1.1.1 Current Transformer (CT)

Where:

K_coil is the CT transformer ratio

G_PGA is the ADC current channel gain

R_LOAD is the total burden resistance

Example:

If K_coil = 1000, G_PGA = 1 and R_LOAD = 3.24 Ohm, then this is possible:

K_lx = 1000 / (1 * 3.24) = 308.642

The metrology firmware uses uQ22.10 to represent both integer and fractional numbers; therefore, it is recommended that this be set:

K_lx = ROUND(308.642 * 2^10) = 0x0004D291