Residual Current Preprocessing Restctr - ABB RELION REX640 Technical Manual

Basic functions
Table 121: ILTCTR Non group settings (Advanced)
Parameter Values (Range)
Reverse polarity
0=False
1=True
Frequency adaptivi-
0=Disable
ty
1=Enable
3=Backup frequen-
cy source
3.17.1.6 Monitored data
Monitored data is available in three locations.
• Monitoring > I/O status > Analog inputs
• Monitoring > IED status > SMV traffic
• Monitoring > IED status > SMV accuracy
3.17.2

Residual current preprocessing RESTCTR

3.17.2.1 Identification
Function description
Residual current preprocessing
3.17.2.2 Function block
Figure 89: Function block
3.17.2.3 Functionality
The residual current preprocessing function RESTCTR is used for setting up the
residual current measurement channels. Input channels for RESTCTR are either
physical hardware or IEC 61850-9-2 sampled value channels. The output IRES_MEAS
channel of RESTCTR can be connected to different applications which require
measured residual current.
The current transducer selection can be made by setting
"Current trafo" for conventional CT or to "Current sensor" for current sensor type.
The residual CTs' primary rated current can be set using
The setting
winding. This is used as a reference to scale measurements accordingly.
194
Unit
Secondary current defines the nominal current of the CT's secondary
Step Default
0=False
0=Disable
IEC 61850 IEC 60617
identification identification
RESTCTR RESTCTR
1MRS759142 F
Description
Reverse the polari-
ty of the phase CTs
Frequency adaptivi-
ty selection
ANSI/IEEE C37.2
device number
RESTCTR
Current input type to
Primary current setting.
REX640
Technical Manual