Subsea to Topside Cable Transition Joints

Power CSL offers custom designed I-tube mounted transition joints for tie-in of subsea cable or umbilical power cores into oil platform / FPSO electrical systems.

The products which are suitable for installation in zone rated areas on offshore installations utilise Power CSL’s proven jointing technology within purpose designed enclosures. Careful attention is given to the interface with I-tube flange mounting to ensure quick and trouble-free installation.

The transition joint can be configured to include MV power core, optical and LV control core connections and can be provided with an integral hang-off mechanism

If required Power CSL can supply a complete package of transition joint, junction boxes and terminations.

Power CSL offers trained offshore certified technicians for installation and testing of transition joints and terminations.

The applications for Power CSL’s subsea cable or umbilical topside transition joint include :

  • Connection of subsea cable or umbilical power cores to oil & gas platform topside cables
  • Connection of subsea cable or umbilical power cores on FPSO manifold deck.

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Products & Services

Power CSL provides a complete range of subsea cable and umbilical products and services – from factory jointing (splicing) of medium and high voltage power cores to thoroughly engineered and tested cable accessories including offshore repair joints.


Power CSL’s facilities at its headquarters in Kent, UK, includes impressively equipped cable jointing workshops, a dedicated high voltage laboratory and a wide range of analytical, mechanical, and hyperbaric test capabilities.