Ambient Temperature; Solar Inverter Pv Input Dc Voltage Range - Delta M Series Operation And Installation Manual

2.4

Ambient temperature

The solar inverter can be operated in an ambient temperatures from 22 °F to 149 °F (-30°C to
+60°C). The following diagram illustrates how the output power of the solar inverter is reduced
automatically in accordance with ambient temperature.
The device should be installed in a well-ventilated, cool and dry location.
Due to tolerrance of temperature sensor and efficiency difference under different PV voltage, this
derating curve may be a litter different from actual behaviors of unit.
9000
Pac(W)
8000
7680W
7000
5760W
6000
5000
4000
3000
2000
1000
Figure 1: Typical derating curve of M series solar inverter
50V
0
0 100
2.5

Solar inverter PV input DC voltage range

6000
Pac(W)
4800W
5000
3840W
4000
3000
2000
1000
50V
0
0 100
Figure 2: M4-TL-US / M5-TL-US DC voltage range
10
270V
120V
200
120V
180V 220V
200 300
M8-TL-US
M6-TL-US
480V
300 400
M5-TL-US
M4-TL-US
Voc*
range
480V
400 500
non-operating
range
Voc*
range
*Voc:range
of open circuit
PV input(V)
550V
500 600
non-
operating
*Voc:range
of open
PV input(V)
550V
600 700
700