GE Industrial Solutions Entellisys 5.0 User Manual - Manual (Page 118)

Multi-point functions 118
7
Figure 7-4 Bus differential alarms setup
Events
To view a table of the events generated by the Bus Differential Relay, see Bus Differential Events
on page 275 .
7.1.2 Troubleshooting
Bus Differential Setting Change Rejected events are observed in the Sequence of Events log
•
Verify that the pickup setting is within the valid range. Valid range is from “Zone Minimum
Pickup” to 22,000 Amps. (See
Setting Bus Differential pickups/delays on page 116 .)
Frequent suspended/resumed events are seen
•
Verify that both CPUs are operating with the hardware clock. This can be done from the
System Health screen. The Synchronization hardware OK indicator lights should be green for
both CPUs.