## What is the formula for induction motor?

Slip Speed & Slip of Induction Motor: Slip speed is the difference between synchronous speed and rotor speed; Nslip = Ns – N (Speed in RPM) ωslip = ωs – ω (Angular speed in Rad/sec)

**How do you calculate the power of a 3 phase induction motor?**

How do I calculate a 3-phase motor horsepower? You can use this equation HP = amperage × motor voltage × power factor × efficiency × 1.73205 / 746 to calculate the power rating of a 3-phase motor in horsepower.

**How do you calculate three phase motor?**

The equation is W = AV(sqrt 3) where A is amperes, V is volts, and sqrt 3 is the square root of 33 (about 1.73). W is the power consumption in watts. For example, if the electric motor uses 50 amps at 240 volts, the wattage is 50 x 240 x 1.73, or 20,760 watts.

### How do you calculate induction motor speed?

To calculate RPM for an AC induction motor, you multiply the frequency in Hertz (Hz) by 60 — for the number of seconds in a minute — by two for the negative and positive pulses in a cycle. You then divide by the number of poles the motor has: (Hz x 60 x 2) / number of poles = no-load RPM.

**How do you calculate 3-phase load current?**

A = 1000 × kW / (3 × PF × V) For a 3-phase power supply calculation, you need to multiply 1000 by the power (kW), divided by three times the power factor times line-to-neutral RMS voltage (V).

**What is the formula for 3 phase?**

3-Phase Power Formula 1 kW = 1,000W. As we can see, the electrical power in the 3-phase AC circuit depends on: I (Amps): Electrical current, measured in amps. The more amps we have, the more power we have in a three-phase circuit.

## How do you calculate motor load capacity?

Por = Nameplate rated horsepower Load = Output power as a % of rated power Pi = Three-phase power in kW η = 0.7457 x hp x Load Pi Page 8 8 By definition, a motor of a given rated horsepower is expected to deliver that quantity of power in a mechanical form at the motor shaft.

**How do you calculate motor current from RPM?**

In our example input electrical power of the motor is 0.22 A x 6 V = 1.32 W, output mechanical power is 1000 rpm x 2 x 3.14 x 0.00126 N•m /60 = 0.132 W.

**How do you calculate motor current from kW?**

For any single-phase AC circuit, Current, I = 1000 x kW / (Vac x P.F.) Therefore, amps can be calculated from AC – kW by dividing kW by the product of the RMS value of applied AC voltage and power factor and multiplying it by 1000.

### What is slip formula?

The difference between the synchronous speed and the rotor speed is known as slip speed. It is given by. Slip speed = Ns – Nr.

**How do you calculate 3 phase kilowatts?**

AC three phase amps to kilowatts calculation formula

- P(kW) = √3 × PF × I(A) × VL-L(V) / 1000.
- kilowatt = √3 × PF × amp × volt / 1000.
- kW = √3 × PF × A × V / 1000.
- P = √3 × 0.8 × 3A × 110V / 1000 = 0.457kW.