Current Circuit Supervision (87) - ABB RES670 Technical Manual

1MRK 511 408-UUS A
Section 13
13.1
13.1.1
13.1.2
13.1.3
Phasor measurement unit RES670 2.2 ANSI
Technical manual
Secondary system supervision

Current circuit supervision (87)

Identification
Function description
Current circuit supervision
Functionality
Open or short circuited current transformer cores can cause unwanted operation of
many protection functions such as differential, ground-fault current and negative-
sequence current functions.
Current circuit supervision (CCSSPVC, 87) compares the residual current from a three
phase set of current transformer cores with the neutral point current on a separate input
taken from another set of cores on the current transformer.
A detection of a difference indicates a fault in the circuit and is used as alarm or to
block protection functions expected to give inadvertent tripping.
Function block
CCSSPVC (87)
I3P* FAIL
IREF* ALARM
BLOCK
ANSI13000304-1-en.vsd
ANSI13000304 V1 EN-US
Figure 126: CCSSPVC (87) function block
Signal ISIREF must be connected in the configuration.
Secondary system supervision
IEC 61850 IEC 60617
identification identification
CCSSPVC -
Section 13
IP14555-1 v5
M14870-1 v5
ANSI/IEEE C37.2
device number
87
M12444-3 v10
M12436-3 v9
363