GE CB Watch 3 - Setting Operation Timing Alarms; Operation Timing Alarm Summary

CB Watch 3 User Manual v6.3 - May 2019 Page 33 of 100
Setting Alarms
Notice: It is the customer’s responsibility to decide whether to set alarms or not and to
decide what thresholds to set alarms at, as this will depend on the customer’s
operational priorities and risk philosophy. However, here are some guidelines that may
prove helpful in deciding what threshold values to use:
Alarm Summary
This table summarises all the alarms that can be set in terms of operation timing
monitoring.
Without travel sensor present:
Additional alarms with travel sensor present:
Min Alarm Max Alarm Digital Relay
Number of opening operations, per pole No Yes Yes Yes
Number of closing operations, per pole No Yes Yes Yes
Pole discrepancy No Yes Yes Yes
52a contact switching time, per pole No Yes Yes
52b contact switching time, per pole No Yes Yes
Opening reaction time (t1), per pole Yes Yes Yes Yes
Opening operation time (t2), per pole Yes Yes Yes Yes
Opening travel time (t2-t1), per pole Yes Yes Yes Yes
Opening reaction time (t1) discordance No Yes Yes Yes
Opening operation time (t2) discordance No Yes Yes Yes
Opening travel time (t2-t1) discordance No Yes Yes Yes
Opening contact separation speed, per pole Yes No Yes Yes
Closing reaction time (t1), per pole Yes Yes Yes Yes
Closing operation time (t2), per pole Yes Yes Yes Yes
Closing travel time (t2-t1), per pole Yes Yes Yes Yes
Closing reaction time (t1) discordance No Yes Yes Yes
Closing operation time (t2) discordance No Yes Yes Yes
Closing travel time (t2-t1) discordance No Yes Yes Yes
Data obtained from CBW3
Thresholds
Alarms available
Yes
Min Alarm Max Alarm Digital Relay
Open position issue (travel sensor vs 52a) Yes
Close position issue (travel sensor vs 52b) Yes
Opening overtravel No Yes Yes Yes
Closing overtravel No Yes Yes Yes
Yes
Yes
Data obtained from CBW3
Thresholds
Alarms available
Yes