ABB 615 series Technical Manual page 351

1MAC059074-MB A
615 series ANSI
Technical Manual
Forward
tripping zone
IGcos
non-tripping
zone
Min operating
current
Backward
tripping zone
GUID-5D6DC72B-7B8F-4B8B-B345-767CC1302BC2 V1 EN
Figure 161: Operating characteristic Iocos(φ) in forward fault
Example 4.
Iocos(φ) criterion selected, reverse-type fault
=> FAULT_DIR = 2

= 0 deg
RCA
-VG
IG
Correction
angle
Section 4
Protection functions
345