Signals - ABB RED615 Technical Manual

1YHT530004D05 D
10.3.7
615 series
Technical Manual
breakers that 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 653: PHQVVR Input signals
Name Type
I_A SIGNAL
I_B SIGNAL
I_C SIGNAL
U_A SIGNAL
U_B SIGNAL
U_C SIGNAL
BLOCK BOOLEAN
Table 654: PHQVVR Output signals
Name Type
OPERATE BOOLEAN
START BOOLEAN
SWELLST BOOLEAN
DIPST BOOLEAN
INTST BOOLEAN
Power quality measurement functions
Default Description
0 Phase A current magnitude
0 Phase B current magnitude
0 Phase C current magnitude
0 Phase-to-earth voltage A
0 Phase-to-earth voltage B
0 Phase-to-earth voltage C
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
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