Copper Core Fire Survival Non-sheathed Armoured Cable for Fire-rated Emergency Power Engineering

NH-YJV 0.6/1kV is a fire-resistant low-voltage power cable, using cross-linked polyethylene (XLPE) insulation and a polyvinyl chloride (PVC) outer sheath, with a rated operating voltage of 0.6/1kV.

NH = Fire resistance (maintains continuous power supply under specified flame combustion conditions); YJV = XLPE insulation + PVC outer sheath structure, without steel tape armor.

Core Differentiation: Utilizing cross-linked polyethylene instead of the traditional PVC insulation of NH-VV, it balances high-temperature resistance and fire resistance, making it the preferred design solution for high-standard fire emergency circuits in mid-to-high-end buildings, new energy, and industrial projects.

Core Positioning: Mandatory wiring for power circuits of fire pumps, emergency lighting, and fire-fighting linkage equipment, widely used in domestic and international engineering tender documents.

• Standard Configuration: Category 2 tightly stranded electrolytic copper (Cu≥99.97%, conforming to IEC60228 standard); Category 1 solid copper can be customized upon request.
• Core Wire Type: 1 core/2 core/3 core/4 core/5 core/3+1 core/3+2 core composite multi-core
• Cross-sectional Area Range: 1.5mm²～300mm² standard stock; 400mm²～630mm² extra-large cross-sectional area can be customized.
• Control Standard: The finished product's DC resistance is strictly lower than the upper limit specified in GB/T to reduce long-term line losses.

• Insulation Material: Heat-resistant cross-linked polyethylene (XLPE), long-term allowable operating temperature: 90℃; short-circuit instantaneous withstand temperature up to 250℃
• Inner Fire-resistant Composite Layer: Inorganic fire-resistant material is wrapped between the conductor and the cross-linked polyethylene (XLPE) insulation layer, providing core protection for fire resistance.
• Outer Sheath: Weather-resistant modified polyvinyl chloride (PVC), applicable ambient temperature range: -35℃～+70℃, anti-aging, moisture-proof.

• Rated Voltage: U0/U=0.6/1kV
• Factory Withstand Voltage Test: 3.5kV/5min No Breakdown
• Fire Resistance Rating: NH-A/NH-B, compliant with GB/T19666 standard, selectable according to project fire protection design level

Under standard fire thermal cycling tests, the NH-rated design ensures continuous power supply for 90-180 minutes in an open flame, guaranteeing uninterrupted power supply to fire emergency equipment; meets the mandatory requirements of global mainstream building fire protection codes for critical safety circuits.

XLPE insulation performance is superior to NH-VV grade PVC insulation; low dielectric loss, no thermal softening or insulation flow under long-term high-load heat accumulation, suitable for high-heat-dissipation environments in engine rooms with densely bundled cables.

Without steel tape armor, it is lighter per unit weight than armored fire-resistant cables; its smaller bending radius facilitates installation in pre-buried conduits, concealed installation in walls, and high-rise vertical shafts, shortening on-site construction time.

The compact extruded outer sheath and seamless fire-resistant inner sheath effectively prevent condensation and moisture intrusion from underground trenches; suitable for high-humidity environments such as basements and semi-underground cable trenches.

Antioxidants and UV-resistant additives are added to the insulation and sheath raw materials; the designed service life is ≥35 years under standard installation conditions, reducing the project owner's investment in subsequent line renovations.

Core power supply lines for fire elevators, fire hydrant pumps, and emergency lighting circuits in super high-rise residential buildings, large shopping malls, and five-star hotels; NH-A and NH-YJV series cables are preferred for high-end projects.

Dedicated fire control circuits for hospitals; fire-fighting linkage power distribution lines for government office buildings; NH-YJV series cables are commonly used in public bidding projects with strict fire protection standards.

Emergency shutdown control cables for energy storage containers; fire power supply circuits for ground-mounted photovoltaic power stations; stringent fire protection regulations in the new energy industry drive stable bulk procurement demand.

Fire alarm and exhaust fan power supply lines in electronics factories and food processing plants; the lightweight advantages of NH-YJV series unarmored cables are highly advantageous for indoor non-buried installations.

Emergency power distribution in terminal buildings; dedicated fire protection circuits in airport underground corridors; NH-YJV is typically specified in the design drawings of large-scale transportation infrastructure projects.

• NH-A: High-rise buildings, enclosed underground utility corridors, core medical emergency circuits;
• NH-B: Ordinary multi-story buildings, indoor factory conventional fire-resistant circuits; Our technical team provides free local fire code matching advice.

• Minimum bending radius ≥ 12 times the outer diameter of the finished cable; Avoid sharp corners when laying in conduits to prevent damage to the outer sheath.

• When laying in multiple rows of bundles, reserve fixed heat dissipation gaps; The factory provides dedicated current carrying capacity meters for different laying methods for electrical load calculation and cable selection reference.

• Strictly Differentiate Circuit Attributes: Standard YJV circuits should be selected for general lighting and non-fire protection circuits; only NH-YJV circuits should be mandatory for fire emergency circuits to avoid over-purchasing and reduce unnecessary costs.
• Phase-Based Construction Projects: Phased delivery based on construction progress is supported, reducing the buyer's on-site inventory capital tied up and warehouse rental costs.
• Customized for Special Environments: Corrosion-resistant modified outer sheaths can be customized before ordering for coastal salt spray/high chemical vapor environments.

• Domestic Qualifications: CCC mandatory certification, nationally recognized third-party full-type test reports, and NH fire resistance performance test certificate.
• International Compliance: IEC standard test documents, meeting local engineering access requirements in Southeast Asia, the Middle East, and Central Asia.
• Tender Support: Complete certification documentation package, which can be compiled into tender documents to support domestic government tenders and overseas EPC project qualification audits.

The overseas EPC contractor procured 41 kilometers of mixed NH-A NH-YJV (3×6~5×35mm²) cables for fire pumps and emergency lighting wiring in the inpatient building. Local fire protection standards for medical buildings are stringent; all cables passed third-party fire protection spot checks on the first attempt. A long-term annual framework contract was signed after project completion.

A new energy company purchased 33km of NH-B grade NH-YJV cable for the emergency protection power circuit of an energy storage container. The compact indoor layout required the use of high-temperature resistant cable, and XLPE insulation effectively solved the risk of aging in high-temperature environments. The project was connected to the grid as planned.

The municipal procurement department conducted a centralized tender for 57km of multi-core NH-YJV cable for the evacuation lighting circuit of the terminal building. The large-space, densely laid indoor environment matched the lightweight advantages of NH-YJV cable, and the finished product successfully passed the acceptance inspection by the construction party.

• Free specification matching, current carrying capacity verification, and assistance in preparing bidding technical parameters;
• Providing editable PDF data sheets and scanned certification documents to expedite drawing design and bid preparation;
• Accepting custom production of non-standard cross-sections/special environment sheaths.

• Direct factory supply, no middlemen markups; tiered pricing for large, long-term orders; stable copper inventory effectively hedges against market price fluctuations;
• Mainstream standard specifications are readily available to meet urgent short-term order needs; customized products can be arranged with dedicated production lines to shorten delivery cycles.

• We adhere to national standards for quality assurance; we can provide on-site construction technical guidance for large-scale projects;
• We issue formal factory authorization letters and complete qualification documents to assist buyers in participating in domestic and international bidding and improve their success rate.