Signals - ABB RELION REX640 Technical Manual

Section 10
Power quality measurement functions
10.3.8
10.3.9
Table 1458: PHQVVR Group settings (Basic)
Parameter
Reference voltage
Voltage dip set 1
VVa dip time 1
Voltage dip set 2
VVa dip time 2
Voltage dip set 3
Table continues on next page
1636
interrupt fault currents. All these actions result in a sudden reduction of voltages on all
voltage phases.
Due to the nature of voltage variations, the power quality standards do not specify any
acceptance limits. There are only indicative values for, for example, voltage dips in
the European standard EN 50160. However, the power quality standards like the
international standard IEC 61000-4-30 specify that the voltage variation event is
characterized by its duration and magnitude. Furthermore, IEEE Std 1159-1995 gives
the recommended practice for monitoring the electric power quality.
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 1456: PHQVVR Input signals
Name
I3P
U3P
BLOCK
Table 1457: PHQVVR Output signals
Name
OPERATE
START
SWELLST
DIPST
INTST
Settings
Values (Range) Unit
10.0...200.0 %Un
10.0...100.0 %
0.5...54.0 cycles
10.0...100.0 %
10.0...180.0 cycles
10.0...100.0 %
Type Default Description
SIGNAL - Three-phase currents
SIGNAL - Three-phase voltages
BOOLEAN 0=False Block signal for activating the blocking mode
Type Description
BOOLEAN Voltage variation detected
BOOLEAN Voltage variation present
BOOLEAN Voltage swell active
BOOLEAN Voltage dip active
BOOLEAN Voltage interruption active
Step Default
0.1 57.7
0.1 80.0
0.1 3.0
0.1 80.0
0.1 30.0
0.1 80.0
1MRS759142 C
Description
Reference supply voltage in %
Dip limit 1 in % of reference voltage
Voltage variation dip duration 1
Dip limit 2 in % of reference voltage
Voltage variation dip duration 2
Dip limit 3 in % of reference voltage
Technical Manual
REX640