safe metal cabinet. NEC compliant.
Kinda easy to build. Never did anything like that before and I found d I instructions on the net...found a used 3 phase 7 hp motor for a hundred bucks, bought $50 worth of caps at a freght salvage, spent 4-5 hrs wiring and put it in a box...used it 2+ years on a 5hp lathe..it ran all day...got kind da lucky first try, 3 legs were within 4 volts...to buy the same deal cost a thou or more
Some countries, the authorities switch off one of the 3 phases, so that 3 phase motor loads should not work during peak hours (6pm to 10pm). With a brief shutdown the phases from L1, L2, L3 becomes L1, L2, L2 at 6pm and after another brief shutdown at 10pm again becomes L1. L2, L3. Some used to connect a capacitor (10mfd per amp and 20% above supply voltage rating) as in the video and run it during the peak hours. Heavier loads are started with additional capacitor with a push button to start. Regards.
What is the formula to figure what capacitor to use and will it last as long a cycle as the motor running on 3 phase? I usually have to use a vfd in the situation.
Yes correct, it will turn the motor but, you will only be able to drive a very light load. There is very little torque. There are only two ways to solve the problem; 1, buy a single phase motor or 2, buy a variable frequency drive.
Hi i want to ask something. After u run the motor for 2-3 minutes, do u realize about the motor is become hot easily? I check the amp, i got quite high amp (5A) after run using this connection. And 1 more thing, i actually want to convert the panasonic inverter washing machine to using universal board (no need to replace original 3 phase motor if using this trick). But i have a problem that, while in wash mode, the motor only run in one direction only (usually running in two direction on off, in wash mode). Can u help me if u have any idea. Tq.
How does this work? Well in delta connection, the paticular winding paralleled with power has rated voltage on it. but one winding can't provide rotating megnetic field to start the motor, so with a capacitor in series with the other two windings the current in these windings has a phase difference, which produces a phase-shifted magnetic flux. When this magnetic flux gets mixed with the oroginal magnetic flux generated by the power-line-paralleled winding, a rotating magnetic field appears in the rotor, which gives starting torque. For this part you can refer to why single phase motors need a capacitor. Due to winding current limitation, the motor can only provide about 1/3 of the original rated power. I'm not a pro but this explains things fine to me. Accroding to experiences 20-30uF for every kW is useable, the guideline is to ensure that no winding is overloading by monitoring phase current. Remember to only use non-polarized capacitor such as oil-paper capacitor or metal-film capacitor, do not use electrolytic capacitors or any polarized capacitors for the risk of cap explosion and fire., and the capacitor used should have a voltage rating no less than the power voltage.
Why are you saying 1/3 of power - the voltage is the same as in three phase you only pull 3 times more current in one cable in source and that can work if you just use thicker wires
@@shadowwalker4633 The problem is inside the motor, stator windings are designed to run at 3 phase. If you run it at single phase but still want full rated output power, it's for sure that phase will get overloaded. Current is limited by the motor instead of supply wirings.
@@TheBalconyWorkspace i found out its rlly 1/3 of power but its not cuz of current limitation current is same but the problem is the shift is only 90 degrees so you losing a whole 90 degrees between phases in the rotation process compared to normal three phase- the amount of current is same if voltage is same since resistance is fixed bro
By far the best way to do this in modern times is to purchase a variable frequency drive with single phase input. This phase converter stuff was great for 100 years until VFDs became available.
@@ieatramenwithrice a plain one with few features doesn't cost much more than the capacitors and contactors needed for a phase converter. If there is a need for much starting torque, then an "idler motor" is needed. Costs could easily be more than the VFD. And if you need speed control or a specific acceleration profile, forget it.
rotary phase converters are still great if you need to run large 30hp motors or multiple smaller motors at once. This is a good entry level project before building a rotary. Or a good way to test a motor at home.
You need to change resistances so the coils will draw the same power they need in 220V - for example if the current in 380 Volts was 10 amps the resistance 38ohm in 220 Volts you would need a 22 ohm resistance for the same current so you ll have to achieve a lower resistance but that would need some work inside and you need very good calculation - even while having made the same current you ll have less power since its obviously 220V
Note -90 degree shift not 120 so only works on small loads, the shift ll change line to line voltage so you would need a phase with 162.6 V for that 230V line to line and that ll make this pretty useless overall you would rather use a single phase and convert it to dc and you convert that to three phase balanced AC
Can some one explain me why peopel back in the days wound coils on brushes and commitators ??? I see some patents online they have strange coils wound close to brushes for what are they used for exactly are those inductors for speed control???
If VFD's are out of your 'price or availability range', depending on motor size; the best way is to simply build a rotary phase converter using a similar-sized single-phase motor...no (minimal) torque loss that way.
Please help me ..what capacitor i need in this 3 phase motor..to 220v single phase. Motot specs.. Y delta 346-480/200-280volts. 1.40/2.45 A Cos♤ 0.84. 0.55 kw. 3400 1/min. 60Hz Please what exsact running capacitor i need. Thanks
I dont know how to calculate but from experiences a 450VAC nonpolarized capacitor with 20microfarad capacitance should do the job, btw this makeshift can only provide 1/3 of the rated power.
Maybe one of you clever people can help. I have a Northern Lights 25kW generator and I planned to run a 3-phase 240v 20kW induction motor from it. The documentation I had said my generator was 3-phase but I just found out it's actually a single-phase output!! Damn. Any ideas how I can connect that to the motor and still run it at about 20kW of power?
25 kW generator with single phase output , serious problem for you dear. If your actual output load is about 5kw , you can use single phase input frequency inverter to give you 3 phase output.
It was counterclockwise first, then clockwise 2nd that's why the rotation was faster at last minute of video careful with tips man,good video though,thanks
Single phase motor using capacitor couple of seconds just for motor starting up only . So ... 3 phase motor depending capacitor constantly supply power for running not for working ! Isn't it ? How about tork ? Is this reliable and capacitor will generate heat and exploded in couples of minutes ...
Sir what capacitor fits 3 hp motor? Sir 1 more question, if my motor is 3 HP , will it retain its power if I use capacitor to run it in a single phase power?
This method can run 3 phase motor but cannot give the maximum performance of the motor,why we need to practiced this? best way is to buy a motor in accordance to the available power supply.
Just go and buy a Variable Frequency Drive of double the amps /ampacity rating of the motor. This capacitor thing is only a quick check and test for a motor with no load attached, and usually the motor will not have the rated horsepower, unlike with a VFD that has true three phase driven by power fets from it's DC bus. Needless to say, with a VFD the consumption and amperage required will be higher.
A version off of TH-cam that isn't a half hour long! Thank you :)
السلام عليكم.
مهندس عليوي انت فعلا مثال للمهندس الرائع.
تسلم ايدك وربنا يبارك فيك و في زريتك و يحفظك
I’ve Done this a lot and works well on most motors, obviously you won’t get same torque but for certain
Machines you can get away with it
Hello brother please can it work on 5hp motor? If yes for how many hours will it work a day?
Az ilyen átkötés nagyon nagy teljesítmény csökkenést okoz! Egyik szerkezet sem fog megfelelően üzemelni ami 3 fázisra lett tervezve. Ehhez kell egy megfelelő nagyságú frekvencia generátor ami 1fázis->3fázis üzemet tud! Ez így a 60-as évek buherációja!
Commercially branded phase converters are available. Matching them up to the motor and wiring them up correctly is the key to getting the proper phase alignment. No loose capacitors hanging out, everything in a nice safe metal cabinet. NEC compliant.
Kinda easy to build. Never did anything like that before and I found d I instructions on the net...found a used 3 phase 7 hp motor for a hundred bucks, bought $50 worth of caps at a freght salvage, spent 4-5 hrs wiring and put it in a box...used it 2+ years on a 5hp lathe..it ran all day...got kind da lucky first try, 3 legs were within 4 volts...to buy the same deal cost a thou or more
Never mind those a welder with a 415 wining and a motor twice the size you want to run will give you a converter
@@blackbirdxx928 could you please share details like the capacitor values and your connections. I could use your experience now pls.
Some countries, the authorities switch off one of the 3 phases, so that 3 phase motor loads should not work during peak hours (6pm to 10pm). With a brief shutdown the phases from L1, L2, L3 becomes L1, L2, L2 at 6pm and after another brief shutdown at 10pm again becomes L1. L2, L3. Some used to connect a capacitor (10mfd per amp and 20% above supply voltage rating) as in the video and run it during the peak hours. Heavier loads are started with additional capacitor with a push button to start. Regards.
@@rupert5390
Can u explain?
What about the torque when we do this?
What torque?
There is none this guy is full of crap
What is the formula to figure what capacitor to use and will it last as long a cycle as the motor running on 3 phase? I usually have to use a vfd in the situation.
How did you calculate the capacitor value you connected
A kw of motor per 70micro farad's, I don't know how
@@osutakizito2688 if supply is 220 V then we use 70uf capacitor per KV,
Very informative. I liked ..the best so far explanation.
I have to hook up a 3 phase air compressor to a 2 phase service.
I want to learning about the best way of electrical systems for home use program 👍👍👍
note there is no EARTH wire used on this motor , if you wire up any motor make sure a fully earthed cable connected to the frame of the motor.
how would it be operating without one?
How do you convert a 9-lead wire dual voltage 3 phase motor to single phase? I do not see any information or videos on this.
How do you know the right specification for the capacitor thank you!
Do you need motor starters like DOL, stardelta o you just connect it direct to single phase
voltage rating for capacitor should be 250 or 400v?
Submersible bhi Chala saktey h Kya ?
Yes correct, it will turn the motor but, you will only be able to drive a very light load. There is very little torque. There are only two ways to solve the problem; 1, buy a single phase motor or 2, buy a variable frequency drive.
It's only idea ... capacitor will only shift phase 120 degree ... vfd is a perfect option
Good and perfect thanks
Syscap is best capacitor brand in India. World class quality.
Is this 220v euro . 1 leg 220v?
Not 220v 2 wire . USA?
Hi bro 3phase 3hp motor h.... Capacitor ka nam batao konsa use kru and run hogina motor??
Hi i want to ask something. After u run the motor for 2-3 minutes, do u realize about the motor is become hot easily? I check the amp, i got quite high amp (5A) after run using this connection. And 1 more thing, i actually want to convert the panasonic inverter washing machine to using universal board (no need to replace original 3 phase motor if using this trick). But i have a problem that, while in wash mode, the motor only run in one direction only (usually running in two direction on off, in wash mode). Can u help me if u have any idea. Tq.
You can use a single phase input , three phase output, can connect reverse and forward signals from the universal board to inverter
Can't see capacitor specifications? Can you write them in comment, please?
How does this work?
Well in delta connection, the paticular winding paralleled with power has rated voltage on it. but one winding can't provide rotating megnetic field to start the motor, so with a capacitor in series with the other two windings the current in these windings has a phase difference, which produces a phase-shifted magnetic flux. When this magnetic flux gets mixed with the oroginal magnetic flux generated by the power-line-paralleled winding, a rotating magnetic field appears in the rotor, which gives starting torque. For this part you can refer to why single phase motors need a capacitor. Due to winding current limitation, the motor can only provide about 1/3 of the original rated power.
I'm not a pro but this explains things fine to me.
Accroding to experiences 20-30uF for every kW is useable, the guideline is to ensure that no winding is overloading by monitoring phase current.
Remember to only use non-polarized capacitor such as oil-paper capacitor or metal-film capacitor, do not use electrolytic capacitors or any polarized capacitors for the risk of cap explosion and fire., and the capacitor used should have a voltage rating no less than the power voltage.
Why are you saying 1/3 of power - the voltage is the same as in three phase you only pull 3 times more current in one cable in source and that can work if you just use thicker wires
@@shadowwalker4633 The problem is inside the motor, stator windings are designed to run at 3 phase. If you run it at single phase but still want full rated output power, it's for sure that phase will get overloaded. Current is limited by the motor instead of supply wirings.
@@TheBalconyWorkspace i found out its rlly 1/3 of power but its not cuz of current limitation current is same but the problem is the shift is only 90 degrees so you losing a whole 90 degrees between phases in the rotation process compared to normal three phase- the amount of current is same if voltage is same since resistance is fixed bro
@@shadowwalker4633 Thanks dude，I've learned something new
Cheers!
Is it going to work for 3HP submersible pump?
No dear only below one hp
@@EASYPLCTRAINING Thanks for your prompt reply 🙂🙂🙂
No
Rpm any changes
Peoples usingthis 50 hp submersible motors@@EASYPLCTRAINING
By far the best way to do this in modern times is to purchase a variable frequency drive with single phase input. This phase converter stuff was great for 100 years until VFDs became available.
not everyone need or can afford a VFD
@@ieatramenwithrice a plain one with few features doesn't cost much more than the capacitors and contactors needed for a phase converter. If there is a need for much starting torque, then an "idler motor" is needed. Costs could easily be more than the VFD. And if you need speed control or a specific acceleration profile, forget it.
@@ieatramenwithrice VFDs are stupid cheap these days. You may not need all the features but it will last longer than this cobble job.
rotary phase converters are still great if you need to run large 30hp motors or multiple smaller motors at once. This is a good entry level project before building a rotary. Or a good way to test a motor at home.
Yes. I prefer to use single phase input to 3 phase output VFD. Motor performance much better.
Is the horsepower still the same when we use single phase isntead of the 3phase.?
No , you lose alot of torque and speed
Hi...I have a 380v sewing machine clutch motor... I need to convert it to 220v...can you assist. thank you.
You need to change resistances so the coils will draw the same power they need in 220V - for example if the current in 380 Volts was 10 amps the resistance 38ohm in 220 Volts you would need a 22 ohm resistance for the same current so you ll have to achieve a lower resistance but that would need some work inside and you need very good calculation - even while having made the same current you ll have less power since its obviously 220V
Can i ask you a question how you calculate the amount of capacitor to be use if the hp is higher or lower hp
70ųf per 1 kw of motor power
10 MFD will work in any KW?
Reply to ?
1.5kw
I believe the capacitive reactance must be as close as possible to the values of motor winding ohms resistance
Then we can obtain C, Rw=1/(2πfc), where Rw= motor winding resistance, and C is capacitance, f= source frequency, π=pi.
Note -90 degree shift not 120 so only works on small loads, the shift ll change line to line voltage so you would need a phase with 162.6 V for that 230V line to line and that ll make this pretty useless overall you would rather use a single phase and convert it to dc and you convert that to three phase balanced AC
Sir, How can we calculate capacitor rating
Can some one explain me why peopel back in the days wound coils on brushes and commitators ???
I see some patents online they have strange coils wound close to brushes for what are they used for exactly are those inductors for speed control???
If VFD's are out of your 'price or availability range', depending on motor size; the best way is to simply build a rotary phase converter using a similar-sized single-phase motor...no (minimal) torque loss that way.
Can i use this method for for long time/ permanently
Does After long time the winding will burn ?
Less than 1 hp no problem
@@EASYPLCTRAINING thanks for replying sir
@@EASYPLCTRAINING what about torque?
Yes this is crap
how to calculate the capacitor for each power "KW " motor
8uF per 100W...
Sir I have 3kw motor wye connection , 3 phase how much capacitor do I install to run the motor.
3kw not possible. Only around 1hp
Thanks that's amazing great video channel I like this post nice ideas
How many hours can be run with capacitor
Can i use 20mfd capacitor? Same motor rating
Can use , but check if motor start to heat up ?
I need the science behind any 'trick'.
David Lixenberg
Please help me ..what capacitor i need in this 3 phase motor..to 220v single phase.
Motot specs..
Y delta 346-480/200-280volts. 1.40/2.45 A
Cos♤ 0.84. 0.55 kw. 3400 1/min. 60Hz
Please what exsact running capacitor i need. Thanks
I dont know how to calculate but from experiences a 450VAC nonpolarized capacitor with 20microfarad capacitance should do the job, btw this makeshift can only provide 1/3 of the rated power.
What would happen if it’s done without the capacitor? Will it burn?
Yes
What causes a hammer mill produce sound?
Hi 4kw compressor 3 phrase to single phrase need to use which capacitor size?
4kw not possible to run , only upto 1 HP
@@EASYPLCTRAINING why is it not possible? Can't I just use higher capacitor? maybe 280 uF?
i heard that its danger to running the 3 phase motor with capasitor?
Can you do this on a 3 phase soft serve ice cream machine so it will run on single phased
What is the voltage rating of your motor in delta and star ?
Can we use same star connection also?
You need 400 Volts in this motor for star so it already needs a 3 phase level of voltage so there is no point -
hi，a 3 phase 3kw motors for run in single phase is the same connection than the small 3 phase motors？
Up to 1 kw only dear
@@EASYPLCTRAINING OK，but the problem of the biggest motors i hear they need use two different capacitors so that they run well.
up to 1.5kw need use two differents capacitors.
for example 2.2kw，3kw，4kw，4.5kw 5.5kw motors.
Kitne hp ki moter h ye
Kya 10 hp motr aata cki yali kamyab he
How much time we run 3hp motor
Maybe one of you clever people can help. I have a Northern Lights 25kW generator and I planned to run a 3-phase 240v 20kW induction motor from it. The documentation I had said my generator was 3-phase but I just found out it's actually a single-phase output!! Damn. Any ideas how I can connect that to the motor and still run it at about 20kW of power?
25 kW generator with single phase output , serious problem for you dear.
If your actual output load is about 5kw , you can use single phase input frequency inverter to give you 3 phase output.
@@EASYPLCTRAINING The actual power output needed is about 20kW. The generator is rated for 25kW.
My friend you need three phase generator output.
sir How much HP of this motor?
Excellent job keeptup
How much uf?
10
Sir amar 3 phase 20 hp motor k.. Single phase kore rise mill r jonno chala tey parbo plz sir janaben...
Yes issue ho ga
Does this machine work with single like three phase?
It's power i mean...
No it won't have as much power or torque use a 240v single phase to 240v 3 phase inverter
A great information thanks
what is the capacitnce value you put on
and what is voltge
It was counterclockwise first, then clockwise 2nd that's why the rotation was faster at last minute of video careful with tips man,good video though,thanks
Motor kW ?
mana spek motornya ,kan berhubungan kw dan mfd kapasitornya,kalau g pas amper akan naik dan motor panas
Three pesh 20 hp pump, single pesh me kese chalaye
Eske upar video banao
20 hp not possible
@@EASYPLCTRAINING kiyo Bhai
Single pesh se 20 hp motor pump nahi chalta Kiya ?
@@krishnapatelpatel7459 nahi, itni starting torque produce nahi kar payega.
Rightly said
Single phase motor using capacitor couple of seconds just for motor starting up only . So ... 3 phase motor depending capacitor constantly supply power for running not for working ! Isn't it ? How about tork ? Is this reliable and capacitor will generate heat and exploded in couples of minutes ...
What is the maximum size of 3phase motor that can be run by single phase
1 hp
How do I size the capacitor? Or why that particular rating capacitor?
That looks really good but why not just get a phase simulator and use it then your motor will operate properly
Sir what capacitor fits 3 hp motor? Sir 1 more question, if my motor is 3 HP , will it retain its power if I use capacitor to run it in a single phase power?
Sir, is capacitor voltage rating 230v or 440v?..
On a 220/240vac single phase system you would us a 440v capacitor note you would only use this for small 3 phase motors
3hp ok na
If converting 3phase machine in single phase then motor power increase or decrease karna chahiye.
sir may i know what is the voltage rating of the capacitor
Just make sure the rating of the capacitor is higher than the motor rating.
thank you for that sharing sir.
Super bro thanks 👍
How about the reverse?
see the video at 1:47 time
Perfect @@EASYPLCTRAINING
Please sirr help me my problem three face brack to single face
Three phase input transformer to single phase output
How can I found cap value
What is the drawback of this method??
The main drawback of the "Steinmetz connection" is less starting torque.
Secondly, for larger motors the capacitor will be quite expensive.
Cool video, keep it up,thanks :)
It's useless. Because it will not take any load.it will run with out load only.
Yes
Good explanation
Can we run 11kw 3phase motor using this method?
No .... this is only for small motors
@@EASYPLCTRAINING can we run 3kw 3phase motor using this method
Good information Sir, Can we run the motor maximum speed with this method!!
Yes
@@EASYPLCTRAINING tqq for your reply Sir.👍
How to convert three phase to single phase?
This method can run 3 phase motor but cannot give the maximum performance of the motor,why we need to practiced this? best way is to buy a motor in accordance to the available power supply.
Yes,it turns,but totally out of specification
Clockwise direction.
Just go and buy a Variable Frequency Drive of double the amps /ampacity rating of the motor. This capacitor thing is only a quick check and test for a motor with no load attached, and usually the motor will not have the rated horsepower, unlike with a VFD that has true three phase driven by power fets from it's DC bus. Needless to say, with a VFD the consumption and amperage required will be higher.
How do you know
What size of capicator to used for what size of motor
this is how aircon compressor works
But y rpm is low?
Thanks you sir
who thinks this would be suitable for a 2 ton shop hoist?? Dayton 3phase
I think this hack is for low power applications only(?)
Yes , only less than 0.5 KW
Thanks for sharing it
Get a schneider inverter/speed control
Yes, the motor turns but will have limited torque/power and will be virtually useless.
Thanks for sharing
Nice
Super
Very good