Superimposing Relays curve

[swiminelectricity]

Hi, Folks,

Who knows how to compare Trans upstream curve and trans down stream curve in order to see if they co-ordinate by SKM software.
What I have is the curve from Utility side and our downstream curve in SKM.

Thank you.

 

[Bung]

Set up one of the markers to measure the time between the two curves at the fault level in question. Or just do it by moving the cursor to one curve at the fault level you want, note the time ((the I and T coords are displayed in the status bar at he bottom of the window). Repeat for the other curve. Compare the times.


Bung
Life is non-linear...