There is a issue raised during differential stability in End to End test.
1. 1 1/2 scheme there are two CTs are connected in RED 670 relay
2. 1 amps with 0 dec injected in one CT and 1 amps with 180 dec injected in other CT
3. Now the Differential current IDL1MAG , IDL2MAG , IDL3MAG in three phase should be zero.
4. But there is small primary current read in all three phases around 100Amps in both source end and remote end relays.
5. Engineers tried to solve but not.
6. Then the line was energized and differential current got normal around zero.
Differential reading after energize the line
