Home » Heli 4 – On Grid/Off Grid Wind Turbine 4kW Generator

Heli 4 – On Grid/Off Grid Wind Turbine 4kW Generator

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£3,380.00 inc. VAT
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Heli 4.0 Wind Generator | Off-Grid or On-Grid Selection


Premium Helical Wind Engineering with Powerful System Flexibility

The Heli 4.0 is a premium heli wind generator designed for reliable, long-term energy generation with a robust and professional-grade construction. Depending on the selected configuration, the system can be prepared for 48V battery charging or for on-grid feed-in with a suitable wind grid-tie inverter.

With its large helical rotor design, durable nacelle structure and advanced bearing system, the Heli 4.0 delivers a strong balance of performance, stability and long service life.


Engineered for Strength and Long-Term Reliability

The Heli 4.0 is equipped with an additional azimuth bearing system designed to support smooth movement and stable operation. This double-bearing plain bearing construction includes grease nipples for relubrication, helping to support long-term durability and reduced mechanical wear.

The rotor blades and nacelle cover are manufactured and finished using a hand lamination process, ensuring a strong, carefully crafted structure with a premium-quality finish.

Technical Datasheet

IstaBreeze Heli 4.0 Off-Grid 48V Wind Turbine

Heavy-duty 48V off-grid wind turbine designed for powerful low-RPM wind energy generation and battery-based systems.

Rated Power 3.8 kW
Maximum Performance 7.4 kW
Rotor Diameter 3.0 m
Efficiency 92%

Wind Turbine Specifications

Current
48 V: 80 A / Grid: 20 A
Alternator
3-phase permanent magnet alternator with high-efficiency NdFeB magnets, resistant up to 150°C. Alternator weight: 31 kg.
Operating Range
120 RPM – 440 RPM, low-RPM wind turbine design
Outer Element
Paint-coated steel
Outer Coating
Hand-laminated GRP
Speed Range
0 RPM – 600 RPM
Maximum Performance
7.4 kW
Automatic Storm Safety
13 m/s, rotor tilted
Package Dimensions
Package 1: 60 × 60 × 85 cm / 113 kg
Package 2: 160 × 30 × 30 cm / 23 kg
Total weight: 136 kg
System Voltage
48 V
Efficiency
92%
Direction
All directions
Rated Power
3.8 kW
Power Transmission
Slip ring system, pre-mounted on the support element to prevent cable twisting or bending.

Wind Speed Data

Initial Wind Speed
3 m/s
Maximum Wind Speed
12–13 m/s

Blade Specifications

Blade Weight
2900 g per blade
Blade Material
GRP, hand-laminated, produced in Germany
Rotor Diameter
3.0 m
Noise Level
40 dB
Blade Length
150 cm

Required Equipment

Battery Group
Suitable battery group: min. 7200 W – max. 14400 W
For safe and efficient operation, this wind turbine should be used with a compatible charge controller and a suitable 48V battery system.
Technical Datasheet

IstaBreeze Heli 4.0 On-Grid Wind Turbine

Heavy-duty on-grid wind turbine designed for powerful low-RPM wind energy generation and high-efficiency grid-tie applications.

Rated Power 3.8 kW
Maximum Performance 7.4 kW
Rotor Diameter 3.0 m
Efficiency 92%

Wind Turbine Specifications

Current
Grid: 20 A / 48 V: 80 A
Alternator
3-phase permanent magnet alternator with high-efficiency NdFeB magnets, resistant up to 150°C. Alternator weight: 31 kg.
Operating Range
120 RPM – 440 RPM, low-RPM wind turbine design
Outer Element
Paint-coated steel
Outer Coating
Hand-laminated GRP
Speed Range
0 RPM – 600 RPM
Maximum Performance
7.4 kW
Automatic Storm Safety
13 m/s, rotor tilted
Package Dimensions
Package 1: 60 × 60 × 85 cm / 113 kg
Package 2: 160 × 30 × 30 cm / 23 kg
Total weight: 136 kg
System Voltage
48 V
Efficiency
92%
Direction
All directions
Rated Power
3.8 kW
Power Transmission
Slip ring system, pre-mounted on the support element to prevent cable twisting or bending.

Wind Speed Data

Initial Wind Speed
3 m/s
Maximum Wind Speed
12–13 m/s

Blade Specifications

Blade Weight
2900 g per blade
Blade Material
GRP, hand-laminated, produced in Germany
Rotor Diameter
3.0 m
Noise Level
40 dB
Blade Length
150 cm
For safe and efficient operation, this wind turbine should be used with a compatible on-grid wind inverter and suitable electrical protection equipment.