Contact Wear; Number Of Operations - ABB SACE Emax 2 Series Installation, Operation And Maintenance Instructions

Contact wear Contact wear indicates the state of deterioration of the main contacts of the circuit-breaker.
Number of operations In the presence of auxiliary power, the release records a series information relating to openings
46 | © 2013 ABB | 1SDH001000R0002 - L7804
The value is expressed as a percentage, and is 0% in the case of no wear, and 100% in the
case of total wear.
It is calculated automatically by the release at every trip for protection or, in the presence of an
auxiliary power supply, also at every manual opening of the circuit-breaker.
of the circuit-breaker:
• Number of manual operations.
• Total number of operations (manual + trips).
ABB | SACE Emax 2
Ekip Dip protection release | 3 - Measurements