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ENERCON E-40 Operation instructions
Page 58 of 96
6 T
HE NACELLE
(
THE MACHINE HOUSE
)
With the ring generator and rotor the nacelle houses two key components of the turbine. Also arranged in the nacelle are the pitch control units, the standby power supplies, the slip ring casing, the nacelle sub-distribution, the winch etc.
6.1 Arrangement of components in and on the E-40 nacelle
wind sensor anemometer vane pitch control cabinet battery cabinet relay cabinet generator stator rotor blade control cabinet nacelle stator jib carrier generator rotor blade adapter pitch motor winch main bearing slip ring casing yellow hand railing main carrier yaw motor tower hub main pin
Figure 14: Sketch of the nacelle (cross-section)
The king pin onto which the main carrier of the nacelle is privoted connects the nacelle to the tower. The king pin is provided with a geared ring with external toothing. Two yaw drives with their driving pinions mesh with the geared ring and thus allow the nacelle to rotate. The nacelle itself rests on two friction pads, which by the moment of friction generated against the tower axis, are capable of transmitting the dynamic yaw moments into the tower without putting any strain on the yaw drives.
The nacelle is entered from the upper tower platform through a hinged hatch with fan-type sliding grid in the rear part of the nacelle (see also figure 2 in chapter 2).
The hinged hatch, which is secured with a bracket, first has to be released. Then you can enter the nacelle via a three-piece folding ladder attached to the hatch. For safety reasons it is necessary to close the fan-type sliding grid after having entered the nacelle. By opening a second sliding grid arranged behind the first one on the
The nacelle (the machine house)
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