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
.
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
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