USSR alternative current 1150 kV overhead line Barnaul-Chelybinsk
2022, near with Kostanay city, KZ

USSR alternative current 1150 kV overhead line Barnaul-Chelybinsk

Ultra-high-voltage electricity transmission 1150 kV has been used in USSR since 1988 till 1991 to transmit alternating current (AC) over long distance to unify in one large power system Sibirian hydro power plants, coal thermal power plants of Kazakhstan and Ural, and nuclear power plants at Central Part of Russian Federation.

Route of AC 1150 kV transmission

The electrical transmission had been commisioned in 1988 with two segments: Ekibastuz - Kokchetav and Kokchetav - Kostanay, total lenth was about 432 km, each phase had 8 wires to prevent corona.

Commisioning of first segment AC 1150 kV OHL Ekibastuz - Kokchetav 28 of August 1985

OHL was builded with nabla (atled) towers:

Nabla support poles
Support pole
Ancor and support poles, characteristic of electrical insulation
Near with Barnaul city, last segment of 1150 kV OHL (1998) Barnaul - Itat
1150 kV disconnectors


Ekibastuz 1150 kv as well was interconnected

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