Eaton ARCON 2.0 Series Operation And Configuration Instructions. Technical Description page 33

Select the secondary In of the CT using the selection switch.
Select the CURRENT mode using the up and down arrow keys.
The earth fault current/phase current L2 setting value appears on the screen. Adjust the L2/I0
setting value (0.05...5.0*In) from the potentiometer.
Press the right arrow key to view the current phase setting value. Adjust the L1/L3 setting
value (0.5...6.0*In) using the potentiometer.
Figure: Adjusting the current setting in the master unit
The principles for changing the current setting in ARC-EC1/2.0 units are the same as for the
master unit. You can see the estimated current setting from the LED bar on the right side of
the unit.
The most accurate way of setting the current limit for the unit is as follows:
• Turn the potentiometer to the maximum value.
• Feed a test current corresponding to the required setting using a testing device.
• Lower the setting until the current activation indicator LED of the I/O unit and
the I>ext indicator LED in the master unit are lit.
Figure: Adjusting the current setting in ARC-EC1/2.0
ARC-EC1/2.0
ARCON ®
33