Project Detail

34.5 kV / 12.47 kV Substation

Withheld Upon Owner Request

Scope of Work

Cianbro constructed a new 34.5 kV to 12.47 kV substation adjacent to an existing substation on the same property.  This new substation has 34.5 kV and 15 kV switch structures, 6 – 15 kV switch structures, 3 – 15 kV circuit breakers, 1 – 34.5 kV disconnect switch and an interconnecting aluminum bus.

Project Details

  • Erected Steel
    • 34.5 kV bus, one station service structure, two takeoff structures (3151 line with vipers), and one switch stand
    • 12.47 kV bus, one station service structure, mobile takeoff structure, two 12 kV feeders, and six switch stands
  • Installed Major Equipment
    • One 34.5 kV, 1200A circuit breaker, three 12.5 kV circuit breakers
    • Two 34.5 kV Viper reclosers, two 34.5 kV Viper bypass switches
    • Two 34.5 kV Viper sectionalizing switch, 34.5 kV and 12 kV bus
  • Installed auxiliary equipment and fit-out of the new control house

Lean, Innovative, and Unique Project Solutions

Although this was a Greenfield substation, construction was performed immediately adjacent to energized 34.5 kV and 12.47 kV transmission lines that surrounded the yard; due to this complexity, Cianbro successfully executed detailed Activity Planning and Safety Management.