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ABB Relion 670 series
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PHSELZ DLECND
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ANSI10000099-1-en.vsd
ANSI10000099 V1 EN
Figure 174: Difference in operating characteristic depending on operation mode
when load encroachment is activated
When FRPSPDIS (21) is set to operate together with a distance measuring zone the
resultant operate characteristic could look like in figure 107. The figure shows a
distance measuring zone operating in forward direction. Thus, the operating area of the
zone together with the load encroachment is highlighted in black.
1MRK505222-UUS C Section 6
Impedance protection
335
Technical reference manual

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