w w w . e n a i r . e s
E30
WIND TURBINE
USER MANUAL
PRO
PRO
ENAIR ENERGY S.L.
Avda de Ibi, Nº 44 - 03420 - Castalla
Aptdo Correos 182 - Alicante - SPAIN
Tel: +34 96 556 00 18
e-mail: info@enair.es
Web: www.enair.es
WIND TECHNOLOGY
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Avenida de Ibi 44 – P.O. 182-03420 | Castalla (Alicante), España
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Welcome and thank you for choosing ENAIR
You have acquired a wind turbine for home and industrial use,excellent energy efficiency and
manufactured with high quality materials.
If you have any comments or questions to us, please contact our Customer Service department
by writing to: info@enair.es
In this manual you will find all the details of operation and maintenance of our wind turbines.
Please, prior to installing your wind turbine, read carefully the
paragraphs “5. INSTALLATION "and "9. WARRANTY”, there
you will find instructions to register your installation and the
warranty.
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Content
1. About Enair ................................................................................................ 4
2. The small wind sector .................................................................................. 5
2.1 Beaufort scale .................................................................................. 5
2.2 Applications ..................................................................................... 6
3. You have yourself an Enair ............................................................................ 7
3.1 About Enair turbines .......................................................................... 7
3.2 Innovations of Enair-PRO ................................................................... 8
3.3 Service life ....................................................................................... 9
3.4 Technical information .......................................................................10
3.5 Before installation ............................................................................12
3.6 Where to locate your wind turbine .....................................................12
4. Packing and assembly .................................................................................15
4.1 Packaging of the machinery ...............................................................15
4.2 Machine assembly ...........................................................................18
5. Installation ................................................................................................21
5.1 Manual brake ..................................................................................21
5.2 Flanged endshield ............................................................................22
6. Maintenance ............................................................................................23
6.1 Tightening of screws .......................................................................25
6.2 Revision of screws ..........................................................................26
6.3 Brush inspection .............................................................................28
6.4 Revision of gaskets .........................................................................28
6.5 Greasing of critical parts ..................................................................29
6.6 Checking of the variable pitch ...........................................................29
6.7 Checking of the variable pitch ...........................................................29
6.8 Blade inspection ..............................................................................30
6.9 Paint checking ................................................................................30
7. Frequent questions .....................................................................................31
8. Electrical diagrams ......................................................................................35
9. Warranty ...................................................................................................37
9.1 Warranty activation ..........................................................................39
9.2 Maintenance and inspection plan .......................................................40
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Enair works with the illusion of collaborating in the transition to a sustainable energy model,
which increasingly have more in weight renewable energy and distributed generation. For this
ambitious target, Enair has an important R & D department, composed of professionals with
extensive experience in the field of wind energy. This team is dedicated to developing products
in which the design, reliability and efficiency are the main features.
Enair activity focuses primarily on small wind energy power, with a range that is currently
composed of the models up to 50kW. For the development of this activity we have various
specialized production centres in each of the subjects, spread throughout Spain, but mainly in
the province of Alicante where ENAIR, has the headquarter a development centre and test field.
In Castalla Alicante, our products undergo a first phase of essay, development and verification
testing and then undergo successfully the most demanding certifications of the market.
This whole development process of the product part is supervised by David Bornay; who is
dedicated since 1970 to develop different types of turbines of small and medium power until
today. With innovative base, the whole team of ENAIR is continuously incorporating
improvements to our turbines. According to recent market studies, we believe that you
purchased the best wind turbine, which in his power range, and market available is.
1. About ENAIR
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The small wind turbine is regulated by the manufacturing standards of IEC-61400. Within
these standards are subcategories of the standard such as IEC-61400-2, -12, -11, etc.
each feature sets that small wind turbines must comply with robustness, power curve,
noise, etc. requirements. Compliance w ith these rules is essential to ensure that a "small
wind" has the quality required therein. At present there are very few countries which
require manufacturing standards for wind turbine installations. Countries that do not
require these fulfilments, are exposed to the option that any type of home wind turbine
without safety and warranty standards can be installed. This should be avoided as it
should be ensured that only product installations with high performance and reliability are
installed.
Beaufort scale is a scale used globally to establish measures commonly used as a reference
for assigning names to certain currents of wind. This scale is important to keep in mind,
especially from grade 8 upwards, at which the w ind can cause damage to the wind turbine
by swirling object.
Grade
usual name
observable effects on land
Speed
(m/s)
Speed
(km/h)
0
Calm
Vertical smoke.
0 to 0,2
0 to 1
1
Light breeze
leaning smoke, flags and weathervanes do not
move
0,2 to 1,4
1 to 5
2
Weak -very weak
breeze
You feel the wind in your face. the leaves of the
trees, flags and w eathervanes move
1,4 to 3
6 to 11
3
Weak -faint breeze
The leaves of the trees are shaken the flags wave
3 to 5,3
12 to 19
4
Moderate breeze
Dust and small pieces of paper rises small
branches move.
5,6 to 7.8
20 to 28
5
Fresh -fresh breeze
Small trees move. Small waves in ponds.
7,8 to 10,5
29 to 38
6
Fresh –strong breeze
Large branches move. Whistling wires power lines.
Difficulty w ith umbrellas.
10,5 to 13,1
39 to 49
7
Strong -w ind
All trees in motion. It is difficult to walk against
the wind
13,1 to 17
50 to 61
8
Temporal -hard
Thin branches of trees are broken. Usually you
cannot walk against the wind
17 to 20,5
62 to 74
9
Temporal hard -very
strong
Uprooted trees and damaged buildings.
20,5 to 24,5
75 to 88
10
severe storm
Serious damage buildings.
24,5 to 28,3
89 to 102
11
Temporal hard
Widespread destruction.
28,3 to 32,5
103 to 117
12
Hurricane
Enormous damage.
More than
32,5
More than
118
2. The small wind sector
2.1 Beaufort Scale
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The applications for our wind turbines are multiple and include different types of
installations, for isolated power grid installations as well as for installations connected to
the network and through energy-producing facilities.
Here are some typical installations for different uses:
2.2 Applications
For wireless telecommunications should be placed
transmission antennas in remote locations that are
capable of transmitting the signals over long
distances, on these occasions rarely electricity
reaches these places, isolated energy systems are
the guarantee for optimal operation of the station.
For facilities of farms and greenhouses, the best
solutions are Smart Grid networks that combine
renewable energy, accumulation support network
and generators. Another solution is Self-
Consumption
There are many houses and rural hotels where
access to conventional electricity grid is impossible
or economically unviable. In these cases, isolated
systems are the solution to cover the own needs.
When there is access to the electricity grid the
solution is the installation of self-consumption.
Telecommunications
Farms, small industries, greenhouses, etc.
Houses, Country Hotels,
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ENAIR is a wind turbine which belongs to the field of small wind, simple operation and
easy assembly.
Targeting is done passively by a rudder that works as a weathervane, he always keeps the
aero generator downwind. Once the wind impinges on the blades, the kinetic energy of
wind is transformed into rotational kinetic energy. The variable pitch system regulates the
rotational speed for high w ind speeds. The generator converts this rotational kinetic energy
into electrical energy.
Structurally the wind turbine has: a main body, w hich provides the connection betw een the
coupling of the tower, the helm orientation, generator and the variable pitch system, is
isolated from the outside by the cone piece, a housing protects the internal mechanism.
3. You have yourself an Enair
3.1 About the turbine ENAIR
Variable pitch
Blade
Rudder
Gondola
Cover
of Gondola
Back
cover
rotatable
Cone
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Shovels, optimized with CFD
It has been used Dynamics Computational Fluids
for greater aerodynamic efficiency, so that
increase the power generated in low winds,
optimizing the profile up to 94%.
Generator improved by 15%
The 20 poles generator, increases efficiency in
relation to the rpm and achieves superior
performance because less heat
3.2 Innovations ENAIR - PRO
New Design
The centre of gravity coincides with the axis of
rotation.
The fast orientation allows more effective, faster
and better wind catching.
Variable Pitch Pro, 2 Speeds
2 position variable pitch, which achieves optimum
wind angle uptake in all cases plus extra
protection for over wind speed
Materials: 85% aluminium and fiberglass
Structural materials are mostly aluminium and
fiberglass, which cause better isolation and
protection against aggressive, saline and humid
environments.
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ENAIR has been designed for a service life of over 25 years, even in the most adverse
conditions, such as extremely salty environments or locations with high average wind
speeds.
UV resistance:
All paints used have high resistance to light and UV radiation to protect aging and fading
caused by the sun.
Resistance to high wind speeds:
The wind turbine is designed to fully maintain its structural integrity for specific wind
speeds of 60 m / s (216 km / h or 135 mph) (Class I according to IEC 614000-2 standard).
Is important to follow the safety recommendations shown in 4th point and the
maintenance planning shown in the 6th point.
Corrosion resistance:
Structural design with fiberglass and aluminium, as well as the application of surface
treatments allow the wind turbine to be installed place with extreme conditions: desert,
marine environments, etc.
To prevent corrosion of metal parts, specific nautical paintings are applied, based on
protective rubber.
Water-tightness:
The interior spaces are completely sealed to prevent moisture penetration that may
deteriorate internal components by placing a series of gaskets complete sealings.
Type of parts
Corrosion Protection
Made of aluminium
Anodized + anticorrosion paint
Made of steel
Anticorrosive paint or cataphoresis +
cataphoresis + galvanized + corrosion paint
Standard hardware elements
AISI 316 stainless steel
Location of the joint
Feature of the joint
Cone
Cancellous string EPDM 6mm
Carcass
Back cover
3.3 Service Life
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3.4 Technical Information
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Performance curves
3.8m
3,4m
1,8 m
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The ENAIR wind turbine placement is as important as the available wind.
The following considerations should be taken into account:
Tower height:
In general, the produced power will be greater, as higher the tower is because the wind
speed increases with height. You must consider that a taller tower is a major economic
investment which on the other hand is most often easily amortizable.
Land shape
Normally the highest point has the best winds, although areas around river valleys, large
hills or mountains and large forests can affect the wind resource.
3.5 Before installation
3.6 Where your wind turbine should be located
ATTENTION: Your dealer can provide technical assistance in locating
the best emplacement for your ENAIR.
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Obstructions:
Every obstacle that interferes the movement of the wind is affecting both its direction and
speed. The most common obstructions are houses and trees. It is generally recommended
to install the tower 10 meters above any obstruction and with a distance tw ice the height
of the obstruction.
For example, if you have a house 5 meters tall and a tree 7 meters near where you want to
install your ENAIR 30, it should be allocated to 17 meters above ground (7 m the highest
obstacle + 10 m) 10 meters from the house (5 x 2) and 14 meters from the tree (7 x 2).
Buildings:
On buildings, before placing a wind turbine, ensure that the structure of the building can
withstand the wind turbines weight and stresses during its operation.
The wind turbine should be placed about 3 meters back from the facade of the building,
and about 2-3 meters above the highest point. Consider also the surrounding buildings and
the “ w ind rose” .
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Areas where there is a clear direction of the prevailing wind:
In the environment of an obstacle an area of turbulence is produced.
Dimensions of turbulence area are defined by the height of the object.
The Location is defined by the direction of the prevailing wind
The dimensions of the area of turbulence in the downwind area (over 10H), are
conditioned by the width of the object (A):
•
If A <3H → Size of area downwind 20H
•
If A≤3H → Size of area downwind 10H (most common situation)
Prevailing winds:
It is important to know from where the most frequent and strongest winds come from, in
regarding of the area where you want to install ENAIR 30. To the extent possible, this
direction must be free of obstructions. In order to know this, data is gathered with an
anemometer and a wind vane to measure the direction and wind speed over a period of
time. The outcome of the measurements is called "wind rose". An example of the
aforementioned wind rose is shown below , the right shows the wind situation in summer
and the left in winter. As can be seen, they are completely different, so a detailed study of
the demand for electricity in both seasons will be very useful.
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The wind turbine is supplied in two packages:
Package 1:
o Main Body + generator + variable pitch
o Screws (see details below)
o 1 rudder guidance
o 3 blades
o Controller / Resistance / Switch Braking / inverter
o Investor (optional depending on model)
Package 2: (Optional according to customer request)
o Tower
2260 mm
750 mm
930 mm
Rudder
Kit shovels
Main body
Generator and
Variable pitch
Screws
Controller /
Resistance / Investor
(Operational)
4. Packing and assembly
4.1 Packaging Machine
Installation
Manual
Brake
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List of parts:
- 3 blades
- 1 variable pitch
- 1 coupling: Variable pitch - generator
- 1 generator
- 1 main body
- 1 covering for the main body
- 1 rudder
- 1 coupling: axis of rotation – Tower
- 1 set of brushes
- 1 set of copper rings
Screws:
The ENAIR is designed and built for easy, quick and safe installation.
If a bigger torque than recommended is applied, it can damage the parts connected by
those screws.
If the applied torque is below the recommended, there is risk of vibrations.
Screws (metric x length)
Joining pieces
Tightening torque
Quantity
M10 x 40
Rudder - gondola
46Nm / 34Lb.ft
6
M10 x 80
PMG - gondola
46Nm / 34Lb.ft
12
M14 x 60
Axis of rotation - Tower
127Nm / 93.5Lb.ft
8
M8 x 20
Cover - Gondola
5Nm / 3.5Lb.ft
4
M10 x 70
Counterweights - spoons
46Nm / 34Lb.ft
12
M10 x 50
Counterweights - spoons
46Nm / 34Lb.ft
3
M8 x 20
Brush- gondola
23Nm / 17Lb.ft
2
M14 x 60
Support variable pitch - axis PMG
127Nm / 93.5Lb.ft
1
M12 x 50
Base variable pitch - support PV
79Nm / 58Lb.ft
6
CAUTION: Apply the recommended values of pairs indicated in the table, use
torque meter wrenches to tighten them.
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SAFETY RECOMMENDATIONS
These safety recommendations should be taken into account during installation and during
maintenance of the ENAIR:
• ENAIR complies with international safety standards, to ensure that your installation
should never be dangerous.
• ENAIR is designed so that the installation is safe, but there are common risks like with
any electromechanical equipment.
• ENAIR must be installed according to the instructions of this manual and in compliance
with local and national standards.
• ENAIR installation must be performed by qualified professionals.
• During installation make sure that your wind turbine is braking (with the 3 phases short-
circuited) and disconnected from the electrical installation.
• Perform installation operations a calm day, the wind should be less than 6 m / s.
• Never stand under the tower during installation or maintenance operations.
• For safe installation at least two people are needed.
• During installation always use proper safety equipment: helmet, safety shoes, gloves,
safety glasses …
ATTENTION: ENAIR is not responsible for the inappropriate use of the wind
turbine. The wind turbine should never be handled without the explicit
permission of the installer or manufacturer. Improper handling of the wind
turbine can result in electrocution and burns, and will be reasons for
cancellation of the guarantee.
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The wind turbine assembly is divided into five simple steps. These steps should be
followed in the order shown below .
Step 1: Electrical connections
Step 2: Placement on the tower
Screws:
Hexagonal screw bonding toe: DIN 933 M-14x55 INOX A2
8
Pressure washer screw M14 bonding.: DIN 127 zinc plated
8
Washers screw union: DIN 125 M14 zinc plated
16
Binding screw nut: DIN 934 M14 INOX A2
8
Tools:
22 spanner, hexagonal of 22 and torque wrench
Tightening torque:
127 Nm oder 93.5 Lbf.ft
4.2 Installing the machine
Join the three electrical connectors from the brushes
with the cables installed in the tower.
To prevent that the weight of the connected cables pulls
on the brushes, they should be winded three times
around a prepared welded part at the top of the tower.
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Step 3: Shovels
To ensure proper assembly of the blades, there is a protrusion on the blade that
should fit with the corresponding hole in the conical scoop.
Screws:
Allen screw scoop-holder: DIN 912 A2 M10x80 INOX 12
Allen screw scoop-holder: DIN 912 A2 M10x80 INOX 3
Pressure Washers screw union: DIN 127 M-10 zinc plated 15
Tools:
17 spanner, hexagonal of 17 and torque wrench
Tightening torque : 46 Nm oder 34 Lbf.ft
ATTENTION: By tightening, there must remain a small clearance between the
bucket and the counterweight
ATTENTION: When the tightening is done some crunches could be heard. This
is absolutely normal and needed this guarantees the optimal fixing of the blade
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Step 4: Rudder
Step 5: Upper casing
Screws:
Allen screw clamp: DIN 912 A2 M10x55 INOX 6
Clamp pressure Washers: DIN 127 M-10 zinc plated 6
Clamp Washers: DIN 125 M-10 zinc plated 6
Tools:
Allen glass 8, extension cable and torque wrench
Tightening torque: 46 Nm oder 34 Lbf.ft
Screws:
Allen screw casing: DIN 912 M8x25 A2 STAINLESS 4
casing pressure Washers: DIN 127 M7 zinc plated 4
casing Washers: DIN 125 M8 zinc plated 4
Tools:
Glass Allen 8, extension cable and torque wrench
Tightening torque : 5Nm or 3.7Lbf.ft
ATTENTION: By tightening, there must remain a small clearance between the
clamp and the nacelle
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* Observations to consider in the installation:
Note:
The towers must always be certified by ENAIR prior to installation to ensure the integrity
of the machine and the correct operation thereof. The installation will be out of warranty if
the tower does not have the proper accreditation ceded by ENAIR and screws are not
correct to withstand the vibration and forces.
To stop the w ind turbine when the wind speed is low you must press the manual brake
(the brake switch) and if the wind speed is higher than 12 m/s you must press the switch
several times for the rpms to be lower. If it doesn't work you must wait until the wind
turbine gets a wrong point due to a wind gust so you press the brake switch in that
moment. There are several ways to disorientate the w ind turbine on your own so you must
ask Enair for
5. Installation
Whatever type of tower the minimum distance
between the tip of the blade and the tower must be
at least 35cm.
35cm
Minimum
5.1 Manual brake
CAUTION: It is mandatory to install the wind turbine manual brake switch
between the wind turbine and the wind turbine controller. If not acquired
from Enair, purchase a thermal three-phase circuit breaker (63A) with crossed
phases.
ATTENTION: The wind turbine has not to be short circuited if the wind
turbine is not stopped
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For customers who have their own tower, below there is the coupling plane between the
rotation axis of ENAIR 30PRO and tower. This coupling must be welded to the top of the
tower and bolted to the axis of rotation of the turbine.
Screw: Quality 8.8 zinc plated M14x50mm
The tower must withstand 1000 kg at peak and load for the following data for the design:
* The data provided has been obtained in accordance w ith IEC 61400-2 and does not
include safety factors.
The straps welding head of the tower must be clean so that contact with the toe is good
and vibrations are not produced.
The connection between the top of the tower and the bottom of the wind turbine has to be
done as such that the bolts can withstand the forces and moments calculated for the
whole wind turbine + tower.
Screw: 8.8 galvanized M20x55 with 2 washers and lock nut M20
ENAIR
Weight
Thrust
Overturning moment
E30PRO*
125 kg
3350 N
1350 Nm
5.2 Coupling flange and tower
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The ENAIR is designed to function optimally with minimal maintenance, the
equipment will have a lifespan of over 25 years.
Machinery components ENAIR 30 PRO must only be handled by competent technical
personnel. Under no circumstances unqualified personnel will take care of maintenance,
unless he/she is directly led by a qualified technician.
All hardware elements that are handled during maintenance must be tightened with a
torque wrench according to the torque table.
The frequency of maintenance depends on the average wind speed at its location.
Wind class:
Wind class
Average wind speed at the location of the installation
m/s
km/h
mph
1
<5.6
<20.1
<12.53
2
5.6 – 6.4
20.1 – 23.04
12.53 – 14.32
3
6.4 - 7
23.04 – 27.2
14.32 – 15.66
4
7 – 7.5
25.2 – 27
15.66 – 16.78
5
7.5 - 8
27 – 28.8
16.78 – 17.9
6
8 – 8.8
28.8 – 31.68
17.9 – 19.69
7
>8.8
>31,68
>19.69
6. Maintenance
CAUTION: Not following the plan of wind turbine maintenance voids the
warranty.
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Preventive maintenance plan:
Wind class
1 2 3 4 5 6 7
Tighten screw of blades, rudder axis
of rotation, toe and tower.
A month after installation
Visual inspection (both Windmill and
the tower), check for abnormal
noise and vibration
A month after installation and after storms or winds exceeding 25 m /
s (90 km / h, 56 mph)
1 - Tighten screws rudder axis of
rotation and toe
Every 12 months
Every 8 months
2 - Tighten screws other tower (e.g.
joints, couplings ...)
3 - Greasing bearings in the variable
pitch
4 - Greasing the whole variable
pitch
5 - Checking the status of the
blades, special attention to the
leading edge
6 - Checking the correct operation
of the variable pitch
7 - Checking paint, search for
damage and rust spots
8 - Inspecting the carbon brushes,
slip rings and connecting cables
9 - Replacing carbon brushes
Every 15 years (indicative)
Every 10 years ( indicative)
CAUTION: Do not follow the plan of wind turbine maintenance voids the
warranty.
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Step 1: Remove Cone
To perform maintenance operations, it will be necessary to remove the cone and the rear
cover.
Step 2: Visual Inspection interior elements
To remove the cone, you can use any wrench or
any elongated object that fits into the screw slot.
To loosen, torque in the opposite direction of the
usual loosening must be applied.
Visually verify that there are no loose parts and
everything is properly screwed.
Check slackness of parts, simply by moving with
hand.
All screws should be tightened and parts must not
show slackness.
CAUTION: Before performing any maintenance, stop the mill, using the
braking contactor.
CAUTION: Attach one of the blades of the ENAIR to the lift
basket to prevent rotation of the rotor during maintenance
CAUTION: Do not perform any maintenance operation in high winds
situations.
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Step 3: tighten up the indicated screws.
Slide guide
Variable-pitch coupling plate
Counter-weights
Rudder
3x DIN912 – M10 x 35
Tools:
Allen wrench and torque wrench 8
Tightening torque: 46 Nm or 33 Lbf.ft
6 x DIN931 – M12 x 50
6 x DIN985 – M12 Nut
Tools:
end spanner 19, 19 hexagonal socket,
extension and torque wrench
Tightening torque: 62 Nm or 46 Lbf.ft
4 x DIN912 – M10 x 80
1 x DIN912 – M10 x 50
Tools:
Wrench and torque w rench 8
Tightening torque: 46 Nm or 33 Lbf.ft
6 x DIN912 – M10 x 50
Tools:
Wrench and torque w rench 8
Tightening torque : 46 Nm or 33 Lbf.ft
With the proper tool, verify the indicated tightness
of the screws.
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Rotable
Toecap
Tools:
22 end spanner, hexagonal of 22 and torque
wrench
Tightening: 91 Nm or 67 Lbf.ft
Tools:
22 end spanner, hexagonal of 22 and torque
wrench
Tightening: 91 Nm or 67 Lbf.ft
In case of using a lattice tower installation, you
must also check its screws.
WARNING: It is also important to check the electrical
connections on the charge controller, batteries, inverter and
resistors.
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Step 4: Review of brushes.
Back cover
Carbon brushes
Tools:
4 hexagon socket and torque wrench
Tightening: 5 Nm o 3.7 Lbf.ft
Screw cap carbon brushes DIN 7991 M-6x16
A2 INOX 2
To check the brushes, it is necessary to remove the
back cover and follow the steps.
ATTENTION: after removing the sealing caps and housings it is
very important to make sure they close tight again. If the gasket is
in a bad condition, then seal with silicone.
Check the cable connections with the brushes and
verify that they are in contact with the slip rings
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Step 5: Greasing critical parts.
Type of grease: Lubricating grease for extreme pressure and high temperatures.
Physical characteristics of grease
Texture
Filiform
Colour
blue green or brown
Classification NL6Z
Grade 2
(60 cycles) worked penetration
280 1/10 mm
Dropping point
230 0C
Source soap
aluminum complex
Bearing
Step 6: Checking the Variable pitch.
Check that the bearing is greased and add
in the event of absence.
This must be done in each of the rolling
bearing of the blades.
1. Press with two persons the three torque levers simultaneously, resistant spring force must
be noticeable
2. The levers must reach the limit position.
3. Releasing the levers, should cause a return to their initial position
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Step 7: Check the blades
Step 8: Verification of painting
Inspect the entire outer surface of ENAIR. Repaint if necessary.
Paint characteristics
White paint
Polyurethane paint, RAL 9003
High resistance to corrosion and UV
radiation
Black paint
Polyurethane paint, RAL 9004
The leading edge
Review the surface of the blades, paying particular attention to the leading edge; it is
normal that a slight wear is observable. If you find larger damage to the surface, than
you have to replace all the three blades.
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1. What is the right size for my installation?
The following table shows a guide to which wind turbine chosen depending on the
wind and electricity consumption. For reference, a normal household consumes
about 4000kWh annually, while a large consumer can be about 6000 or
15000kWh.
For Wind Turbine model suitable for installation have the eCon application of
calculation and design of facilities in 4 steps that will recommend the most
appropriate model for you. www.enair.es/app
2. Why install a Horizontal Axis Wind Turbine and 3 blades instead of other designs?
Horizontal 3-blade wind turbines offer the highest efficiency based on their design
and the Betz Law, which defines the maximum theoretical conversion factor
between the energy carried by the wind to power absorbed by the turbine blades.
This conversion factor is the power coefficient Cp Wind Turbine, and its maximum
value is Cp = 0.59, precisely by the Law of Betz.
Each type of wind turbine design, whether 2-blade or multiblade vertical axis have
different coefficients limited by the design of the wind turbine itself. In the
following table you can see these coefficients.
As shown in the chart, the best design according to physical laws is the 3-blade
model horizontal wind turbine. This is the most common and w idespread design
worldwide.
7. Frequently Asked Questions
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3. How much space do I need?
In theory, a wind turbine works better when less obstacles are in the path of the
wind, but with a sufficient distance from the obstacles, the effect can be
minimised.
A wind turbine should be place at a horizontal distance of at least twice the height
of the closest obstacles and at least 10m higher than the closest obstacles. For
furt her explanat ions, please consult t he chapter “ Installat ion” .
4. Are Wind turbines noisy?
The ENAIR wind turbines are designed to be silent as its rated speed is between
200 and 250rpm depending on the model. Considering the height at which they
are, they will be virtually unnoticeable by someone who is standing at its base.
Having a 33% lower rpm than other existing wind turbines, it makes the longevity
3 times higher than the high-revving models.
5. Birds affect small wind turbines?
It is unlikely that a bird impacts the blades of a small wind turbine as ENAIR,
rotating at low speed (betw een 200 and 250 rpm depending on the model) and not
located at the height to which migratory birds make their long journeys, which
makes it even more unlikely.
6. Can I use a wind generator for my heating system?
Yes, you can use a wind turbine to heat water. Simply connect the controller
output to an electric heater. What you should consider is that normally the heating
energy consumption is considerably higher than electricity, so you will need to
have larger equipment.
7. Can I connect my equipment to the network?
Small wind turbines themselves can be connected to the distribution network. This
requires using a compatible inverter with the network and that the installation is
approved by the local utility company, which require compliance with the standards
and regulation with which a connection to the grid can be built.
Each model of our turbines has been tested for this purpose in period of one year,
with a very good result.
8. The tower swings, is normal?
When the towers are not provided by Enair could swing due to the coupling
between resonance frequencies. Because of the wind turbine is a dynamic system
when the natural frequencies of the tower couple with the rotational frequencies of
the wind turbine then the tower begin to swing and it depends on the tower type,
the wind turbine... if the oscillations are bigger than the 2% of the tower height
and they don't dissapear contact Enair
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9. How long does a wind turbine work?
Our wind turbines are designed to last more than 20 years. This is due to its robust
design, quality of materials, the anti-corrosion treatments and a completely sealed
design that prevents moisture and other particles from entering the system and the
inability of the birds nesting in them during windless periods.
All this means that our design does not deteriorate even in aggressive
environments like near the sea, where saline air and the sand particles usually
cause corrosion and erosion.
10. Can I have my own wind turbine?
Small wind turbines are the perfect choice for individuals, communities and small
businesses that want to generate their own energy. The chosen characteristics of
the location (average wind speed, location and topography) determine the size and
type of wind turbine used in each case
11. How do I know if I have enough wind?
The wind speed is influenced by the local topography and nearby obstacles such as
trees and buildings. Wind direction sometimes can be very variable with risk of
being affected by turbulence due to the nearby obstacles. So when in doubt, it is
best to contact professionals engaged in the installation of small wind turbines.
Normally, with an average of 5 m / s it is worthwhile installing a small wind
turbine.
Our technical department will inform you about the average speed at your
particular location. In order to do this, please fill in the contact form on:
www.enair.es
12. How does a wind turbine produce electricity?
Roughly a wind turbine works as follows: the blades take advantage of wind
energy to generate a torque on the generator. This, depending on the speed and
the force exerted by the blades and its axis, generate electricity, which will reach
the controller and the inverter. These electronic components convert electricity
continuously for whatever purpose its needed like charging batteries, direct
consumption or feeding electricity to the grid.
13. How tall is a small wind turbine?
The tower height can vary considerably, depending on the type of turbine and the
location. Generally, the tower of small w ind turbines ranges from 10 to 20m. The
higher the tower, the more constant and faster are the winds.
Furthermore, to determine the total height of the system, one must take into
account the diameter of the blades, which typically ranges between 1.5 and 10m.
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14. I need some kind of permission to install my wind turbine?
The installation of small wind turbines may require some kind of permission. This
often depends on the height of the tower, the autonomous region or the country in
which you want to install. When in doubt it is best to consult a professional or the
competent authority in each case.
15. What materials are used in the ENAIR?
The structural parts of our wind turbines are made of stainless steel and aluminium.
Blades and other components are made of copper, plastic, polyester resin and
fiberglass.
All parts are adequately protected against corrosion, either by hot dip galvanizing or
by various surface treatments aimed to have adequate protection even in salty
environments. Furthermore, the entire assembly is sealed to prevent ingress of
water, dust or any kind of substance inside. In this way the electrical components
are safe and well protected.
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To determine the cable section downstream separating the wind turbine controller battery
charging, check the following table, where you can see the cable copper conductor,
associated with the model of Wind Turbine:
Model
20-40m
40-60m
60-80m
80-100m
ENAIR 30PRO-24V
16mm2
25mm2
25mm2
35mm2
ENAIR 30PRO-48V
10mm2
16mm2
25mm2
25mm2
Section mm2
10
16
25
35
50
Section AWG
7 5 3 1 0
Diameter (mm)
3.57
4.51
5.64
6.68
7.98
Diameter (in)
0.141
0.178
0.222
0.263
0.314
8. Electrical diagrams
8.1 Connection continuous bus
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To determine the cable section downstream separating the wind turbine controller battery
charging, check the following table, where you can see the cable copper conductor,
associated with the model of the wind turbine:
Model
20-40m
40-60m
60-80m
80-100m
ENAIR 30PRO-220V
10mm2
10mm2
10mm2
16mm2
8.2 Alternating bus connection
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LIMITED WARRANTY CONDITIONS
ENAIR ENERGY SL ensures that the ENAIR wind turbines are free from defects in material
and workmanship for a period of 48 months from the date of purchase or 60 months from
the manufacture of that product, under normal and individual use proper installation,
commissioning and periodic maintenance.
The warranty covers repair or replacement of damaged parts and labour in our workshops.
EXCLUSIONS AND LIMITATIONS OF WARRANTY
This warranty shall not apply if the client or user previously not been returned duly
completed warranty card. The warranty does not cover wind turbines that have not passed
the periodic maintenance indicated in the manual and is properly sealed.
Generally, they are exempt from the guarantee rights established herein, damage and
malfunctions or service of wind turbines ENAIR originating in:
1) Negligent, improper or inappropriate use of the product.
2) Failure to observe the instructions for installation, use, maintenance and periodic
reviews established in the equipment manual, and technical and safety rules in
force, local, national or international standing, which were applicable at any time
(Electrotechnical Regulation of Low voltage, and Technical Instructions,
electromagnetic compatibility, etc.)
3) Manipulations performed by unqualified personnel. Understood by staff competent
professionals with experience in electrical installations, companies engaged in
distribution, sale or installation of RES.
4) Damage caused by natural disasters (floods, plagues, earthquakes, hurricanes,
cyclones, tornadoes, lightning, hail, fires ...), vandalism, actions of third parties or
any other force majeure outside the normal operating conditions of the equipment
and control of ENAIR ENERGY S.L.
5) Impact of flying objects coming or majeure force.
6) Torre or structural failure when not furnished by ENAIR ENERGY S.L.
7) 1) Products that have not been paid in full.
9. Warranty
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Intervention costs arising from dismantling the faulty equipment or the subsequent
reinstallation of equipment parts warranty rights established herein do not cover
transportation costs of wind turbines or defective items, of returning to ENAIR ENERGY
S.L. It does not cover, also.
ENAIR ENERGY S.L we reserve the right to supply a different model of wind turbine or
component to resolve claims accepted under guarantee, as a replacement and if the
original model is no longer manufactured. In this case, the new model will be of equal or
higher performance.
ENAIR ENERGY S.L it undertakes to make use of the obligations described in the
conditions of this Limited Warranty, and in the event of repair or replacement of default
attributable to the manufacturer, cover the transport costs of the subsequent return to the
address registered customer and have them available within a maximum period of 60 days
from the date of receipt.
Si ENAIR ENERGY S.L were to determine that the problem of the wind turbine is not due to
a defect in materials and workmanship, then the Customer shall bear the costs of testing
and processing generated.
Defective complained Products which do not meet the specifications will become the
property of ENAIR ENERGY S.L., as soon as they have been replaced or paid.
Any return of material and replacement by ENAIR ENERGY SL under warranty conditions,
constitute full settlement and release of all subsequent claims of any person covered by
damages or other relief, and will be an impediment to any I dispute subsequently presented
to the person who accepts an agreement of this type.
LIMITATION OF LIABILITY
ENAIR ENERGY S.L it will not be liable to the customer, directly or indirectly, for any
failure or delay in the implementation of its warranty obligations, which may be caused by
majeure force or any other unforeseen incident to the will of ENAIR ENERGY S.L.
ENAIR responsibility for ENERGY S.L. arising from this Guarantee Certificate is limited to
the obligations expressed above, expressly excluding any liability for consequential
damages such as loss of income or operating profits.
When the subject of the claim is the result of improper installation, ENAIR ENERGY S.L.
shall be liable only when explicitly that installation was part of the scope of supply of the
sales contract.
Any other security that is not expressly mentioned in this certificate is excluded.
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To activate the guarantee you have to enter the following web
https://www.enair.es/garantia and access with the serial number that appears in the
manual of the wind turbine.
It is necessary to fill in the user's data in order to inform you when to carry out the
preventive maintenance
Once the warranty is activated, the mechanical parts of the wind turbine will have a 4-year
guarantee from the invoice date or 5 years from the date of manufacture. The warranty of
the associated electronics is 2 years from invoice date
9.1 Warranty activation
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Periodically by mail you will be notified of the date of the next maintenance, remember
that the non-execution of the maintenance cancels the warranty.
Once the maintenance has been done, it has to be registered on the web for validity, nonregistration, voids the guarantee
The application allows to obtain a list with all the maintenance done to the wind turbine
9.2 Inspection and maintenance plan
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