ABB RELION REX640 - 10.4.7.2 VSQVUB Output signals; 10.4.8 VSQVUB Settings

10.4.7.1 VSQVUB Input signals
Table 1645: VSQVUB Input signals
Name Type Default Description
U3P SIGNAL - Three-phase voltages
BLOCK BOOLEAN 0=False Block all outputs ex-
cept measured values
10.4.7.2 VSQVUB Output signals
Table 1646: VSQVUB Output signals
Name Type Description
MN_UNB_AL BOOLEAN Alarm active when 3 sec volt-
age unbalance exceeds the
limit
PCT_UNB_AL BOOLEAN Alarm active when percentile
unbalance exceeds the limit
OBS_PR_ACT BOOLEAN Observation period is active
10.4.8 VSQVUB Settings
Table 1647: 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 calcula-
tion
Unbalance start Val 1...100 % 1 1 Voltage unbalance
start value
Trigger mode
1=Single
2=Periodic
3=Continuous
3=Continuous Specifies the ob-
servation period
triggering mode
Percentile unbal-
ance
1...100 % 1 95 The percent to
which percentile
value PCT_UNB_VAL
is calculated
Obs period selec-
tion
1=1 Hour
2=12 Hours
3=1 Day
4=7 Days
5=User defined
5=User defined Observation period
for unbalance cal-
culation
Table continues on the next page
1MRS759142 F Power quality measurement functions
REX640
Technical Manual
1855