APPENDIX B BEAUFORT WIND SCALE
31
It is strongly advised to manually turn on your Mechanical Stop Switch during periods of high
winds (upwards of Beaufort Wind Scale 7)
Beaufort
No.
Description
Calm
Avg. Wind
Speed (knot/h)
Avg. Wind
Speed (km/h)
Avg. Wind
Speed (m/s)
Avg. Wind
Speed (mi/h)
image
0
Clam
<1
<2
<0.55
< 1.24
1
Light air
1 – 3
2 - 6
0.55~1.66
1.24~3.73
2
Light breeze
4 – 6
7 – 12
1.95~3.33
4.35~7.46
3
Gentle
breeze
7 – 10
13 – 19
3.61~5.27
8.08~11.81
4
Moderate
breeze
11 – 16
20 – 30
5.55-8.33
12.43~18.64
5
Fresh breeze
17 – 21
31 – 40
8.61-11.11
19.26~24.85
6
Strong breeze
22 – 27
41 – 51
11.38~14.16
25.48~31.69
7
Moderate gale
28 – 33
52 – 62
14.45~17.22
32.31~38.53
8
Fresh gale
34 – 40
63 – 75
17.5~20.83
39.15~46.60
9
Strong gale
41 – 47
76 – 87
21.11~24.16
47.22~54.06
10
Storm
48 – 55
88 – 103
24.44~28.61
54.68~64.00
11
Violent storm
56 – 63
104 – 117
28.88~32.5
64.62~72.70
12
Hurricane
≥ 64
≥ 118
>32.77
> 73.32
Summary of Contents for 600 Watts Wind Turbine
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