Contact Wear; Datalogger - ABB SACE Emax 2 Series Installation, Operation And Maintenance Instructions

Contact wear

Datalogger

127 | © 2013 ABB | 1SDH001000R0002 - L7804
Path
Main page - Menus - Measurements
Description
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.
NOTE:
• On reaching 100%, the percentage is not increased any further.
• Reaching 80% is signalled with a prealarm, while reaching 100% is signalled with
an alarm.
IMPORTANT: 100% wear doesn't involve any functional limit for the release,
but the state of the circuit-breaker must be checked as soon as possible.
Path
Main page - Menus - Settings
Description
The datalogger it is a function that allows the recording of data associated to a trigger event.
The data recorded are:
• Analog measurements: phase currents and phase-to-phase voltages (if the Ekip Measuring
or Ekip Measuring Pro module is present).
• Digital events: protection alarms, circuit-breaker status signals, tripping of protections.
The recording is then downloadable to PC for reading and analysis.
IMPORTANT: the function is available with release energized with auxiliary
voltage.
ABB | SACE Emax 2
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Ekip Touch protection release | 14 - Touch measurements