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Name
Values (Range)
Unit
Step
Default
Description
CurrentSel
Disabled
CB oper monitor
Continuous monitor
-
-
Disabled
Current function selection
CurrUnsymPU
0 - 100
%
1
80
Unsym magn of lowest phase current
compared to the highest.
CurrRelPU
0 - 100
%IB
1
10
Current magnitude for release of the function in
% of IBase
Table 118:
CCRPLD (52PD) Non group settings (basic)
Name
Values (Range)
Unit
Step
Default
Description
GlobalBaseSel
1 - 6
-
1
1
Selection of one of the Global Base Value
groups
8.6.6
Monitored data
Table 119:
CCRPLD (52PD) Monitored data
Name
Type
Values (Range)
Unit
Description
IMin
REAL
-
A
Lowest phase current
IMax
REAL
-
A
Highest phase current
8.6.7
Operation principle
The detection of pole discrepancy can be made in two different ways. If the contact based
function is used an external logic can be made by connecting the auxiliary contacts of the
circuit breaker so that a pole discrepancy is indicated, see figure
.
1MRK 502 048-UUS A
Section 8
Current protection
249
Technical manual
Summary of Contents for 650 series
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