IEC 60502-2

Standard Overview

IEC 60502-2:2014 ensures safety, reliability, and performance for medium- to high-voltage power cables in industrial and utility applications. Its strict testing requirements make it a globally recognized benchmark for extruded-insulation cables.

Key Technical Requirements

• Conductor
  • Copper or aluminum per IEC 60228 (Class 1 or 2)
• Insulation
  • XLPE (Cross-linked polyethylene) or EPR (Ethylene Propylene Rubber)
  • Thickness varies based on voltage rating (e.g., 3.4 mm for 6/10 kV cables)
• Shielding
  • Conductor screen (semi-conductive layer)
  • Insulation screen (semi-conductive layer, required for voltages ≥ 6 kV)
• Voltage Rating
  • 6 kV (Um = 7.2 kV) to 30 kV (Um = 36 kV)
• Testing Requirements
  • Partial discharge test (≤ 10 pC at 1.73U₀)
  • 4-hour voltage test (3.5U₀)
  • Tan delta measurement (for HV cables)

Applications

• Power transmission & distribution networks
• Industrial plants & substations
• Renewable energy connections (wind/solar farms)

Compliance &Related Standards

• IEC 60502-1 (1 kV – 3 kV cables)
• IEC 60840 (High-voltage cables up to 150 kV)