Motor current ratings based on kilowatt output at 120, 208, 240, 277, and 480 volts three-phase AC with an efficiency of 0.8 and a power-factor of 1. This formula measures the current draw for all three wires in the three-phase system to calculate the current for a single wire, you need to divide the result by three. This formula measures the current draw for one pair of wires in the three-phase system to calculate the current for all three pairs of wires, you need to multiply the result by three. Use one of the formulas below for line to line or line to neutral RMS voltages. The formulas to convert kilowatts to amps for a three-phase AC circuit are a little different from the formula for a single-phase circuit.
2 phase to 3 phase converter how to#
How to Find the Current of a Three-Phase AC Circuit In this example, the 5 kW motor will draw 34.72 amps of current. Try our power factor calculator to get the power factor if needed.įor example, let’s find the current of a 5 kW motor with an efficiency of 75% and power factor of 0.8 at 240 volts. The current I in amps is equal to the power P in kilowatts divided by the voltage V in volts times the efficiency η times the power factor PF. To find the input current required to achieve a certain motor output power accounting for power factor and efficiency, use the following equation. The magnitude of real and reactive together in alternating current power is called the apparent power, and the power factor is the ratio of real power to apparent power. Thus, the current I in amps is equal to the power P in kilowatts divided by the voltage V in volts times the efficiency η. To find the input current required to achieve a certain motor output power, use the following equation. Efficiency of the motor η, is defined as the ratio of power output to power input. How to Account for Motor Efficiency and Power FactorĮquipment is often not 100% efficient with power usage, and this must be factored in to find the number of amps consumed for a given output power. So, generating 1 kW of power at 120 volts will draw 8.33 amps of current. We strive to provide innovative solutions for other power problems, with the 'Phase Driver' Battery Backup 3 Phase Supply, Variable Speed Drives, Uninterruptible Power Supplies, Generators and Three Phase to Single Phase Transformers.For example, find the current of a circuit with 1 kW of power at 120 volts.
2 phase to 3 phase converter series#
Both series are designed made by us at our factory in Pakenham, Victoria. Phase Change Converters now offers more, with two ranges or rotary converters - a premium range for business, and a simpler lower cost solution for the hobbyist or home workshop. It will efficiently operate any 3 phase equipment. The Phase-Changer three phase converter changes a 240V, 415V or 480V single or two phase supply into an equivalent 415V 3-phase output, which is just like a utility 3 phase supply.
Phase Change Converters are your complete one stop shop for solutions to 3 phase power problems, offering a range of technologies and electrical accessories that make 3 phase machines work. Have you ever wanted to run a three phase powered machine, but you only have a single phase power supply available? Get 3 phase from single phase power with an Australian made single phase to 3 phase converter from Phase Change Converters. Two Phase To Three Phase Converter, For Industrial, Input Voltage: 440V. Single Phase to 3 Phase Converter, My-PS-5 Model, Suitable for 3HP(2.2Kw) 9 Amp 200-240V 3 Phase Motor, Only for One Motor Should One DPS Be Used, Input/Output 200V-240V, Digital Type 1 Delta ME Series VFD17AME43ANNAA 7.
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