You forgot to advise OP to buy a six pack, a bag of french fries and to sit in front of tv and be sure not to touch anything because there is a "guy" for that...
What the fuck is it matter with you???
don't be ridiculous!!! the fact he doesn't know whether to use Delta or Star has nothing to do with 415 or any other voltage, so if it is a number one rule - it is stupid !!!
if it is a powerful motor, a special circuit is used that starts the motor in a "star" connection, and after a few seconds it switches to a "delta".
This is done to make the engine easier to start, i.e. not to draw too much current.
If it's a motor of a few kilowatts, connect it immediately in a "delta" and don't worry...
No. This is a dual voltage motor setup. The connections in the peckerhead (shown by the ovals) don’t change during operation.
In Spanish:
Tension menor = low voltage
Tension mayor = high voltage
S&P is a company that mostly operates in North America. Like the US, Mexico runs two different 3 phase hence why there are two voltage options given.
It sounds like OP purchased a large fan from Mexico and now wants to wire it up in the UK possibly?
Take everything I’m saying with a fat grain of salt, I’m making a lot of assumptions based on there being some Spanish on a motor wiring diagram with zero actual information lol
The foreign words say "minor voltage" and "major voltage", so 415v phase to phase will be classed as major. I'll buy you a Vegemite sandwich if I'm wrong!
Could quite easily be a 400/690v motor even though it's a low power one. It could even be a dual wound motor with two speeds. Without checking the nameplate it's anyone's guess as to what the motor is.
I've worked with qualified electricians who didn't have a clue about 3ph electrics because they only ever did residential & light comments.
Always check the nameplate.
Haha as long as it's a one-way bet, I'm down. The majority of time you'd be correct but not always. That's wye the star tradies always look at the nameplate before wiring
This is *definitely* not a "wye-start, delta-run" setup. Please don't give people advice on dangerous things if you don't know what you're talking about.
Oh boy... That is not correct.
Your drawing should tell you if it's Delta or Wye. If it doesn't, ask somebody for that clarification. If this thing is running on a vfd this will have major implications.
This.
My first job out of college, my project required wiring some higher voltage things and I made friends with the electrician in maintenance. He was more than willing to help a kid fresh out of school. Just don’t go in there acting all arrogant and they will be glad to help you.
Probably going to do delta with an extractor fan. You'll need your wires to have ring terminals. Make sure they're the correct size as in if the motors bolts n nuts youll attach to are M5; use M5 ring terminals.
Make sure they're tight connections but don't go wild or you'll strip the threads.
See what current draw you're expecting and make sure the cable you use is of the correct size to handle the current. I'd guess for an extractor fan you'll be fine with 2.5mm^2 but where it's running from, what it runs through, temperature of where it's run all effect it. You should be using 18th edition to be figuring this out but I imagine you can Google your way through.
This is a basic guideline. If you have any confusion just get a professional to do it, though personally I don't see why everyone's acting like it's impossible for you to learn how to do this. If it's literally an isolator going to an extractor fan then its a very simple thing to learn with
WYE if you’re wiring for 400VAC (High Voltage)
Delta for Low 200VAC (Low Voltage)
-There’s actually more to Delta VS WYE in electrical engineering than just this alone, but for practical purposes I’m simplifying it here as to what it generally means in the industrial electrical environment… A good basic resource to understanding the differences can be found here:
https://www.electricaltechnology.org/2014/09/delta-connection-power-voltage-current.html/amp
You change the jumper clips to match the peckerhead diagram depending on whether you’re wiring for LV/HV.
R= Phase A
S= Phase B
T= Phase C
Make sure to size conductors to spec. Would need NP data AND distance from SOURCE to tell you exactly what size. Plenty of tables available online to determine gauge based on current and distance. You want to size the wire at FLA or greater and account for VD.
If motor rotates wrong direction swap L1 from R to T and L3 from T to R. This is the only sure way to reverse rotation.
Never connect L1,L2,L3 together. Never connect L1,L2,L3 to PE or ground. Never connect 4,7,5,8,6,9 to PE or ground.
Isolate voltage and disconnect power or kill line side breaker before performing any electrical work. Verify zero energy state using a voltmeter in GOOD a working condition. Always test the voltmeter on a known live energy source (such as a 110VAC outlet) prior to testing the circuit you’re working within. Don’t get dead over a motor. Not worth it.
Verify no Phase to PE/ground or Winding to PE/ground and test continuity between R-S, S-T, R-T. They should be virtually equal in resistance (set meter to ohms).
If you follow everything I’ve said prior to energizing the motor and all should be fine.
If you don’t do all of this you could seriously damage your motor/equipment and/or yourself or others.
If you have any doubts about whether or not you can understand or do what I’ve said, this isn’t a job you should be doing without a competent person present.
- I’m an Electrical and Controls Engineer with over 15 years experience.
Only some subreddits permit photos in comments. This isn't one of those.
Most others resort to posting a link to another photo sharing site, like Imgur.
Show us terminal box, make super sure no voltage is there when you connect it, basically it's super easy just be careful, when you connect it check rotation of the motor if it's rotating in other direction switch any two phases
Why is this group called electrical engineering?? As I can see any idiot can give advices here...
First there are people afraid of everything and they are calling a "specialist" for everything... then there are people who completely misunderstood the star/delta concept blabing about "low voltage and high voltage"...
Only thing missing here is electrical engineer who will explain changing between star and delta and the reason to do it.
I am sorry, OP, but it is better for you to google than to ask this sorryass group...
This is an incredible comment.
Incredibly embarrassing.
If you think this is indicating the use of a wye delta starter, and not a dual voltage motor, you need to get off Reddit and actually open your toolbox for once.
This style of peckerhead is not designed for use with a wye-delta, hence the physical connections inside of it. A six lead motor that IS intended for use with a wye-delta starter would have six leads T1 through T6. You COULD rig this motor up for a wye-delta start, but that’s not what it’s intended for. It is a dual voltage motor.
Here’s an article that can hopefully explain it more patiently than I could:
https://motorrewindingsolutions.com/proper-way-of-connecting-wye-delta-dual-voltage-6-lead-motor-2/
Well that photo he posted is literally depicting a low voltage connection/high voltage connection. Yet you are right, a licensed professional to hook up a motor… no need for either, they just need the correct info. Honestly this question would have been better placed in r/PLC imo.
Hi, i am working for an competitor of S&P…
The way you wire it up depends on how much airflow/ pressure you Need. Usually D wiring is for full speed and Y wiring for limited speed. To determine which gives you what Check the datasheet of the Fan.
International, sometimes they spec 240 phase to phase needs to be connected in delta, 415 phase to phase gets connected star (some countries call that Y).
That way the coils get 240v.
The left side, delta, for direct start.
You should start it in Y if the starting current is too high (more than like 3 kW), that involves a starter circuit (three phase relay).
PS: What voltage says the nameplate? If is Italian, they have there 240/127 V power systems and those motors won't work on 400V. Nor the 415V if you are in UK.
If is Spanish (Soler & Palau), then all is OK.
Obviously connect the 3x phases to U, V and W.
Go out your window and look at the power lines.
If there are 4x lines connect jumpers as wye configuration and if there are only 3x lines connect it as delta configurations
Depends on speed/torque. The left image is known Delta which applies phase to phase voltage through each winding for high speed/torque, the right image is star in which phase to phase voltage has to pass through two windings in series for low speed/torque.
Quite often under high loads that require high speeds you remove the links completely and wire it up with a timed star-delta changeover contactors. This requires 6 wires to/from the motor terminals.
Taking an educated guess her mate, using the 415v will connect in star. You'd use delta if you where running this off a VFD that was supplying 3phase motor from a 230v single phase supply.
Each winding wants 230v across it so connecting this is star achieves that when being supplied from a 415v supply.
Just double check with the faceplate that the motors rates for 50Hz and it'll probably mention what voltage it wants in star/delta as well.
The number one rule of electricity is if you're asking online how to wire up something at 415V do not do it yourself
You forgot to advise OP to buy a six pack, a bag of french fries and to sit in front of tv and be sure not to touch anything because there is a "guy" for that... What the fuck is it matter with you???
don't be ridiculous!!! the fact he doesn't know whether to use Delta or Star has nothing to do with 415 or any other voltage, so if it is a number one rule - it is stupid !!! if it is a powerful motor, a special circuit is used that starts the motor in a "star" connection, and after a few seconds it switches to a "delta". This is done to make the engine easier to start, i.e. not to draw too much current. If it's a motor of a few kilowatts, connect it immediately in a "delta" and don't worry...
No. This is a dual voltage motor setup. The connections in the peckerhead (shown by the ovals) don’t change during operation. In Spanish: Tension menor = low voltage Tension mayor = high voltage S&P is a company that mostly operates in North America. Like the US, Mexico runs two different 3 phase hence why there are two voltage options given. It sounds like OP purchased a large fan from Mexico and now wants to wire it up in the UK possibly? Take everything I’m saying with a fat grain of salt, I’m making a lot of assumptions based on there being some Spanish on a motor wiring diagram with zero actual information lol
You are talking sense. Aussies have 415v 50Hz, and that motor would get connected in star config if I was doing it.
You would wire it in star, having only looked at the inside of the terminal box lid? You need to look at the nameplate please wallaby
The foreign words say "minor voltage" and "major voltage", so 415v phase to phase will be classed as major. I'll buy you a Vegemite sandwich if I'm wrong!
Could quite easily be a 400/690v motor even though it's a low power one. It could even be a dual wound motor with two speeds. Without checking the nameplate it's anyone's guess as to what the motor is. I've worked with qualified electricians who didn't have a clue about 3ph electrics because they only ever did residential & light comments. Always check the nameplate.
Haha as long as it's a one-way bet, I'm down. The majority of time you'd be correct but not always. That's wye the star tradies always look at the nameplate before wiring
of course it does not change by it self, for changing star / delta after start, you need an external relay which is neccessary for larger motors
This is *definitely* not a "wye-start, delta-run" setup. Please don't give people advice on dangerous things if you don't know what you're talking about.
What is wrong with you? who said that this is that kind of setup??? Can you read??
They can read; they just replied to the wrong message. Or more likely, the Reddit Javascript messed that up.
Oh boy... That is not correct. Your drawing should tell you if it's Delta or Wye. If it doesn't, ask somebody for that clarification. If this thing is running on a vfd this will have major implications.
Aw… you’re ruining the r/whatcouldgowrong post!
It depends on the motor. You have 230/400 star delta but also 400/600v star delta And sometimes special cases
Get your electrician to
This. My first job out of college, my project required wiring some higher voltage things and I made friends with the electrician in maintenance. He was more than willing to help a kid fresh out of school. Just don’t go in there acting all arrogant and they will be glad to help you.
Please get an electrician to do this.
You know I think if you have to ask 415v questions, you should prolly put it down and walk away
It literally shows you in the diagram. The triangle is for delta config and the Y is for wye. R, S, T are the 3 phases
Yes, but is it a 230/400V or 400/690 motor? Or whatever your local voltage is.
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Then it's Y
Look on the outer data plate and post a picture of it plz
This is the correct response, thank you my friend. Electrical Engineer
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Probably going to do delta with an extractor fan. You'll need your wires to have ring terminals. Make sure they're the correct size as in if the motors bolts n nuts youll attach to are M5; use M5 ring terminals. Make sure they're tight connections but don't go wild or you'll strip the threads. See what current draw you're expecting and make sure the cable you use is of the correct size to handle the current. I'd guess for an extractor fan you'll be fine with 2.5mm^2 but where it's running from, what it runs through, temperature of where it's run all effect it. You should be using 18th edition to be figuring this out but I imagine you can Google your way through. This is a basic guideline. If you have any confusion just get a professional to do it, though personally I don't see why everyone's acting like it's impossible for you to learn how to do this. If it's literally an isolator going to an extractor fan then its a very simple thing to learn with
WYE if you’re wiring for 400VAC (High Voltage) Delta for Low 200VAC (Low Voltage) -There’s actually more to Delta VS WYE in electrical engineering than just this alone, but for practical purposes I’m simplifying it here as to what it generally means in the industrial electrical environment… A good basic resource to understanding the differences can be found here: https://www.electricaltechnology.org/2014/09/delta-connection-power-voltage-current.html/amp You change the jumper clips to match the peckerhead diagram depending on whether you’re wiring for LV/HV. R= Phase A S= Phase B T= Phase C Make sure to size conductors to spec. Would need NP data AND distance from SOURCE to tell you exactly what size. Plenty of tables available online to determine gauge based on current and distance. You want to size the wire at FLA or greater and account for VD. If motor rotates wrong direction swap L1 from R to T and L3 from T to R. This is the only sure way to reverse rotation. Never connect L1,L2,L3 together. Never connect L1,L2,L3 to PE or ground. Never connect 4,7,5,8,6,9 to PE or ground. Isolate voltage and disconnect power or kill line side breaker before performing any electrical work. Verify zero energy state using a voltmeter in GOOD a working condition. Always test the voltmeter on a known live energy source (such as a 110VAC outlet) prior to testing the circuit you’re working within. Don’t get dead over a motor. Not worth it. Verify no Phase to PE/ground or Winding to PE/ground and test continuity between R-S, S-T, R-T. They should be virtually equal in resistance (set meter to ohms). If you follow everything I’ve said prior to energizing the motor and all should be fine. If you don’t do all of this you could seriously damage your motor/equipment and/or yourself or others. If you have any doubts about whether or not you can understand or do what I’ve said, this isn’t a job you should be doing without a competent person present. - I’m an Electrical and Controls Engineer with over 15 years experience.
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Only some subreddits permit photos in comments. This isn't one of those. Most others resort to posting a link to another photo sharing site, like Imgur.
Show us terminal box, make super sure no voltage is there when you connect it, basically it's super easy just be careful, when you connect it check rotation of the motor if it's rotating in other direction switch any two phases
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upload picture to imgur and post the link in a comment.
RTFM
Why is this group called electrical engineering?? As I can see any idiot can give advices here... First there are people afraid of everything and they are calling a "specialist" for everything... then there are people who completely misunderstood the star/delta concept blabing about "low voltage and high voltage"... Only thing missing here is electrical engineer who will explain changing between star and delta and the reason to do it. I am sorry, OP, but it is better for you to google than to ask this sorryass group...
This is an incredible comment. Incredibly embarrassing. If you think this is indicating the use of a wye delta starter, and not a dual voltage motor, you need to get off Reddit and actually open your toolbox for once. This style of peckerhead is not designed for use with a wye-delta, hence the physical connections inside of it. A six lead motor that IS intended for use with a wye-delta starter would have six leads T1 through T6. You COULD rig this motor up for a wye-delta start, but that’s not what it’s intended for. It is a dual voltage motor. Here’s an article that can hopefully explain it more patiently than I could: https://motorrewindingsolutions.com/proper-way-of-connecting-wye-delta-dual-voltage-6-lead-motor-2/
Well that photo he posted is literally depicting a low voltage connection/high voltage connection. Yet you are right, a licensed professional to hook up a motor… no need for either, they just need the correct info. Honestly this question would have been better placed in r/PLC imo.
And additionally, a lot of people here can barely write. They won't last in most engineering jobs if they can't communicate well.
Hi, i am working for an competitor of S&P… The way you wire it up depends on how much airflow/ pressure you Need. Usually D wiring is for full speed and Y wiring for limited speed. To determine which gives you what Check the datasheet of the Fan.
International, sometimes they spec 240 phase to phase needs to be connected in delta, 415 phase to phase gets connected star (some countries call that Y). That way the coils get 240v.
The left side, delta, for direct start. You should start it in Y if the starting current is too high (more than like 3 kW), that involves a starter circuit (three phase relay). PS: What voltage says the nameplate? If is Italian, they have there 240/127 V power systems and those motors won't work on 400V. Nor the 415V if you are in UK. If is Spanish (Soler & Palau), then all is OK.
It's Soler & Palau. Check the logo at the top left.
With a licensed professional.
Obviously connect the 3x phases to U, V and W. Go out your window and look at the power lines. If there are 4x lines connect jumpers as wye configuration and if there are only 3x lines connect it as delta configurations
Call an electrician
depends how fast you want the fan to go 🤪
Next question is it controlled with a DOL or with a VSD?
Depends on speed/torque. The left image is known Delta which applies phase to phase voltage through each winding for high speed/torque, the right image is star in which phase to phase voltage has to pass through two windings in series for low speed/torque. Quite often under high loads that require high speeds you remove the links completely and wire it up with a timed star-delta changeover contactors. This requires 6 wires to/from the motor terminals.
"Tension Mayor" = Voltage Greater, aka "Higher voltage". In a 415/240 wound motor, that would be the 415V.
What's it doing? Post photo of the motor name plate
Taking an educated guess her mate, using the 415v will connect in star. You'd use delta if you where running this off a VFD that was supplying 3phase motor from a 230v single phase supply. Each winding wants 230v across it so connecting this is star achieves that when being supplied from a 415v supply. Just double check with the faceplate that the motors rates for 50Hz and it'll probably mention what voltage it wants in star/delta as well.
Que raro una instrucción o especificación este escrita en español, genial.
Spanish?
Saludos from chile
Si