2025/8/11 15:33:35
In mission-critical environments like airports, hospitals, tunnels, and high-rise buildings, reliable alarm communication during fire events is non-negotiable. While conventional coaxial cables may provide signal integrity under normal conditions, they often fail in high-temperature, flame-exposed environments. This is where fire resistant coaxial cable becomes essential.
A fire resistant coaxial cable is designed to maintain signal transmission even under fire conditions. Unlike standard flame retardant cables, which only delay the spread of fire, fire resistant cables ensure circuit integrity for a defined period, typically up to 90 minutes.
These cables are built with mica tapes, fire-resistant insulation layers, and halogen-free sheathing that withstand flame, heat, and even water spray.
Fire alarm loop circuits (e.g. smoke and heat detectors)
Emergency communication systems (voice evacuation)
CCTV and access control in critical zones
Data transmission in tunnel or underground control systems
BS 6387 CWZ – flame, impact, water testing (180 min rated)
IEC 60331 – circuit integrity under fire
IEC 61034, IEC 60754 – low smoke and non-toxic gas performance
Use fire barrier glands in firewall penetrations
Choose 75Ω or 50Ω cables based on system impedance
Prefer LSZH (low smoke, zero halogen) sheaths for people safety
Validate third-party certifications and test reports
If your system needs to function during an emergency, fire resistant coaxial cable is the only choice. BURY CABLE offers tested, BS 6387-compliant fireproof coaxial products tailored for fire protection and alarm systems.
