ABB SACE Emax E2.2 Installation, Operation And Maintenance Instructions For The Installer And The User page 67

Circuit-breaker connections and
connections between circuit-
breaker and switchboard
65 | © 2019 ABB | 1SDH001000R0002 - ECN000109166 - Rev. D
Perform the following checks on the connections:
1. Remove any dust or dirt with a brush and dry cloth (use a mild detergent if necessary. If there is a
thick build-up of dirt, use a thinner from the greasing kit or ask for assistance from the service staff).
2. Make sure there there are no traces of overheating on the terminals. Overheating is detected by a
different coloration of the parts in contact; the contact parts are usually silvery white in colour.
3. Make sure that the bolts of the terminal connections are well tightened.
WARNING! if work must be performed on fixed circuit-breakers or on fixed parts,
disconnect the power supply to the power circuit and auxiliary circuits and visibly
ground the terminals on both the supply side and load side.
Putting into service and maintenance | 5 - Second level maintenance
ABB | SACE Emax 2