LSZH Fire Resistant Flame Retardant Cable Operating in Harsh Conditions Emergency Power Supply

In fire or emergency situations, interruptions in emergency power and toxic fumes from cables can lead to irreversible disasters. WDZN-YJY halogen-free, low-smoke, fire-resistant, and flame-retardant cables are the ultimate savior for project managers, industrial engineers, and facility operators worldwide. Featuring high-purity copper conductors, XLPE insulation, a mica tape flame-retardant layer, and a halogen-free polyolefin sheath, this cable can stably supply power for over 100 minutes at 840°C with zero toxic gas release and instantly prevents the spread of flames. WDZN-YJY cables can operate in extreme temperatures ranging from -40°C (Northern Europe) to 60°C (Middle East) and are certified by the EU (CE/RoHS 3.0), North America (UL/cUL), Australia (SAA), and the Middle East and North Africa (SASO). They are a core component of reliable emergency power systems for industrial and commercial projects worldwide.

WDZN-YJY is a high-quality low-voltage (0.6/1kV) triple-protected power cable designed for critical emergency power transmission (fire pumps, emergency lighting, life support equipment), where fire safety, environmental friendliness, and uninterrupted power supply are paramount. Its advanced multi-layer structure ensures comprehensive reliability: Class 2 high-purity stranded copper conductors (low resistance, stable transmission), cross-linked polyethylene (XLPE) insulation (anti-aging, high-temperature resistant), mica tape fireproof layer (fireproof and non-combustible core wire), halogen-free low-smoke filler layer (moisture-proof, environmentally friendly), and halogen-free polyolefin outer sheath (Class B flame retardant, corrosion-resistant, UV resistant). "WDZN" = Halogen-free (W) + Low-smoke (DZ) + Flame Retardant (Z) + Fire Resistant (N); "YJY" = Cross-linked polyethylene (XLPE) insulation and halogen-free polyolefin sheath. Its unique feature is that the integrated mica tape fireproof layer combines flame retardant and halogen-free properties, achieving the functions of "preventing fire spread + maintaining power supply + no toxic smoke" in a single cable, eliminating the need for separate emergency cables and flame-retardant cables.

• Triple Safety Protection: Fire-resistant (100 minutes at 840℃, compliant with IEC 60331 standard) + Class B flame retardant (compliant with IEC 60332-3-11 standard) + Halogen-free and low-smoke (compliant with RoHS 3.0/REACH standards). No toxic gas release, prevents flame spread, and maintains emergency power – crucial for enclosed spaces such as hospitals and data centers, easily passing stringent global testing.
• Ultra-Stable Emergency Power Transmission: Utilizes a high-insulation mica tape fireproof layer, ensuring continuous power supply for over 100 minutes under an open flame at 840℃. Ensures normal operation of fire pumps, emergency lighting, and life support equipment during fires, complying with EU EN 50200 and US NFPA 110 standards.
• All-Climate and Harsh Environment Adaptability: Employs a halogen-free polyolefin sheath with added antifreeze, UV protection, salt spray resistance, and oil repellency additives, adaptable to a temperature range of -40℃ to 60℃. It can withstand the blizzards of Northern Europe, the desert heat of the Middle East, the monsoons of Southeast Asia, and the salt fog of the Australian coast without the need for additional protection, thus reducing maintenance costs by 30%.
• Smart Emergency System Compatibility: Its low capacitance and low impedance make it fully compatible with building management systems (BMS) and emergency power monitoring platforms. XLPE insulation minimizes power loss (≤2.2% at 16mm² gauge), making it suitable for long-distance emergency power lines (up to 650 meters), ideal for smart city emergency infrastructure.
• Global Multiple Certifications, Cost-Effective: CE/RoHS 3.0 (EU), UL/cUL (North America 600V), SAA (Australia/New Zealand), SASO (Middle East and North Africa), and IEC 60502 (Global). A single cable can meet the needs of multiple emergency project markets, avoiding the costs of duplicate certifications. The flexible structure reduces installation labor by 33% compared to rigid cables; the elimination of redundant cables reduces total project costs by 24%.

Note: All specifications are in stock (fast shipping within 3 days). Bulk orders can customize the number of cores (up to 5+1 cores) and cross-sectional dimensions (1.5~240mm²), and triple safety certification is guaranteed.

WDZN-YJY cables are designed to meet the emergency power needs of industrial and commercial projects worldwide, covering critical scenarios with extremely high compliance requirements:

• EU Market: Emergency power systems for smart commercial buildings, power supplies for hospital life support equipment, airport emergency lighting, and fire pump circuits in subway stations (compliant with CE/RoHS 3.0 standards and EN 50200 fire safety regulations)
• North American Market: Emergency power circuits for medical institutions, fire sprinkler systems in industrial plants, backup power supplies for high-rise residential buildings, and emergency UPS lines for data centers (UL/cUL certified, compliant with NFPA 70/110 standards)
• Australia and New Zealand: Emergency power supplies for coastal commercial complexes, power supplies for mine rescue equipment, and emergency lighting for educational institutions (SAAA certified, resistant to inland high temperatures and coastal salt spray)
• Middle East and North Africa Market: Emergency rescue power supplies for oil and gas fields, emergency systems for smart cities in deserts, and backup power supplies for luxury hotels (SASO certified) Certified (Heat-resistant, dust storm-resistant, oil-resistant)
• Global critical application emergency scenarios: Chemical plant safety interlock emergency power supply, food processing plant fire emergency circuit, water treatment plant emergency pump power supply, nuclear power plant auxiliary emergency system (triple safety, reliable operation in high-risk environments)

• What is the difference between WDZN-YJY and WDZB-YJY?

  WDZN-YJY has triple protection (halogen-free low smoke + flame retardant + fire resistant, maintaining power supply even in a fire); WDZB-YJY only has halogen-free low smoke + flame retardant functions (not fire resistant). WDZN-YJY is used for emergency power circuits, while WDZB-YJY is used for non-emergency critical power supplies—selected based on whether uninterrupted power supply is required during a fire.

• What is the function of the mica tape fire-resistant layer in WDZN-YJY?

  The mica tape layer is the core fire-resistant component, which will not burn or melt at a high temperature of 840℃. It forms a heat barrier, protecting the conductor and insulation layer, ensuring that the cable maintains power transmission for more than 100 minutes in a fire—crucial for ensuring the operation of emergency equipment.

• Does WDZN-YJY comply with Australian AS/NZS 3013 and SAA standards?

  Fully compliant. Our WDZN-YJY (SAA certified version) fully complies with AS/NZS 3013 standards for fire resistance, flame retardancy, and environmental safety. We provide official SAA certification and fire test reports for all orders to ensure smooth project inspections in Australia.

• What is the minimum bending radius for installation?

  Multi-core WDZN-YJY: ≥15 times the cable outer diameter; Single-core (customized): ≥20 times the cable outer diameter. The flexible version (WDZN-YJYR) has a smaller radius (≥10 * outer diameter), making it suitable for narrow spaces such as wall pipes and machine gaps.

• What is the minimum order quantity (MOQ) for custom specifications?

  The minimum order quantity/section for custom core material is 800 meters per specification. For urgent small-batch custom orders (500-800 meters), we offer priority production service, guaranteeing delivery within 14 business days for a small surcharge.

• Can large-volume orders be expedited to meet urgent project needs?

  Yes. The delivery time for standard large-volume orders is 12-18 business days; urgent project orders can be expedited to 7-10 days through 24/7 production. Urgent samples are shipped via DHL/FedEx, while large-volume orders are shipped via air/sea freight, ensuring on-time delivery worldwide.