Setting Pump Alarms; Figure 158 - Pump Based Energy Storage Mechanism Alarms - GE CSE Uniserve CB Watch 3 Operating Manual

Setting Pump 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 for monitoring the hydraulic/pneumatic
energy storage mechanism:
Figure 158 – Pump based energy storage mechanism alarms
Alarm thresholds
Number of pump starts /24h
In some instances, an engineered leak ensures that the pump starts every couple of days, so
this should be considered. Depending on how often the breaker is supposed to operate,
more than 2 or 3 pump starts per day should be flagged.
Pump run time /24h
Depending on how long the pump cycle takes (typically 15-20minutes), the pump run time
should not exceed 60 minutes per day.
Cumulative pump motor run time
Data is usually available from the motor's maintenance manual. A possible value could be
12,000 min (200 hr), but it depends on the motor type.
Peak pump motor inrush current
Data is usually available from the motor's maintenance manual. A possible value could be
50A, but it depends on the motor type.
To avoid any alarms set as follows:
MA-037 - CB Watch 3 Operating Manual v7.0 - May 2020 Page 91 of 118