GE Industrial Solutions Entellisys 5.0 User Manual - Manual (Page 109)

Synch Check relay 109
5
5.4.3 Usage
When two voltage source circuit breakers are selected as the two sources for synch check relay,
if the differences in their magnitude, phase and frequency are within the set limits, the synch
check shows the synch status as Live and Synchronized. The Dead Source status is also shown
depending on whether the selected criterion for the dead source is met.
Figure 5-22 shows the status of a typical Synch Check Relay.
Figure 5-22 Synch Check status