VAMP 259 - Page 157

Technical description
3 Supporting functions
3.5 Voltage interruptions
VM259.EN007
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157
Figure 3.5-2 A short voltage interrupt that will be recognized
Setting parameters of the voltage sag measurement
function:
Parameter
Value
Unit
Default
Description
U1<
10.0 … 120.0
%
64
Setting value
Period
8h
Day
Week
Month
-
Month
Length of the observation
period
Date
-
-
Date
Time
-
-
Time
Measured and recorded values of voltage sag measurement
function:
Parameter
Value
Unit
Description
Measured
value
Voltage
LOW;
OK
-
Current voltage status
U1
%
Measured positive
sequence voltage
Recorded
values
Count
-
Number of voltage sags
during the current
observation period
Prev
-
Number of voltage sags
during the previous
observation period
Total
s
Total (summed) time of
voltage sags during the
current observation period
Prev
s
Total (summed) time of
voltage sags during the
previous observation
period