ABB REL650 series Technical Manual page 144

Section 6
Impedance protection
138
GUID-15250C2D-D7FE-46A4-8392-8A3E5D5AAACE---ANSI V1 EN
Figure 57: Difference in operating characteristic depending on operation mode
when load encroachment is activated
When FDPSPDIS (21) is set to operate together with a distance measuring zone the
resultant operate characteristic could look like in figure 58. The figure shows a distance
measuring zone operating in forward direction. Thus, the operating area is highlighted in
black.
1MRK 506 335-UUS A
Technical manual