ABB PVI-3.0-TL-OUTD-S-US, Руководство по эксплуатации продукта

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C013C7
7 - Appendix
A
utomatic power reduction
In order to maintain safe inverter operation under adverse environmental conditions or due to improper input
voltages, the unit automatically reduces the amount of power it feeds to the grid. The conditions for power
reduction due to environmental conditions and input voltage can occur at the same time, but the power reduction
will always be determined by the more severe factor.
Power reduction due to temperature
Power reduction due to ambient or inverter temperature depends on many operating parameters, such as input
voltage, grid voltage and power available from the photovoltaic arrays. The inverter may reduce its output
power during the day according to the value of these parameters. The following graphs show the automatic
reduction in output power in relation to ambient temperature.
In any case, the inverter ensures top power up to 40°C ambient temperature, when it is not directly exposed
to the sun.
Power reduction due to input voltage
The graphs below show automatic power output derating when input or output voltage is too high or too low.
Necessary conditions for power derating due to environmental conditions and to input voltage can occur at the
same time, but in this instance power derating will always consider the lowest value detected.
Output power with two DC sections operating