R
X
RLdFw
RLdRv
ARGLd
ARGLd
ARGLd
ARGLd
en05000196.vsd
IEC05000196 V1 EN-US
Figure 174: 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
).
R
X
STCNDZ
STCNDLE
R
X
IEC10000099-1-
en.vsd
IEC10000099 V1 EN-US
Figure 175: Operating characteristic when load encroachment is activated
When the "phase selection" is set to operate together with a distance measuring zone the
resultant operate characteristic could look something like in figure
distance measuring zone operating in forward direction. Thus, the operating area of the zone
together with the load encroachment area is highlighted in black.
Section 7
1MRK 505 343-UEN B
Impedance protection
286
Application manual
Содержание Relion 670 series
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