Eaton EDR 3000, Installation, Operation And Maintenance Manual

Page: 396 / 770

EDR-3000 IM02602003E
Breaker Wear
The protective relay offers the following Breaker Wear features:
•
Monitoring of the accumulated interrupted currents.
•
Slow breaker alarm
•
Calculation of the Breaker Open Capacity
»
Bkr OPEN capacity«
. 100% means that breaker maintenance is
mandatory now.
•
Breaker Wear Curve
•
Monitoring of total CLOSE/OPEN cycles and alarm for max allowed CLOSE/OPEN cycles per hour.
Slow Breaker Alarm
An increase of the closing or opening time of the breaker is an indication for the maintenance need of this switchgear. If
the measured time exceeds the time »
t-Move OPEN« or »t-Move CLOSE«, the signal »B
WEAR
S
LOW
B
REAKER
« will be
activated. This signal will be active until it is reset manually.
www.eaton.com 384