Three Phase Induction Motor Current Calculation

Enter the rated volts amps power and efficiency to find the current flowing through the motor. So we get the ratio of p 2.

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The phase current i in amps a is equal to 1000 times the power p in kilowatts kw divided by 3 times the power factor pf times the line to neutral rms voltage v l n in volts v.

Three phase induction motor current calculation. 3 phase motor current calculation formula is p 3xvxpfxeff or p 1732xvxpfxeff both are same. 3 phase induction motor current calculator is used to calculate the rated and full load amperes of the motor. Calculation with line to neutral voltage.

Typical power factor values. 3 phase induction motor current calculator. These rotor copper losses are expressed as p c 3i 22 r 2 we know that rotor current substitute this value of i 2 in the equation of rotor copper losses p c.

Do not use typical power factor values for accurate calculations. To this end it will be assumed that the motor is a balanced three phase wye connected load and that you will therefore need to measure only one line neutral voltage only one line current and only one phase power to characterize p in completely. For three phase motor amps calculation the below formula is used.

In case of three phase induction motor there occur copper losses in rotor. R 1 0342. One 3 phase induction motor is running voltage415 current08 hp75 speed1440rpm pf08.

A 3 phase y connected 460 volt line to line 25 horsepower 60 hz 8 pole induction motor has the following constants in ohms per phase referred to the stator. 1 s where. The motor full load current calculator calculates the motor full load current from the following parameters.

So our motor power is 15kw with 15 x 1000 15000 watts. For this example refer to the motor equivalent circuit and calculations described above. Motor volts is 380 volts eff is 089 and pf is 085 according the above nameplate.

How to calculate motor efficiency and torque give the formula. The phase to phase voltage for a 3 phase supply or the phase to neutral voltage for a single phase supply. P m 1.

Whether its a 3 phase or single phase voltage supply.

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