Ground Fault - TCC - Multiple of sensor 1

[NickParker]

When the pickup range is mentioned as 0.2 x sensor, why does the current in the curve (X- axis) starts from 0.8? How do I decide the band setting / trip time for a setting of 0.2 x sensor rating?

I attached the particular TCC.

 

[dpc]

The shape of the curve doesn't change. Just slide it from 0.8 to whatever pickup setting you want, noting that the actual pickup band is above the nominal setting. Also, the actual range of pickup settings for ground fault depends on the size of the breaker, due to NEC/UL. It can't be set higher than 1000 A primary. The time delay settings don't change.