Lattice tower and an erection method for a wind turbine with a lattice tower

A method of erecting a wind turbine, comprising the following steps:

• a) providing a hub (9), some blades (11), a nacelle (13), and a lattice tower (15) comprising a first section (21) composed of a first part (23) and a second part (25), and a second section (27) pivotally connected along an axis (17) at a height H, a lower part of the lattice tower (15), below height H, being composed by the second section (27), that includes lower and upper legs (31, 33) of the lattice tower (15), and the first part (23) of the first section (21);
• and an upper part of the lattice tower (15), above height H, being composed by the second part (25) of the first section (21);
• b) assembling on ground the wind turbine, with the blades (11) placed parallel to the ground and the nacelle (13) resting on a carrier (19), and hinging the lattice tower lower legs (31) on first foundation corners (41);
• c) raising the second section (27) and having the lattice tower upper legs (33) fixed to second foundation corners (43);
• and
• d) raising the first section (21) and having its first part (23) fixed to the second section (27).