http://img7.imageshack.us/img7/8738/p0813.gifp75213 said:Homework Statement
Calculate the line current required for a [strike]30kW[/strike] 33kW 3 phase motor
NascentOxygen said:http://img7.imageshack.us/img7/8738/p0813.gif
Line current refers to the amount of electrical current that flows through each phase of a three-phase power system. It is measured in amperes (A) and is used to determine the power consumption of a device or motor.
Line current is important for a 30kW 3 phase motor because it helps to determine the required wire size, circuit breaker size, and overall power consumption. It also affects the efficiency and performance of the motor.
Line current for a 30kW 3 phase motor can be calculated using the formula: Line current (A) = Power (W) / (√3 x Line voltage (V) x Power factor). The power factor is typically between 0.8-0.9 for a three-phase motor.
The factors that can affect line current for a 30kW 3 phase motor include the power rating of the motor, the line voltage, the power factor, and the type of load (i.e. resistive, inductive, or capacitive).
Line current can be controlled for a 30kW 3 phase motor by using a variable frequency drive (VFD) or adjusting the motor's load and power factor. A VFD can help to regulate the speed and torque of the motor, which can in turn affect the line current.