Normally the response value, more generally known as the C/K, is set automatically as a part of the Auto Setup sequence, but
there are cases when these values must be entered manually. The correct value can be calculated using an equation requiring
the 1^st step size (in vars). Line-to-line voltage of the network used (in volts) and the CT ratio as follows;

C/K = (Q_1st) / (I1/5A * U_LL * 1.73)

Where Q_1st = Size of 1st step in vars

U_LL = line-to-line voltage in volts

I1/5A = CT ratio

For example: for a 100kvar step under 6.6 kV with a CT of 2000/5,

C/K = 0.022, the choice is 0.02 to be set into the controller.

Caution: when the customer can see on the display “Verify", you mustn’t validate this parameter and you must go out of the manual
setup sequence. When we do "manual setting", we never use "VERIFY".Because VERIFY checks all parameters (as an auto setting).