XLPE Power Cable | Non-armoured General Distribution Cable for Green Civil & Industrial EPC Projects

WDZ-YJY is a widely used unarmored low-voltage fixed-lay power cable with a rated voltage of 0.6/1kV. It features a fully low-smoke, halogen-free, flame-retardant structure and is specifically designed for conventional main power distribution circuits in green buildings, municipal auxiliary facilities, and general industrial plants. As a general-purpose trunk cable, it differs from the fire-resistant WDZN-YJY and high-flame-retardant WDZB-YJY products.

WDZ-YJY is a general-purpose low-smoke halogen-free (LSZH) flame-retardant cable, designed for everyday power supply in ordinary fire-resistant buildings. It achieves smoke suppression and non-toxic gas release during open flame combustion without requiring a special fire-resistant mica sheath, and is more cost-effective than fire-resistant series cables. It offers various structural types including single-core, 3/4/5-core, and asymmetric composite core (3+1, 3+2, 4+1), flexibly matching diverse civil and industrial power distribution designs.

• Rated Operating Voltage U0/U: 0.6/1kV, suitable for 50Hz AC conventional low-voltage power distribution networks;
• Compact copper conductor permissible long-term continuous operating temperature: 90℃ under rated full load;
• Upper limit temperature withstand for instantaneous short circuit duration within 5 seconds: 250℃;
• Factory routine power frequency withstand voltage test: 3.5kV power frequency withstand voltage for 5 minutes without insulation breakdown;
• XLPE insulation characteristics: Low dielectric loss coefficient, stable insulation resistance under changes in temperature and ambient humidity, effectively reducing energy consumption of short- and medium-distance transmission lines.

• Conductor Standards: Class 2 tightly stranded annealed copper conductors conforming to IEC60228 and GB/T3956 standards. Tight stranding reduces internal air gaps and optimizes heat dissipation efficiency.
• Standard Cross-Section Inventory Range: 1.5mm²～300mm² standard finished products in stock; custom sizes of 400～630mm² and non-standard special core material combinations can be customized according to customer construction drawings.
• DC Resistance Control: The conductor's DC resistance at 20℃ is strictly controlled below the upper limit specified by international and domestic standards to stabilize the terminal voltage drop of the power distribution circuit.

• Tightly Tightly Stranded Copper Conductor: The tightly stranded conductor has a smooth outer surface, avoiding localized electric field concentration and partial discharge hazards.
• High-Purity Cross-linked Polyethylene Insulation Layer: Utilizes a continuous extrusion molding process, resulting in uniform wall thickness and excellent resistance to electrical aging and insulation puncture resistance under long-term load operation.
• Halogen-Free Flame-Retardant Filler: Environmentally friendly low-smoke halogen-free (LSZH) filler fills the gaps between the insulation cores, making the cable profile more regular and improving the overall flame-retardant performance when multi-core cables are laid in concentrated locations.
• Optimized Modified Low-Smoke Halogen-Free (LSZH) Outer Sheath: Added antioxidant and moisture-proof auxiliary components improve adaptability to indoor humid environments and environments with slight volatile gases.

• Minimum ambient temperature for fixed installation: ≥0℃;
• Minimum bending radius during construction: ≥12 times the outer diameter of the finished cable;
• Suitable for general installation altitudes ≤3000m. For high-altitude industrial park projects above 3000m, a special high-altitude formula can be customized.

• WDZ-grade Low Smoke Halogen-Free Flame Retardant Performance: Passes GB/T19666 and IEC60332-3 basic flame retardant tests, with a smoke transmittance of over 65% during combustion. It does not produce corrosive halogen acid gases during combustion, meeting the basic fire safety evacuation requirements of enclosed basements, cable wells, and centralized cable trenches;
• Stable XLPE Insulation Electrical Reliability: Minimal capacitance change under grid load fluctuations, ensuring stable long-term uninterrupted operation of conventional power distribution circuits;
• Lightweight Unarmored Structure Advantages: No steel/aluminum armor layer, smaller overall outer diameter, and lighter unit weight, saving contractors procurement costs and installation space for cable trays and trunking;
• Excellent indoor anti-aging performance: The modified low-smoke halogen-free (LSZH) outer sheath resists indoor humidity, air oxidation, and trace industrial volatile gases, achieving a rated design service life of up to 25 years under standard indoor fixed installation conditions.
• Economical and efficient formula matching: While ensuring WDZ flame retardancy, the raw material ratio is optimized, achieving a balance between performance and project procurement costs compared to high-end WDZB/WDZN series cables.

• Comprehensive halogen-free environmental upgrade, superior to traditional PVC YJV: Traditional PVC sheathed cables release large amounts of toxic and corrosive fumes when burned; WDZ-YJY's all-LSZH material complies with green building certifications and local fire codes in most countries.
• Compared to high-specification WDZB/WDZN LSZH cables, it has a reasonable cost advantage: No need for high-grade binding flame-retardant fillers and fire-resistant mica wrapping, suitable for general engineering projects without extremely high fire resistance requirements, avoiding unnecessary project cost waste.
• Flexible Customized Production System: Supports small-batch trial orders, short-term staggered delivery, and customized irregular core material layouts, reducing buyer inventory backlog and capital occupation;
• Strict Online Production Quality Control: The fully automated continuous extrusion production line is equipped with a real-time insulation layer thickness detection device. Smoke density and flame retardancy sampling tests are conducted on each batch of finished products before warehousing to ensure batch consistency.

• General Commercial and Mid-range Residential Building Construction: Main power lines for general shopping malls, mid-to-high-rise office buildings, indoor main power lines for general residential communities, conventional power distribution wiring in basements, and priority specifications for non-Level 1 fire-resistant civil engineering;
• General Manufacturing Park Renovation: Indoor power distribution lines for light industrial processing plants, food packaging workshops, and logistics warehouses; centralized laying of indoor cable trays under general environmental conditions;
• Municipal Auxiliary Public Facilities: Power supply for urban parks, community service centers, roadside public infrastructure power lines, and cable models specified in regular municipal government tenders;
• Schools and General Public Buildings: Main wiring in school teaching buildings and community hospital outpatient buildings; public construction projects requiring compliance with Low Smoke Halogen-Free (LSZH) basic fire protection standards;
• New Energy Supporting Auxiliary Buildings: Indoor power distribution lines in photovoltaic power station living areas and wind farm site office buildings; auxiliary non-critical load fixed wiring.

• Enclosed Basements and Cable Shaft Laying: WDZ-YJY type cables, not PVC cables, should be uniformly selected for enclosed spaces in general non-Class I fire-resistant buildings to pass routine fire inspections;
• Dense Multiple Cable Laying in the Same Cable Tray: When dozens of distribution cables are densely laid in the same cable tray, standard WDZ type cables should be given priority to limit the spread of fire along the cable;
• Construction in Damp Semi-Basement Spaces: For semi-basements and underground storage rooms, moisture-proof optimized sheathed custom versions can be selected to extend service life.
• For government-tendered projects with controllable costs: For general municipal infrastructure projects, if there are no mandatory Class B flame retardant or fire-resistant clauses, WDZ-YJY cables are selected to balance fire safety indicators and the total project budget.

Key verification points from multiple perspectives, including EPC procurement managers, engineering construction companies, and overseas regional electrical distributors:

• Raw Material Qualification Confirmation: Suppliers are required to provide third-party inspection reports on low-smoke halogen-free compounds and copper conductors before signing bulk contracts, confirming that no recycled or inferior raw materials are mixed into the finished cables;
• Pre-shipment Third-Party Testing Agreement: Random sampling inspection clauses are included in the sales contract, allowing the buyer to designate a local authoritative testing agency to inspect smoke density and flame retardant performance before container loading;
• Pre-purchase Technical Parameter Confirmation: The project's electrical schematic diagram and laying environment description are submitted to our technical team. Our professional low-voltage cable engineers will optimize the core quantity and cross-section selection to avoid on-site rework costs due to incorrect procurement specifications.
• Delivery Schedule: For standard mainstream specifications, we maintain factory stock and ship quickly within 4-7 working days. For non-standard customized specifications, a fixed production cycle is confirmed during the pre-order negotiation stage to coordinate with the overall project construction schedule.
• Export Packaging Optimization: Export-specification cables are packaged in moisture-proof plastic reels and fumigated wooden pallets. The logistics team optimizes container stacking layout to improve space utilization and reduce unit ocean freight costs for bulk purchasers.

WDZ-YJY series products have all passed authoritative testing and can provide complete English certification documents for overseas bidding and destination customs clearance:

• Domestic Standards: GB/T12706 Low-voltage Power Cable Specification, GB/T19666 National Standard for Flame-retardant Low-smoke Halogen-free Cables;
• International Reference Standards: Manufactured according to the core clauses of IEC60502, IEC60332, and IEC61034, conforming to the mainstream electrical access standards of importing countries in Southeast Asia, the Middle East, and Africa.
• Complete Certifications: CCC mandatory certification, fire protection product inspection certificate, CNAS laboratory test report, ISO9001 quality management system certification, and ISO14001 environmental management system certification; a complete set of English-language qualification documents required for bidding.
• Customs Clearance Assistance: Assisting the buyer in issuing certificates of origin and supporting customs declaration documents, shortening the customs clearance cycle at the destination port.

Project Overview: Overall power distribution project for a medium-sized high-rise residential community, with a total procurement volume of 32km of mixed-specification WDZ-YJY cables (3x95+1x50, 4x70+1x35). Most cables are laid in the residential vertical cable shafts and underground conventional distribution rooms.

Rationale for Selection: This community is a general civil building, meeting the basic fire protection requirements for low-smoke halogen-free (LSZH) as stipulated by the local fire department. The WDZ-YJY design balances fire safety with overall project investment costs; its lightweight, non-armored structure simplifies indoor cable tray installation and shortens on-site installation time. Our all-English certifications help the winning EPC contractor pass municipal technical audits, and all goods are delivered within 19 working days as stipulated in the contract.

Project Overview: A comprehensive indoor power grid upgrade project for a consumer goods processing park, with a total order of 28 kilometers of multi-specification WDZ-YJY cables. The cables were concealed along cable trays in the indoor workshops and auxiliary office buildings.

Selection Rationale: The production workshop is a typical light industrial environment with no highly corrosive gases or requirements for extremely high fire resistance. WDZ-YJY cables, with their essentially halogen-free flame-retardant properties, meet local factory safety regulations and effectively control bulk procurement costs. Our technical team provided a free English cabling installation guide, and the products successfully passed local commodity inspection without additional testing fees.

Project Overview: Auxiliary power upgrade project for a city center municipal ecological park, with a total procurement of 39 kilometers of WDZ-YJY series cables of various specifications. The cables will be laid in cable trenches within the park and in indoor conduits of public service buildings.

Rationale for Selection: The government municipal project implements green building standards, prohibiting the use of halogenated PVC cables in public areas; the low-smoke, halogen-free characteristics of the WDZ-YJY series meet local municipal engineering acceptance standards, and the unit price is reasonable, complying with government budget control requirements. After project acceptance, the client signed a framework cooperation agreement for subsequent procurement for the expansion of the city-level park.

• Professional Dedicated Technical Support Team: Equipped with low-voltage design engineers, providing free pre-order specification matching consultation based on project construction drawings, and offering remote online troubleshooting services to on-site construction teams;
• Full-Process Traceable Quality Management System: Each roll of finished cable is affixed with a unique batch tracking code, covering raw material incoming inspection, online production monitoring, and finished product sampling inspection, facilitating full-cycle quality traceability during final project acceptance;
• Diverse International Trade Cooperation Terms: Supports multiple settlement methods including FOB/CIF/CFR, with a dual cooperation model of small trial orders + annual long-term framework contracts. Long-term partners can enjoy tiered bulk purchase discounts;
• Stable Inventory and Global Logistics Coordination: Maintains real-time stock of standard specifications at the factory and collaborates with multiple international freight forwarders to develop cost-effective transportation solutions, avoiding delivery delays caused by port congestion;
• Flexible Capacity Reserved: Reserves some production line capacity for long-term strategic partners to quickly respond to emergency replenishment needs during the later stages of project construction.