Drawing the Mho Characteristic in GEC PYTC Relay

For example, we consider the PYTC relay to manually draw the distance characteristic. PYTC is actually a model of the PYTS relay used to protect systems including underground cables, as well as systems consisting of cable and airlines combination. The Mho characteristic in this relay makes the Distance function available to protect these systems.

The modules on this relay allow adjusting the protection zones based on different parameters.

assume the different element settings of the modules in this relay as follows:

In this case, considering the angle of the line is equal to 66 degrees, we add three Mho zones.

The first zone features a forward with a reach of 5.1 ohms and an angle of 66 degrees.

The second zone haves a forward characteristic of 7.65 ohms reach and an angle of 66 degrees,  

and finally the third zone 16.78 ohms reach with the same angle.

After this, you can also manually enter the trip time for each zone.