Instruction Manual

⎯ 42 ⎯
6 F 2 S 0 8 5 7
differential protection and the restricted earth fault protection. When choosing settings, the
following relationships between the overcurrent elements and the connected windings must be
taken into account.
1OC, 1OCI : Primary (high-voltage) winding
2OC, 2OCI : Secondary (medium-voltage) winding
3OC, 3OCI : Tertiary (low-voltage) winding
1EF, 1EFI : 1REF applied neutral circuit
2EF, 2EFI : 2REF applied neutral circuit
3EF, 3EFI : 3REF applied neutral circuit