AngleRCA
Forward
Area
Iop = I2
Upol=-U2
Reverse
Area
IEC10000031-1-en.vsd
IEC10000031 V1 EN-US
Figure 59:
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.
8.4
Sensitive directional residual overcurrent and power
protection SDEPSDE
SEMOD171436-1 v4
1MRK 511 407-UEN C
Section 8
Current protection
Phasor measurement unit RES670 2.2 IEC
147
Application manual
Summary of Contents for Relion RES670
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