ABB RELION REX640 Technical Manual page 1160

Protection related functions
Figure 658: Inrush current in transformer
5.1.7 Signals
5.1.7.1 INRPHAR Input signals
Table 1104: INRPHAR Input signals
Name
I3P
BLOCK
5.1.7.2 INRPHAR Output signals
Table 1105: INRPHAR Output signals
Name
BLK2H
1160
It is recommended to use the second harmonic and the waveform based
inrush blocking from the transformer differential protection function
TR2PTDF, if available.
Type
SIGNAL
BOOLEAN
Type
BOOLEAN
Default Description
- Three-phase currents
0=False Block input status
Description
Second harmonic based
block
1MRS759142 F
REX640
Technical Manual