3-phase motor power calculator

Here is a simple calculator that you can use to calculate the power of a 3-phase AC motor:

Step 1: Enter the following values:

    Line voltage (V_L)
    Line current (I_L)
    Power factor (PF)

Step 2: Calculate the apparent power (S) in VA using the following formula:
S = V_L x I_L x PF

Step 3: Calculate the real power (P) in watts using the following formula:
P = S x PF

Step 4: Calculate the reactive power (Q) in var using the following formula:
Q = S x sqrt(1 - PF^2)

Example:

Suppose you have a 3-phase AC motor with the following parameters:

    Line voltage: 460 V
    Line current: 20 A
    Power factor: 0.85

Using the calculator above, you can calculate the apparent power, real power, and reactive power as follows:

S = 460 V x 20 A x 0.85 PF = 7680 VA
P = 7680 VA x 0.85 PF = 6544 W
Q = 7680 VA x sqrt(1 - 0.85^2) = 1090 var

Note: The power factor of an AC motor is a measure of how efficiently the motor converts electrical power into mechanical power. A power factor of 1.0 indicates that the motor is operating at maximum efficiency, while a power factor of less than 1.0 indicates that the motor is not operating at full efficiency.
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3 phase AcMotor current calculator

Here is a simple calculator that you can use to calculate the current of a 3-phase AC motor:

Step 1: Enter the following values:

    Line voltage (V_L)
    Power factor (PF)
    Voltage drop correction factor (K_E)
    Phase voltage (V_PH)
    Field current correction factor (K_F)
    Load current correction factor (K_C)

Step 2: Calculate the no-load current (I_NL) using the following formula:
I_NL = (V_L x PF x K_E) / (3 x V_PH x K_F x K_C)

Step 3: Calculate the full-load current (I_FL) using the following formula:
I_FL = I_NL / (K_F x K_C)

Note: The values for K_E, K_F, and K_C can typically be found in the motor's technical data sheet or can be obtained from the manufacturer.

Example:

Suppose you have a 3-phase AC motor with the following parameters:

    Line voltage: 460 V
    Power factor: 0.85
    Voltage drop correction factor: 1.0
    Phase voltage: 230 V
    Field current correction factor: 1.0
    Load current correction factor: 1.0

Using the calculator above, you can calculate the no-load current and the full-load current as follows:

I_NL = (460 V x 0.85 PF x 1.0 K_E) / (3 x 230 V x 1.0 K_F x 1.0 K_C) = 2.6 A

I_FL = 2.6 A / (1.0 K_F x 1.0 K_C) = 2.6 A