94 The ESI-Manager user interface
Manual Energy Storage Inverter ESI-S
Table 40: Summary of parameters displayed in the ‘Overview’ menu
Parameter
name
Unit Description
Vrms
V
4-wire mode: RMS value of all the line-to-neutral 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
inverter
DC
capacitor
voltage
Imbalance
%
Indicates
the
imbalance
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
ESI Irms
A
RMS value of all the inverter 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: calculation 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
