Figure 103 - Cumulative Arcing Contact Wear Graph; Figure 104 - Electrical Wear Weighting Table - GE CSE Uniserve CB Watch 3 Operating Manual

Arcing contact wear graph
A graph displaying the cumulative wear of the three arcing contacts over time is available.
With a point for each opening operation, it provides an easy visual method of spotting
variations between poles.
The graphs can be found in the Operations Charts section:
HMI: Measurements/Operations charts/Opening
Non-linear contact wear
To account for the case where the electrical wear is not linear (higher wear at lower
currents for examples), the function above can be modified and act as a magnifying (or
reducing) factor for a given amp rating by entering a coefficient greater than 1.0 (or smaller)
into a table. A spreadsheet can be used to upload the data.
HMI: Settings / Opening
MA-037 - CB Watch 3 Operating Manual
Figure 103 – Cumulative arcing contact wear graph
Figure 104 – Electrical wear weighting table
v7.0 - May 2020 Page 67 of 118