ABB RELION 670 Series Technical Manual page 213

1MRK 502 066-UUS B
ANSI10000099 V1 EN-US
Figure 87: Difference in operating characteristic depending on operation mode when load
When FDPSPDIS (21) is set to operate together with a distance measuring zone the resultant
operate characteristic could look like in figure 88. The figure shows a distance measuring zone
operating in forward direction. Thus, the operating area is highlighted in black.
IEC05000673 V1 EN-US
Figure 88: Operating characteristic in forward direction when load encroachment is
Technical manual
X
R
PHSELZ
encroachment is activated
X
"Phase selection"
"quadrilateral" zone
activated
DLECND
ANSI10000099-1-en.vsd
Distance measuring zone
Load encroachment
characteristic
R
Directional line
en05000673.vsd
Impedance protection
X
R
Section 7
207