![]() Line to neutral voltage is the voltage measured between any line and the neutral point. On the other hand, for the 3-phase system, you can use S I × V × 3 / 1000 for line-to-line voltage and S. Line to line voltage is the voltage measured between any two lines in a three phase circuit.)ĭetermine the phase current I in amps (A) by dividing the power P in watts (W) by 3 times the power factor PF times the line to neutral RMS voltage VL-N in volts (V): To convert amps to kVA in a single-phase power system, you can use the formula S I × V / 1000 where the amperage (I) is in amperes, the voltage (V) is in volts, and the resulting apparent power (S) is in kilovolt-amperes or kVA. The RMS voltage is the square root of the mean over one cycle of the square of the instantaneous voltage.)Ĭonverting Watts to Amps (AC three phase system)Ĭalculate the phase current I in amps (A) by dividing the power P in watts (W) by the square root of 3 times the power factor PF times the line to line RMS voltage VL-L in volts (V): Power factor values can range from 0 to 1. (The power factor is the ratio of the real power flowing to the load to the apparent power in the circuit. Results: Voltage: 208 V (volt) Current: 5 A (amp) 0.0050 kA (kiloamp) Apparent Power: 1040 VA (volt-amp) 1.
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