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Installing Sensor Fibers or Cables for Power Cables

Distributive Temperature Sensing (DTS) with optical fibers is a way to optimize the current rating of power cables. Today, power cables often contain optical fibers or microducts to install them, but a lot of installed cables are without those fibers. When power cables are in ducts, there is place to override them with optical cables. But the wedge between cable and duct makes this difficult. In this paper a method is described where first a microduct is floated in, and later the optical cable is installed. Special tricks are used for the installation, like “out of wedge” installation, the use of a “JetPig” to propel the front end of the cable and sinking the optical cable close to the power cable after installation.

IWCS 2015
V. Chaves, W. Griffioen