Setting System Time And Time Synchronization - ABB RELION REX640 Operation Manual

1MRS759118 A
7.4.3.4
REX640
Operation Manual
GUID-A25A7168-2661-4583-84C3-8DE812AE30E4 V1 EN
Figure 96: Pairing the local HMI with the relay
After successful pairing, the LHMI Home page opens.
If the pairing is skipped, the LHMI can be used for monitoring
purposes only. Pairing can be initiated later via the drop-down
menu.

Setting system time and time synchronization

• Select Configuration/Time/System time to set the system time.
• Select Configuration/Time/Synchronization/Synch source to set the
synchronization source.
Setting daylight saving time
The protection relay can be set to determine the correct date for the DST shift every
year. The local time is used to set the DST.
1. Set the DST on day (weekday) and DST off day (weekday) parameters to define
on which week day the time shift occurs.
2. Set the DST on date (day), DST on date (month) and DST off date (month)
parameters to define on which month and week the time shift occurs.
The DST on/off date must precede the selected DST on/off day and be within the
same week as the DST shift.
Section 7
Commissioning
115