ABB Relion 650 Series Applications Manual page 65

1MRK 505 287-UUS B
Section 6
6.1 1Ph High impedance differential protection HZPDIF (87)
6.1.1 Identification
Function description
1Ph High impedance differential
protection
6.1.2 Application
Three instances of 1Ph High impedance differential protection function HZPDIF (87) is used as a
busbar protection for one busbar zone.
The 1Ph High impedance differential protection function HZPDIF (87) can be used as a restricted
earth fault protection.
3·87N
ANSI11000085 V2 EN-US
Figure 23: Application of a 1Ph High impedance differential protection HZPDIF (87) function
Busbar protection REB650
Application manual
Differential protection
IEC 61850
identification
HZPDIF
ANSI11000085_2_en.vsd
as busbar protection
© Copyright 2013 ABB. All rights reserved
IEC 60617
identification
Id
SYMBOL-CC V2 EN-US
Y
Differential protection
ANSI/IEEE C37.2
device number
87
Section 6
IP14239-1 v3
M14813-1 v3
IP14944-1 v3
SEMOD54734-4 v6
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