Sungrow SG2500U-MV User Manual

System Manual 10 MV Station Functions
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requirements document within the time specified in the local standards or regulations.
Sungrow‟s MV Station meets the abovementioned requirements.
10.6 Temperature Derating
When the ambient temperature is below 45℃, the MV Station can operate at 110% of the
overload condition. When the temperature reaches 50℃, MV Station can keep the nominal
power output. When the temperature is above 60℃, MV Station enters into protection
mode.
Temperature (℃)
1.0
1.1
0 5045
Nominal value
60
1.2
L1 = 2%Pn/℃
L2 = 10%Pn/℃
-30
P/Pn
Fig. 10-3 MV Station temperature derating function
Ambient temp. T
Operation situation
T<-30℃
The MV Station starts with the aid of auxiliary heater
-30℃<T≤45℃
Operate for a long time at 110% of the overload condition
45℃<T≤50℃
Operate with derating at 2%Pn/℃
50℃<T≤60℃
Operate with derating at 10%Pn /℃
T>60℃
Enter protection mode;
Automatically restart when temperature drops below 50℃
10.7 MPPT
Maximum Power Point Tracking (MPPT) is a technique that the MV Station uses to get the
maximum power from the PV arrays. PV arrays have a complex relationship between solar
irradiation, temperature and total resistance that produces a non-linear output efficiency
known as the I-V curve.

Sungrow SG2500U-MV Specifications

General

Brand	Sungrow
Model	SG2500U-MV
Category	Inverter
Language	English