ABB rec670 - High Impedance Differential Protection, Single Phase HZPDIF (87)

Section 7 Differential protection
7.1 High impedance differential protection, single phase
HZPDIF (87)
IP14239-1 v4
7.1.1
Identification
M14813-1 v4
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
High impedance differential protection,
single phase
HZPDIF
Id
SYMBOL-CC V2 EN-US
87
7.1.2 Application
IP14944-1 v3
SEMOD54734-4 v8
The 1Ph High impedance differential protection function HZPDIF
(87) can be used as:
• Generator differential protection
• Reactor differential protection
• Busbar differential protection
• Autotransformer differential protection (for common and serial windings only)
• T-feeder differential protection
• Capacitor differential protection
• Restricted ground fault protection for transformer, generator and shunt reactor
windings
• Restricted ground fault protection
The application is dependent on the primary system arrangements and location of
breakers, available CT cores and so on.
1MRK 511 401-UUS A Section 7
Differential protection
Bay control REC670 2.2 ANSI 127
Application manual