ABB RED670 - Page 185

Operate area
ROADir
IEC06000650_2_en.vsd
=
o
0RCADir
0
3I
j
0
3 × jI cos
- =
0
3
ref
U U
IEC06000650 V2 EN-US
Figure 43: Characteristic with ROADir restriction
1MRK 505 378-UEN A Section 11
Testing functionality by secondary injection
Line differential protection RED670 2.2 IEC 179
Commissioning manual