Description

The 4HP Doyin Hybrid Submersible Pump is a high-capacity borehole pump designed for farms, irrigation projects, institutions, estates and commercial water systems that require strong pressure together with high water output.

This model is powered by a 3kW or 3000W motor, delivers up to 9.6m³/h, and has a maximum head of 190 metres. Its hybrid design allows operation from both solar DC power and compatible AC electricity, making it useful in areas where grid electricity is expensive or unreliable.

Comparable Doyin 4SDS10-3000W AD pumps currently sold in Kenya are rated at 4HP, 3000W, 190m maximum head and approximately 10m³/h maximum flow. This closely matches the 9.6m³/h version described here.

4HP Doyin Hybrid Pump Specifications

Feature	Specification
Brand	Doyin
Pump Type	Hybrid Submersible Borehole Pump
Motor Power	4HP
Rated Power	3kW / 3000W
Maximum Head	190m
Maximum Flow	9.6m³/h
Maximum Output	9,600 litres/hour
Approx. Output per Minute	160 litres/minute
Power Supply	AC/DC Hybrid
Comparable Model	Doyin 4SDS10-3000W AD
Typical DC Voltage on Comparable Model	280V DC
Typical AC Voltage	240V AC
Outlet	2 Inches on comparable 3kW hybrid version
Controller	MPPT Controller
Motor Type	Permanent Magnet Brushless Motor
Pump Diameter	About 4 Inches on comparable model
Body	Stainless Steel
Main Applications	Boreholes, Irrigation, Tank Filling, Farms

A current Kenyan Doyin 3000W hybrid listing specifies 280V DC / 240V AC operation, a 2-inch outlet, stainless steel impeller and an MPPT controller.

9,600 Litres Per Hour Water Output

The pump has a maximum flow rate of:

9.6m³/h

This equals:

9,600 litres per hour

or about:

160 litres per minute.

That amount of water is useful for projects where small domestic borehole pumps cannot meet demand.

Theoretical Water Delivery

Pumping Time	Maximum Water Volume
1 Hour	9,600 L
2 Hours	19,200 L
4 Hours	38,400 L
6 Hours	57,600 L
8 Hours	76,800 L
10 Hours	96,000 L

These figures represent maximum theoretical output. Actual water delivery depends on pumping head, pipe losses, solar power and borehole yield.

Comparable Doyin 4SDS10-3000W models are listed at approximately 10,000L/h, showing that this 9.6m³/h version belongs to the same high-flow class.

Maximum Head of 190 Metres

The 190m maximum head allows the pump to handle demanding borehole installations.

It can be used where water has to travel from a deep pumping level to:

• Elevated storage tanks
• Irrigation systems
• Farm reservoirs
• Buildings on higher ground
• Long delivery pipelines

A current Doyin 4HP hybrid pump with a 3000W motor is also rated at 190m maximum head.

190m Head Does Not Mean a 190m Installation Depth

Maximum head and borehole depth are not the same measurement.

The pump must overcome Total Dynamic Head, which includes the vertical lift plus pressure and friction losses.

For example, suppose a borehole system has:

System Factor	Head
Dynamic Water Level	110m
Tank Height	15m
Pipe/Fitting Losses	15m
Total Dynamic Head	140m

The important question is how much water the pump delivers at approximately 140m head.

A current comparable 4HP Doyin model with a 190m maximum head is recommended for boreholes up to about 149m, illustrating why maximum head should not simply be treated as recommended borehole depth.

High-Efficiency 3000W Motor

The pump uses a 3000W or 3kW motor, equivalent to approximately 4HP.

This power level provides a useful middle ground between smaller 2HP and 3HP pumps and larger commercial 5.5HP or 10HP systems.

A current Doyin 4SDS10-3000W AC/DC model is officially listed by Kenyan suppliers as 3kW / 4HP.

Permanent-Magnet Brushless Motor

Comparable 4HP Doyin hybrid pumps use a high-efficiency permanent-magnet brushless motor.

Brushless technology offers several practical benefits:

• No carbon brushes to replace
• Reduced internal mechanical wear
• High electrical efficiency
• Good solar performance
• Lower maintenance requirements
• Smooth motor control

This type of motor is especially suited to solar borehole systems where efficient use of available power is important.

AC/DC Hybrid Power System

The main advantage of this Doyin pump is its ability to work with two different power sources.

Solar DC Power

During the day, a correctly sized solar array can supply DC power directly to the hybrid controller.

The pump can therefore be used on remote farms without depending completely on grid electricity.

AC Electricity

When solar power is unavailable, the system can use compatible AC power.

Depending on the controller and installation, this can come from:

• Grid electricity
• A correctly sized generator

A current comparable Doyin 4HP model supports both AC grid/generator power and DC solar power.

280V DC and 240V AC on Comparable Model

One current Kenyan 3000W Doyin Solar/AC pump specifies:

280V DC / 240V AC.

This is useful when designing the solar array, but the exact controller label must always be checked before connecting panels.

Do not assume that every 4HP Doyin hybrid pump uses exactly the same input voltage.

MPPT Controller

Comparable 4HP hybrid models are supplied with an MPPT controller.

MPPT means Maximum Power Point Tracking.

Its job is to help the system obtain useful energy from the solar panels as sunlight changes during the day.

Depending on the exact controller, it may also provide protection against:

• Dry running
• Overcurrent
• Overload
• High voltage
• Low voltage
• Motor faults

The exact protection functions should be checked on the supplied controller manual.

Recommended Solar Panel Capacity

One current Kenyan supplier recommends approximately:

8 × 550W solar panels

for the Doyin 4SDS10-3000W hybrid pump.

This gives:

8 × 550W = 4,400W

or approximately:

4.4kWp of solar capacity.

This is higher than the 3kW motor rating, which is normal in solar pumping because panel output changes with temperature, sunlight, dust and other conditions.

Do Not Connect Eight Panels Without Checking Voltage

Panel quantity alone is not enough.

The installer must check:

• Panel Voc
• Panel Vmp
• Controller maximum input voltage
• MPPT voltage range
• Maximum current
• Series string design
• Temperature correction

If the controller requires a high DC operating voltage, the panels may need to be connected in series.

Direct Solar Operation

A comparable Doyin 4HP hybrid model is designed for direct DC solar operation without a separate conventional inverter.

The hybrid controller performs the required power conversion and motor control.

This can simplify the pumping system compared with using a normal AC borehole pump together with a separate solar inverter.

2-Inch Outlet

A current Kenyan 3000W Doyin hybrid model with 190m head uses a 2-inch outlet.

This outlet size suits medium-to-high water flow applications.

Suitable rising mains may include correctly rated:

• HDPE pipe
• UPVC pressure pipe
• Galvanized steel pipe

The pipe’s pressure rating is particularly important in deep installations.

At high heads, ordinary low-pressure pipe can fail.

4-Inch Borehole Pump Body

The comparable Doyin 4SDS10-3000W pump has a 4-inch pump diameter/class.

Before installation, confirm that the borehole casing provides enough clearance for:

• Pump body
• Electrical cable
• Cable guards
• Water circulation around the motor

Stainless Steel Construction

Current Doyin 4HP listings specify a stainless steel pump body or stainless steel water-contact components.

One supplier specifically lists:

• Stainless steel outlet
• Stainless steel oil cylinder
• Stainless steel connections
• Stainless steel impeller

Stainless steel improves resistance to corrosion in clean borehole-water applications.

High-Flow Multistage Design

The Doyin 4SDS10 is a high-flow multistage borehole platform.

Inside the pump are several pumping stages.

Each stage adds pressure to the water, allowing the pump to produce the high head needed for deep installations.

The design therefore combines:

• High pressure
• High water flow
• Compact borehole installation
• Deep-water lifting capability

Best for Commercial Irrigation

A flow rate approaching 9,600L/h gives this pump good potential for irrigation.

It can support properly designed:

• Drip irrigation
• Sprinklers
• Greenhouses
• Orchards
• Vegetable farms
• Fruit farms

The irrigation designer should check actual flow at the required operating pressure.

A maximum-flow figure alone cannot determine how many sprinklers or drip lines the pump can run.

Fast Storage Tank Filling

The pump is also suitable for filling large water tanks.

At maximum theoretical output:

Tank Capacity	Approx. Minimum Filling Time
5,000 L	31 minutes
10,000 L	1 hour 3 minutes
20,000 L	2 hours 5 minutes
30,000 L	3 hours 8 minutes
50,000 L	5 hours 13 minutes

Actual filling times increase as pumping head rises.

Suitable for Livestock Farms

The pump can supply water for high-demand livestock operations, including:

• Dairy farms
• Cattle farms
• Poultry farms
• Pig farms
• Mixed farms

A large storage tank can be filled during sunny hours and used as a water reserve overnight.

This reduces the need for battery storage in many solar pumping applications.

Suitable for Institutions and Estates

A 4HP hybrid pump can also serve:

• Schools
• Hospitals
• Hotels
• Apartment blocks
• Churches
• Lodges
• Commercial properties

The hybrid design is particularly useful where uninterrupted water availability is important.

4HP Doyin vs 3HP Doyin Hybrid Pump

Feature	3HP Doyin	4HP Doyin
Motor	2.2kW	3kW
Maximum Head	Around 155m	190m
Maximum Flow Class	Around 9.6–10m³/h	Around 9.6–10m³/h
Solar Array on Comparable Model	Around 6 × 550W	Around 8 × 550W
Best Use	Deep Boreholes	Deeper/High-Pressure Systems

A current 3HP Doyin 4SDS10 model is rated at 155m head, while the 4HP version reaches 190m.

The main reason to move to the 4HP version is therefore greater head capability rather than simply greater maximum flow.

4HP Doyin vs 5.5HP High-Head Pump

A 4HP pump should not automatically be replaced with a larger model.

The right pump depends on the borehole.

The 4HP 190m model is well suited where high flow is needed at medium-to-deep borehole conditions.

A higher-powered pump may be necessary when:

• Total Dynamic Head exceeds the 4HP pump’s useful range
• Greater operating pressure is required
• Borehole depth is much greater

Installing an unnecessarily large pump increases purchase cost and solar-array requirements.

Borehole Yield Comes First

Before buying this pump, obtain a borehole test report.

The report should show:

• Borehole depth
• Static water level
• Dynamic water level
• Borehole yield
• Drawdown
• Recommended pumping rate

If the borehole safely produces only 6m³/h, a pump capable of 9.6m³/h cannot create more groundwater.

Over-pumping may cause the water level to fall until the pump starts running dry.

Calculate Total Dynamic Head

For correct pump selection, calculate Total Dynamic Head.

For example:

Dynamic water level = 120m

Tank height = 15m

Pipe and fittings loss = 10m

Total:

120 + 15 + 10 = 145m TDH

You would then check the pump curve to see what flow the 4HP pump provides at around 145m.

This is more accurate than simply checking the 190m maximum head figure.

Why Pump Curves Matter

The maximum 190m head occurs near the low-flow end of the pump curve.

The maximum 9.6m³/h flow occurs at a lower head.

Therefore:

190m maximum head + 9.6m³/h maximum flow should not be treated as one simultaneous operating point.

Current online listings for a comparable 4SDS10-3000W model likewise publish the maximum head and maximum flow as separate performance limits.

Recommended Installation Components

A complete installation normally requires:

• 4HP Doyin hybrid pump
• MPPT controller
• Solar panels
• Solar mounting structure
• DC protection
• AC protection
• Submersible cable
• Rising main
• Non-return valve
• Borehole head
• Water-level protection
• Tank
• Float switch

Component sizes depend on borehole depth and installation design.

Dry-Run Protection Is Important

The pump depends on water around the motor for proper operation and cooling.

Running the pump dry can damage:

• Motor
• Bearings
• Seals
• Pump stages

Use suitable dry-run protection or borehole water-level sensors.

Cable Sizing

A 3kW motor can draw significant electrical current.

Long undersized cables create voltage drop and waste energy.

Cable size should therefore be calculated using:

• Motor power
• Controller output
• Cable length
• Current
• Installation depth
• Permitted voltage drop

Do not select borehole cable based on price alone.

Pipe Pressure Rating

A pump capable of generating 190m head can create substantial pressure.

A rough water-column conversion means 190m of water represents around 19 bar under ideal static conditions.

This does not mean every part of the operating system will always see 19 bar, but it demonstrates why correct pressure-rated pipe and fittings are essential.

Installation Position

Install the pump:

• Vertically
• Above the borehole bottom
• Below the dynamic water level
• With enough water around the motor
• Without supporting it by the electrical cable

Leaving adequate distance above the bottom reduces the risk of pumping sand and sediment.

Solar Pumping Without Batteries

For many farm applications, batteries are not necessary.

Instead, the solar panels run the pump during daylight hours and water is stored in a tank.

The stored water can then be used:

• At night
• During cloudy periods
• During peak irrigation periods

Water storage is often simpler and cheaper than installing a large battery bank for a 3kW pump.

Maintenance

A Doyin submersible pump does not require daily servicing, but system performance should be monitored.

Regularly check:

• Solar panels
• Controller display
• Pump current
• Water output
• Tank filling time
• Cable connections
• Pipe leaks
• Borehole water level

A change in output can indicate a problem before complete pump failure occurs.

Common Causes of Reduced Flow

Reduced water delivery can result from:

• Lower borehole water level
• Dirty solar panels
• Cloudy conditions
• Undersized solar array
• Blocked pipe
• Pipe leakage
• Worn impellers
• Sand damage
• Low voltage

Identifying the cause early can prevent more expensive repairs.

Benefits of the 4HP Doyin Hybrid Pump

The main advantages include strong 190m head capability, up to 9,600L/h flow, solar and AC operation, a high-efficiency brushless motor, stainless steel construction and MPPT controller compatibility.

Its 3kW motor is powerful enough for demanding farm and institutional applications without requiring the much larger solar arrays needed by 7.5kW or 9.2kW borehole pumps.

How to Choose This Pump

Choose this Doyin 4HP hybrid model when your borehole and water system require:

• High water volume
• Head below its usable performance range
• Solar pumping
• AC backup
• Approximately 3kW motor capacity
• Irrigation or large tank filling

Always match the pump to the borehole yield and actual TDH.

4HP Doyin Hybrid Pump Price in Kenya

Current Kenyan listings for the comparable Doyin 4SDS10-3000W AC/DC hybrid pump show prices of approximately KSh 50,000 to KSh 60,000.

Rhema Solar currently lists the 4HP 3000W model at about KSh 50,000, while Macire lists a comparable model around KSh 50,295. Estrex Solar lists a 3000W Doyin Solar/AC pump with controller at approximately KSh 60,000.

Configuration	Current Kenya Price
Doyin 4HP AC/DC Hybrid Pump	Around KSh 50,000
Comparable 4SDS10-3000W Model	Around KSh 50,295–50,800
4HP Pump with MPPT Controller Package	Around KSh 60,000
Complete Solar Pump System	Higher depending on panels and installation

The final project cost can increase once the solar panels, mounting frame, cable, rising main and installation are included.

Why Buy a 4HP Doyin Hybrid Submersible Pump?

The 4HP Doyin Hybrid Submersible Pump in Kenya is a strong choice for users who need more pressure than a typical 3HP pump but do not need the very large capacity of a 10HP system.

With its 3kW motor, 190m maximum head and 9.6m³/h maximum flow, it is suitable for deep boreholes, irrigation, livestock farms, estates, institutions and high-volume tank filling.

Comparable Doyin 4SDS10-3000W models also provide AC/DC operation, direct solar compatibility, stainless steel construction and high-efficiency brushless motors.

The hybrid system can reduce electricity costs by pumping with solar power during the day while still giving the user the option of compatible AC electricity when required.

Frequently Asked Questions

How many horsepower is the Doyin hybrid pump?

It is rated at 4HP, equivalent to approximately 3kW or 3000W.

What is the maximum head?

The maximum head is 190 metres. This is also the published maximum head of the comparable Doyin 4SDS10-3000W AD model.

What is the flow rate?

This version has a maximum flow of 9.6m³/h, equal to 9,600 litres per hour. Comparable current 4SDS10 models are commonly listed at approximately 10m³/h.

Is the Doyin 4HP pump AC/DC?

Yes. Comparable models are AC/DC hybrid pumps that can use compatible solar DC and AC power.

Does it use a brushless motor?

Current comparable Doyin 4HP hybrid pumps specify a high-efficiency permanent-magnet brushless motor.

Does it come with a controller?

Comparable Doyin Solar/AC 3000W pumps are available with an MPPT controller.

What voltage does it use?

One current 3000W Doyin hybrid model is rated at approximately 280V DC and 240V AC. Always confirm the voltage on the controller supplied with your exact pump.

How many solar panels does a 4HP Doyin pump need?

A current comparable 4HP Doyin installation recommends approximately 8 × 550W solar panels, giving about 4.4kWp. Final string design must match the controller voltage range.

What is the outlet size?

A current 3kW Doyin Solar/AC model with 190m maximum head specifies a 2-inch outlet.

What is the borehole pump diameter?

The comparable Doyin 4SDS10-3000W model is a 4-inch borehole pump.

Can it work directly from solar panels?

Yes. A comparable model supports direct DC solar operation through its pump controller without requiring a normal external AC inverter.

Can it also use grid electricity?

Yes. The hybrid system can use compatible AC grid power in addition to solar DC.

Can it work with a generator?

Comparable Doyin AC/DC systems are listed as compatible with grid or generator AC supplies, provided the generator output matches the controller requirements.

Can I install it in a 190m borehole?

Do not use maximum head as the recommended installation depth. One comparable 190m-head model is recommended for boreholes up to approximately 149m, subject to dynamic water level and TDH.

Is the pump suitable for irrigation?

Yes. Its high-flow design makes it suitable for agricultural irrigation where the borehole yield, pipe system and required pressure match its performance curve.

What is the price of a 4HP Doyin Hybrid Pump in Kenya?

Current comparable Doyin 3000W / 4HP / 190m AC/DC hybrid pumps are listed at approximately KSh 50,000 to KSh 60,000, depending on the supplier and whether the package includes the controller.