GE CB Watch 3 - Figure 23 - Auxiliary Contact Timing; Figure 24 - Auxiliary Contact Opening and Closing Graphs; Figure 25 - Auxiliary Contacts Switching Threshold; Figure 26 - Monitoring the Auxiliary Contacts

CB Watch 3 User Manual v6.3 - May 2019 Page 20 of 100
HMI: Measurements/Last opening results or Last closing results
Figure 23 – Auxiliary contact timing
• Auxiliary contact 52a switching time: Time elapsed between open/close
command received and the 52a contact changing status
• Auxiliary contact 52b switching time: Time elapsed between open/close
command received and the 52b contact changing status
A graph is available showing the contact status change for each pole:
HMI: Measurements/Operations Charts/Opening and Closing
Figure 24 – Auxiliary contact opening and closing graphs
An “Aux contacts timeout” maximum threshold value can be entered during setup under.
HMI: Settings/Operations Monitoring
Figure 25 – Auxiliary contacts switching threshold
An alarm is raised if, after an operation request has been detected, the 52a/52b contacts
do not switch status before the auxiliary contact timeout threshold has been exceeded.
This could indicate a faulty contact or an inability for the CB to respond to an operation
command (“order rejection”).
HMI: Measurements/Alarms
Figure 26 – Monitoring the auxiliary contacts