Definition Sheet (PDF)


Both fluid-filled and XLPE High Voltage Underground cables are an essential part of many urban transmission systems. While they offer a number of distinct advantages in certain environments, they are expensive to maintain and replace. Adding to these maintenance costs, many fluid-filled installations have been in operation since the early twentieth century, and a great number of these systems are being operated outside their original design parameters.

The objective of the Transmission Underground Cables Interest Group (TUCIG) is to provide a forum for the exchange of information on cable asset management and to establish and promote techniques and tools for improving the management of fluid-filled and XLPE High Voltage underground cable systems. The group’s current focus is developing a Reference Manual for Transmission Cable Systems, which will include the compilation of best work practices and procedures for the design, maintenance and operation based on utility experience.

Topics and Issues:

  • Asset Health Index Models
  • Preventative & Corrective Maintenance
  • Strategies for Life Cycle Management
  • Means of Minimizing Environmental Impact
Program Services
  • Networking & Information Sharing

    • Annual face-to-face Business Meetings with webinar call-in options
    • 4-5 conference calls and learning webinars
    • Access to a network of ~1,000 electrical utility peers from around the world
  • Industry Benchmarking

    • Requests for Information where your questions or concerns are circulated to other group
      participants with rapid-fire response rates
    • Internal benchmarking surveys for state-of-the-industry intelligence
  • Collaborative Technical Projects

    • The flexibility to support only those projects which are relevant to your organization, meaning you know exactly, where your research dollars are going
    • Supported by CEATI management, participating utilities and consultants work together across all phases of a project’s life-cycle, ensuring your organization receives practical, high-quality deliverables
  • Unparalleled Return on Investment

    • Ability to split project funding costs with other organizations, resulting in highly-leveraged funding opportunities
    • Reduced pricing on published reports, training courses, and industry-open conferences
Project Portfolio

Webinar Library

Magnetic Flux Leakage (MFL) Test Results
Available to Utilities Only   Get Access
May 2021
Solid-State Decoupling Devices for Pipe Cable Systems
Available to Utilities Only   Get Access
October 2020
Cable Rejuvenation Practices
Available to Utilities Only   Get Access
September 2020
Sheath Fault Failure
Available to Utilities Only   Get Access
June 2020
Conversion of HPFF using Steel Pipe to Install XLPE – Prototype Project
Available to Utilities Only   Get Access
February 2020
City Cables
Available to Utilities Only   Get Access
August 2014
Upcoming Events
TUCIG Fall 2021 General Meeting
Attendance Open to Electrical Utilities   Request Invitation
October 2021