
6 User Manual
1.6. System Sizing
When dimensioning a photovoltaic system, it must be ensured that the open circuit
voltage of the PV string never exceeds the maximum permissible input voltage of 1000V
DC. The PV string open circuit voltage during parallel string operation is 910V. Higher
voltages may result in permanent damage to the inverter.
The selection of PV string output should be based on the optimum utilization of the invested capital
compared to the expected annual energy yield from the system. This optimization depends on local
weather conditions and should be considered in each individual case.
The inverter incorporates an input power limiting device, which automatically keeps the power at
levels that are safe for the inverter. The limitation depends mainly on internal and ambient
temperatures. The limitation is calculated continuously and always allows the maximum possible
amount of energy to be produced.
Please use the tool supplied by Trannergy when dimensioning a photovoltaic system.
Содержание TRM025KTL
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