Answer for UK, Europe and countries running a 50 Hz supply service.
A voltage of 380 volts is not a standard North American voltage, it is a European system voltage. The 220 volts is the line to neutral voltage of 380 volts wye connected system. 380/1.73 = 220
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As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.
Before you do any work yourself,
on electrical circuits, equipment or appliances
always use a test meter to ensure the circuit is, in fact, de-energized.
IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB
SAFELY AND COMPETENTLY
REFER THIS WORK TO QUALIFIED PROFESSIONALS.
Further AnswerAs the original answer says, a line voltage of 380 V would result in a phase voltage of 220 V for a delta/wye transformation, but 380 V is not a standard voltage either in North America or in Europe.
The standard nominal line voltage (i.e. line-to-line voltage) used throughout European three-phase low-voltage systems is 400 V. As European three-phase distribution Transformers are always connected delta/wye, A 400-V nominal line voltage results in a 230-V phase voltage (line-to-neutral voltage).
dear frend i want to ask you
my power is 415v /three phase and 240 volts single phase
and i want to go down to 380v/three phase and 220v single phase
if make this change
i wiil pay less electricity
my fuses is 30 amps three phase and the power from the main electrical company is
415v t/p and 240v s/p
and what is the price for this rasformer ingluded and shipping cost to come here in Cyprus
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Cannot help you with costs- you will need to check with an electrical supply company You are correct that you need a stepdown transformer. HOWEVER- your electrical utility charges will not be less. The TRANSFORMER is still using the higher voltage- AND- there are losses in any transformer. You need to talk with a real electrician where you live. You are trying to get something out of nothing, and that does not work.
Yes it is possible to convert any voltage to another provided the losses are not too great. It is just the ratio of primary to secondary windings in a transformer.
You will have to use a step down transformer to do this. Voltage to earth measures 277 vac on a 480 vac wye system.
Yes, this is called a step up transformer and this is the prime purpose of using transformers.
3 phase 220 volt submersible motor convert to 440 volt
we are looking to wire up diagram for a 45kw transformer from 220 volts to 440 volts 3 phase 60 Hz <<>> The formula you are looking for is KVA = Amps x Volts x 1.73/1000 = 118 x 380 x 1.73 = 77573/1000 = 77.5 KVA transformer. Your primary amperage will be 205 amps and the secondary amperage will be 118 amps.
I know that a company named TEMco makes a 380v to 120/208 transformer. You can try contacting them for your specific application I will attach their website for you.
Short answer: No. (unless you like ruining motors) Longer answer: Not really, but there are some motors that can be re-wired so that instead of 440v they will run on 220v. However, this is not that common. Conclusion: Check the motor to see if it is dual-voltage on it's nameplate. If it is, you can re-connect it to work on 220v. If it is NOT a dual-voltage motor, you will absolutely ruin it if you connect it to 220v.
You cannot run a three phase motor on single phase power. You'll burn the motor up within minutes. By the way, I've never seen or heard of a 380 volt motor. Do you mean a 480 volt motor? If so, the only way you can power it is with the correct full voltage and a 3 phase power supply.
I guess you have a chiller unit suitable for 380Volts and you have a source voltage of 220V. You can step up 220Volts to 380 volts with a suitable rated step up transformer.
Only with a 3 phase transformer.
any one of the three line to neutral is 220 volts
Use a transformer.
3 phase 220 volt submersible motor convert to 440 volt
If these are the exact voltages that you need you will need an auto transformer to obtain these voltages. If these voltages are nominal voltages and are of a three phase four wire configuration, the 220 voltage can be obtained from the three phase legs to the neutral (ground) connection. The equation to use is 400/1.73 = 231 volts.
No 380 volts is too wide a spread to use a 220 volt motor on.
Unless it is specifically designed to run at reduced voltage, you shouldn't connect it directly. You'll need a step up transformer from 220 to 380.
220 volt single phase from 480 volt 3 phase that one wire taken one phase and second wire connected in earth point. we get 220 v The above answer is incorrect, one phase from a three phase 480 volt system will give you 277 volts to ground. You must use a transformer to get the voltage you need.
You can get a buck / boost transformer which will step down the voltage. What will be important is phase supply.
Answer for UK and countries running a 50 Hz supply service.The voltage potential of 380 volts is not common to North America.It will probably be difficult to tap into the plug to get the voltage.If you have a three phase 380 volt supply from a source then you can obtain a single phase voltage of 220 volts from it. 220/380 is a wye voltage connection. 380 divided by 1.73 will give you 220 volts. L1 - N = 220V, L2 - N =220V, L3 - N = 220V. L1 - L2 = 380, L2 - L3=380, L3 - L1 = 380.
you could use a step down transformer if you had no other option. but the best thing to do is run a 220 feed directly from the fuse panel Step down transformers get very hot and do not last forever