Section 5 Differential Protection; Line Differential Protection - ABB Relion 670 Series Technical Reference Manual

1MRK505222-UUS C
Section 5
5.1
Technical reference manual
Differential protection
About this chapter
This chapter describes the measuring principles, functions and parameters used in
differential protection.

Line differential protection

Function description
Line differential protection, 3 CT sets,
2-3 line ends
Line differential protection, 6 CT sets,
3-5 line ends
Line differential protection 3 CT sets,
with in-zone transformers, 2-3 line ends
Line differential protection 6 CT sets,
with in-zone transformers, 3-5 line ends
Line differential logic
Differential protection
IEC 61850 IEC 60617
identification identification
3Id/I>
L3CPDIF
SYMBOL-HH V1 EN
3Id/I>
L6CPDIF
SYMBOL-HH V1 EN
3Id/I>
LT3CPDIF
SYMBOL-HH V1 EN
3Id/I>
LT6CPDIF
SYMBOL-HH V1 EN
LDLPDIF -
Section 5
ANSI/IEEE C37.2
device number
87L
87L
87LT
87LT
87L
121