NH-KVV Flame Retardant Fire-Resistant Control Cable – Maintains Circuit Integrity Under Fire Conditions

High-fire-risk industrial environments (chemical plants, oil refineries, power plants) frequently face the problem of cable burnout during fires, leading to control system failures, secondary disasters, and significant economic losses. NH-KVV fire-resistant control cables, with their specialized fire-resistant design and robust materials, are designed to solve these problems. This cable features high-purity Category 2 stranded copper conductors, fire-resistant XLPE insulation, a mineral-filled fire-resistant layer, and a reinforced PVC outer sheath. It maintains stable signal transmission for 90 minutes in a fire (compliant with IEC 60332-3-24 standard), blocks 98% of EMI/RFI interference, is resistant to industrial oils and abrasion, and operates stably in a temperature range of -30°C to 70°C. This product is certified to EU (CE/RoHS 3.0), North American (UL 1685), Australian (SAA), and Middle East & North Africa (SASO) standards, making it a trusted choice for high-fire-risk manufacturing plants, PLC system integrators, and industrial safety engineers worldwide.

NH-KVV is a high-performance, low-voltage (0.45/0.75kV) fire-resistant control cable specifically designed for signal transmission and control command delivery in high-fire-risk industrial environments. It can be used to connect PLCs, sensors, actuators, and control panels in chemical plants, oil refineries, power plants, and other flammable environments. Its fire-optimized structure ensures dual reliability: Category 2 stranded copper conductors (low resistance, stable signal), fire-resistant XLPE insulation (high temperature resistance, low signal attenuation), a mineral-filled fire-resistant layer (core fire-resistant component, isolating flames and heat), and a reinforced PVC outer sheath (protective layer, oil-resistant, abrasion-resistant, and UV-resistant).

"NH-KVV" Definition: NH = Fire-resistant (compliant with IEC 60332-3-24 standard, fire resistance time 90 minutes); K = Control cable (specifically for industrial control scenarios); V = PVC outer sheath; V = Fire-resistant XLPE insulation layer. Its unique feature: Unlike non-fire-resistant KVV/KVVR/KVVP cables, NH-KVV adds a mineral-filled fire-resistant layer, solving the core pain point of cable failure in fires. It is specifically designed for precision control systems with high fire risk, ensuring the continuity of control signals in emergency fire situations—distinguishing it from all non-fire-resistant control cables and providing unique fire safety features.

• 90-minute fire resistance performance and fire-safe signal: Compliant with IEC 60332-3-24 and UL 1685 fire resistance standards, maintaining stable signal transmission for 90 minutes in fire environments of 750℃~950℃. Ensuring the continuity of control systems during fires, enabling emergency shutdowns and personnel evacuations, and reducing secondary disaster losses by 60%—this is crucial for safety in high-fire-risk industries.
• Stable signal transmission for precise control: Utilizing uniform cross-section Class 2 stranded copper conductors and fire-resistant XLPE insulation, signal attenuation is minimized (attenuation ≤1.3% over a 1.5mm² cross-section and 100m length) and capacitance (≤170pF/m). This ensures accurate transmission of control commands between the PLC and field devices, improving automation precision by 40%, making it ideal for chemical filling lines, oil refinery process control, and power plant auxiliary systems.
• Industrial-grade oil, wear, and chemical corrosion resistance: The reinforced PVC outer sheath is fortified with oil-resistant, wear-resistant, and chemical corrosion-resistant additives, resisting industrial oils (mineral oils, lubricating oils), greases, weak acids/bases (pH 3~11), and mechanical friction. Passing 12,000 cycles of wear testing, the sheath maintains its integrity even in high-friction and chemically corrosive environments. The sheath remains crack-free and the fire-resistant layer undamaged, extending service life to over 12 years even in harsh, high-fire-risk environments.
• Globally adaptable to all climates (-30°C to 70°C): The PVC sheath features an antifreeze, UV-resistant, and salt-spray-resistant formula. It can operate reliably in environments ranging from -30°C in Arctic power plants, 70°C in high-temperature control systems of oil refineries, 60°C in desert chemical plants, and coastal industrial facilities. Moisture-resistant, dust-proof, and salt-spray-proof, it requires no additional protective housing in most high-fire-risk industrial scenarios worldwide.
• Global high-fire-risk industrial certifications and compliance: CE/RoHS 3.0 (EU, compliant with EN 50200 and IEC 60228 standards), UL 1685 (North America, compliant with NFPA 70 NEC standards), SAA (Australia/New Zealand), SASO (Middle East and North Africa) certifications. We provide customized compliance documentation (e.g., fire resistance test reports, industrial safety certificates) for high fire risk projects to ensure smooth project approval. Popular specifications are readily available (3-day fast shipping) to support urgent automation upgrades for high fire risk projects.

Note: All specifications listed above are in stock (fast shipping within 3 days). Bulk orders can be customized with core count (up to 37 cores) and cross-sectional area (0.75~6mm²), guaranteeing comprehensive fire resistance, signal stability, and regional certification. We provide IEC/UL compliant color-coded core wires and fire-resistant cable accessories for easy installation and safety.

NH-KVV cables are designed to meet the signal transmission needs of high-fire-risk industrial control projects worldwide, covering regional application scenarios with high compliance requirements:

• EU Market: Chemical plant process control, pharmaceutical production line safety control, power plant auxiliary system wiring, refinery PLC systems (compliant with CE/RoHS 3.0 standards, meets EN 50200 and IEC 61131-2 fire control standards)
• North American Market: Refinery emergency control systems, aerospace component manufacturing safety control, food processing plant fire protection automation, industrial boiler control panels (UL 1685 certified, compliant with NFPA 70 NEC and IEEE 61010 safety standards)
• Australia and New Zealand: Mine fire protection control systems, coastal refinery PLC wiring, inland power plant auxiliary control, agrochemical processing plant automation (compliant with SAA standards) Certified (resistant to salt spray, inland high temperatures, and mineral dust)
• Middle East and North Africa Market: Fire control for petrochemical plants in desert areas, emergency shutdown systems for oil and gas fields, automated production lines in high-fire-risk smart factories, safety control panels for plastic processing plants (SASO certified, heat-resistant, sand-resistant, and oil-resistant)
• Global high-fire-risk applications: Control systems for waste incineration plants, control circuits for port oil depots, auxiliary system control for nuclear power plants, automation for high-rise industrial buildings (fireproof, stable signal, compatible with all major PLC brands)

• - What is the difference between NH-KVV cables and KVV cables?

  NH-KVV cables have a mineral-filled fire-resistant layer (fire resistance time of 90 minutes, conforming to IEC 60332-3-24 standard), suitable for high fire risk environments; KVV cables are not fire-resistant (only suitable for fixed installations with low fire risk). NH-KVV cables ensure the continuity of control signals in a fire, while KVV cables fail upon exposure to fire—NH-KVV cables are suitable for the chemical, petroleum, or power industries.

• - What is the fire resistance rating of NH-KVV cables?

  NH-KVV cables meet Class A fire resistance rating (conforming to IEC 60332-3-24 standard) and can operate stably for 90 minutes in fire environments ranging from 750°C to 950°C. For extreme high-temperature fire scenarios (≥1000℃), we offer the NH-KVV-H version with enhanced fire resistance, extending the fire resistance time to 120 minutes and meeting UL 1685 Class C standards.

• - Can NH-KVV be used in outdoor high-risk fire control systems?

  Yes. Its UV-resistant and moisture-proof PVC sheath is suitable for outdoor high-risk fire scenarios (e.g., outdoor oil depot control, outdoor power station wiring). For long-term outdoor use in rainy or high-humidity areas, we recommend the NH-KVV-OW version, specifically designed for outdoor environments. This version features an enhanced waterproof sheath and added UV-resistant additives.

• - Is NH-KVV compatible with all major PLC brands?

  Fully compatible. It is fully compatible with top global PLC brands, including: Siemens, Rockwell Automation, Mitsubishi Electric, Omron, Schneider Electric, and Rockwell Automation. Stable signal transmission and fire-resistant performance ensure seamless communication between the PLC and field devices under normal and fire emergency conditions. We provide PLC system compatibility test reports for bulk orders.

• - What is the minimum order quantity (MOQ) for custom core counts of NH-KVV?

  The MOQ for custom core counts (e.g., 18 cores, 24 cores) is 600 meters per specification. For urgent small-batch custom orders (300-600 meters) for maintenance of high-fire-risk control systems, we offer priority production service with a small surcharge, guaranteeing delivery within 10 working days.

• Does NH-KVV have interference immunity?

  Yes. While its core advantage lies in its fire resistance, the fire-resistant XLPE insulation and compact construction also provide basic interference immunity (blocking 85% of EMI/RFI). For high fire risk and high interference environments (e.g., oil refineries near frequency converters), we offer the NH-KVVP fire-resistant shielded version, which features a 90% copper braided shielding layer that combines fire resistance and interference immunity.