HT instruments SOLAR300N - Manual (Page 19)

SOLAR300 - SOLAR300N
EN - 17
5.2. REAL TIME VALUES
Fig. 18: GENERAL MENU screen - Real time values section
In this section the real time measured values of parameters both on input channels and
internally calculated are shown by meter. In particular the following are shown:
1. Values of the electrical and environmental quantities (irradiation, temperature) of a
photovoltaic system for generating single-phase or three-phase electric power.
2. Values regarding the maximum efficiency point.
3. AC TRMS voltages, currents and all kind of electrical parameters for any single phase and
total, Flicker values and voltages Unbalanced.
4. Voltage and current waveforms for any single phase and total.
5. Voltage and current harmonics up to 49
th
component for any single phase and total both in
numerical and histograms graphical format in absolute or percentage value with respect to
each fundamental signal.
6. Vectorial diagrams of each voltage and current with the respective phase angles in order to
define the correct nature of system loads under test.
The type of data displayed is determined by the setting of the instrument in the Analyzer
Configuration mode (see §. 5.3). With reference to PV systems only, further in this manual, the
acronym MPPT (Multiple Power Point Tracker) shall indicate the characteristic of the DC/AC
converter (inverter), capable of maximizing the DC power which can be taken from the
photovoltaic field and the acronym PRp shall indicate the Performance Ratio evaluated through
active powers. See § 10.3 for further details.
5.2.1. Single-MPPT photovoltaic system screen – Single-phase output
The instrument displays the following parameters:
DC 
PV 
 AC
PARAMETERS CAPTION:
PRp:
 Performance Ratio (ref. active powers)
Pdc  DC power at inverter input

DC
 Photovoltaic panel performance
Vdc  DC voltage at inverter input
Idc  DC current at inverter input
Pac  AC power at inverter output
Pf  Power factor at inverter output

AC
 Inverter performance
Vac  AC voltage at inverter output
Iac  AC current at inverter output
Tc  Default temperature of photovoltaic panels
Te  Default environmental temperature
The display of the Te or Tc values in blue indicates that
the mentioned values are the default ones, as the ones
measured by SOLAR-0x are not available (see §
5.3.2.4). If the remote unit SOLAR-0x is connected to the
main unit, the following values are also available:
Irr
 Solar irradiation
Pnom  Nominal power of the photovoltaic system
Tc  Measured temperature of the phot. panels
Te  Measured environmental temperature
Fig. 19: Page of single-phase photovoltaic systems