This standard is applicable to high-voltage cables. It is intended to give guidance in the selection of the conductor size@ insulation level and construction of cable to be used on three-phase alternating current systems operating at voltages exceeding 1 kV. It also summarizes the information which is necessary to enable the appropriate selection to be made. Unless explicitly mentioned in particular clauses@ the contents are applicable to cables of any type. For the time being@ only alternating current systems are dealt with; direct current systems may be considered in a future publication.