Bevel-helical gear Reduction Boxes B4 Size heating element heating elements heating B4-FH-11-D

Flender/Flender Gear Units/Bevel-helical gear Reduction Boxes B4

wever, the turbine isalso well-suited for erection on land in placeswhere high annual output is both desirableand/or required. The NM 2/7 is the first NEG Micon turbi- ne to feature what are known as active stallblades, which make it possible to adjust theposition of the blades to match the variablewind and climate conditions at the erectionsite. Thorough testing of the turbine wascarried out by erecting large number ofprototypes on sites in the Orkney Islands andat Hagesholm in Denmark. At the end of theyear, the turbine was released for 0-series,and some of the turbines from this series willbe erected off-shore at Yttre Stengrund nearGotland, Sweden, in spring 2. An approved solution to the gearbox problem Following the discovery of damage to Flender PEAC 4 and PEAC 4 gears, renovationof the 1,2 gearboxes affected - which hadbeen fitted in wind turbines in 1 countries -was instigated during the year. In spring, an independent enquiry was carried out and monitored by an international steer-ing committee whose members were selectedby some of NEG Micons major customers.The enquiry verified the technical solutionthat NEG Micon had developed in collabora-tion with Flender, the German gearboxsupplier. functional test at maximum loadswas carried out at Flender, and the solutionwas subsequently tested in wind turbines.The solution was finally approved in June, after which the retrofit programme wasgradually initiated. At the end of the year, almost 2 gearboxes had been renovated, equivalent to approxi-mately 1 per cent of the total number in-volved. This figure is slightly lower thanplanned. The delay in the original schedule isdue to the desire to carry out additional testsand measurements of the gearboxes, and weaim to make up for this difference in 2. The replacements are prioritised on the basis of information concerning the age and pro-duction hours of the individual turbines, aswell as their current condition, which ismonitored via installed alarms. In normalcond