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GREEF DDG series generator have following features:
Low rated rotate speed, Low start wind speed, Low weight and small
size, low High efficiency
(1) Torque Patent Technology: use newest “Precise Coil” technology.
No hysteresis and gear notches effect make the start torque very
low <1N.M
(2) Original Structure: use disc coreless motor to take place
traditional motor makes it less volume and weight.
(3) Higher Utilization: use special coreless motor technology to
eliminate the use bottlenecks of lower speed wind energy.
(4) Higher Reliability: special structure make it bigger ratio of
power to volume, power to weight and have long life of 8 times
longer than traditional motor.
(5) Gearless, direct drive, low RPM generator.
(6) High standard, quality components for use in harsh and extreme
environments for wind turbines
(7) High efficiency and Low mechanical resistance energy loss
(8) Excellent heat dissipation due to the Aluminum alloy outer
frame and special internal structure.
Model | GDG |
Rated Power | 0.05KW-10KW |
Option Rated Voltage | 24V-440Vac |
Efficiency | >85% |
Wending Method | Y |
Insulating Resistance | 100Mohm Min(500V DC) |
Phase Type | 3 Phase |
Structure | Outer rotor |
Stator | Coreless wire coil |
Rotor | Rare Earth Permanent Magnet |
Generator shell material | Aluminum alloy |
Shaft material | Carbon steel |
Bearing | NSK Deep groove ball bearing |
They are always being used in vertical axis wind turbine, and other
generator system which requests very low start torque and low RPM.
1. Generator use inner foam protection outer Plywooden case
.Generator shaft use pipe protection.
2. Pakage size and weight please refer to our sales.
3. Shipping by sea with FCL LCL or by air .
If you have any request in package and shipping please tell our
sales we will do according to your request.
OEM service
Generators are free 3 years warranty, All lifelong technical support and part cost supply.
(1) The warranty period is start from the date of shipment which
show on the bill of loading or air waybill.
(2) Free maintenance services during the warranty period the cost
involved be borne by the company, do not charge a fee to customers,
free warranty if any damage outside the warranty period, the
company will charge a fee for labor costs and materials.
(3) the warranty period, company's quality problems caused by the
maintenance of the freight borne by the company, if not under
warranty or man-made damage, the freight charges by the customer.
1. Q: Does installation Easy ?
A: Very easy, every customer can doin by themselves, we will supply
all the components for installation and very details installation
manual.
2.Q: Which model is suitable for me?
A: Please contact our sales with following points :
1. What appliance do you want to running by the system? How many
watts are they and their working time .
2. Your annual wind speed .
3. What kinds of system do you want ? On-grid or off-grid
3.Q: Can I only buy parts not whole system?
A: Yes,for example you can manufacture tower in local , we can
supply you tower drawing .
Any other questions, please feel free to contact us.