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ENERCON E-40 Operation instructions
Page 77 of 96
8 O
PTIONAL
E
QUIPMENT
8.1 Obstruction lighting / Hazard beacon
Depending on the authorities' requirements and on the geographical situation of the turbine (e.g. vicinity to an airport / airfield) it may be necessary to install an obstruction lighting or hazard beacon on the turbine. At present, ENERCON wind energy converters can be equipped with four different types of obstruction lighting. Please check your contract documents to find out if your turbine is equipped with obstruction lighting and with which type, if this the case.
8.1.1 Obstruction lighting with standby power supply and monitoring
The obstruction lighting with standby power supply consists of double lights with a lamp wattage of 2 x 100 W and a mean intensity of light of at least 10 cd in the horizontal radiation range. The standby power supply consists of lead storage batteries providing a stored energy time of at least 10 hours in case of a failure of the utility's network.
The lights are installed on top of the nacelle at a distance of 1.5 m from each other and in such a way that they are clearly visible from all directions. Thanks to the distance between the lamps they cannot be covered and blocked from view by a rotor blade when the rotor is at a standstill (lack of wind).
The lamps are switched on by a photo-electric lighting controller.
The obstruction lighting can be supplied with electrical energy alternatively by two phases of the three-phase current, which means that if one phase should fail, the other phase automatically takes over the power supply.
The lighting system is also provided with a fault indicator output which will send a signal to the control system in case of a fault. The following malfunctions are indicated:
failure of one / both supply voltages (phases),
failure of one / both lights,
failure of the photo-electric lighting controller,
fault in the battery charging device,
failure of the batteries and
fault in the air-conditioning.
The electronics for the obstruction lighting are installed in a fully air-conditioned cabinet in the nacelle. On the outside an on-off switch and a fault signal and operation signal lamp are mounted. Inside the cabinet a switch is provided by means of which the lighting can be changed from automatic mode to manual mode for maintenance purposes. An operating hour meter installed in the cabinet registers the operating hours of the obstruction lighting.
8.1.2 Obstruction lighting without standby power supply, but including monitoring
All functions are identical with section 8.1.1, but without standby power and airconditioning.
Optional Equipment
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