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9. Tower
Seite 23
| Owners Manual SkyWind NG, Version 5.1
Always contract a professional for installation. Choose a suitable
ground or foundation for your tower construction. Check and respect
your local legislation regarding tower installations.
Always use steel towers (conic tower, steel lattice etc.). Under no cir-
cumstances ever is it allowed to use aluminum towers (e.g. flagpoles)!
Aluminum will tend to resonate and damage your turbine within very
short amount of time.
Suitable
Suitable
9.1 Towers for SkyWind NG
The
SkyWind NG
has been designed to fit on a round tower with a 60 mm diameter. Its unique
mount allows installation within literally minutes by sticking the turbine on the tower and
tightening two screws
-
no welding is required at all! Any tower must provide a hub height of at
least 8 m, to estimate the annual performance at least 10 m are required.
The wind turbines tower must absorb all forces generated by the turbines operation. Technical
standards require it to withstand at least three times the maximum force of 250 N generated by
the wind turbine. The tower must never resonate within the rpm range of the wind turbine. To
guarantee for this no more than 2 m of the tower should be made of 60 mm diameter. Longer
towers must always be of a conic shape or be made of several pipes of increasing diameter. The
tower should be made of concrete or steel of at least 3.0 mm wall thickness.
Not correct
A wall thickness of at least 3 mm and a suitable tower
diameter are decisive for a low vibration tower that will
not shake under sudden loads exerted by gusts. Reso-
nance or a shaking will damage the turbine in a very
short period of time!
Contact your lightning technician if protection is requi-
red. The turbine can be connected to your existing light-
ning protection system if available.
Use 60 mm tower diameter for the uppermost 1 m of
your tower but never for more than 2 m of tower. Conic
or lattice type towers usually work best.
Any kind of resonance is prohibited and will damage
your turbine!
Contact a professional if you are unsure which tower to choose. Often lighting poles are used as
a cost effective solution with great success. Consider the
turbines resonance frequencies of ca.
10
-
50 Hz
depending on load and rpm. Immediatly stop the wind turbine and modify your to-
wer (e.g. with tension ropes) should you find that your tower is resonating! Any damage caused
by excessive vibration and fatigue are not covered by the products warranty.
Roof
-
top mount
2 m
