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eSure™ MPPT Solar Converter Module User Manual (UM1S482000E3)
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Rev. J
10
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Power Derating Based on Input Voltage: The solar converter power varies with changes in input voltage
and output voltage. It uses an advanced power limitation method. The lower input threshold is 200
VDC. The solar converter can provide its maximum rated power (2000 W) as long as the input voltage
is within the range of 200 VDC to 420 VDC. Below 200 VDC, and down to 120 VDC, the solar converter
will continue to operate normally but will be in a power derating mode. The relationship between the
output power and input voltage is illustrated in
Figure 2:
Power Derating Based on Input Voltage
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Power Derating Based on Temperature: With an input voltage in the range of 200 VDC to 250 VDC and
an output voltage range between 50 VDC and 56 VDC, the solar converter delivers full power when
operating at an ambient temperature of +65 °C (+149 °F) or below. Each solar converter continuously
monitors the ambient temperature surrounding the power conversion circuit. If this temperature for any
reason (such as a high ambient temperature) increases above approxi65 °C (+149 °F), the solar
converter will not shut down. Rather, the solar converter limits its maximum output power to maintain
the temperature of the power conversion circuit within design parameters. Operation b65 °C
(+149 °C) and +80 °C (+176 °F) will result in output power being decreased. Full power capability is
restored when the temperature decreases to below approxi65 °C (+149 °F). Refer to
to view the relationship between the output power and the ambient temperature with the input voltage
and output voltage within these ranges.
Other power rating values are as follow:
a)
At an ambient temperature of +65 °C (+149 °F), the power delivered by the solar converter is
2000 W.
b)
At an ambient temperature of +70 °C (+158 °F), the power delivered by the solar converter is
1500 W.
With an input voltage in the range of 250 VDC to 420 VDC and an output voltage range between 48
VDC and 50 VDC or between 56 VDC and 58 VDC, the solar converter delivers full power when
operating at an ambient temperature of +55 °C (+131 °F) or below. Each solar converter continuously
monitors the ambient temperature surrounding the power conversion circuit. If this temperature for any
reason (such as a high ambient temperature) increases above approxi55 °C (+131 °F), the solar
converter will not shut down. Rather, the solar converter limits its maximum output power to maintain
the temperature of the power conversion circuit within design parameters. Operation b55 °C
(+131 °C) and +80 °C (+176 °F) will result in output power being decreased. Full power capability is
restored when the temperature decreases to below approxi55 °C (+131 °F). Refer to
view the relationship between the output power and the ambient temperature with the input voltage and
output voltage within these ranges.
0.0%
20.0%
40.0%
60.0%
80.0%
100.0%
120.0%
0
50 100 150 200 250 300 350 400 450
%
of
Ou
tp
ut
P
ow
er
Input Voltage (VDC)
Output Power vs. Input Voltage and Vo > 48 V
at Temp ≤55
℃