Time Synchronization Via Irig-B; Settings; Operation Principle - ABB RELION 630 Series Technical Manual

Section 3
Basic functions
3.16.7
3.16.7.1
Table 70: IRIG-B Non group settings (basic)
Name
TimeDomain
Encoding
TimeZoneAs1344
3.16.8
102

Time synchronization via IRIG-B

Settings

Values (Range) Unit
LocalTime -
UTC
IRIG-B -
1344
1344TZ
MinusTZ -
PlusTZ

Operation principle

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.
External
synchronization
sources
Off
SNTP
IRIG-B
DNP
IEC60870-5-103
IEC09000210 V2 EN
Figure 52: Design of time system (clock synchronization)
From a general point of view synchronization can be seen as a hierarchical structure.
A function is synchronized from a higher level and provides synchronization to lower
levels.
Step Default
- LocalTime
- IRIG-B
- PlusTZ
Time tagging and general synchronization
Time-
regulator
SW- time
1MRS757256 F
Description
Time domain
Type of encoding
Time zone as in 1344 standard
Protection
Commu
Events
and control
- nication
functions
IEC09000210-2-en.vsd
PML630/Compact Load-Shedding Solution
Technical Manual