3″ DC Solar Water Pump for NZ Bores, Tanks and Stock Water
The 3″ DC Solar Water Pump by Deye is a submersible bore pump that runs directly from solar panels, with no inverter or battery required. Available in 750 W and 1500 W models, it delivers up to 180 m of head or 4.8 m³/h of flow, paired with an MPPT controller, for NZ farms, lifestyle blocks and off-grid homes.
Key Features and Benefits
Direct solar DC operation, no inverter needed
The pump runs on pure DC power from your solar array through a matched solar pump controller. You don’t need an inverter, a generator or a grid connection, so there are fewer components to buy, install and maintain.
MPPT controller for more water per sunny hour
Maximum Power Point Tracking (MPPT) keeps the solar array working at its most efficient point as light levels change. In practice, the pump keeps running at reduced flow in morning, evening and overcast conditions rather than cutting out.
Efficient permanent magnet motor
A permanent magnet synchronous motor (PMSM) with sensorless field-oriented control gives smooth starts and efficient running from a variable solar supply.
Six built-in protection functions
The controller protects the system against over-voltage, under-voltage, overcurrent, low speed, open phase and reverse polarity connection. An indicator light alerts you to a reversed DC connection.
Plastic or stainless steel impeller options
Plastic impeller models are built for high head, lifting water up to 180 m. The stainless steel impeller model delivers the highest flow in the range, up to 4.8 m³/h.
Who Is This Solar Bore Pump For in New Zealand?
The 3″ DC Solar Water Pump suits properties where running power to a bore is expensive or impractical:
- Stock water: pump from a bore to a header tank and gravity-feed troughs across the farm.
- Lifestyle blocks and orchards: fill irrigation tanks during the day for watering gardens, shelter belts and fruit trees.
- Off-grid homes and baches: supply household water tanks without a generator.
- Remote sites: run water where grid connection costs are high.
Because solar pumps only run in daylight, the most reliable setup is to pump into a storage tank during the day and draw water from the tank as needed. The pump is designed for bores with a casing of 3 inches (approx. 76 mm) or larger, including common 4-inch bores.
Need more flow or a mains backup? Compare the 4″ DC Solar Water Pump or the 3″ Hybrid AC/DC Solar Water Pump. For powering your pump, browse our LONGi solar panels.
3″ DC Solar Water Pump Specifications
| Specification | 3F750/PC3.8-95 | 3D1500/PC3.8-180 | 3D1500/SC4.8-140 |
|---|---|---|---|
| Impeller material | Plastic | Plastic | Stainless steel |
| Power | 750 W (1 HP) | 1500 W (2 HP) | 1500 W (2 HP) |
| Maximum flow | 3.8 m³/h | 3.8 m³/h | 4.8 m³/h |
| Maximum head | 95 m | 180 m | 135 m |
| Outlet size | 1.25″ | 1.25″ | 1.25″ |
| Controller model | DYF-900DC | DYD-1500DC | DYD-1500DC |
| Power input | Solar pure DC, max input current 20 A | ||
| Controller technology | Built-in solar MPPT | ||
| Motor | PMSM, sensorless field-oriented control | ||
| Controller operating humidity | 30% to 90% | ||
| Protection | Over/under-voltage, overcurrent, low speed, open phase, reverse polarity | ||
How much water will it pump? Flow at different heads
| Flow rate | 3F750/PC3.8-95 | 3D1500/PC3.8-180 | 3D1500/SC4.8-140 |
|---|---|---|---|
| 20 L/min (1.2 m³/h) | 78 m head | 143 m head | 126 m head |
| 40 L/min (2.4 m³/h) | 49 m head | 90 m head | 98 m head |
| 60 L/min (3.6 m³/h) | 11 m head | 20 m head | 62 m head |
| 70 L/min (4.2 m³/h) | – | – | 45 m head |
Total head includes the vertical lift from the bore water level to the outlet plus friction losses in the pipe. Choose a model whose curve comfortably covers your total head at the flow you need. Full performance curves are in the manufacturer data sheets: plastic impeller (3PC-3.8T) and stainless steel impeller (3SC-4.8T).
What’s in the Box
- 3″ DC submersible pump unit
- matched solar pump controller, DYF-900DC or DYD-1500DC depending on model
- cable, accessories, user manual
Installation, Warranty and Support in New Zealand
We recommend installation by a qualified installer or registered electrician. Solar array wiring in New Zealand should comply with AS/NZS 5033. Never lift or lower the pump by its power cable; use a stainless steel safety rope.
All purchases from Cybotix Energy are covered by your rights under the Consumer Guarantees Act 1993. [CONFIRM: manufacturer warranty period and terms.] Not sure which model suits your bore depth and water needs? Contact our team with your bore depth, water level and daily water requirement, and we’ll help you size the pump and solar array.
How deep a bore can a 3-inch DC solar water pump lift water from?
It depends on the model: the 750 W pump reaches up to 95 m of head, the 1500 W plastic impeller model up to 180 m, and the 1500 W stainless steel model up to 135 m. Remember that total head includes pipe friction as well as vertical lift, and flow drops as head increases, so choose a model with capacity to spare.
Do I need an inverter or battery to run a DC solar water pump?
No, the 3″ DC Solar Water Pump runs directly from solar panels through its matched MPPT controller, with no inverter required. You don’t need a battery for daytime pumping either. Most NZ users pump into a storage tank during daylight hours and draw water from the tank at night or on cloudy days.
Will a solar water pump work on cloudy days in New Zealand?
Yes, it keeps pumping on overcast days, but at a lower flow rate because the panels produce less power. The MPPT controller helps extract as much energy as possible in low light. The pump does not run at night, so a storage tank sized for a few days’ use is the best way to cover periods of poor weather.
What size bore does a 3-inch solar submersible pump fit?
A 3-inch solar pump is designed for bores with a casing diameter of 3 inches (about 76 mm) or larger. That includes the 4-inch bores common on NZ farms. The pump should sit below the lowest expected water level but above any sediment at the bottom of the bore, with enough clearance around it for water to cool the motor.
Should I choose the plastic or stainless steel impeller model?
Choose based on whether you need height or volume. The 1500 W plastic impeller model gives the highest lift, up to 180 m, making it the pick for deep bores. The 1500 W stainless steel impeller model delivers the most water, up to 4.8 m³/h. For moderate depths and smaller water needs, the 750 W model is the most economical option.
Can I use a solar bore pump for stock water troughs on a farm?
Yes, stock water is one of the most common uses for a solar bore pump. The usual setup is to pump from the bore into an elevated header tank during the day, then gravity-feed water to troughs across the farm. This avoids running power lines to remote bores and removes generator fuel costs.
How many solar panels do I need for a 3-inch DC solar water pump?
Your solar array should have a total peak wattage slightly higher than the pump’s power rating, so around 750 W or more for the 750 W model and 1500 W or more for the 1500 W models. The array voltage must also fall within the controller’s input range. Contact us with your site details and we’ll size the array for you.
What warranty comes with the 3″ DC Solar Water Pump in NZ?
Every purchase is covered by your rights under the New Zealand Consumer Guarantees Act 1993, in addition to the manufacturer’s warranty. If you have a problem with your pump or controller, contact Cybotix Energy directly and our team will help you with troubleshooting, repairs or a claim.
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