21
Instruction Manual
PV-Monitor-M
6�1�2� SOLAR FRACTION
The solar fraction of a photovoltaic energy installation is the ratio between the self-consumed
solar energy and the total energy required for a specific application.
Solar fraction =
PV Production (kWh)
Consumption (kWh)
Figure 14:Solar fraction widget�
An alarm based on the estimated annual average solar fraction has been programmed to help
the user diagnose a low solar fraction (an economic analysis is required for this estimate).
In the example shown in
, the alarm has been activated and this indicates that the
solar fraction of the current month (11%) does not reach the estimated annual average target
(15%).
6�1�3� UTILIZATION RATE AND ALARMS
This widget shows the alarms that affect the performance of the PV energy installation to help
the user diagnose the anomalous operation of their PV energy installation.
Figure 15:Alarms widget�