1)  Conductor: Cu or Al
2)  Insulation: XLPE
3)  Armour: Steel tape or Steel wire for  Medium voltage underground cable
4)  Sheath: PVC or LSZH
5)  Voltage rate:3-35KV
6)  No. of Core: 1,3 for Medium voltage underground cable
7)  Standard: IEC 60331, AS/NZS 1429.1, BS6622 for Medium voltage underground cable