# calculate single phase voltage from 3 phase

This website uses cookies to improve your experience. The fundamental component of any analogue computer is the operational amplifier, or op amp. SAVE TIME: Download our Three Phase Excel Sheet hereUSA http://engmind.info/3-Phase-Excel-Sheet EU http://engmind.info/3-Phase-Excel-EU INDIA http://engmind.info/3-Phase-Excel-IN UK http://engmind.info/3-Phase-Excel-UK AUSTRALIA http://engmind.info/3-Phase-Excel-AU. Power factor 0.86, and what size of breaker and cable should I use. Balanced three phase system with total power P (W), power factor pf and line to line voltage VLL, Convert to single phase problem:      The electrical current always remains same in the series components. Home Basic Formulas Basic Formula to Calculate Apparent Power in Single and Three Phase Circuits. BC=651.85A, AC=651.84A, supply voltage 220 line to line.

If you have some expert knowledge or experience, why not consider sharing this with our community. = kW / (3 x pf) divided by (VLL/√3) We’ll cover how 3 phases are generated, what a Cycle and Hertz mean, plot the voltage wave form as it’s being generated, calculate our single phase and three phase voltages.

I hope to get some answers and if any reference on web would be great.

Phase A - 1/2 56,000 + 1/2 17,00 = 36,500 W - divide by 120 V gives 304 A in the line conductor - similar for the other phases, giving B=329 A and C=167 A I have assumed the power factor =1 and W = VA.         U=P/(I*cosφ), P = power in watt (W) ........................................................... © Power-Calculation.com. We can calculate how long it takes for a single rotation to complete using the formula Time T = 1 / f.f = frequency. I love how explained it by connecting it to airplanes which everyone can understand. Example: at 30 degrees for phase 3 we should get the value of 84.85 for a 120V supply 155.56 for a 220V supply 162.63 for a 230V supply 169.71 for a 240V supply. To find the power given current, multiply by the voltage and then the power factor to convert to W.  For a three phase system multiply by three to get the total power. Thanks Steven, it helps a lot. Phase Voltage = VLL/√3 We calculate the supplied voltage by squaring each of the instantaneous voltages per phase, then add all three values together per segment and then take the square root of that number. Often where single phase loads are involved, residential and commercial premises for example, the system can be unbalanced with each phase have a different current and delivering or consuming a differing amount of power. I now, finally understand 2,3 or more phase systems. What is the difference between three phase power factor and single phase power factor. So it is the second part of your reply that I don't understand. The service requires full cookie support in order to view this website. You would have 208 volts across each of the loads you gave and can find the current using Ohm’s law (i.e. You need to enter the real power in Kilowatts, current in amps, the voltage … dilan, the kVA would be ( 642.24 + 651.85 + 651.84) * 220 = 428102 VA = 428.1 kVA the kW would be 428.1 x 0.86 = 368.2 kW For the breaker, I would likely be looking at 800 A (posibly something like a MasterPact NT or NW, depending on other parameters) and setting the overload protection in the range of 710 A (this is plus 10%).

to get the total current.

North America some of

= (kW x √3) / (3 x pf x VLL) Enter the power factor of the load. 3 phase power supply contains three individual AC waveform with 120° difference between them.

We use copper wires because When the magnet completes 1 full rotation, we call this a cycle. Then the south magnetic pole comes across and pulls the electrons backwards, again the amount of electrons moving varies as the strength of the magnetic field changes during the rotation.

But opting out of some of these cookies may have an effect on your browsing experience. I thought Y systems had lower line currents and that was one advantage to using them. Hopefully it may prove useful to someone else.

time value below (number of hours and days the appliance is running) : P=U*I*cosφ In other words, they calculated the voltage needed to power a restrictive load, such as a heater, powered by a DC supply. Once you know the kVA, you can calculate the power factor form pf=kW/kVA. I know that it is right but how can i used it to find the value of complex power?? AC Power is an alternating current electrical energy consumed by the load connected in an electrical circuit, generally measured in horsepower, watts, kilo-watts or kilo-watts-hour. As an example, consider a load consuming 23 kW of power at 230 V and a power factor of 0.86: Note: you can do these equations in either VA, V and A or kVA, kV and kA depending on the magnitude of the parameters you are dealing with.