HT Cable Semi-Con

Stress relief.

1. binder — usually a ribbon shape of some material which is spirally wrapped around the items it is to contain and hold in place.

2. extruded — go to the following webpage to get a basic understanding of plastics extrusion: http://en.wikipedia.org/wiki/Plastics_extrusion . A sheath or jacket is an extruded overcoat of [near] constant thickness. A serving is one that the coating is impregnated into gaps of the substrate (such as the gaps between the steel wire armor, embedding the wire in the coating) and accomplished in a one extruder process. A bedding is something similar to serving in that voids which make up non-round inner product are filled so that a [near] constant thickness overcoat can be applied and result in a [near] round result.

3. semiconductor insulation layer — The purpose of these semiconductor layers is to influence the electric field strength within the insulation layer. Environmental moisture diffusing into the cable insulation can promote the development of harmful "electrochemical trees" which shorten the useful service life of the cable. In order to avoid the entry of water or water vapours through the outer coating to the cable conductor the outer coating preferably consists of metal or a metal sheet in combination with an outer layer of PE or PVC (layer coating). The avoidance of water intrusion is of particular significance, since intruded water accelerates the aging processes of the insulating materials of the cable made of cross-linked polyethylene and thus leads to an early damage or failure of the cable." Copied in part from: http://www.electronics-manufacturers.com/info/cables-and-connectors/high-voltage-cable.html