Standard Overview

IEC 60502-2 specifies the requirements for power cables with extruded insulation and rated voltages from 6 kV up to 30 kV. It mainly covers medium voltage (MV) power cables used for electrical distribution systems.

The standard applies to cables with copper or aluminum conductors, XLPE insulation, and various metallic screening and protective sheath designs. It defines requirements for cable construction, insulation performance, electrical characteristics, dimensions, and testing methods to ensure reliable operation in medium voltage networks.

Key Technical Requirements

Conductor: Copper or aluminum conductors complying with IEC 60228 requirements

Insulation: XLPE (Cross-Linked Polyethylene) insulation for medium voltage applications

Screening: Metallic conductor screen, insulation screen, copper tape screen, or copper wire screen

Armouring: Optional steel tape, steel wire, or aluminum wire armouring depending on installation requirements

Rated Voltage: 3.6/6kV up to 18/30kV (commonly 6/10kV, 8.7/15kV, 12/20kV, 18/30kV)

Testing: Electrical, mechanical, and routine tests to verify insulation integrity and cable performance

Applications

IEC 60502-2 compliant cables are widely used for:

Medium voltage distribution networks

Underground power transmission systems

Industrial power supply networks

Renewable energy projects such as wind and solar farms

Utility and infrastructure projects

Related Standards

IEC 60228 — Conductors of insulated cables

IEC 60502-1 — Low voltage power cables up to 3kV

IEC 60332 — Flame propagation tests on electric cables

IEC 60840 — High voltage cables above 30kV