# How do you calculate motor windings?

Contents

## What is the formula of motor?

Electric Motor Formula

TO FIND DIRECT CURRENT THREE PHASE
CURRENT P V x EFF P 1.732 x V x EFF x PF
EFFICIENCY 746 x HP V x I 746 x HP 1.732 x V x I x PF
POWER FACTOR —— Input Watts 1.732 x V x I
SHAFT SPEED —— 120 x F no. of poles

## How do you calculate winding resistance of a 3 phase motor?

R in ohms = Rated voltage /(rated current x1. 732×3. 5). Example : 2000kw motor, rated voltage is 6600v, rated current is 175A, then R= 6600/(175*1.732*3.5) = 6.22.

## How do you calculate winding pitch?

Pitch Factor is calculated by dividing the coil throw (–) 1 (coil span), by the number of slots per pole.

## How do you calculate winding production?

Some Important Conversions for Winding Production Calculation

1. 36 inch = 3 Feet = 1 Yard;
2. 1 Meter = 1.0936 Yards;
3. 1 Pound(lb) = 453.6 Gram = 16 Ounce (Oz);
4. 1 Lea = 120 Yards;
5. 840 Yard = 7 Lea = 1 Hank;
6. 1 Pound (lb) = 7000 Grains;
7. 1 Meter = 39.37 Inch;
8. 1 inch = 2.54 cm;

## How do you calculate motor current from kW?

Single Phase AC – kW to amps

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.

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## How do you calculate the real power of a motor?

By taking the voltage and multiplying it by the associated current, the power can be determined. A watt (W) is a unit of power defined as one Joule per second. For a DC source the calculation is simply the voltage times the current: W = V x A.

## How do you calculate motor load capacity?

When calculating motor loads, you need to know how to convert a motor’s current rating (given in amps) to a VA rating. To do this, multiply the motor’s nameplate amperage by the supply voltage.