Name
Values (Range)
Unit
Step
Default
Description
tPRCrv4
0.005 - 3.000
-
0.001
0.500
Parameter PR for customer
programmable curve for step 4
tTRCrv4
0.005 - 100.000
-
0.001
13.500
Parameter TR for customer
programmable curve for step 4
tCRCrv4
0.1 - 10.0
-
0.1
1.0
Parameter CR for customer
programmable curve for step 4
HarmBlock4
Off
On
-
-
Off
Enable block of step 4 from harmonic
restrain
Table 75:
OC4PTOC Non group settings (basic)
Name
Values (Range)
Unit
Step
Default
Description
MeasType
DFT
RMS
-
-
DFT
Selection between DFT and RMS
measurement
GlobalBaseSel
1 - 12
-
1
1
Selection of one of the Global Base
Value groups
7.2.6
Monitored data
PID-6973-MONITOREDDATA v3
Table 76:
OC4PTOC Monitored data
Name
Type
Values (Range)
Unit
Description
DIRL1
INTEGER
1=Forward
2=Reverse
0=No direction
-
Direction for phase1
DIRL2
INTEGER
1=Forward
2=Reverse
0=No direction
-
Direction for phase2
DIRL3
INTEGER
1=Forward
2=Reverse
0=No direction
-
Direction for phase3
IL1
REAL
-
A
Current in phase L1
IL2
REAL
-
A
Current in phase L2
IL3
REAL
-
A
Current in phase L3
7.2.7
Operation principle
M12883-3 v10
Directional phase overcurrent protection, four steps OC4PTOC is divided into four
different sub-functions. For each step
x
, where x is step 1, 2, 3 and 4, an operation
mode is set by
DirModex
:
Off
/
Non-directional
/
Forward
/
Reverse
.
The protection design can be divided into four parts:
1MRK 506 382-UEN A
Section 7
Current protection
Line distance protection REL650 2.2 IEC
171
Technical manual
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