Cable lines

Cable line construction from Structum

Electrical energy is an essential part of today’s life. The rapid growth of construction in cities raises the question of how to deliver electric power to end consumers in high-density housing. Given that constructing overhead power lines is cities is an extremely complicated task, or sometimes not feasible at all, building cable lines seems to be the best alternative ensuring the transmission of electric power to switchgears. A notable feature of cable lines is that they can be laid underground, through cable ducts or pipes, on support structures, as well as underwater. Overall, cable line installation is possible in virtually any conditions.

Cable lines have a number of benefits, such as:

  • high reliability thanks to the reduced impact of weather conditions on the electrical grid (e.g. glaze ice, wind or lightning);
  • lower levels of electromagnetic emission;
  • comparatively small maintenance costs;
  • reasonable land use;
  • no obstacles to economic activities in the vicinity of the cable line;
  • resistance to third-party mechanical impact;
  • moderate environmental effect;
  • a small land size required for cable line construction;
  • sufficient safety.

Structum construction company provides services for the installation of cable lines of various voltage, both for internal and external power grids. We resort to cutting-edge technology, specially selected equipment and quality materials.

While constructing cable lines, we use cable products with heat-resistant extruded insulation (cross-linked polyethylene and ethylene propylene rubber) from both Ukrainian and global manufacturers.

Cable lines

Cable line design and engineering is an inherent initial process in construction implementation. It involves the following steps:

  • define the shortest optimal route for laying the cable line;
  • draw up a site diagram considering the terrain features, results of geodetic surveys and possible intersection with other underground utility lines;
  • specify the technical characteristics of the cable line and support structures according to the desired current capacity, soil type, road surface, etc.

Furthermore, the process of cable line engineering and design includes construction budgeting and creating the necessary package of technical documentation.

Key stages of cable line construction

The following step after cable line design and engineering, which also implies creating submittals and obtaining a positive expert opinion, is the implementation of cable line construction, namely:

  1. Preparing and laying out the right-of-way.
  2. Trenching.
  3. Adjusting the trench for laying the cable lines.
  4. Mounting cable pulling rollers and additional pulling equipment.
  5. Cable pulling.
  6. Fastening the cable line according to the project design option.
  7. Checking the integrity of insulation.
  8. Installing cable connecting boxes and terminal boxes.
  9. Startup and adjustment.

Structum completes construction works at all stages – from cable line design to commissioning – with a high degree of professionalism, in full compliance with the design documentation and regulations and within the specified time framework. With our high-qualified staff, specialized equipment and machines, we are ready to undertake any kind of construction, installation, maintenance and startup works.

laying the cable lines

Cable line restoration and maintenance

The maintenance or restoration of cable lines is needed, to name but a few, in the event of natural or physical wearing, mechanical interference into the cable line, or if a higher current capacity is required.

Structum offers a range of cable line maintenance and restoration services:

  • measuring the cable line before and after the maintenance works;
  • finding the damaged cable line section;
  • replacement of the damaged cable line section;
  • replacement of terminal boxes, connecting boxes or adapters;
  • cleaning and repair of cable ducts and support structures;
  • reinstallation of cable line sections.

Cable line maintenance and restoration should meet the project design specifications, which are prepared in advance based on the test data, survey and ad-hoc analysis of the overall cable line condition.