ABB RELION REX640 Operation Manual page 101

1MRS759118 A
REX640
Operation Manual
application execution until correct data is received. In case of permanent faults, the
measurement chain should be checked to remove the origin of the faulty measurement
data.
In case of persistent faults originating from protection relay's internal
faults, contact ABB for repair or replacement actions.
Section 6
Troubleshooting
95