User Manual
10 Operation of LCD Display Panel
79
10.14
Special Settings for Italy
If the “Countries” selection is “IT” (Italy), several LCD menus and operation methods
are different from other countries.
The differences focus on “Run-param” and “Pro-param” as shown below.
10.14.1 Over-frequency Derating Setting for Italy
If the “Countries” selection is “IT” (Italy), the “Derating Slope”* will display in the
“Run-param” screen.
When the grid frequency is between 50.3Hz and 51.5Hz, inverter will decrease
power according to the “Derating Slope”.
Default derating slope (Pm/Hz, Pm is the power before derating): 83.33%. Range:
40% ...100%.
Note: “Derating Slope”* is the power derating slope. Power derating slope = 100 /
(Grid frequency
×
Frequency derating slope). Frequency derating slope range:
2% ...5%.
Fig. 10-5
“IT” Over-frequency Derating Curve
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