Fire-Resistant Cables

Fire-resistant cables are a category of special cables designed to maintain circuit integrity and stable power transmission under high-temperature and fire conditions. With specialized fire-resistant material selection and structural design, they sustain power supply for a specified duration during fires, delivering critical support for personnel evacuation, firefighting equipment operation and emergency power supply of key systems.

I. Main Types & Core Specifications

1. FR-YJV: XLPE Insulated PVC Sheathed Fire-Resistant Cable

• Conductor: Copper (Cu) or Aluminum (Al)

• Insulation: Cross-linked Polyethylene (XLPE)

• Sheath: Polyvinyl Chloride (PVC)

• Voltage Class: 0.6/1 kV, 8.7/15 kV

• Fire Resistance Standard: Complies with GB/T 19666, IEC 60331; Fire-resistant duration ≥ 90 min

2. FR-KVV: PVC Insulated PVC Sheathed Fire-Resistant Control Cable

• Conductor: Multi-strand fine copper wires (enhanced flexibility)

• Insulation: Polyvinyl Chloride (PVC)

• Sheath: Polyvinyl Chloride (PVC)

• Voltage Class: 450/750 V

• Application Scenarios: Fire control systems, alarm systems and other occasions requiring stable signal transmission

3. FR-BV: PVC Insulated Fire-Resistant Wire

• Conductor: Single-core copper wire

• Insulation: PVC with fire-resistant additives

• Voltage Class: 450/750 V

• Core Features: Compact structure, easy installation; Suitable for emergency lighting and firefighting equipment power supply in buildings

II. Core Product Advantages

1. Superior Fire ResistanceMaintain continuous power supply for over 90 minutes at 750°C~1000°C, ensuring the normal operation of smoke exhaust fans, emergency lighting, fire pumps and other core firefighting equipment. Among them, Mineral Insulated Cables (MICC/BTTZ) can sustain power supply for more than 3 hours in a fire.

2. Optional Low Smoke Zero Halogen (LSZH) PropertiesCertain models can be equipped with LSZH sheaths, which emit no toxic halogen gases during combustion. This effectively reduces personnel poisoning risks in fire scenarios, ideal for places with strict environmental and safety requirements.

3. High Mechanical Strength for Complex Working ConditionsArmored fire-resistant cables (e.g., FR-YJV22) feature excellent compression and impact resistance. They are suitable for direct burial installation and operation in harsh industrial environments, enhancing protection against external mechanical damage.

III. Typical Application Fields

1. Building Fire Protection SystemsApplicable to emergency lighting, fire elevators, smoke exhaust fans, fire alarm systems and other core subsystems. Widely used in high-rise buildings, subways, airports, hospitals and other crowded places.

2. Industrial Critical Equipment ScenariosSuitable for high-temperature working environments such as petrochemical plants, power systems and steel mills. Also applicable to the Uninterruptible Power Supply (UPS) systems of data centers and communication base stations, ensuring stable emergency power supply for key industrial equipment and data facilities.

3. Transportation & Special Public FacilitiesCovers tunnel lighting, railway signal systems and other transportation supporting facilities. Also used in special places with stringent power supply safety requirements, such as nuclear power plants and military facilities.

IV. Precise Selection Recommendations

• General building fire protection systems: Prioritize FR-YJV series—cost-effective and capable of stably meeting the core 90-minute fire resistance requirement.

• Control signal transmission scenarios: Adopt FR-KVV series to match the signal transmission needs of fire alarm and automation control systems.

• Temporary emergency power supply needs: Select FR-BV series—easy to install with controlled costs, suitable for simple emergency power supply circuits.