IEC 60708 pdf download Low-frequency cables with polyolefin insulation and moisture barrier polyolefin sheath This standard is intended to define polyolefin-insulated cables for insertion into local outdoornetworks. This standard is applicable to polyolefin insulated and moisture barrier polyolefin sheathedtelephone cables, filied or unfilled with copper conductors, and used as: a) Cables suitable for installation in ducts. b) Cables suitable for...