Siliken se2.8i, Руководство пользователя

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Technical Documentation
65
user’s manual inverter SE2.8i - SE3.8i - SE4i - SE5i
5.3 De-rating Operation
The occasions when the SE inverter will take into account and then regulate the output and/or restrict the input power to ensure the system
is in a safe operation are described in detail below.
Temperature
The SE inverter will monitor the temperature on the heatsink. Once the temperature exceeds 78°C (172.4°F) the system will reduce the output
power until the temperature drops under the critical value. The SE inverter will shut down the power output to the grid if the temperature reaches
82°C (179.6°F). If this occasion happens often, it is necessary to check whether the inverter is mounted at an appropriate place with good
ventilation and not directly exposure to the sunshine.
Input DC current
When the input current from the PV strings is about to exceed the maximum limit, the SE inverter will restrict it to the operating limit in order
to prevent damage to the inverter. If this occasion happens frequently, it is necessary to check whether the PV array is configured properly to
supply the DC current within the maximum limit of the inverter.
Output AC power
The maximum power that the SE inverter feeds to the grid is limited according to the specifications listed in Section 1.2. Even if the output
current does not up to the maximum current limit, the output power may still be limited in order to keep the output power within the maximum
power limit. It often occurs in case the output voltage is higher then nominal AC voltage.