Product Introduction
Product Introduction
This flexible mineral-insulated fire-resistant cable is a high-performance, code-compliant power cable engineered for mission-critical fire safety applications. Built with inorganic mineral insulation and a corrugated copper sheath, it delivers uninterrupted power supply during severe fire conditions, meeting the most stringent global fire safety standards for commercial, industrial, and public infrastructure projects.
product key technologies
Product Construction
- High-Purity Oxygen-Free Copper ConductorMade of stranded high-conductivity oxygen-free copper, this core ensures low electrical resistance for efficient power transmission. The stranded design enhances flexibility, reducing fatigue and damage during installation and long-term operation.
- Inorganic Mineral Insulation LayerA high-temperature-resistant inorganic mineral material (mica-based or ceramicized insulation) forms the primary fire-resistant barrier. It is non-combustible, heat-stable, and maintains electrical insulation integrity even at extreme temperatures, with zero toxic gas release during combustion.
- Corrugated Copper SheathA precision-formed corrugated copper tape layer with multi-functional performance:
Acts as a robust mechanical shield against impact, moisture, and corrosion
Functions as a continuous earth conductor, eliminating the need for a separate ground wire
The corrugated design drastically improves cable flexibility, enabling easy bending around tight corners
- Low-Smoke Zero-Halogen (LSZH) Flame-Retardant Outer SheathThe outermost layer is made of LSZH flame-retardant polyolefin. It provides additional protection against environmental factors (UV, moisture, chemicals), while producing minimal smoke and no toxic halogen fumes when burned, reducing risks to personnel during emergencies.
Core Product Advantages
- Unmatched Fire Resistance & Uninterrupted PowerMaintains continuous power supply for over 3 hours under 950°C–1000°C flame exposure, meeting Class A fire resistance standards per international codes (IEC/BS/GB). Ensures critical systems (fire pumps, emergency lighting) remain fully operational during fires.
- Superior Installation FlexibilityUnlike rigid mineral-insulated cables, the corrugated copper sheath allows for easy bending (small bend radius) and installation in tight spaces. Supplied in continuous reels, eliminating the need for on-site cutting or special processing, reducing labor time and costs by up to 30%.
- All-Weather & Harsh Environment DurabilityThe copper sheath provides inherent protection against water, moisture, rodent damage, and mechanical stress. Suitable for direct burial, conduit, tray, and overhead installations, with no additional protective layers required for most applications.
- Long Service Life & Low Total Cost of OwnershipInorganic insulation and corrosion-resistant copper materials offer exceptional resistance to aging, heat, and environmental degradation. With a service life of over 70 years (matching building lifespans), it eliminates the need for costly replacements or maintenance.
- Eco-Friendly & Safety-Compliant100% LSZH construction ensures low smoke, zero halogen, and non-toxic combustion. Compliant with global environmental and safety regulations, reducing secondary hazards in fire emergencies.
What Are the Product Application Scenarios?
- Commercial & High-Rise Buildings: Office towers, hotels, shopping malls, and mixed-use complexes, for fire pumps, emergency lighting, smoke exhaust systems, and fire elevators.
- Transportation Infrastructure: Metro systems, airports, high-speed rail stations, road tunnels, and seaports, for emergency power supply and life safety systems.
- Healthcare & Public Facilities: Hospitals, nursing homes, schools, stadiums, and government buildings, where uninterrupted power is critical for life safety.
- Industrial & Critical Infrastructure: Power plants, data centers, chemical plants, offshore platforms, and underground utility tunnels, for high-reliability power distribution in high-risk environments.
- Municipal & Emergency Systems: Emergency command centers, municipal public safety projects, and disaster-resilient infrastructure requiring maximum fire safety.
Single-Core Cable (1-Core)
| Cross-Section Area(mm²) | Conductor Structure (No.×d/mm) | Insulation Thickness (mm) | Corrugated Copper Sheath(mm) | Overall Diameter (mm) | Approx. Weight (kg/km) | Max. Continuous Current(A) |
|---|---|---|---|---|---|---|
| 1.5 | 16×0.30 | 0.7 | 0.5 | 6.8 | 180 | 25 |
| 2.5 | 19×0.41 | 0.7 | 0.5 | 7.5 | 240 | 34 |
| 4 | 19×0.52 | 0.7 | 0.5 | 8.2 | 300 | 45 |
| 6 | 19×0.64 | 0.7 | 0.6 | 9.0 | 380 | 57 |
| 10 | 37×0.58 | 0.8 | 0.6 | 10.8 | 520 | 85 |
| 16 | 37×0.74 | 0.8 | 0.6 | 12.2 | 700 | 110 |
| 25 | 61×0.74 | 0.9 | 0.7 | 14.5 | 980 | 145 |
| 35 | 61×0.85 | 0.9 | 0.7 | 15.8 | 1250 | 175 |
| 50 | 91×0.85 | 1.0 | 0.8 | 18.0 | 1650 | 215 |
| 70 | 91×1.00 | 1.0 | 0.8 | 20.2 | 2200 | 265 |
| 95 | 127×1.00 | 1.1 | 0.9 | 22.8 | 2900 | 320 |
| 120 | 127×1.08 | 1.1 | 0.9 | 24.5 | 3500 | 360 |
| 150 | 181×1.02 | 1.2 | 1.0 | 27.0 | 4200 | 405 |
| 185 | 181×1.12 | 1.2 | 1.0 | 29.2 | 5000 | 455 |
| 240 | 247×1.12 | 1.4 | 1.1 | 33.0 | 6500 | 540 |
Ordering & Service Support
1.Flexible Ordering
We offer ready-to-ship stock for standard sizes, and accept mass production for custom or large-section cables. Low MOQ is available for samples, trial orders and mass production for vehicle projects.
2.On-Time Delivery
With our own production base and complete supply chain, we arrange production quickly for regular orders and ensure punctual delivery for bulk orders, supporting long-term stable supply for overseas customers.
3.Professional Technical Support
Free cable selection, current rating calculation and wiring installation guidance are provided. We can also supply product specifications, test reports and full technical support for your projects.
4.Complete Quality Assurance
Each batch undergoes strict inspection before delivery with qualified quality certificates. Our products comply with new energy vehicle standards for stable and reliable performance.
5.Efficient After-Sales Service
Full order tracking and real-time logistics updates are available. We respond promptly to after-sales inquiries with one-to-one service for a worry-free experience.
why choose us
Lorem ipsum dolor sit amet consectetur adipisicing elit.
Thoughtful service - worry free after-sales service
global logistics
Provide global express and sea freight services, door-to-door, worry free and convenient.
Explanation: Our professional engineering team provides selection and technical support to answer your questions and clarify any doubts.
Provide comprehensive quality assurance and after-sales policies to ensure worry free procurement for you.
FAQ
Q: What is the fire resistance performance of this cable?
A: It reaches Class A fire resistance standard, can keep normal power supply continuously for more than 3 hours under 950℃~1000℃ high temperature flame.
Q: What is the difference between RTTZ/YTTW and ordinary fire-resistant cable?
A: Adopts inorganic mineral insulation and corrugated copper sheath, no combustion, no toxic gas release. Ordinary fire-resistant cables only add fire-resistant tape and cannot work long in severe fire.
Q: Can this cable be directly buried and used in underground pipe gallery?
A: Yes. The integrated copper sheath has waterproof, moisture-proof, anti-corrosion and rodent-proof function, suitable for direct burial, tray laying, pipe gallery and tunnel engineering.
Q: Is this cable flexible for construction installation?
A: Very flexible. Corrugated copper sheath design allows small bending radius, easier wiring in narrow space than rigid MI cable, no special construction tools needed.
Q: How long is the service life of the cable? Is regular maintenance required?
A: Service life can reach more than 70 years, matching the building life. Adopt aging-resistant inorganic materials, no regular maintenance and replacement needed.
Q: What international standards does this cable comply with?
A: It complies with IEC 60702, BS 6387 and relevant international fire safety standards, suitable for commercial, industrial and municipal engineering projects worldwide.
Our address
West of Sanqiao Street Office, Weiyang District, Xi'an City, Shaanxi Province, adjacent to Fortune Building
Hot Tags: corrugated copper sheath mineral insulated fireproof cable, China corrugated copper sheath mineral insulated fireproof cable manufacturers, suppliers, factory, 3 core power cable, 5 core 4mm sy cable, aluminium power cable price, Aluminum Cable, wire armoured cable, YJV YJV22 YJV32 Low Voltage Copper
