Circuit-Breaker Connections And Connections Between Circuit-Breaker And Switchboard - ABB SACE Emax 2 Series Installation, Operation And Maintenance Instructions

Circuit-breaker connections and
connections between circuit-
breaker and switchboard
258 | © 2013 ABB | 1SDH001000R0002 - L7804
Perform the following checks on the connections:
1. With dry paint-brushes and rags remove dust or soil, if present (use a non- aggressive
detergent if necessary. Use a cleaning product such as Henkel 273471 or equivalent if
there is a heavy coating of dirt).
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 earth the terminals on both the supply side and load side.
Putting into service and maintenance | 5 - Second level maintenance
ABB | SACE Emax 2