10.5. Configuring the directional overcurrent protection
There are two types of directional overcurrent protection – forward and reverse. Direction overcurrent protection configuration window is shown below. Basic parameters are the same as in non-directional protection: characteristic, direction, time settings and current setting.
“Characteristic angle” - defines an angle in degrees in which the protection is facing.
“Operation angle” - is an angle in degrees, which defines the tripping area of protection.
“Polarization voltage” - defines the voltage needed for protection to trip.
On the right, user can view the directional protection diagram. By clicking “Vectors” button in the table user can view different short circuit vectors and their direction. How to analyze this diagram is explained below.
