ABB RELION 670 Series Technical Manual page 734

Section 13
Secondary system supervision
13.1.4 Signals
Table 421: CCSSPVC (87) Input signals
Name
I3P
IREF
BLOCK
Table 422: CCSSPVC (87) Output signals
Name
FAIL
ALARM
13.1.5 Settings
Table 423: CCSSPVC (87) Group settings (basic)
Name Values (Range)
Operation Disabled
Enabled
IMinOp 10 - 200
Table 424: CCSSPVC (87) Group settings (advanced)
Name Values (Range)
Pickup_Block 20 - 500
Table 425: CCSSPVC (87) Non group settings (basic)
Name Values (Range)
GlobalBaseSel 1 - 12
13.1.6 Operation principle
Current circuit supervision CCSSPVC (87) compares the absolute value of the vectorial sum of the
three phase currents |ΣIphase| and the numerical value of the residual current |Iref| from another
current transformer set, see figure 388.
728
Type Default Description
GROUP - Group signal for three phase current input
SIGNAL
GROUP - Residual reference current input
SIGNAL
BOOLEAN 0 Block of function
Type Description
BOOLEAN Detection of current circuit failure
BOOLEAN Alarm for current circuit failure
Unit Step
- -
%IB 1
Unit Step
%IB 1
Unit Step
- 1
Default Description
Disabled Operation Disabled/Enabled
20 Minimum operate current differential
pickup in % of IBase
Default Description
150 Block of the function at high phase
current, in % of IBase
Default Description
1 Selection of one of the Global Base Value
groups
1MRK 502 066-UUS B
PID-3482-INPUTSIGNALS v6
PID-3482-OUTPUTSIGNALS v6
PID-3482-SETTINGS v6
M12396-5 v9
Technical manual