Some are inside and some are outside, it depends on the shape and size of the tower. The towers of large wind turbines are relatively thick. Generally, one can climb from the internal hoist or ladder and directly enter the wind turbine engine room (the engine room cover can be opened from the inside). Another method is to climb to the maintenance platform from the outside using a ladder. Small and medium-sized wind turbines are usually maintained by crane or by placing them on a tower.
90 tons. The wind turbine cabin cover serves as the protective shell of the wind turbine, and its reliability determines the stability and service life of the wind turbine operation. The materials needed to cover the wind turbine blade nacelle are very heavy, totaling 90 tons. Wind turbine cabin cover covers all cabin components and insulates itfrom the outside.