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Underground Cable

Underground Cable Systems

Mechanical and electrical design of high-voltage underground and submarine transmission cable systems, rated up to 525 kV.

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Underground cable termination support structure detail

Capability overview

Our team applies the latest analysis programs and stays current with the international standards bodies that govern transmission and distribution engineering. We integrate well with client teams and act as owner's engineer where required.

  • P.Eng.-led, peer-reviewed deliverables
  • CSA, BC Hydro and utility standard compliance
  • Independent, manufacturer-neutral recommendations

Underground & submarine cable services

  • Mechanical design of equipment for HV underground transmission cable systems
  • Land and underwater surveys, reviews and route selection
  • Specification and drawing preparation
  • Trenchless river and road crossing design
  • Straight-through and oil-stop joints for SCFF cables
  • Cable accessory design for low and high voltage cables
  • HV self-contained oil-filled cable and support structure design
  • Optimisation of cables, terminations, joints, oil-feeding and cross-bonding systems
  • Flexible submarine cable joint development
  • Condition assessment of EHV cable systems
  • Bid evaluation, contractor design approvals and factory testing
  • Site testing, construction inspection and commissioning
  • Seismic performance evaluation up to 525 kV

Discuss your underground cable scope

Share drawings, voltage class and project constraints — we'll come back with a tailored approach and proposal.

Contact MADI