ABB Relion 650 Series REB650, Technical Manual

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15.2.6.2 Settings
Table 383: TIMEZONE Non group settings (basic)
Name Values (Range) Unit Step Default Description
NoHalfHourUTC -24 - 24 - 1 0 Number of half-hours from UTC
15.2.7 Time synchronization via IRIG-B
15.2.7.1 Identification
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Time synchronization via IRIG-B IRIG-B - -
15.2.7.2 Settings
Table 384: IRIG-B Non group settings (basic)
Name Values (Range) Unit Step Default Description
TimeDomain LocalTime
UTC
- - LocalTime Time domain
Encoding IRIG-B
1344
1344TZ
- - IRIG-B Type of encoding
TimeZoneAs1344 MinusTZ
PlusTZ
- - PlusTZ Time zone as in 1344 standard
15.2.8 Operation principle
15.2.8.1 General concepts
Time definitions
The error of a clock is the difference between the actual time of the clock, and the time
the clock is intended to have. Clock accuracy indicates the increase in error, that is, the
time gained or lost by the clock. A disciplined clock knows its own faults and tries to
compensate for them.
1MRK 505 288-UEN A
Section 15
Basic IED functions
465
Technical manual