WDZ-YJLHY23 26/35kV LSZH Aluminium Alloy Conductor Anti-Corrosion Direct Buried MV Cable for New Energy & Municipal Grid Upgrading
Productspecificatie
Plaats van herkomst:
Anhui China
Merknaam:
JinHong
Certificering:
CE、ROHS
Modelnummer:
WDZ-YJLHY23
Minimale bestelhoeveelheid:
500M
Prijs:
15-32USD/m
Levertijd:
30DAGEN
Betalingsvoorwaarden:
T/T
Productoverzicht
WDZ-YJLHY23 is a medium-voltage, low-smoke, halogen-free steel-tape armored power cable with a rated voltage of 26/35kV. It uses a high-performance aluminum alloy compacted conductor instead of the traditional copper core and is independently developed for medium-voltage power transmission projects ...
Productbeschrijving
WDZ-YJLHY23 is a medium-voltage, low-smoke, halogen-free steel-tape armored power cable with a rated voltage of 26/35kV. It uses a high-performance aluminum alloy compacted conductor instead of the traditional copper core and is independently developed for medium-voltage power transmission projects in long-distance overhead transition sections, direct burial, and corrosive geological environments.
Complete Model Code Explanation
- WDZ:
- Low-smoke, halogen-free. The insulation layer, inner core, and outer sheath are all made of halogen-free flame-retardant polymers and do not contain halogen-containing raw materials such as PVC.
- YJLH:
- High-ductility aluminum alloy conductor. The optimized alloy composition formula provides superior creep resistance and tensile strength compared to ordinary pure aluminum conductors.
- Y:
- XLPE cross-linked polyethylene insulation.
- 23:
- Double-layer steel tape armor + PE outer sheath composite protection structure. A typical flat steel tape armor design, suitable for underground trench and direct burial installations.
Compared to traditional copper-core YJV23-35kV cables, its core differentiating features are: the use of aluminum alloy conductors, achieving a lightweight layout, lower overall raw material costs, and superior creep resistance; the WDZ all-LSZH structure meets the fire safety requirements of urban utility tunnels and densely laid cable channels. It is mainly used for main lines of centralized photovoltaic/wind farms, municipal and rural power grid upgrades, distribution trunk lines in coastal corrosive soil areas, and external medium-voltage incoming lines in chemical industrial parks. It features a standard three-core integral stranded structure, and single-core layouts can be customized according to special engineering designs.
2. Complete Technical Parameters and Layer Structure Specifications (Design Engineer Reference)
2.1 Core Electrical Performance Indicators
- Rated U0/U Operating Voltage: 26/35kV, matching 50Hz medium-voltage urban power distribution networks and primary power distribution systems of new energy booster stations;
- Long-term allowable continuous operating temperature of aluminum alloy conductor: 90℃ under full load;
- 5-second instantaneous short-circuit withstand limit temperature: 250℃;
- Factory routine power frequency withstand voltage test: 78kV/15min without insulation breakdown;
- Lightning impulse withstand test: Each batch passes the 200kV standard lightning impulse withstand test;
- Conductor conductivity: Utilizing an optimized AA8000 series aluminum alloy formula, the effective conductivity efficiency is close to that of traditional pure aluminum, significantly improving the resistance to creep deformation under long-term thermal cycling loads.
2.2 Conductor and Complete Specification Coverage
- Conductor Standards: AA8000 series aluminum alloy tightly stranded conductors conforming to IEC60228 and GB/T3956 special alloy specifications are used. Tight stranding reduces conductor gaps and improves heat dissipation efficiency.
- Conductor Cross-sectional Area Range: Standard stock sizes are 3×50mm²～3×630mm²; extra-large cross-sectional areas and non-standard single-core layouts can be customized according to the buyer's construction drawings.
- DC Resistance Control: The conductor's DC resistance at 20℃ is strictly controlled within the standard allowable range. Design engineers reasonably calculate the line voltage drop of long-distance overhead-to-ground transition circuits.
2.3 Layered Structure Technical Parameters
- Aluminum Alloy Conductor: High-toughness AA8000 alloy core, resistant to fatigue bending, preventing thermal expansion, creep, and sagging after long-term operation;
- High-Purity Cross-linked Polyethylene Insulation Layer: Uniformly thick extruded cross-linked polyethylene, possessing excellent resistance to partial discharge and electrical aging, serving as the core guarantee for 35kV medium-voltage insulation safety;
- Low-Smoke Halogen-Free Flame-Retardant Filler: Environmentally friendly flame-retardant filler wraps the cable, improving the overall flame-retardant performance of the bundled installation;
- Inner Buffer Layer: An extruded, halogen-free buffer layer that isolates the insulation layer from the steel tape armor layer, preventing mechanical scratching during installation;
- Double-Layer Steel Tape Armor (23 Structural Features): A double-layer armor structure with overlapping galvanized steel tape, resistant to compression, puncture by sharp stones, and rodent bites;
- Modified Corrosion-Resistant Polyethylene Outer Sheath: A specially formulated polyethylene sheath resistant to salt spray and chemical corrosion in soil, suitable for underground installation in coastal saline-alkali land, industrially polluted soil, and other similar environments.
2.4 Installation Environment Adaptability Parameters
- Minimum fixed installation ambient temperature ≥ 0℃;
- Minimum installation bending radius ≥ 18 times the outer diameter of the finished cable;
- Standard applicable installation altitude ≤ 3000m; For power grid projects in high-altitude mountainous areas with altitudes above 3000m, a low-pressure resistant insulation formula can be customized.
3. Core Product Comprehensive Performance and Differentiated Competitive Advantages
3.1 Six Core Functional Performances
- LSZH Low Smoke Halogen-Free Fireproof Safety Performance: Passes GB/T19666 WDZ Flame Retardant Vertical Burning Test, smoke density ≥70% under combustion conditions, no corrosive halogen acid gas release, suitable for dense laying in enclosed integrated pipe corridors, meeting fire protection acceptance standards;
- AA8000 Aluminum Alloy Creep-Resistant Core Wire Advantages: Optimized alloy composition effectively inhibits creep deformation of the conductor caused by long-term temperature alternation, reducing the later circuit failure maintenance rate compared with ordinary pure aluminum cables;
- Double-layer steel strip armored mechanical protection: The double-layer overlapping galvanized steel strip structure can withstand underground ground settlement and pressure, as well as accidental impacts from construction machinery, allowing for direct burial without additional steel pipe protection;
- Excellent resistance to geological corrosion: The salt spray-resistant PE outer sheath, combined with galvanized armor, can stably adapt to complex geological conditions such as coastal saline-alkali soil and acid-alkali contaminated soil in chemical industrial parks;
- Stable electrical performance of XLPE insulation: Low dielectric loss factor, small capacitance change under power grid load fluctuations, reducing power consumption in long-distance trunk line operation;
- Lightweight cost optimization characteristics: The aluminum alloy conductor is nearly 30% lighter than copper cable of the same specification, reducing raw material procurement costs and transportation expenses for project purchasers.
3.2 Unique advantages compared to traditional copper core YJV23 and ordinary pure aluminum YJLV23 cables
- Alloy core performance upgrade: Ordinary pure aluminum conductors are prone to creep and sagging after years of thermal expansion and contraction; YJLH aluminum alloy improves tensile strength and creep resistance, greatly extending the cable's service life;
- Compared to ordinary PVC-sheathed Type 23 cables, WDZ offers a fully halogen-free upgrade: Traditional YJLV23 uses halogen-containing PVC sheaths, which produce harmful corrosive fumes when burned; WDZ's all-LSZH formula complies with green power grid and pipeline corridor fire protection standards.
- Flexible customized production system: Supports small-batch trial orders, non-standard cross-section and single-core customized production, as well as mixed-package consolidation shipments to reduce buyer inventory backlog and capital occupation.
- Full-process online quality monitoring: The fully automated continuous insulation extrusion production line is equipped with online partial discharge and armor layer thickness detection equipment. Each batch of finished products undergoes sampling tests for flame retardancy and corrosion resistance before leaving the factory.
4. Detailed Application Industries + On-site Engineering Matching and Construction Technical Specifications
4.1 Detailed Application Scenarios Classification
- Large-scale centralized photovoltaic and onshore wind farm projects: 35kV outgoing trunk lines of wind/photovoltaic booster stations, direct burial layout of on-site collection lines, complex geological conditions and rodent-prone environments in remote wilderness areas;
- Suburban power grid upgrade and renovation project: Upgrading of county-level integrated urban and rural 35kV distribution trunk lines; direct burial of power lines along roadsides in suburban saline-alkali soil; government bidding for urban utility tunnel sections mandates low-smoke fire prevention.
- Coastal ports and near-shore supporting industrial parks: Medium-voltage cables for auxiliary power lines to ports; 35kV trunk lines outside coastal chemical industrial parks; laying in high-salt-spray and saline-alkali soil corrosive environments.
- Urban underground integrated utility tunnel construction: Medium-voltage power trunk lines inside municipal integrated utility tunnels; laying in enclosed spaces; strict adherence to low-smoke, low-smoke, and high-smoke fire safety standards is required.
- Resource-based mining industrial park renovation: Medium-voltage power cables for incoming lines to inland mineral processing parks; direct burial in polluted industrial soil.
4.2 On-site engineer matching of key technical guidance
- Direct burial in ordinary soil: Generally, inland non-corrosive soil; laying depth ≥1.0m; double-layer steel strip armor eliminates auxiliary steel pipe protection to save on construction costs.
- Coastal saline-alkali geological laying: For port and coastal projects, customized versions of reinforced salt spray resistant outer sheaths are selected, and anti-corrosion geotextiles are added during the burial construction process to further mitigate the electrochemical corrosion of the sheath;
- Dense laying in enclosed utility tunnels: All laying within utility tunnels must use WDZ LSZH modified cables to replace traditional halogen-containing cables, ensuring successful acceptance by fire departments;
- Long-distance renewable energy field laying: For remote, wilderness wind and solar power stations/photovoltaic power stations, aluminum alloy core wires are preferred to reduce overall project procurement costs and the difficulty of transporting heavy copper cables on-site.
5. Key Procurement Inspection Standards for EPC General Contractors, Power Design Institutes, and Global Bulk Importers
Multi-dimensional core verification checklist for power EPC procurement managers, power design institute procurement engineers, and overseas regional power distributors:
- Raw material qualification review: Suppliers are required to provide third-party testing reports for AA8000 aluminum alloy ingots and LSZH raw materials before signing bulk contracts, prohibiting the mixing of recycled inferior raw materials into finished cables;
- Pre-shipment Third-Party Sampling Agreement: A random sampling inspection clause is included in the sales contract, allowing the buyer to designate a locally authorized electrical testing agency to inspect flame retardancy, armor mechanical properties, and partial discharge index before container loading.
- Pre-order Parameter Optimization Consultation: Submit the project's geological survey report and power distribution design drawings to our technical team. Our medium-voltage engineers will optimize cross-section selection based on laying distance and soil conditions, avoiding on-site rework due to incorrect procurement specifications.
- Delivery Schedule: Standard mainstream specifications are readily available from the factory, with fast delivery within 7-10 working days. For non-standard customized specifications, a fixed production cycle is confirmed during the pre-negotiation stage to align with the overall construction schedule of the power project.
- Export Packaging Optimization: Exported medium-voltage cables utilize thickened fumigated wooden trays + moisture-proof sealed plastic packaging. Our logistics team optimizes container loading layout to improve space utilization and reduce unit sea freight costs for bulk importers.
6. Compliant with domestic and international standards + full certifications, offering a significant competitive advantage.
All WDZ-YJLHY23 series products have passed multiple authoritative professional inspections and come with complete English certification documents, suitable for overseas power bidding and destination customs clearance.
- Domestic Standards: GB/T12706 National Standard for Medium Voltage Power Cables, GB/T19666 Specification for Flame-Retardant Low-Smoke Halogen-Free Cables, GB/T2952 Manufacturing Standard for Armored Cables;
- International Standards: Manufactured according to the core clauses of IEC60840, IEC60332, and IEC61034, conforming to mainstream electrical access standards in emerging markets of Southeast Asia, the Middle East, Central Asia, and Africa;
- Complete Certifications: CCC mandatory product certification, fire-resistant product type approval certificate, CNAS accredited laboratory test report, ISO9001 quality management system certification, and ISO14001 environmental management system certification, as well as a complete set of English certification documents for bidding;
- Customs Clearance Assistance Services: Assisting the buyer in issuing certificates of origin and supporting customs clearance documents to expedite customs clearance at the port of destination.
7. Three Independent Overseas Project Application Cases
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Case 1: Southeast Asia Large-Scale Ground-Mounted Photovoltaic Power Plant Construction Project (Myanmar, 2025 New Energy EPC Tender)
Project Overview: A 150MW centralized photovoltaic power plant 35kV transmission line project, with a total procurement of 36km of WDZ-YJLHY23 3×300mm² cable. All cables were laid directly underground in remote suburban areas with soft soil and high rodent activity.
Rationale: Construction in remote areas lacks centralized cable trench protection; double-layer steel tape armor prevents punctures from underground rocks and animal bites; aluminum alloy core wire effectively controls the overall investment cost of large-capacity photovoltaic projects; some pipe corridors inside the booster station require WDZ LSZH fire-resistant cables to meet local fire regulations. Our all-English certification helped the winning EPC contractor pass government technical review, and all goods were delivered within 25 working days as stipulated in the contract.
-
Case Study 2: Power Supply Project for a Coastal Port Industrial Park in the Middle East (Bahrain, 2024 Municipal EPC General Contracting)
Project Overview: This project involves the installation of a 35kV incoming transformer for a coastal integrated industrial park. The total order quantity is 29km of mixed-specification WDZ-YJLHY23 cables. The construction area is located in a coastal region with high salt spray and saline-alkali soil. Some cables are installed within a municipal utility tunnel.
Selection Rationale: The harsh coastal environment with its cold and salt spray necessitates a custom-designed corrosion-resistant outer sheath for the YJLHY23 cables; the WDZ low-smoke halogen-free design meets the fire safety requirements of the enclosed utility tunnel tender; and the aluminum alloy material reduces the bulk procurement cost for large-scale government infrastructure projects. Our technical department provided a free English on-site construction specification manual, and the products successfully passed the local electrical commodity inspection in Bahrain without additional testing fees.
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Case 3: East Africa County-Level Rural Power Grid Upgrade Project (Uganda, 2025 National Electricity Authority Government Tender)
Project Overview: Upgrading of the rural medium-voltage distribution network in three counties, with a total procurement of 47 kilometers of multi-specification WDZ-YJLHY23 cables. Most cables were directly buried along rural dirt roads, with some laid in newly built municipal utility tunnels in urban areas.
Rationale for Selection: Government power projects strictly control the total construction budget; aluminum alloy core wire reduces overall procurement costs compared to copper cable; WDZ flame-retardant LSZH formula meets the fire protection requirements of urban utility tunnels; double-layer steel strip armor adapts to the complex geological conditions underground in rural areas. After final project acceptance, the client signed an annual framework cooperation agreement, and subsequent power grid upgrade procurement will be carried out in phases across the country.
8. Exclusive Cooperation Benefits for Engineering Companies and Long-Term Strategic Purchasers
- A Professional Dedicated Medium-Voltage Technical Team: Equipped with senior electrical engineers and geological application technicians specializing in medium-voltage power cables, providing free pre-order cross-section matching consultation services based on power design drawings and project geological data, and offering remote online troubleshooting support for on-site engineering teams;
- Full-Process Traceable Quality Management: Each roll of finished cable is accompanied by a unique batch tracking code, covering raw material inspection, online production monitoring, and finished product sampling inspection, facilitating full-cycle quality traceability during project completion and acceptance;
- Diversified International Trade Cooperation Models: Supports multiple trade settlement methods including FOB, CIF, and CFR, offering a dual cooperation plan of small trial orders and annual long-term framework contracts. Long-term contract clients enjoy tiered bulk purchase discount policies.
- Stable inventory and global logistics deployment: Regularly updates general specifications and factory spot inventory in real time. Partners with multiple top international freight forwarders to develop cost-effective customized transportation solutions, avoiding delivery delays caused by port congestion and seasonal logistics fluctuations.
- Flexible backup capacity: Reserves a portion of medium-voltage production line capacity for long-term strategic partners to quickly respond to sudden emergency supplementary needs in the later stages of power engineering construction projects.
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