3.5 System clock and
synchronization
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Example 1.
If there has been no external sync and the relay's clock is
leading sixty-one seconds a week and the parameter AAIntv
has been zero, the parameters are set as
sAAIntv
LeadAvDrft
9.9
61
8.604
With these parameter values the system clock corrects itself
with –1 ms every 9.9 seconds which equals 61.091 s/week.
Example 2.
If there is no external sync and the relay's clock has been
lagging five seconds in nine days and the AAIntv has been
9.9 s, leading, then the parameters are set as
6.10
3600249
5000
9.9
1
1
NEW
AAIntv
NOTE! When the internal time is roughly correct – deviation is less than four
seconds – any synchronizing or auto-adjust will never turn the clock
backwards. Instead, in case the clock is leading, it is softly slowed down
to maintain causality.
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