For a 4-20mA single CT with a maximum range of 150 amps, what is the corresponding amps at 14mA?

To determine the corresponding amperage at 14mA for a 4-20mA single current transformer (CT) with a maximum capacity of 150 amps, it’s important to first understand how the 4-20mA range maps to the physical measurement of current.

The 4-20mA signal is used in industrial applications to represent a range of values, with 4mA corresponding to 0 amps and 20mA representing the maximum of 150 amps. This means the signal linearly maps 0 to 150 amps across the 16mA span (from 4mA to 20mA).

To find the linear relationship, we can use the formula dividing the total range of currents by the total range of the signal, followed by calculating the specific value at 14mA:

1. The total current range is 150 amps (from 0 to 150).

2. The total mA range is 16mA (from 4mA to 20mA).

Calculation of the ampere per mA will be:

150 amps / 16 mA = 9.375 amps/mA.

Next, we need to find the number of mA above