It is Aluminium conductor power cable with steel tape armour.

AL/XLPE/PVC/STA/PVC

Medium voltage power cable is 3/6KV,6/6KV,6/10KV,8.7/15KV,21/35KV,26/35KV

1)XLPE insualted
2)PVC out sheath
3)with conductor screen;insulation screen;metal copper wire screen
4)With Steel tape armour or steel wire armour or not according to your requirements
4)cores:1,,3
5)for laying indoors,in tunnels,in ducts