Sonel MPI-540 - Configuration of the Loss Calculator; Inverter Efficiency

MPI-540 ● MPI-540-PV – BRIEF USER MANUAL
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The financial loss can be estimated based on the live mode readings in terms of:
 one hour,
 one day,
 one month
 one year.
When one of the above options is activated (  ), the table will display data relevant to the
selection.
5.8.2 Configuration of the loss calculator
After the icon has been selected, the calculator configuration panel appears. It is possible to
switch between screens using the icons.
On the first screen, set the parameters of the wire, to which the analysis applies, namely:
 for phase conductors L:
o number of cores in a phase,
o cross section of cores in mm
2
,
 for neutral conductors N:
o number of neutral cores,
o cross section of cores in mm
2
,
 length of the line in metres,
 line material – copper or aluminium.
Based on the above parameters, the calculator will calculate the power loss in the analysed line.
On the second screen, set the parameters defining the financial loss, i.e:
 cost of 1 kWh of active energy,
 cost of 1 kWh of reactive energy at power factor PF ≥ 0.8,
 cost of 1 kWh of reactive energy at power factor PF < 0.8,
 currency.
To change the currency:
 tap the field with the current unit,
 enter a new unit using the on-screen keyboard.
5.9 Inverter efficiency
See sec. 3.18.1, 3.18.2.