MV TR-XLPE Cable, Anti-Water-Tree Medium Voltage Cable
MV TR-XLPE Cable, Anti-Water-Tree Medium Voltage Cable
MV TR-XLPE (Tree-Retardant XLPE) medium voltage cable resists water tree damage. Can be manufactured to [IEC](https://webstore.iec.ch/en/publication/2272) specifications. Voltage grades: 6kV, 10kV, 15kV, 20kV, 30kV. Copper or aluminium conductor optional, unarmoured, steel tape armour YJLV22, steel wire armour YJLV32 and HDPE outer sheath available.
What is MV TR-XLPE Cable?
MV stands for Medium Voltage. MV TR-XLPE cable uses Tree-Retardant Cross-Linked Polyethylene insulation, modified to slow the initiation and growth of water trees under moisture and electric field. This cable can be manufactured to IEC specifications. Available voltage grades: 6kV, 10kV, 15kV, 20kV, 30kV
Unlike conventional XLPE, TR-XLPE maintains stable dielectric strength even when trace moisture reaches the insulation layer, greatly extending service life for underground and coastal power distribution networks. Learn more about this ageing issue in our article: Water treeing in XLPE cables
Optional Structure
- Unarmoured: Without metal armour, for installation in tunnels, ducts or indoor racks.
- Steel tape armour (YJLV22): Resists compression and impact damage, suitable for direct burial underground, cannot bear large pulling force.
- Steel wire armour (YJLV32): Able to withstand certain tensile force, suitable for vertical shaft, high drop and underwater laying.
- Outer sheath: HDPE sheath with excellent moisture barrier and chemical resistance, suitable for corrosive soil and salt fog coastal areas.
Matching Accessories
To build a complete anti-water-tree system, we recommend matching with our sealed medium voltage cold shrink cable joints and terminations. Sealing failure at joints is one of the common causes of water tree formation. Also available: water blocking power cable, waterproof sealing tape and on-site partial discharge detection service.
Product Advantages
- Strong resistance to water tree, reduce premature insulation failure
- Can be manufactured to IEC specifications
- Multiple voltage grades: 6kV, 10kV, 15kV, 20kV, 30kV for selection
- Multiple structure options: unarmoured, YJLV22 steel tape armour, YJLV32 steel wire armour
- Flexible configuration: copper / aluminium conductor, armored / non-armored
- HDPE sheath optional for anti-corrosion and moisture blocking
- Full supporting cable accessories for a whole solution
Technical Notes
Water treeing is a hidden insulation ageing problem for XLPE cables. Armour only provides mechanical protection and cannot stop water tree. TR-XLPE insulation is the core solution to this ageing issue. YJLV22 and YJLV32 are Chinese model codes to distinguish armour types for reference.
| Item | Specification |
|---|---|
| Model NO. | MV TR-XLPE (YJLV22 / YJLV32 optional) |
| Application | Underground, Power System, Wet Tunnel, Coastal Areas |
| Conductor Material | Copper / Aluminium |
| Sheath Material | PVC / HDPE (optional) |
| Insulation Material | TR-XLPE (Tree-Retardant XLPE) |
| Material Shape | Round Wire |
| Rated Voltage | 6kV, 10kV, 15kV, 20kV, 30kV |
| Armour Type | Unarmoured / Steel Tape (YJLV22) / Steel Wire (YJLV32) |
| Range of Application | Flame Retardant |
| Anti-Water-Tree Property | Excellent resistance to water treeing in XLPE insulation |
| Executive Standard | GB/T 12706.2, IEC 60502-2 |
| High Cost-Efficiency | Reduces long-term replacement and outage cost |
| Stable Performance | Maintains dielectric strength under trace moisture |
| Low-Temp Resilience | Maintains flexibility and structural integrity at -40°C |
| Weather Resistance | Excellent durability against UV, salt fog and harsh climates |
| Anti-Rodent/Termite | Armoured version protects against biological biting and damage |
| Eco-Friendly | Non-toxic, low-smoke |
| Fire Resistance | Sustains power flow during high-temperature conditions |
| Lightweight Design | Aluminium conductor option lowers shipping cost |
| Transport Package | Wooden drum or steel-wooden drum |