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If you have a 220v three phase delta system, the phase-to-phase voltage is 220v single phase; hence, no conversion is necessary. Don't worry about 220-240v rating, the voltage rating is nominal. Your 110v single phase has actually already be taken from a center-tapped transformer on your three phase system.
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ViviYes, a 480 to 240 3 phase delta to delta step down transformer can be used to step up voltage in the reverse.
<<>> However Transformers should always be used with the correct voltage on each winding.
Yes, a transformer is needed. The transformer will be a 480 to 120 volt step down transformer. Connect two legs of the three phase supply to the primary side of the transformer. From the secondary side of the transformer there will be a 120 volt single phase source. These transformers in the range of 50 to 150 VA are used for instrument control voltage supply. A 50 VA transformer will give you 50/120 = .46 amps on the secondary side, a 150 VA transformer will give you; 150/120 = 1.25 amps. For larger power transformers, a secondary load requirement is needed to calculate the transformer in VA or KVA.
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How do you get single phase 440 from three phase 440?
You Don't. 440volt 3-phase is actually 480 volts, taking a single phase gives 277Volts single phase. To get single phase 440 you would use one leg of three phase 440/760 three phase power.
How do you convert single phase kva to three phase kva?
Va=volts x amps. The K stands for one thousand. So 1 Kva is one thousand watts. So 415v times 120a= 49,800 what's. You divide that by a thousand and you get 49.8. So it would be 49.8 Kva.
How do you calculate 440v phase?
Let's get the terminology correct. A 'phase voltage' is measured across a phase, whereas a line voltage is measured between two lines. So there is no such thing as a 'phase to phase' voltage -it's a line to line voltage (hence the term 'line voltage').
Is 126 volts three phase?
126 volts sounds very close to a standard home voltage of 120 volts, which is single phase. 208v is a three phase voltage, and is the lowest I have seen. 240 is single phase (usually center tapped, so in your house you have +120, and -120 referenced to the neutral which provides the normal 240 for dryers, stoves, etc.).
How do you convert 3 phase star configuration 380 volts supply into 220 volts supply?
The process of obtaining 220 volts from 380 volts is quite simple. 380 volts is a three phase four wire system voltage. The 220 volts is obtained by taking the sq. root of 3 which equals 1.73 and dividing it into the phase voltage. 380/1.73 = 220 volts. This holds true with any three phase four wire voltage system. 208/1.73 = 120 volts, 415/1.73 = 230 volts, 480/1.73 = 277 volts and 600/1.73 = 347 volts. This lower voltage is present on any of the three phase legs of the three phase system to the neutral which is grounded on a wye connection.
