ABB RET670 - Page 192

Trip area
ROADir
ANSI06000650-3-en.vsd
 0RCADir
0
3I

0
3 I cos

0
3
ref
VV
ANSI06000650 V3 EN
Figure 45: Characteristic with ROADir restriction
Section 11 1MRK 504 165-UUS -
Testing functionality by secondary injection
186 Transformer protection RET670 2.2 ANSI
Commissioning manual