How to calculate pitch, gauge of winding wire, and No. of turns for 30HP, 3 phase, 4 poles 50Hz, 380V induction motors
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Answer Posted / Ashok Kumar Gautam
Calculating the pitch, gauge of winding wire, and number of turns for an induction motor involves several steps and requires specific formulas. Here is a simplified version of the process:n
1. Pitch: The pitch of a winding determines the distance between the centers of two adjacent coils on the same pole face. It can be calculated using the formula:n Pitch (mm) = 360 / (Poles * Slots per pole)n
2. Gauge: The gauge of a wire refers to its cross-sectional area or diameter. It is usually measured in American Wire Gauge (AWG) or Millimeters Square (MM^2). The appropriate gauge for the winding wire can be determined based on the current carrying capacity required for the motor.n
3. Number of Turns: The number of turns for a winding can be calculated using the formula:n Turns = Slot area (mm^2) / Wire cross-sectional area (mm^2)n Where Slot area is the product of Pitch squared and the length of one slot opening.
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