ABB RELION REX640 - Exchanging Protection Relay

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 . Use of PartsOnLine requires user registration.
Check with your local ABB if the protection relay can be upgraded.
Removing, repairing and exchanging 1MRS759115 E
94 REX640
Installation Manual