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2.4
Ambient temperature
The inverter can be operated in ambient temperatures from -22 °F to 149 °F (-30°C to 65°C). The
following diagram illustrates how the output power of the solar inverter is reduced automatically in
accordance with ambient temperature.
It's better to install the device in a well-ventilated, cool and dry location to avoid any power derating.
Due to tolerance of temperature sensor and efficiency difference under different PV voltages, this
derating curve may be a little different from actual behaviors of unit.
120%
100%
80%
60%
40%
20%
0%
-25
Figure 5: Typical temperature derating curve of Delta Ex_BDI series inverter
2.5
Inverter PV input DC voltage range
12000
Pac (W)
10000
8000
6000
4000
1786W
2000
50V
0
0
Figure 6: Voltage Range of Ex_BDI series inverter
-15
-5
5
15
Ambient Temprature(℃)
PV voltage derating curve for Ex-BDI series
200V
225V
100
200
25
35
45
E10_BDI
E8_BDI
E6_BDI
E4_BDI
280V
480V
300
400
55
65
75
Non-operating
range
PV input(V)
500
600
15
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