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03 Product IntroductionUser Manual V1.0-2023-03-20
3.3 Features
Power derating
For a safe operation, the inverter will automatically reduce the output power when the operating
environment is not ideal.
The following are the factors that may occur power derating. Please try to avoid them when the
inverter is working.
• Unfavorable environmental conditions, e.g., direct sunlight, high temperature, etc.
• Inverter's output power percentage has been set.
• Over-frequency derating.
• Higher input voltage value.
• Higher input current value.
Reactive power control At night (SVG, optional)
To improve the power generation performance of the power station at night, the inverter
supports night SVG function. Issuing a reactive power compensation command via the power
station monitoring platform, which makes the inverter keep working even when there is no
active power output.
Weak grid support
Short circuit ratio (SCR) of the grid system determines the strength of the grid. The grid is
dened as a weak grid when SCR is less than 10.
The weak grid support function keeps the inverter be on-grid and output current steadly even
when the SCR is higher than 1.2.
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350
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335
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325
320
315
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300
3000 3200 3400 3600 3800 4000 4200 4400 4600 4800 5000
Output power (kW)
Altitude (m)
Example: output power derating due to altitude change
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