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ENERCON E-40 Operating Instructions
Page 87 of 96
Versions
Designation
Length of tower
Hub height
, bottom
, top
Weight
Segments:
Height [m]
Weight [t]
Wind zone (DiBT)
Corrosion protection
Ascent
No. of platforms
E-40/B/42/2
41.5 m
43.1 m
1.780 mm
984 mm
90 t
2
20,0/ 22,1
52 /38
III
Reinforced concrete towers
E-40/B/48/3
47.8 m
49.3 m
1.940 mm
E-40/B/53/03
53.3
54.9
2.140 mm
E-40/B/63/3
63.6 m
65.2 m
2.140 mm
1.020 mm
106 t
1.128 mm k.A.
1.020 mm k.A.
3 4
III for all steel parts
4
20,1/ 16,1/ 12,0 14,1/ 16,1/ 12,1 /10,1 20,1/ 20,1/ 12,1/ 10,1
32/ 37 /37 k.A.
k.A.
III II safety climbing ladder installed outside the tower external
11.1.3 Sound power level of the E-40 / 500 kW tower height
42 m
44 m
48 m
53 m
63 m hub height sound power level and tonality according to KÖTTER
98,9 dB(A) 0 dB 44 m
46 m
50 m
55 m
65 m
99,1 dB(A) 0 dB
99,2 dB(A) 0 dB
99,5 dB(A) 0 dB guraranteed sound power level and tonality
98,3 dB(A) < 1 dB
98.4 dB(A) 1 dB
98,5 dB(A) < 1 dB
99,0 dB(A) < 1 dB
99,0 dB(A) < 1 dB
1. These data is based on the measurements of the E-40 sound power level carried out by Kötter Beratende Ingenieure, Rheine according to their latest measurement report 23554-2.001 dated Jan. 15, 1998, valid for a reference wind speed of 8 m/s in 10 m height with a measurements accuracy of > 2 dB(A).
2. The measurements of the sound power level have been carried out i.a. according to the IEA guidelines („Recommended Practices for Wind Turbine Testing and Evaluation - 4. Acoustics: Measurement of Noise Emission from Wind Turbines, 3. Edition 1994“).
3. For a windspeed > 12 m/s in hub height (rated power) ENERCON guarantees a sound power level of 101 dB(A) and a tonality of < 1 dB.
4. Zero tonality corresponds to L tn
= L pt
- L pn
< - 2 dB according to IEC standard
88/48/CDV (page 21/22).
5. Based on modifications in the operational mode and in view of the abovementioned measurement accuracy ENERCON is guaranteeing lower values of the sound power level than those certified by Kötter.
6. The mechanical concept of the ENERCON turbines (no fast rotating parts therefore no mechanical wear) guarantees that no increase of machinery noise will occur during the entire lifetime of the turbines.
7. Please ask ENERCON for the most resent sound data.
Annex
ENERCON E-40 Operating Instructions
Page 88 of 96
)] (A dB l [ ve le ure ss re d p un So
Figure 26: Diagram of sound power levels
Annex
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