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WIND TECHNOLOGY
+34 96 556 00 18 [email protected]
Avenida de Ibi 44
–
P.O. 182-03420 | Castalla (Alicante), España
www.enair.es
P a g e
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5
The small w ind t urbine is regulat ed by t he manuf act uring st andards of IEC-61400. Wit hin
t hese st andards are subcat egories of t he st andard such as IEC-61400-2, -12, -11, et c.
each feature set s t hat small w ind turbines must comply w it h robust ness, pow er curve,
noise, etc. requirement s. Compliance w ith these rules is essent ial t o ensure t hat a " small
w ind" has the qualit y required t herein. At present t here are very f ew count ries w hich
require manufacturing st andards f or w ind t urbine inst allat ions. Count ries t hat do not
require these f ulf ilment s, are exposed t o t he opt ion that any t ype of home w ind t urbine
w it hout saf et y and w arrant y st andards can be inst alled. This should be avoided as it
should be ensured t hat only product inst allat ions w it h high perf ormance and reliabilit y are
inst alled.
Beaufort scale is a scale used globally t o est ablish measures commonly used as a ref erence
f or assigning names t o cert ain current s of w ind. This scale is import ant t o keep in mind,
especially f rom grade 8 upw ards, at w hich the w ind can cause damage t o the w ind t urbine
by sw irling object .
Grade
usual name
observable effects on land
Speed
(m/s)
Speed
(km/h)
0
Calm
Vert ical smoke.
0 t o 0,2
0 t o 1
1
Light breeze
leaning smoke, f lags and w eat hervanes do not
move
0,2 t o 1,4
1 t o 5
2
Weak -very w eak
breeze
You f eel t he w ind in your f ace. the leaves of t he
t rees, f lags and w eat hervanes move
1,4 t o 3
6 t o 11
3
Weak -f aint breeze
The leaves of t he t rees are shaken t he f lags w ave
3 t o 5,3
12 t o 19
4
Moderat e breeze
Dust and small pieces of paper rises small
branches move.
5,6 t o 7.8
20 t o 28
5
Fresh -f resh breeze
Small t rees move. Small w aves in ponds.
7,8 t o 10,5
29 t o 38
6
Fresh
–
st rong breeze
Large branches move. Whist ling w ires pow er lines.
Dif f icult y w it h umbrellas.
10,5 t o 13,1
39 t o 49
7
St rong -w ind
All t rees in mot ion. It is dif f icult t o w alk against
t he w ind
13,1 t o 17
50 t o 61
8
Temporal -hard
Thin branches of t rees are broken. Usually you
cannot w alk against t he w ind
17 t o 20,5
62 t o 74
9
Temporal hard -very
st rong
Uproot ed t rees and damaged buildings.
20,5 t o 24,5
75 t o 88
10
severe st orm
Serious damage buildings.
24,5 t o 28,3
89 t o 102
11
Temporal hard
Widespread dest ruct ion.
28,3 t o 32,5
103 t o 117
12
Hurricane
Enormous damage.
More t han
32,5
More t han
118
2. The small wind sector
2.1 Beaufort Scale
Содержание E30 PRO
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