Removing, repairing and exchanging
7.5
Exchanging protection relay
• To exchange the protection relay with another identical unit, remove the
protection relay and install the new one.
The exchangeable units can be found in the PartsOnLine system, see
www.abb.com/partsonline
94
. Use of PartsOnLine requires user registration.
Check with your local ABB if the protection relay can be upgraded.
1MRS759115 E
REX640
Installation Manual