Design Constant of DC Machine Calculator

Calculate Machine Constant







Formula

The formula to calculate the Machine Constant is:

\[ K_{\text{f}} = \frac{Z \cdot P}{2 \cdot \pi \cdot n_{\text{ll}}} \]

Definition

Machine Constant refers to the parameter which usually has a constant value for a particular type of DC machine.

Example Calculation

Let's assume the following values:

Using the formula:

\[ K_{\text{f}} = \frac{12 \cdot 9}{2 \cdot \pi \cdot 6} \approx 2.86478897565412 \]

Conversion Chart

Number of Conductors (Z) Machine Constant (Kf)
10 2.387324146378
11 2.626056561016
12 2.864788975654
13 3.103521390292
14 3.342253804930
15 3.580986219568