YJV 8.7/15kV Three-Core Copper XLPE-Insulated MV Power Cable
Three-core copper YJV at 8.7/15kV is the workhorse for 11kV class distribution networks: utility primary feeders, industrial site MV grids, and substation-to-MCC links. Conductor screen, XLPE insulation, insulation screen, copper-tape metallic screen, PVC inner bedding, optional armor, PVC outer sheath.
Technical Specifications
| Conductor material | Compacted copper, Class 2 stranded |
| Conductor screen | Semi-conductive XLPE, extruded |
| Insulation | XLPE, triple-extruded, dry-cured |
| Insulation screen | Semi-conductive XLPE, peelable |
| Metallic screen | Copper tape, 0.1mm thickness |
| Inner sheath | PVC bedding |
| Outer sheath | PVC, ST2 compound |
| Rated voltage U₀/U/Um | 8.7/15/17.5 kV |
| Max conductor temperature | 90 °C |
| Partial-discharge test voltage | 1.73 × U₀ (15 pC limit) |
| Cross-sections available | 25 – 300 mm² |
| Core configuration | 3-core |
Compliance Standards
- ✓IEC 60502-2
- ✓GB/T 12706.2
- ✓IEC 60287 (Current rating)
Overview
Compacted copper conductor over a semi-conductive conductor screen, triple-extruded XLPE insulation, semi-conductive insulation screen, copper-tape metallic screen, PVC bedding, optionally galvanized steel-tape or steel-wire armor, and PVC outer sheath. The full IEC 60502-2 stack tested at 1.73 × U₀ partial discharge limit before reel ships. Conductor size 25 to 300 mm² covers virtually every utility-scale 11kV feeder application.
Key Features
Triple-extruded XLPE
Conductor screen, insulation, insulation screen extruded in one pass — no air voids, no contaminants at interfaces, no PD initiation sites.
PD-tested 1.73 × U₀
Every reel partial-discharge tested at 1.73 × U₀ with a 15pC acceptance limit before shipment.
Applications
Utility 11kV distribution
Primary feeders from main substation to area substations, ring main feeds.
Industrial site MV grids
Plant internal MV distribution between switchgear lineups and MV motor feeders.