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10.4.6
Signals
Table 702:
VSQVUB Input signals
Name
Type
Default
Description
U_A
SIGNAL
0
Phase A voltage
U_B
SIGNAL
0
Phase B voltage
U_C
SIGNAL
0
Phase C voltage
U
1
SIGNAL
0
Positive phase sequence voltage
U
2
SIGNAL
0
Negative phase sequence voltage
U
0
SIGNAL
0
Zero sequence voltage
BLOCK
BOOLEAN
0=False
Block all outputs except measured values
Table 703:
VSQVUB Output signals
Name
Type
Description
MN_UNB_AL
BOOLEAN
Alarm active when 3 sec voltage unbalance
exceeds the limit
PCT_UNB_AL
BOOLEAN
Alarm active when percentile unbalance exceeds
the limit
OBS_PR_ACT
BOOLEAN
Observation period is active
10.4.7
Settings
Table 704:
VSQVUB Non group settings (Basic)
Parameter
Values (Range)
Unit
Step
Default
Description
Operation
1=on
5=off
1=on
Operation On/Off
Unb detection method
1=Neg Seq
2=Zero Seq
3=Neg to Pos Seq
4=Zero to Pos Seq
5=Ph vectors Comp
3=Neg to Pos Seq
Set the operation mode for voltage
unbalance calculation
Unbalance start Val
1...100
%
1
1
Voltage unbalance start value
Trigger mode
1=Single
2=Periodic
3=Continuous
3=Continuous
Specifies the observation period
triggering mode
Percentile unbalance
1...100
%
1
95
The percent to which percentile value
PCT_UNB_VAL is calculated
Obs period selection
1=1 Hour
2=12 Hours
3=1 Day
4=7 Days
5=User defined
5=User defined
Observation period for unbalance
calculation
User Def Obs period
1...168
h
1
168
User define observation period for statistic
calculation
Obs period Str year
2008...2076
2011
Calendar time for observation period start
year in YYYY
Table continues on next page
1MRS758755 A
Section 10
Power quality measurement functions
REC615 and RER615
705
Technical Manual
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