ABB RET670 - 1 Ph High Impedance Differential Protection HZPDIF (87); Application; Identification

3.5.3 1Ph High impedance differential protection HZPDIF (87)
3.5.3.1 Identification
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
1Ph High impedance differential
protection
HZPDIF
Id
SYMBOL-CC V2 EN
87
3.5.3.2 Application
The 1Ph High impedance differential protection function HZPDIF (87) can be used as:
• Autotransformer differential protection
• Restricted ground fault protection
• T-feeder protection
• Tertiary (or secondary busbar) protection
• Tertiary connected reactor protection
• Generator differential protection
The application will be dependent on the primary system arrangements and location of
breakers, available independent cores on CTs and so on.
Section 3 1MRK504116-UUS C
IED application
134
Application manual