ABB Relion 670 Series Applications Manual page 170

Section 8
Current protection
ANSI10000031 V1 EN-US
Figure 79: Relay characteristic angle given in degree
In a transmission network a normal value of RCA is about 80°.
VPolMin : Minimum polarization (reference) voltage % of VBase .
I>Dir : Operate residual current level for directional comparison scheme. The setting is given in %
IBase . The pickup forward or pickup reverse signals can be used in a communication scheme.
of
The appropriate signal must be configured to the communication scheme block.
8.6 Sensitive directional residual overcurrent and power
protection SDEPSDE (67N)
8.6.1 Identification
Function description
Sensitive directional residual over
current and power protection
164
Reverse
Area
AngleRCA
Iop = I2
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Forward
Area
ANSI10000031-1-en.vsd
IEC 61850 IEC 60617
identification identification
SDEPSDE -
1MRK 511 401-UUS F
Vpol=-V2
ANSI/IEEE C37.2
device number
67N
Bay control REC670
Application manual
SEMOD171436-1 v4
SEMOD172025-2 v4