240V 3~ „Delta” input (no neutral needed) and the output is configured in 380V 3~ „Star” therefor You can supply appliances that work with Neutral as a reference (single phase apploances, aux power supplies etc) or the ones that do not need Neutral (3~ motors, VFDs etc). The only reason why there’s Neutral on the output is because some parts of the circuitry of Your new machine is in fact single phase and will require lower voltage ie. 240V (Live-to-Neutral). the transformer not only transform Your grid voltage to the required Voltage by the machine, but also provides You with total isolation from mains grid as well as provides Neutral
I just realised... By saying lower voltage ie. 240V Live-to-Neutral I meant that in 3~ 380(415/430)V the Live-to-Neutral is 240V and Live-toLive is 380V(415/430). In America Live-to-Neutral means 120V natively and that might confuse some people :)
My Chinglish is poor but looks like a delta to y transformer so perhaps it creates its own neutral? I would hook up your 3 220v phase leads then use a volt meter to see that you were getting your 380 outs and of course hook an earth ground for safety. Does the power conditioner have an N tap? If not I would just ignore it for this application.
Gary sometimes 3 phase equipment uses a neutral to power lower voltage components without having to use a control power transformer like you wide belt sander has. Having said that though I think you should call someone out to have a look a little more closely since if I recall right you have a high leg delta service to your shop. The voltage on that leg (orange) to neutral is higher than the other 2 phases to neutral. I think since they are using a step up transformer it should be OK as only the phase to phase voltages are used on the supply side. But again, I'm sure you spent some serious coin for the machine it's not worth the gamble.
I would need help there too. Another quickie video with the resolution would be appreciated I'm sure. You can't be the only one that's been there. Thanks for sharing
Hi Gary, Have you checked the voltage of your 3 phase, like I mentioned in other videos? On your 3 phase breaker, read between all tje terminals. 1 to 2, 1 to 3, 2 to 3. Also, read between the ground buss and each of those 3 terminals. Tell us what readings you get, then we can better help you. Also, would you show the connections or terminals on the power conditioner and the laser unit along with the labels? This transformer will work much like the little 120/110v transformer in your sander. It converts the 3 phase input into what the machine needs, including neutral. To my knowledge, the othrr terminal is ground and all three units will tie to the same earth ground. It is just a safety and ground is ground. The ground path wouldn't necessarily run through the transformer box and then to the next device but could be connected in a star pattern so it has it's own path to a ground connection and the other boxes have their own. Once the voltage of your 3 phase is known it can be determined if it is close enough to the 220 input on that transformer. If it was close, I would hook it up and check the output voltage. Are there any other taps hidden in the transformer box for other voltages? Sometimes there are more, but this might be made with only 1 input voltage. Check your panel witj a multimeter meter and get back to the comments. A commercial electrician consultation isn't a bad idea.
I'm having same issue, I have a cement pump which uses 3 phase and I only have 220v from the main available to me. The device (transformer) that you are using can I hook it up to a 220v and I'm good to go? Plug and play 🔌
Looks to me as though the transformer will provide its own neutral output since it’s on the output side. Check your wiring harness from the machine I’ll bet the colors will match the output. As for the input 3ph 220v is very common in the US and there is no neutral involved with it. 3 hots(L1,L2,L3) and a ground is all you need!
I am not an electrician, but: The primary / input side is a delta configuration that requires no neutral. The secondary / output side is a wye ("y") configuration that produces a neutral connection point for use on the secondary / output side - it has nothing to do with the primary / input connection & should not in any way be connected to the primary side. Not sure why, but I didn't see a suitable connection point for grounding in regards to the primary / input side. I would probably add a grounding lug attached to the transformer case and make all of the grounding connections from there. Again, I am not an electrician - but that is what I see from here. Starting from the left side, the first three connections are the primary side (L1,L2,L3), and the rest are on the secondary side except for the grounding connection.
Dan, yes I do tend to agree with what you're saying. It wouldn't make sense that there would be an input lead of any kind connection on the right side output, those are outputs only
I know I’m 2 years late to the game but I am ordering a pellet feed making machine that runs on 380V/3phase power that I have to get from my 240V 100A shop mains. I’m facing the same issues and would like to know where you got the transformer converter? Help a farmer?
@Ramsey Customs call an electrician just to hook up to the transformer, wouldn't be all that much. 220V three phase isn't that common in the states. Makes no sense why they gave you a 220V to 330V transformer. If they would have just made it 480V three phase it would be so much easier. It seems to me as if they are using a 220v appliance hook up with three hots, if that's the case get an electrician because it would have to be set up way different then three phase. Good luck let us know how you make out I am curious to see what the proper wiring is.
I always thought that couldn't be done without a rotary phase converter, hypothetically speaking say if you only have a supply voltage of 240vac from the line side (no 3-phase in the area) trying to figure out if only a transformer is needed, I would think you'd need to generate a completely separate sinusoidal phase wave that is opposite the other two... 🤯
Asking RU-vidrs for sophisticated electrical advice? I can save you some time by lending you a pack of matches to burn your shop down in a controlled fashion. Please hire an electrician for a couple hundred bucks so you can live another day and continue to make fine videos.
i am not afraid to pay someone to come do it. I just have a hard time fining people to come do small jobs like this where I live. I have already called 3-4 people, non have even called me back, but yet I have gotten calls and messages from multiple you tubers who are electricians.
the transformer is wired delta on one side and wye on the other side, that gives you the sqrt(3) voltage step up and the neutral (N), you only need the neutral for single phase loads. electricala2z.com/wp-content/uploads/2018/08/Figure-5.png PE is Protective Earth, also shown by the green/yellow wire which is a color combination reserved for Earth
Every AC needs neutral, even your 3 phase has a neutral as otherwise it wouldnt work. Check one of your 3 phase sockets, youll see 5 connectors, L1, L2, L3, N and PE. The reason your transformer has a neutral connection is because a transformer wont work without a neutral line, and the case also needs to be earthed. L1 is line conductor 1, L2 is line conductor 2 and L3 is line conductor 3. N is neutral and PE is protective earth. Check where one of your 3 Phase sockets wires lead, i bet those larger conductors on the neutral and earth bars are going directly into your 3phase wires.
I'm trying to remember but even american 480v 3 phase is only L1, L2, L3 and a ground. I never saw a neutral but that is 480V also. I never messed with 220V 3 phase, it isn't that common in the large equipment world in the US.
The more I thought about that, it looks like a three hot 220V load connection versus real 3 phase. It's like a 220V and neutral and ground with 3 hit legs. Weird like I said they did 220B versus 480V.
@@bigphillyed Honestly as a german i can say the whole american electricity setup is weird to me. :D 3 phase without a neutral is possible, but ive only seen it in systems that need overspeced conductors due to safety or damage prevention. It essentially means you take the low points on a line conductor and turn it into a neutral for a differnt line conductors, aka all 3 phases become neutrals in tune with the phase shift. In germany for example its highly uncommon due to the danger of such a setup compared to our usual 5 conductor setup, 3 conductors for the phases, one for earth and a beefy one for neutral which all 3 phases use. So id never expect something like this in anything les than a specialized industrial setup, certainly not a small workshop. Unles murica likes extra costs and danger XD
@@bigphillyed 220-250v phases are common in many countries, for example my workshop gets electricity from the local 400v phased network, i get 3 400v 32amp phases directly which i can use for true 400v 3 phase, and then there are 2 reduced lines coming in with 3 240v 16 amp phases each. So i could for example either hook a machine like this up to the 400v line, or use the transformer and use one of the 240v lines. I guess a reason why they supply such a transformer is because 400v lines are getting more and more uncommon in homes and small shops, as many 3 phase systems that arent for large industrial use often even come with transformers to transform the current up or down depending on their needs. For example the table saw our local carpenter uses runs on 240v 3 phase, but i can be hooked up to a 400v 3 phase thanks to its build in regulation. My home kitchen stove for example needs 240v 3 phase and would propably die on a 400v line.
@@bigphillyed You are correct, every 3 phase machine i have is wired as L1, L2, L3 plus a ground, no nuetral involved. I just thought someone may have installed one of these. Alot of your residential electricians wont really have a clue about this but yea i may call someone to help
