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Cable jointers and cable contractors are faced with options for removing medium-high voltage semi-conductive cable screens, some better than others. Cable jointer tool selection is usually the outcome of cable jointer preference - or a cost-based decision by the Buyer.
One simple option is to use a round file, which will provide a tidy chamfered edge on the cable screen termination point - the cable jointer must then "tram-line" the conductor so that the semi-conductive screen can be removed. When "tram-lining" the semi-con cable screen the cable jointer partially scores the screen - note that damage to the primary insulation would cause partial discharging and ultimately failure of the cable joint or termination. No matter the brand of cable joint or termination, if the cable insulation is cut, failure will occur.
Some cable jointers prefer screen-scoring tools with preset depth cutting to avoid cable insulation damage - to this day medium voltage cable jointers still attack power cables with knives penetrating right through the semi-con screen and into the cable insulation below.
Prysmian TT2532-1 and Prysmian TT2532-2 screen scoring tools ensure cable jointers do not damage the primary insulation. The 2 depths are 0.4mm for 11kV and 0.6mm for 33kV cable screen removal. See also Boddingtons 244400 MV-HV Cable Stripping Tools For Peelable Semi Conductive Screens.
Using the correct tools to prepare industrial and utility cables before cable jointing and terminating reduces catastrophic cable failures.
LV-HV cable jointing tools enable cable preparation, stripping and cutting of insulation (XLPE, EPR), semi-conductive screens (bonded and peelable) and cable sheaths (PVC, PE, EPR) from single and multi-core cables.
Category: HV Cable Jointing & Terminating