A system for an electrical power distribution network includes a plurality of electrical apparatuses, each electrical apparatus including a mechanical connection and at least one electrical connector; and a single-piece unitary support configured to receive and hold the plurality of electrical apparatuses, the support including: a frame including a plurality of mechanical interfaces, each of the mechanical interfaces configured to receive and hold a mechanical connection of one of the plurality of electrical apparatus; a cover extending from a side of the frame; and a panel integrated with the frame, the panel including a plurality of electrical interfaces, each of the plurality of electrical interfaces configured to couple to an electrical connector of one of the electrical apparatuses, the cover positioned over the panel.

A system for an electrical power distribution network includes a plurality of electrical apparatuses, each electrical apparatus including a mechanical connection and at least one electrical connector; and a single-piece unitary support configured to receive and hold the plurality of electrical apparatuses, the support including: a frame including a plurality of mechanical interfaces, each of the mechanical interfaces configured to receive and hold a mechanical connection of one of the plurality of electrical apparatus; a cover extending from a side of the frame; and a panel integrated with the frame, the panel including a plurality of electrical interfaces, each of the plurality of electrical interfaces configured to couple to an electrical connector of one of the electrical apparatuses, the cover positioned over the panel.

A high-voltage overhead electric transmission line extends from a first electrical substation to a second electrical substation and includes at least one T junction that forms a joint with three sections A first section and a second section allow connection between the first and the second electrical substations. A third section allows connection to the high-voltage overhead electric transmission line of a user or a third electrical substation or primary substation. The at least one T junction has a first switchgear unit configured to allow grid reconfigurations and installed on the first section, and a second switchgear unit configured to allow grid reconfigurations and installed on the second section. Each switchgear unit has a plurality of switchgear unit poles. Each switchgear unit pole is associated with a respective phase of the high-voltage overhead electric transmission line and has a line circuit breaker and at least one line disconnector.

A high-voltage overhead electric transmission line extends from a first electrical substation to a second electrical substation and includes at least one T junction that forms a joint with three sections A first section and a second section allow connection between the first and the second electrical substations. A third section allows connection to the high-voltage overhead electric transmission line of a user or a third electrical substation or primary substation. The at least one T junction has a first switchgear unit configured to allow grid reconfigurations and installed on the first section, and a second switchgear unit configured to allow grid reconfigurations and installed on the second section. Each switchgear unit has a plurality of switchgear unit poles. Each switchgear unit pole is associated with a respective phase of the high-voltage overhead electric transmission line and has a line circuit breaker and at least one line disconnector.