ABB Relion REC670 - Sensitive Directional Residual Overcurrent and Power Protection SDEPSDE; Identification

AngleRCA
Forward
Area
Iop = I2
Upol=-U2
Reverse
Area
IEC10000031-1-en.vsd
IEC10000031 V1 EN-US
Figure 62: Relay characteristic angle given in degree
In a transmission network a normal value of RCA is about 80°.
UPolMin : Minimum polarization (reference) voltage % of UBase .
I>Dir : Operate residual current level for directional comparison scheme. The setting is given in
% of
IBase . The start forward or start reverse signals can be used in a communication scheme.
The appropriate signal must be configured to the communication scheme block.
7.6 Sensitive directional residual overcurrent and power
protection SDEPSDE
SEMOD171436-1 v4
7.6.1 Identification
SEMOD172025-2 v4
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Sensitive directional residual over
current and power protection
SDEPSDE - 67N
1MRK 511 358-UEN A Section 7
Current protection
133
Application manual