TOWER FOR A HIGH-VOLTAGE OVERHEAD ELECTRIC TRANSMISSION LINE, EQUIPPED WITH SWITCHGEAR UNIT AND RELATED PROTECTION, COMMAND AND CONTROL SYSTEM

A tower for a high-voltage overhead electric transmission line has a predetermined shape defining an internal volume of the tower, and carries a first tension side of a first line section and a second tension side of a second line section. The first and second tension sides have respective pluralities of first and second tension terminals, each associated with a respective phase of the high-voltage overhead electric transmission line. The tower supports a switchgear unit connected at a first end to the first line section and at a second end to the second line section and configured to modify grid configuration, interrupting and restoring electrical continuity in pre-established points, to interrupt nominal and fault currents, and to carry out safety operations. The switchgear unit has a plurality of switchgear unit poles, each associated with a respective phase of the high-voltage overhead electric transmission line and including a line circuit breaker and at least one line disconnector.