ABB RELION 620 Series Technical Manual page 697

1MAC504801-IB E
8.3.7
8.3.8
Table 520: PQSS Group settings
Parameter Values (Range)
Reference voltage 10.0...200.0
Voltage dip set 1 10.0...100.0
VVa dip time 1 0.5...54.0
Voltage dip set 2 10.0...100.0
VVa dip time 2 10.0...180.0
Voltage dip set 3 10.0...100.0
VVa dip time 3 2000...60000
Voltage swell set 1 100.0...140.0
Table continues on next page
620 series ANSI
Technical Manual
Voltage variation measurement can be done to the phase-to-earth and phase-to-phase
voltages. The power quality standards do not specify whether the measurement should be
done to phase or phase-to-phase voltages. However, in some cases it is preferable to use
phase-to-earth voltages for measurement. The measurement mode is always TRMS.
Signals
Table 518: PQSS Input signals
Name Type
I_A SIGNAL
I_B SIGNAL
I_C SIGNAL
V_A SIGNAL
V_B SIGNAL
V_C SIGNAL
BLOCK BOOLEAN
Table 519: PQSS Output signals
Name Type
TRIP BOOLEAN
PICKUP BOOLEAN
SWELLST BOOLEAN
DIPST BOOLEAN
INTST BOOLEAN
Settings
Unit Step
%Un 0.1
% 0.1
cycles 0.1
% 0.1
cycles 0.1
% 0.1
ms 10
% 0.1
Power quality measurement functions
Default Description
0 Phase A current
0 Phase B current
0 Phase C current
0 Phase A voltage
0 Phase B voltage
0 Phase C voltage
0=False Block signal for activating the blocking mode
Description
Voltage variation detected
Voltage variation present
Voltage swell active
Voltage dip active
Voltage interruption active
Default Description
57.7 Reference supply voltage in %
80.0 Dip limit 1 in % of reference voltage
3.0 Voltage variation dip duration 1
80.0 Dip limit 2 in % of reference voltage
30.0 Voltage variation dip duration 2
80.0 Dip limit 3 in % of reference voltage
3000 Voltage variation dip duration 3
120.0 Swell limit 1 in % of reference voltage
Section 8
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