ABB REL670 2.2 IEC Applications Manual page 320

Section 8
Impedance protection
314
ARGLd
ARGLd
RLdRv
IEC05000196 V1 EN-US
Figure 158: Characteristic of load encroachment function
The influence of load encroachment function on the operation characteristic is
dependent on the chosen operation mode of the FRPSPDIS function. When output
signal STCNDZis selected, the characteristic for the FRPSPDIS (and also zone
measurement depending on settings) can be reduced by the load encroachment
characteristic (as shown in figure 159).
X
RLdFw
ARGLd
ARGLd
en05000196.vsd
Line distance protection REL670 2.2 IEC
1MRK 506 369-UEN B
R
Application manual