ABB UniGear Digital, Commissioning And Testing Manual, Page: 17 / 98

ETHER NET NETWOR K VER IFICATIO N PROTECTIO N R ELAYS
1VLG5000 17 C 5
Figure 4: PTP priority setting for Master clock
Other protection relays
On the protection relay LHMI go to -> Main Menu/Configuration/Time/Synchronisation
– PTP priority 1 = 128
– PTP priority 2 = 128
Figure 5: PTP priority setting for Slave clock
If both, Master and Backup master clocks fails, the protection relays establish a new
primary source for time synchronization information automatically.
Check time synchronization status at the voltage sender protection relay.
On the protection relay LHMI go to -> Main Menu/Monitoring/IED status/
Time synchronisation
– Synch source = IEEE 1588 master