Accessories
LV40-70 DC voltage booster for 220v small power pumps
A DC booster that lifts a low-voltage array up to the 310 VDC working voltage a 220 VAC pump inverter needs, so fewer panels have to be wired in series.
It is use to booster low voltage input to high voltage to meet solar pumps system application which need high voltage using. For example, For 1/3 phase 220VAC pumps, it should be request Vmp ( working voltage) is 310VDC, Voc ( open loop voltage) is 350VDC. For 3 phase 380VAC pumps, it should be request Vmp 540VDC, and Voc 620VDC. To order to get high voltage output from solar panels, we always connect solar panels in serial. for 37voc solar panels, we need do 10 pcs solar panels connection in serial to get 370VDC, and need do 17 pcs solar panels connection in serial to get 629VDC. And it will cause big investment for small power solar pumps system, and also make it difficult to promote this very good green energy solar pump system solution for people who need more water but less of grid power
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Sold to buyers in Philippines, Turkey, Morocco and beyond.
Problems it solves
Why this model gets specified
A 220 VAC pump set needs about 310 VDC Vmp and 350 VDC Voc. Small or partially shaded arrays cannot reach it without long series strings.
Long series strings lose the whole string when one panel is shaded. Boosting a lower-voltage array avoids that dependency.
Array layout on a small roof or pump shed is constrained. Boosting relaxes the panel count required in series.
Who it is for: Solar pumping installers matching small 220 V pump sets to arrays that cannot reach the required DC working voltage.
Key benefits
DC Voltage booster-low voltage input and high voltage output
No need to built by pass contactor with SCR controlling new technology applying—-innovation and cost saving
Technical specifications
As published for this series. Confirm the exact figures for your model code with Boray before ordering.
| Input voltage | is DC60-90V or DC40-70 can work normally, output voltage is 5~7 times of input voltage. |
|---|---|
| Output voltage | changes according to input voltage so that solar pump inverter can track the maximum power of PV arrays. This product has high efficiency. When power is under 200w, the efficiency is under 90%; when power above 200W, the efficiency can reach above 90%. |
| Efficiency | increase with power increase, maximum efficiency can reach 95%. Normally, this product doesn’t need operation, normal working only need to connect the input wire and output wire correctly. |
Applications
- Low voltage booster device is specially for small power solar pump inverter with low current and high voltage, especial for 0.75kw, 1.5kw 220V pumps, and 0.75kw, 1.5kw 380V pumps.
- Input voltage is DC60-90V or DC40-70 can work normally, output voltage is 5~7 times of input voltage.Output voltage changes according to input voltage so that solar pump inverter can track the maximum power of PV arrays.
- This product has high efficiency.
- When power is under 200w, the efficiency is under 90%; when power above 200W, the efficiency can reach above 90%.
- Efficiency increase with power increase, maximum efficiency can reach 95%.
- Normally, this product doesn’t need operation, normal working only need to connect the input wire and output wire correctly
Before you order the LV40-70 DC voltage booster for 220v small power pumps
Four or five details decide the model code. These are the ones that matter for this series:
- Confirm the supply and rating
- Input voltage: is DC60-90V or DC40-70 can work normally, output voltage is 5~7 times of input voltage.
- Confirm the supply and rating
- Output voltage: changes according to input voltage so that solar pump inverter can track the maximum power of PV arrays. This product has high efficiency. When power is under 200w, the efficiency is under 90%; when power above 200W, the efficiency can reach above 90%.
Every Boray unit is full-load tested before delivery, and the customised VFD programme can adapt function set, protection rating and mechanical arrangement where a standard model does not fit. Operation manuals and wiring diagrams are issued per model code — request them with your enquiry.
Frequently Asked Questions
What does the LV40-70 do?
It boosts low DC input voltage to the higher voltage a solar pump system requires.
What DC voltage does a 220 VAC pump system need?
For 1- or 3-phase 220 VAC pumps, Vmp of about 310 VDC and Voc of about 350 VDC.
Which pumps is this model for?
220 V small power pumps.
Is there a version for 380 V pumps?
Yes, the LV60-90 covers 380 V pump systems, which require about 540 VDC Vmp and 620 VDC Voc.
Does it replace series-connecting the panels?
It reduces the DC voltage the array itself must reach; confirm the array configuration with Boray for your panel model.
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View specifications →LV60-90 DC voltage booster for 380v pumps
A DC booster sized for three-phase 380 VAC pump systems, which need roughly 540 VDC working voltage and 620 VDC open-circuit voltage from the array.
View specifications →
BR600-P Solar Pump Inverter
The BR600-P series listing as published on the source catalogue: solar DC input, MPPT, and the full pump protection parameter group.
Request pricing for the LV40-70 DC voltage booster for 220v small power pumps
Send the motor rating, supply voltage and site conditions. Boray confirms the model code, options and lead time — documentation is available on request.
WhatsApp +86 189 2640 9646 Email the engineering team All contact details