ABB REQ650 - CT Ratio and Minimum Pickup Settings; Setting of Current Channels and Examples

3
3
1
REQ650 (A01)
Z
SC
: High
Ph – ea fault
IEC10000153-1-en.vsd
IEC10000153 V1 EN
Figure 19: Fault for step 2 setting
In case of a single-phase earth-fault in zone 1 reach in the shortest line from the remote
busbar, as shown in figure 20, the current to the protection is I = 1.0 kA.
Section 3 1MRK 505 291-UEN A
REQ650 setting examples
56
Application manual