6/35kV Medium Voltage Power Distribution Series

This series is engineered for primary electrical grids, heavy industrial plants, and large-scale renewable energy (wind/solar) integration at 6/35kV.

Conductor, Insulation, and Screening Combinations

♦ Conductors: High-purity electrolytic copper (CU) or electrical-grade aluminum (AL).

♦ Insulation & Sheath: Formulated with 90°C high-thermal XLPE insulation as the standard dielectric layer. The external protective jacket can be selected independently between premium PVC and PE to fulfill specific waterproofing and burial depth requirements.

♦ Screening Options: Precision-formed with Copper Tape Screen (CTS), Copper Wire Screen (CWS), or dual combinations (CTS&CWS) to ensure optimal electromagnetic shielding and grounding integrity.

♦ Specific Selection: Selection depends on project ampacity, grid load, and environment. For example: continuous high-thermal operations, stable electro-static field distribution, or sub-grade moisture barriers — all achievable through material combinations.

Mechanical Protection and Optional Upgrades

Standard configurations include non-armoured and heavy armoured designs. Optional add-ons:

♦ LSZH compounds for transit tunnels or mass-populated public grids

♦ Mica-tape fire-resistant (FR) barriers for critical backup emergency circuits

♦ Longitudinal water-blocking swelling tapes to prevent water-treeing inside insulation

♦ Anti-termite / anti-rodent chemical sheaths for harsh subterranean protection

Compliance

All cables comply with IEC 60502-2. Third-party test reports available upon request.

STA Armoured Cable

Embedded within our premier Medium Voltage Cable echelon, the STA Armoured Cable tier represents the engineering benchmark for direct-burial utility corridors and regional power lines facing continuous surface load. The integration of dual-layered, helically applied galvanized steel tape armour provides a robust physical barrier that effectively counters severe crushing forces and subterranean shifting, ensuring absolute phase stability and zero mechanical degradation over decades of heavy-duty operation.

·Standards: IEC 60502-2

·Cores: 1 Core, 3 Cores (Note: For single-core AC lines, non-magnetic Stainless Steel Tape Armor (SSTA) is used to eliminate eddy currents. 3-Core circuits utilize conventional steel tape)

·Conductors & Screening: Copper or Aluminum conductors backed by premium CTS or CWS capacitive shielding.

·Material Matrix: Formulated with 90°C XLPE insulation. The bedding layers and outer jackets can be matched interchangeably between PE and PVC to fight chemical soil corrosion.

·Optional Upgrade: To survive marshy land or high-water-table routes, longitudinal water-blocking swelling tapes are available upon request to halt axial moisture ingress.

Key Advantages

·Zero Thermal Loop Losses: Implementing SSTA (Stainless Steel Tape Armor) on all 1-Core layouts disrupts the magnetic loop. This completely eliminates eddy current heat generation, protecting the system's total ampacity.

·Subterranean Biological Defense: The overlapping metallic tape barrier provides absolute structural resistance against heavy soil compression, while permanently denying penetration from destructive underground termites and rodents.

·Harsh Environment Adaptability: For chemical refineries or severe industrial zones, the external jacket can be fortified with optional fire-barrier mica layers or advanced self-extinguishing compound jackets on demand.

Application Guideline

·Choose STA: Ideal for direct underground burial and sub-grade utility trenches requiring standard radial crush defense.

·Choose SWA: Highly discouraged for environments featuring continuous vertical suspension, steep inclines, or high-tensile pulling risks. For those conditions, please view our SWA high-tensile series.