VAMP 265, Operation And Configuration Instructions

Page: 110 / 220

3.5 System clock and
synchronization 3 Supporting functions Technical description
110
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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
s AAIntv
Lead AvDrft
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
3600 24 9
5000
9 . 9
1
1

 


NEW
AAIntv
Lead AvDrft

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.