ForewordThis revision of IEEE Std 404-1993 now includes a test protocol for joints used on extruded dielectric cables rated 161 000V to 500 000V with a corresponding change in the title of the standard. In addition@ this latest revision has adopted the ac voltage design levels specified in the international standards IEC 60502-4 and IEC 60840 for the ????high voltage time test.????Future revisions of this standard will address the increasing interest in extruded dielectric cable systems with reduced insulation wall thicknesses and with temperature ratings of 105 ??(normal operation)/140 ??(emergency operation).ScopeThis standard establishes electrical ratings and test requirements of cable joints used with extruded and laminated dielectric shielded cables rated in preferred voltage steps from 2500V to 500 000 V. It also defines a variety of common joint constructions.Joints that connect more than two cables or connect cables with two different conductor sizes are not covered by this standard. However@ manufacturers and users are encouraged to use appropriate parts of this standard to evaluate these joints.