SI30 Solar Pump Inverter Manual
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1.3 Cautions in Using
1. In application of this series solar pump inverter, you have to confirm all machine insulation to
prevent damage to the equipment. Moreover, when the motor working in tough environment, please
periodic inspect the electrical insulation to ensure the safety of the system work.
2. If the motor adapter is not consistent with solar pump inverter's rating current (The rating current
of the motor is far smaller than that of solar pump inverter), please adjust the protective value to ensure
safe running.
3. In occasions such as load raises, usually there is negative torque and solar pump inverter breaks
off for over-current or over-voltage. In this case, you should consider choosing the matching brake unit.
4. Solar pump inverter, in a certain output frequency range, can meet the mechanical resonance of
the load equipment. To avoid it, you can set up jumping frequency.
5. As output voltage of the inverter is pulse-wave type, if there is capacity which can improve power
factor or pressure-sensitive resistance which used for thunder-proof in the voltage output side, the solar
pump inverter will break off or its parts will be damaged, so it is necessary to dismantle them. Moreover, it
is proposed not install switch parts like air switch and contactor (if it is necessary to install switch on
output side, please make sure the output electricity of solar pump inverter is zero when the switch is
working).
6. At over 1,000 meters altitude, the inverter’s heat dissipation function worsened due to the thin air,
it is necessary to use less.
7. The inverter output voltage is pulse wave type. If using digital multi-meter measurement, deviation
of the reading will be great. And the deviation is different by using different type of digital multi-meter.
Under normal circumstances, while RMS 380V, digital multi-meter reading is around 450V.
8. Solar panel can be connected in series or parallel. For rated voltage 380V controller, we suggest
solar panel open circuit voltage should be between 620V~750V.
1.4 Technical Specification
Solar pump
inverter
power(kW)
Pump Max solar power
input
(kW)
Max DC
input
voltage (V)
Recommend
Voc voltage (V)
Rated
output
current
(A)
Output
frequency
(Hz)
Rated
power
(kW)
Rated
voltage
(V)
SI30-D1 series, DC90V-400V input,3 phase AC110V-230V output, MPPT voltage range DC90V-400V,for AC110V pumps
0.75 0.75 110 1.0 400 175~380 7A 0-320
1.5 1.5 110 1.95 400 175~380 10A 0-320
SI30-D3 series,DC150V-450V input,3 phase AC220V-240V output, MPPT voltage range DC150V-450V, for AC220V pumps
0.75 0.75 220 1.0 450 360~430 4A 0-320
1.5 1.5 220 1.95 450 360~430 7A 0-320
2.2 2.2 220 2.86 450 360~430 10A 0-320
SI30-D5 series,DC300V-850V input,3 phase AC230V-460V output, MPPT voltage range DC300V-800V,for AC380V pumps
0.75 0.75 380 1.0 850 620～750 2.5 0-320
1.5 1.5 380 2.2 850 620～750 3.7 0-320
2.2 2.2 380 3.3 850 620～750 5.0 0-320
4 3.7 380 5 850 620～750 10 0-320
5.5 5.5 380 8 850 620～750 13 0-320
