... XLPE insulation / copper tape or copper wire screen / galvanized steel wire armored / PVC or PE sheath / power cable, The ... sheath: Polyvinyl chloride (PVC) Amour: Galvanized steel wire armored(SWA) or steel tape armored(STA) Sheath: Polyvinyl chloride (PVC ... simple construction, good mechanical, physical and electrical properties, enough safety, it also has good properties of resistance to tracking, ...