ABB SACE Emax 2 Series - Contact Wear; Number of Operations

ABB | SACE Emax 2
46 | © 2013 ABB | 1SDH001000R0002 - L7804
Ekip Dip protection release | 3 - Measurements
Contact wear
Contact wear indicates the state of deterioration of the main contacts of the circuit-breaker.
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.
Number of operations
In the presence of auxiliary power, the release records a series information relating to openings
of the circuit-breaker:
• Number of manual operations.
• Total number of operations (manual + trips).