ABB RELION Series - Time Synchronization; Function Block; Functionality; Time Master Supervision GNRLLTMS

Name Type Values (Range) Unit Description
Programmable LED
4
Enum 0=None
1=Ok
3=Alarm
Status of programmable
LED 4
Programmable LED
5
Enum 0=None
1=Ok
3=Alarm
Status of programmable
LED 5
Programmable LED
6
Enum 0=None
1=Ok
3=Alarm
Status of programmable
LED 6
Programmable LED
7
Enum 0=None
1=Ok
3=Alarm
Status of programmable
LED 7
Programmable LED
8
Enum 0=None
1=Ok
3=Alarm
Status of programmable
LED 8
Programmable LED
9
Enum 0=None
1=Ok
3=Alarm
Status of programmable
LED 9
Programmable LED
10
Enum 0=None
1=Ok
3=Alarm
Status of programmable
LED 10
Programmable LED
11
Enum 0=None
1=Ok
3=Alarm
Status of programmable
LED 11
3.4 Time synchronization
3.4.1 Time master supervision GNRLLTMS
3.4.1.1 Function block
GUID-52938D64-7CEC-4CFC-BBC1-04FA6860EAD1 V1 EN
Figure 21: Function block
3.4.1.2 Functionality
The protection relay has an internal real-time clock which can be either free-running
or synchronized from an external source. The real-time clock is used for time
stamping events, recorded data and disturbance recordings.
The protection relay is provided with a 48 hour capacitor backup that enables the real-
time clock to keep time in case of an auxiliary power failure.
Section 3 1MRS758755 A
Basic functions
56 REC615 and RER615
Technical Manual