10kV Rated 100% Copper HL+XLPE+PA Submersible Pump Winding Wire for Mining Dewatering

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Core Technical Specifications & Construction

Every production process is strictly controlled by Zhengzhou Tasuu Windingwire Industry Co., Ltd. to meet the extreme reliability requirements of mining applications:

1. ‌100% High-purity Oxygen-free Copper Conductor‌
   Adopting 99.99% OFHC copper that fully complies with GB/T 3953 standard, the conductor is available in multi-strand compacted configurations (7/19/37/61 strands) to achieve ultra-low resistivity, stable high current-carrying capacity and excellent tensile strength. The strict wire diameter tolerance is controlled within ±0.05mm, and the bare wire rebound degree is limited to 3°-5°, which prevents conductor breakage during winding embedding, assembly and the process of lowering the submersible pump into hundreds of meters deep mine shafts. It completely avoids overheating, extra power loss and premature aging risks caused by impure copper or copper-clad aluminum conductors.
2. ‌HL Semi-conductive Inner Layer‌
   The seamless extruded semi-conductive layer eliminates all micro air gaps between the copper conductor and the main insulation, fully homogenizing the electric field distribution around the conductor. It fundamentally suppresses partial discharge erosion under 10kV rated voltage, and blocks the penetration path of mine water molecules along the conductor surface, preventing water tree aging which accounts for over 70% of high-voltage insulation breakdown in submerged mining environments.
3. ‌XLPE Cross-linked Polyethylene Main Insulation‌
   The thickened 10kV-grade XLPE insulation features a dense cross-linked molecular structure, with a long-term allowable operating temperature of 90°C and a 1-minute water-immersion withstand voltage up to 30kV, reserving sufficient safety margin against instantaneous overvoltage from grid fluctuation and variable frequency start-up. It maintains stable dielectric performance even under 1000m-level deep water pressure, far exceeding the service life of ordinary PE insulation.
4. ‌PA Polyamide Outer Protective Sheath‌
   The high-modulus modified PA sheath provides secondary mechanical and chemical protection for XLPE insulation. It has outstanding abrasion resistance against sediment particles in mine water, tear resistance during motor winding, and excellent corrosion resistance to acidic, alkaline and oily components in mining wastewater. It effectively prevents insulation scratches and water ingress throughout the 15+ year design service life of the submersible pump.

Mining-oriented Performance Advantages

Tailored for underground mining dewatering scenarios, this product solves the long-standing pain points of ordinary submersible winding wires:

• ‌Zero Partial Discharge Design‌: The HL homogenization structure ensures no partial discharge occurs under rated 10kV operating voltage, which extends the insulation service life by more than 3 times compared with traditional non-semi-conductive layer winding wires.
• ‌Mining Water Adaptability‌: Passed long-term immersion test in mine water with pH 4-10, temperature ≤50°C and solid particle content ≤3%, no insulation swelling, cracking or performance degradation occurs.
• ‌High Tensile Strength‌: The integrated co-extrusion structure can withstand the pulling force of lifting and lowering large dewatering pumps in vertical shafts, avoiding hidden insulation damage during on-site installation.
• ‌Anti-variable Frequency Impact‌: The uniform insulation thickness and stable dielectric property can resist the high-frequency pulse impact from VFD (variable frequency drive) units widely used in modern intelligent mine dewatering systems, effectively extending the anti-corona service life.
• ‌Strict Quality Traceability‌: Every production batch undergoes full tests including conductor resistance check, 1-minute water-immersion high voltage test, insulation thickness inspection and partial discharge detection, all test reports are available for mining safety compliance audit.

Procurement & Application Guidance for Mining Operators

Zhengzhou Tasuu Windingwire Industry Co., Ltd. provides full lifecycle technical support for global mining customers:

1. ‌Typical Application Scenarios‌
   It is perfectly matched for 10kV high-power main drainage submersible pumps in coal mines, metal mines and non-metal mines, emergency flood rescue dewatering units, and large-flow submersible pumps for post-flood mine recovery. It also adapts to the dewatering demands of deep foundation pit engineering in open-pit mines and underground tunnel construction.
2. ‌Customization Support‌
   We can provide non-standard conductor cross-section, special insulation thickness and anti-corrosion modified PA sheath solutions according to the actual power, submergence depth and on-site water quality parameters of the customer’s submersible pump, to avoid the mismatch risk caused by general model selection.
3. ‌Supply Chain Guarantee‌
   As a professional winding wire manufacturer with focused production capacity, we can deliver bulk orders within 15-20 working days, and provide emergency small-batch supply for mine maintenance and rush repair scenarios to minimize the downtime loss caused by dewatering equipment failure.
4. ‌Compliance Documents‌
   Full set of documents including factory test reports, industry standard conformity certificates, mining product safety related audit materials can be provided to support customers’ tendering and equipment access procedures.