ABB REG670 - Signals

13.1.4 Signals
Table 343: CCSSPVC Input signals
Name
Type Default Description
I3P GROUP
SIGNAL
- Group signal for three phase current input
IREF GROUP
SIGNAL
- Residual reference current input
BLOCK BOOLEAN 0 Block of function
Table 344: CCSSPVC Output signals
Name Type Description
FAIL BOOLEAN Detection of current circuit failure
ALARM BOOLEAN Alarm for current circuit failure
13.1.5 Settings
Table 345: CCSSPVC Group settings (basic)
Name
Values (Range) Unit Step Default Description
Operation Off
On
- - Off Operation Off / On
IMinOp 10 - 200 %IB 1 20 Minimum operate current differential level
in % of IBase
Table 346: CCSSPVC Group settings (advanced)
Name
Values (Range) Unit Step Default Description
Ip>Block 20 - 500 %IB 1 150 Block of the function at high phase
current, in % of IBase
Table 347: CCSSPVC Non group settings (basic)
Name
Values (Range) Unit Step Default Description
GlobalBaseSel 1 - 12 - 1 1 Selection of one of the Global Base Value
groups
13.1.6 Operation principle
Current circuit supervision CCSSPVC compares the absolute value of the vectorial
sum of the three phase currents |ΣIphase| and the absolute value of the residual current
|Iref| from another current transformer set, see figure 286.
The FAIL output will be set to a logical one when the following criteria are fulfilled:
Section 13 1MRK502052-UEN B
Secondary system supervision
604
Technical manual