Three Phase Power Calculations Pdf Free >>> http://bit.ly/2o5tCQx
Three Phase Power Calculations Pdf Free
Kindly show the computation. Assuming 577 V is Line Voltage and load is balanced. You can't divide the current by three (power kW or kVA - yes). For a three phase system multiply by three to get the total power. Abdulla says: 5/30/2013 7:45 AM Hi steven sir, I want to know in motors we use capacitor, we use star connection for starting 3 phase, is it because the current lags the voltage by 90 degree in an coil or is it for a different reason. If you interested in an introduction you can view our post: Network Theory Introduction and Review Efficiency & Reactive Power Other things to consider while carrying out calculations may include the efficiency of equipment. I do have my 'Motor Starting - Star Delta' post drafted which explains this in more detail. Binesh says: 6/12/2012 9:16 AM I have 3 loads on each phase as L1-2=19.74 VA, L2-3=16.91 VA L1-3=13.81 VA Please tell the capacity of the transformer required.
Now the calculation you gave me gives me the total amps on A-B but it doesn't tell me how many amps I'm pulling on A and how many amps I'm pulling on B. Divide kW by the power factor to get the kVA. I work in the entertainment industry and definitely work with a star connected (wye) system where all legs measured to neutral is 120V and leg to leg is 208V. dilan says: 11/16/2012 11:10 AM thank you very much for the reply, but how to calculate the total ampere of the system, if A phase 80.6A, B phase 65.8A, C phase 73.2A. Add up the three phases = 48720 VA (or 48.72 kVA). To convert kW to kVA you need the power factor (you could just use kW, but you would have some error). To convert a three phase problem to a single phase problem take the total kW (or kVA) and divide by three. Just multiply the current by the phase-neutral voltage (to get the power per phase) and then by 3. BPE says: 9/27/2012 9:31 PM Thanks for the write up. Steven. The current is simply the kVA divided by the voltage. alo says: 10/10/2012 8:54 PM How can I calculate power factor(pf) if I know the kW, V, Hz and reactive power?For a three phase AC generator.Thanks Steven says: 10/11/2012 2:48 PM Once you know the kVA, you can calculate the power factor form pf=kW/kVA.