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Home > Products > Permanent Magnet Alternator >
40kw 200kw Low Rpm Dynamo Magnetic Electric Generator Free Energy

40kw 200kw Low Rpm Dynamo Magnetic Electric Generator Free Energy

40kw Magnetic Electric Generator

200kw Magnetic Electric Generator

200kw free energy generator magnet

Place of Origin:

QINGDAO

Brand Name:

GREEF

Certification:

CE

Model Number:

GDF

Contact Us
Request A Quote
Product Details
Tolerance:
+/-0.1mm Or According To Customer Request
Life Time:
20 Years
Grade:
N35-N52
Size:
Customized Magnet Size
Generator Material:
100% Copper Wire+Nd-Fe-B
Rated Rotor Speed:
300RPM,20-900RRM
Wending Method:
Star/Y
Generator:
3-Phase Permanent Magnet Generator AC Alternator
Output:
0.05-10 KW
Blade Material:
High Strength Nylon Composite
Highlight:

40kw Magnetic Electric Generator

,

200kw Magnetic Electric Generator

,

200kw free energy generator magnet

Payment & Shipping Terms
Minimum Order Quantity
1
Packaging Details
Inner Foam + Plywooden case
Delivery Time
25DAY
Payment Terms
L/C, D/A, D/P, Western Union, MoneyGram
Product Description

40kw 200kw low rpm dynamo high quality magnetic electric generator free energy 

Product Description
Permanent Magnet Generators offer high efficiency energy conversion, particularly at partial load, and require no separate field excitation system. Our permanent magnet generators are lighter, more efficient, and require less assembly labor than competing designs.
Permanent Magnet Generators are used in a large number of applications such as Wind Turbines, Hydro Turbines, motors and others.
40kw 200kw Low Rpm Dynamo Magnetic Electric Generator Free Energy 0
1
Rare earth Nd-Fe-B permanent magnets
2
Low Speed
3
Direct Drive ,no use gear-box
4
SKF bearing
5
Power factor close to 1
6
Maintenance free , can be used in all environments .
7
Long life time >20years, could run at high speed 24 hours 365 days .
8
Customized : Voltage, Speed, Power, Frequency etc.
9
Multi poles design, improve the frequency and efficiency of rectifiers and inverters.
10
H class insulation, vacuum pressure impregnation.
11
Excellent heat dissipation , also can add fan cooling
Rated power
0.5--5000
kW
Rated rotate speed
20--3000
rpm
Rated voltage
48--1140
Vac
Frequency
60/50
Hz
Number of Poles
24
Generator type
3phase AC Synchronous generator
Magnet type
NdFeB
Winding Method
Y
Magnet temperature level
Max.120℃
Winding temperature level
Max.180℃
Effienciency
>95%
Insulate Grade
H
Insulating resistance
100Mohm Min(500Vdc)
Classification of degrees
IP54
Generatror shell material
Cast Iron
Winding material
100% Copper
Shaft material
Steel
Iron Core
Cold rolled silicon steel sheet
Bearing brand
SKF
Cooling Method
Fan Cooling
Weight (N.W /G.W )
132kg /152kg
Packing Size
870*470*570mm
Installation
Horizontal
Advantages
Alternative Energy Generators
GREEF Company provide customized generator according to each customer 's requirements of Voltage, Speed, Power, Frequency etc.
RATED POWER
RATED SPEED
RATED VOLTAGE
FREQUENCY
0.5KW
20rpm~400rpm
12V~220Vac
10Hz~60Hz
1KW
20rpm~600rpm
12V~220Vac
10Hz~60Hz
2KW
20rpm~1000rpm
12V~400Vac
10Hz~60Hz
3KW
20rpm~1500rpm
48V~690Vac
10Hz~60Hz
5KW
20rpm~1500rpm
48V~690Vac
10Hz~60Hz
10KW
20rpm~1500rpm
120V~690Vac
10Hz~60Hz
15KW
20rpm~3000rpm
120V~690Vac
10Hz~60Hz
20KW
20rpm~3000rpm
120V~690Vac
10Hz~60Hz
25KW
20rpm~3000rpm
120V~1140Vac
10Hz~60Hz
30KW
20rpm~3000rpm
120V~1140Vac
10Hz~60Hz
50KW
20rpm~3000rpm
220V~1140Vac
10Hz~60Hz
80KW
20rpm~3000rpm
220V~1140Vac
10Hz~60Hz
100KW
20rpm~3000rpm
220V~1140Vac
10Hz~60Hz
150KW
20rpm~3000rpm
380V~1140Vac
10Hz~60Hz
200KW
20rpm~3000rpm
380V~1140Vac
10Hz~60Hz
250KW
20rpm~3000rpm
380V~1140Vac
10Hz~60Hz
300KW
20rpm~3000rpm
380V~1140Vac
10Hz~60Hz
500KW
20rpm~3000rpm
380V~1140Vac
10Hz~60Hz
700KW
20rpm~3000rpm
690V~1140Vac
10Hz~60Hz
800KW
20rpm~3000rpm
690V~1140Vac
10Hz~60Hz
1MW
200rpm~3000rpm
690V~1140Vac
10Hz~60Hz
2MW
200rpm~3000rpm
690V~1140Vac
10Hz~60Hz
3MW
200rpm~3000rpm
690V~1140Vac
10Hz~60Hz
20KW
20rpm~3000rpm
120V~690Vac
10Hz~60Hz
4MW
600rpm~3000rpm
690V~1140Vac
10Hz~60Hz
5MW
600rpm~3000rpm
690V~1140Vac
10Hz~60Hz
40kw 200kw Low Rpm Dynamo Magnetic Electric Generator Free Energy 1
Systems
40kw 200kw Low Rpm Dynamo Magnetic Electric Generator Free Energy 2
40kw 200kw Low Rpm Dynamo Magnetic Electric Generator Free Energy 3
Customer Photos
40kw 200kw Low Rpm Dynamo Magnetic Electric Generator Free Energy 4
40kw 200kw Low Rpm Dynamo Magnetic Electric Generator Free Energy 5
40kw 200kw Low Rpm Dynamo Magnetic Electric Generator Free Energy 6
Packing & Delivery

1. Greef generator use inner foam protection, outer Plywooden case.

2. Package size and weight, please contact our sales.

3. Shipping by sea with FCL / LCL to your nearest port

Or Shipping by air to your nearest airport

Or Shipping by DHL/FedEx/UPS/TNT to your door

If you have any requests in package and shipping , please contact us directly.

40kw 200kw Low Rpm Dynamo Magnetic Electric Generator Free Energy 7
Buyer Reviews

 

Permanent Magnet Generators are 3 years warranty for free, 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.

 

Why Choose Us
We are global supplier which focus on Permanent Magnet generator, wind turbine , wind turbine blades, controller, invertor etc.
"GREEF" have its own engineer design team which is design products ourselves. Moreover, we have successfully obtained CE approvals and supports from our customers, which boost our business day by day!
Believe in us, we can accompany you forever.
40kw 200kw Low Rpm Dynamo Magnetic Electric Generator Free Energy 8
40kw 200kw Low Rpm Dynamo Magnetic Electric Generator Free Energy 9
Ratings& Review

Overall Rating

5.0
Based on 50 reviews for this supplier

Rating Snapshot

The following is the distribution of all ratings
5 stars
100%
4 stars
0%
3 stars
0%
2 stars
0%
1 stars
0%

All Reviews

B
B*v
Uzbekistan Apr 15.2026
This canal flows day and night – I never thought it could make money. After Greef installed the system, it runs by itself. Every day I check my phone to see how much electricity was generated and how much I earned. I'll recover my investment in less than a year, and after that it's pure profit.
B
B*n
Sweden Oct 17.2025
My farm is 30 kilometers from town, and connecting to the power grid would cost a fortune. Three years ago, I installed a solar panel system with a battery bank. It was sufficient during spring, summer, and fall, but in winter, we often had a week of consecutive overcast days—and the batteries would run out in just three days. Last year, I decided to add a variable-pitch wind turbine, connected it to the AC coupling port of the Deye inverter, and set up a hybrid solar-wind system. Throughout the entire winter, the battery level never dropped below 45%, and I never had to work in the dark again. The Deye app allows me to monitor both the solar and wind turbine data simultaneously, and the transition between them is so smooth it’s almost imperceptible. Relying solely on solar power during winter on a Nordic farm is a gamble. Only by combining a variable-pitch wind turbine with a Deye inverter—creating a wind-solar hybrid system—can you get through the winter with peace of mind.
L
L*s
Czech Republic May 4.2023
“I built a small pico hydro system on the creek behind my off-grid cabin. The water head is only 3 meters and flow rate around 0.2 m³/s – too low for most generators. This axial flux coreless unit starts generating usable power at just 150 RPM. No cogging, no iron loss, and it’s silent. I’m getting 300-400W continuously, 24/7. My old induction generator would barely light an LED at that speed. Absolutely perfect for low-head hydro.”

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