WDZBN-YJY XLPE LSZH Fire Resistant Cable For Critical Circuits

WDZBN-YJY is a low-voltage cross-linked polyethylene (XLPE) insulated power cable designed for projects requiring low-smoke, halogen-free performance and circuit integrity under fire conditions. It is typically used in critical power supply lines that must remain operational for a specific period after a fire to support life safety systems and emergency functions. In many procurement processes, WDZ indicates a low-smoke, halogen-free design, B indicates a flame retardant rating, and N is widely used to indicate fire resistance. WDZBN-YJY is commonly used in public buildings, transportation infrastructure, high-density locations, and industrial sites where emergency systems cannot be de-energized.

For cross-border buyers and tender procurement, WDZBN-YJY is a high-quality, compliant cable suitable for emergency power supplies, fire pumps, smoke extraction systems, emergency lighting, and critical control circuits.

Typical low-voltage rated voltage: 0.6/1kV

Please ensure that the rated voltage, fire resistance test duration, and acceptance tests conform to applicable standards in the Bill of Materials (BOQ).

• 1C: Single-core feeder and emergency power supply riser
• 2C: Single-phase emergency circuit
• 3C: Three-phase circuit without neutral (depending on the project)
• 4C: Three-phase circuit with neutral (common)
• 5C: Three-phase circuit with neutral and protective electrical wiring (common in many building designs)
• 3+1, 3+2: Widely used in feeder designs in some markets

• 1.5, 2.5, 4, 6, 10, 16, 25, 35, 50, 70, 95, 120, 150, 185, 240

• 2C x 1.5, 2C x 2.5, 2C x 4
• 3C x 2.5, 3C x 4, 3C x 6, 3C x 10
• 4C x 6, 4C x 10, 4C x 16, 4C x 25, 4C x 35
• 5C x 6, 5C x 10, 5C x 16, 5C x 25
• 1C x 70, 1C x 95, 1C x 120, 1C x 150, 1C x 185

Availability depends on the required fire-resistant structure and standards. Please confirm the specific structure to ensure compliance.

• Fire-resistant circuit integrity for critical loads
• Designed to maintain power supply for specific periods during a fire, supporting emergency systems that must continue operating during evacuation.
• Low smoke and halogen-free performance for a safer evacuation environment
• Low smoke and halogen-free compounds are typically specified to reduce dense smoke and corrosive gases, thereby improving visibility and reducing secondary damage to equipment.
• Flame retardant rating for cable safety
• Flame-retardant design helps reduce the spread of flames along cable lines, thus ensuring the safety of shafts, corridors, and tray systems.
• XLPE Insulation Ensures Stable Low-Voltage Power Distribution
• XLPE insulation provides reliable electrical and thermal performance for building power distribution circuits under continuous load.
• Suitable for Public Buildings and Transportation Projects
• Commonly used in airports, subways, tunnels, stations, hospitals, shopping malls, data centers, and other densely populated areas with stringent fire safety requirements.

• Emergency lighting and evacuation systems
• Power supply for fire pumps and fire-fighting equipment
• Smoke exhaust and booster fans
• Emergency elevators and critical building equipment
• Control circuits for fire alarms and life safety equipment (if specified)
• Critical feeders in transportation hubs, tunnels, and public facilities

• Conductor Preparation and Stranding
• Copper conductors are drawn and stranded (solid conductors may be used for smaller sizes if specified). Conductor geometry is controlled to ensure the stability of the fire-resistant layer.
• Fire-Resistant Layer Application (Structure depends on standard)
• Fire-resistant designs typically employ a dedicated fire-resistant layer or mica base layer to maintain insulation integrity during fire exposure.
• XLPE Insulation Extrusion and Crosslinking
• XLPE insulation is used to ensure stable electrical and thermal properties for low-voltage applications.
• Core Identification and Wiring
• Insulated cores are identified and wired according to the specified number of cores. Filler and binding tape help maintain shape consistency and stability.
• Low Smoke Halogen-Free Sheath System and Flame Retardant
• A low smoke halogen-free sheath compound is used, and the system is designed to meet flame retardant and smoke/toxicity performance requirements.
• Routine Testing and Compliance Controls
• Typical factory checks include conductor resistance, insulation thickness, spark testing, voltage testing, and fire resistance verification according to required standards and classifications.

• Conductor: Copper
• Fire-resistant Layer: Mica or equivalent fire-resistant material (depending on specific specifications)
• Insulation Layer: Cross-linked polyethylene (XLPE)
• Outer Sheath: Low-smoke halogen-free (LSZH) composite system, flame-retardant (depending on specific specifications)
• Cable Type: Low-voltage power cable, suitable for fixed installation in cable trays, conduits, risers, and protective circuits

Choose WDZBN-YJY ensures emergency and life safety. According to design or regulatory requirements, circuits must possess fire resistance and low-smoke halogen-free (LSZH) performance.

Please confirm the specific fire resistance rating and required fire resistance time in the Bill of Quantities (BOQ).

Select the appropriate number and size of cores based on load current, line length, grouping method, and permissible voltage drop.

For underground lines or lines with high mechanical risk, please specify whether armor protection is required. For outdoor lines, please specify UV radiation and environmental requirements.

It is used in critical low-voltage circuits that must remain operational during a fire, such as emergency lighting, fire pumps, smoke extraction systems, and other life-saving power supplies.

In many procurement practices, "N" indicates a fire-resistant cable design intended to maintain circuit integrity for a specific period during a fire and to meet specified standards.

LSZH sheathing systems are typically used to reduce smoke concentration and corrosive gases during a fire, thus contributing to safer evacuation and reducing equipment damage.

Yes. It is typically installed in cable trays, risers, shafts, and protective conduits for emergency power distribution in buildings.

Fire resistance requirements and duration, conductor configuration, cross-section, total length, required standards, installation route, packaging preferences, and destination.

Yes. We can provide packaging markings, batch traceability information, routine test records, and project documentation according to procurement requirements.

JinHong has a wide range of cable and conductor products for you to choose from. We will provide caring services and professional project solutions for everyone who needs them.

JinHong cable products are manufactured according to GB, IEC, BS, NFC, ASTM, DIN, and other international standards. Our technical team can customize cable products that meet your requirements according to your needs.

JinHong provides free professional consulting services to provide you with one-stop project solution services and rapid product delivery solutions.

While we at JinHong provide high-quality cables, we also provide good delivery solutions. While ensuring the safe delivery of products, we provide the best packaging and transportation solutions, greatly reducing customers’ transportation costs.

JinHong cable packaging is provided in the form of wooden reels, corrugated boxes, and coils. The cable ends are sealed with BOPP self-adhesive tape and a non-hygroscopic sealing cap to protect the cable ends from moisture. We can print the required marks on the outside of the barrel with waterproof material according to customer requirements.