59N, residual overvoltage protection (broken delta, voltage displacement, etc.)
But, it is common detection for whole system.
You can use Varmetric, IosinF0 for feeder detection.
Good explanation of erdep!!!
Saiedsadat, take in account, 400V is solid ground.
important point: EN 50522:2010 Earthing of power installations exceeding 1 kV a.c.
OK.
next steps.
1. What is a setting ground fault and overcurrent of upstream breaker?
2. What is a data of 13.8/0.48kV transformer?
( setting of 20A, 1sec and 30A 0.5 sec....is not setting)
Hello
that means, single phase short circuit current.
In your case, system is solid grounded, its very high level of single phase short circuit current.
Some one make short circuit study of system?
Im not familiar with Vamp terminals.
What is 0.67A ?
Why 0.3PU is 30A?
CT is 50/1
Phase CT is...