XWA 33kV Cable
High-Quality, Durable Power Distribution Solution
Key Specifications & Construction
- Conductor: High-purity annealed Copper (CU) or Aluminum (AL) circular compacted conductors, available in cross-sections from 50mm² to 630mm² (Single Core) and 50mm² to 300mm² (Three Core).
- Insulation: High-grade XLPE (Cross-linked Polyethylene) with a nominal thickness of 8.0mm for superior thermal and electrical performance under high stress.
- Screening: Extruded semi-conductive tape over the conductor and insulation, plus a Copper Tape (CuT) screen to control electric fields and prevent partial discharges.
- Armour: Aluminum Wire Armour (AWA) for single-core cables and Steel Wire Armour (SWA) for three-core cables to withstand harsh mechanical stress and direct burial.
- Outer Sheath: Durable PVC compound providing excellent protection against chemicals, sunlight, and mechanical damage.
- Voltage Rating: 19/33kV (Highest System Voltage: 36kV).
- Standards Compliance: IEC 60502-2, IEC 60228, IEC/EN 60332-1-2, GB/T 12706.
Technical Specifications of XWA 33kV Cable
| Item | Parameter | Details |
|---|---|---|
| Conductor | Material | High-purity Copper (Cu) / Aluminum (Al) |
| Type | Circular compacted | |
| Cross-section | Single Core: 50 mm² ~ 630 mm² Three Core: 50 mm² ~ 300 mm² | |
| Insulation | Material | XLPE (Cross-linked Polyethylene) |
| Thickness | 8.0 mm (Nominal) | |
| Screen | Semi-Conductive Screen | SC Tape |
| Metallic Screen | Copper Tape (CuT) (Thickness: 0.075 mm) | |
| Armoring | Type | AWA (Aluminium Wire) for Single Core Cables SWA (Steel Wire) for Three Core Cables |
| Wire Diameter | 2.0 mm ~ 3.15 mm (depending on cable size) | |
| Sheath | Inner Bedding | Extruded Bedding (Thickness: 1.2 mm to 2.3 mm) |
| Outer Sheath Material | PVC | |
| Performance | Voltage Rating | 19/33kV (Highest System Voltage: 36kV) |
| Max. Short Circuit Temp. | 250°C | |
| Standards | Compliance | IEC 60502-2 |
Applications of XWA 33kV Medium Voltage Cable
Operating at a highest system voltage of 36kV, the XWA 33kV medium voltage underground cable series is engineered for primary power sub-transmission and massive-scale distribution. The robust XLPE insulation and heavy-duty armoring make it the definitive choice for the following high-capacity applications:
- Primary Utility Networks & Substations: Acts as the critical link between main high-voltage transmission grids and local city substations. These cables form the heavy-duty underground power infrastructure that utilities rely on for regional power routing.
- Renewable Energy Integration: The industry standard for medium-voltage collector networks. Used extensively to connect individual wind turbines (inter-array networks) or solar farm step-up transformers to the main electrical grid.
- Heavy Mining & Industrial Plants: Ideal for deep underground mining operations, steel mills, and petrochemical plants where massive power loads must be transported over long distances with minimal voltage drop. The rugged steel and aluminum wire armoring provides essential protection in these harsh environments.
- Railway & Transit Electrification: Serves as the primary incoming power feeder for railway traction substations, massive airport expansions, and heavy transit hubs requiring uninterrupted, high-capacity power.
- Hyperscale Data Centers: Used as the primary high-voltage incoming line for massive data centers and mega-factories that require a dedicated, ultra-reliable power supply directly from the utility provider.
Why Choose XWA for Your 11kV XLPE Cable Needs?
When sourcing an 33kV XLPE cable, you need a proven manufacturing partner. Here is why global engineering teams trust XWA for their critical power line projects:
- Uncompromising Quality: Our cables strictly meet IEC 60502-2 standards and are backed by ISO 9001, ISO 14001, and BASEC certifications.
- Tailored Engineering: We offer dedicated technical support to help you select or custom-design the exact electrical cable to fit your unique environmental and load requirements.
- Direct-from-Factory Value: Operating our own modern facilities in Zhengzhou allows us to eliminate third-party markups, guaranteeing a highly competitive 11kv cable price.
- Proven Logistics: With experience exporting to over 60 countries, we ensure your cables are securely wound on heavy-duty drums and delivered safely anywhere in the world.
Installation & Support
To maximize the performance and lifespan of your XWA copper and aluminum cables, we provide comprehensive technical support and installation guidelines:
- Follow all national and local electrical codes for safe high-voltage installation.
- Maintain strictly calculated bending radii to avoid damage to the 8.0mm XLPE insulation and copper screen layers.
- Use fully compatible 36kV termination and splicing kits designed specifically for 33kV XLPE applications.
- Ensure proper grounding of the AWA or SWA wire armor for safety and compliance.
Our technical team is available to assist with custom engineering solutions, project planning, and selecting the optimal cross-section for your high-capacity load requirements.
FAQs of 33kV Cable
Q: What is the difference between a 33kV cable and a 35kV cable?
A: In the power transmission industry, “33kV” and “35kV” generally refer to the exact same class of medium-to-high voltage cable, with the terminology differing based on regional naming conventions. Under IEC 60502-2 designations, these are classified as 19/33kV or 18/30kV cables. Both designations share a highest system voltage of 36kV. XWA offers 33kV and 35kV underground cables to meet the requirements of various power transmission applications.
Should I choose a Single-Core or Three-Core 33kV cable for my project?
A: It depends on your load requirements and installation environment. Our three-core 33kV cables utilize Steel Wire Armour (SWA) and are available up to 300mm², making them highly efficient for standard trenching and ducting in utility grids. For massive power loads requiring larger cross-sections, our single-core 33kV cables utilize Aluminium Wire Armour (AWA) to prevent magnetic induction and are available up to 630mm².
Q: What factors determine the 33kV cable price?
A: The final cost of high-capacity cables fluctuates based on several variables. The primary driver is the conductor material—Copper (Cu) is a premium conductor compared to Aluminum (Al). Furthermore, the specific cross-sectional area, the armoring type, and the total length of your order will dictate the final 33kV XLPE cable price. Because we manufacture directly, we eliminate third-party markups. Contact our team with your exact project specs for a highly competitive, customized quote.
Q: Are these 33kV cables suitable for renewable energy farms?
A: Absolutely. The 19/33kV range is the global industry standard for medium-voltage collector networks in both solar and wind farm projects. The robust PVC outer sheath and heavy wire armoring provide the mechanical protection necessary for direct burial in harsh, remote environments, efficiently stepping up and transmitting power to the main grid.
Q: What other medium voltage cables do you provide besides the 33kV series?
A: Our manufacturing expertise spans a comprehensive range of medium voltage power distribution solutions. We produce 6kV MV cables, 10kV MV cables, 11kV MV cables, 35kV MV cables and so on.