Secondary System Supervision - ABB RET670 Applications Manual

Section 3
IED application
Name Values (Range)
C_UV1 0.000 - 1.000
D_UV1 0.000 - 10.000
P_UV1 0.001 - 10.000
ResCrvType_UV2 Instantaneous
Frozen timer
Linearly decreased
tResetDef_UV2 0.00 - 6000.00
tResetIDMT_UV2 0.00 - 6000.00
A_UV2 0.005 - 999.000
B_UV2 0.500 - 99.000
C_UV2 0.000 - 1.000
D_UV2 0.000 - 10.000
P_UV2 0.001 - 10.000
3.11
3.11.1
3.11.1.1
572
Unit Step
- 0.001
- 0.001
- 0.001
- -
s 0.01
s 0.01
- 0.001
- 0.001
- 0.001
- 0.001
- 0.001

Secondary system supervision

Current circuit supervision CCSRDIF (87)
Function description
Current circuit supervision
Application
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. When currents from two independent three-phase sets of
CTs, or CT cores, measuring the same primary currents are available, reliable current
circuit supervision can be arranged by comparing the currents from the two sets. If an
error in any CT circuit is detected, the protection functions concerned can be blocked
and an alarm given.
Default Description
1.000 Parameter C for customer programmable
curve for UV1
0.000 Parameter D for customer programmable
curve for UV1
0.020 Parameter P for customer programmable
curve for UV1
Instantaneous Selection of reset curve type for UV2
0.00 Reset time delay in sec for definite time use
of UV2
0.00 Reset time delay in sec for Inverse-Time
curves for UV2
0.140 Parameter A for customer programmable
curve for UV2
1.000 Parameter B for customer programmable
curve for UV2
1.000 Parameter C for customer programmable
curve for UV2
0.000 Parameter D for customer programmable
curve for UV2
0.020 Parameter P for customer programmable
curve for UV2
IEC 61850 IEC 60617
identification identification
CCSRDIF -
1MRK504116-UUS C
ANSI/IEEE C37.2
device number
87
Application manual