ABB RELION 670 Series Technical Manual page 1243

1MRK 502 066-UUS B
Section 21
21.1 Time synchronization
21.1.1 Functionality
The time synchronization function is used to select a common source of absolute time for the
synchronization of the IED when it is a part of a protection system. This makes it possible to
compare events and disturbance data between all IEDs within a station automation system and in
between sub-stations.
21.1.2 Settings
There are two groups of parameter settings related to time:
• System time
• Synchronization
The System time group relates to setting the on/off and start/end of the Daylight Saving Time
(DST) for the local time zone in relation to Coordinated Universal Time (UTC). The Synchronization
group relates to selecting the coarse and fine synchronization sources. As well as defining the
synchronization master and accuracy levels specifically for IEC61850-9-2.
All the settings and parameters related to time are available via Local HMI under Main menu/
Configuration/Time/System time and via PCM600 under IED Configuration/Time.
Technical manual
Basic IED functions
Micro SCADA OPC server should not be used as a time synchronization source.
Section 21
Basic IED functions
IP1750-1 v1
M11344-3 v11
IP9657-1 v2
SEMOD55141-5 v5
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