EHV Power can provide a full range of planning, engineering, procurement, construction, maintenance and repair services for underground transmission systems up to 345kV:

• HPPT (High Pressure Pipe Type), SCFF (Self Contained Fluid Filled) also known as LPOF (Low Pressure Oil Filled), XLPE (Cross-linked Polyethylene), and GIL (Gas Insulated Lines)
• Feasibility studies, route selection, operational audits, reliability studies
• Cable system design including analysis and calculations for cable support, sheath bonding, and pressure maintenance systems
• Site preparation and civil work for generator stations, underground facilities and other installations
• Ductwork: trenching, directional boring, duct banks, manholes
• High voltage power cable & accessories supply, pulling, splicing, terminating and testing
• Testing: dielectric fluid testing and processing, temperature sensing, factory testing, commissioning

Underground Transmission Project References