ABB PQFM - Page 103

Manual Power Quality Filter PQFM  The PQF-Manager user interface 103
Table 43: Summary of parameters displayed in the ‘Overview’ menu
Parameter name
Unit
Description
Vrms
V
4
-
wire mode: RMS value of all the line
-
to
-
neut
ral voltages
3-wire mode: RMS value of all the line-to-line voltages
THDV
%
4
-
wire mode: Total harmonic distortion of all the line
-
to
-
neutral
voltages
3-wire mode: Total harmonic distortion of all the line-to-line
voltages
V1
V
4
-
wire mode: RMS value of
the fundamental component of all the
line-to-neutral voltages
3-wire mode: RMS value of the fundamental component of all the
line-to-line voltages
Frequency
Hz
Network frequency
V dc bus
V
Active filter DC capacitor voltage
Imbalance
%
Indicates the imb
alance in supply voltage (%value)
Irms
A
4
-
wire mode: RMS value of all the line currents and the neutral
current
3-wire mode: RMS value of all the line currents
THDI
%
Total harmonic distortion of all the line currents.
I1
A
RMS value of the fundamental
component of all the line currents
PQF Irms
A
RMS value of all the filter currents, including neutral current for 4
-
wire configuration
P
W,
kW,
MW
Active power in the network at the location of the CTs
P > 0: Load absorbing active power
P < 0: Load generating active power
Q
var,
kvar
Mvar
Reactive power in the network at the location of the CTs
Q > 0: Inductive reactive power
Q < 0: Capacitive reactive power
S
VA,
kVA,
MVA
Apparent power in the network at the location of the CTs
PF
-
Power factor: ca
lculation based on the fundamental and the
harmonic values of the measurements. Measurement only valid
for quasi-balanced loads.
cos
ϕ
-
Displacement power factor: calculation based on the
fundamental values of the measurements.
: System has inductive behavior
: System has capacitive behavior
cos ϕ > 0: load absorbing active power
cos ϕ < 0: load generating active power
T Control
°C/°F
Main control board temperature of the selected module
T Control max
°C/°F
Main control board temperature of the
hottest module in the
group