Shenghua MI/cBTTZ Fireproof Cables: Unmatched Safety in Extreme Fire Conditions

Shenghua MI/cBTTZ Fireproof Cables: Unmatched Safety in Extreme Fire Conditions"​

In critical infrastructures like subway tunnels, hospitals, and petrochemical plants, ​​traditional cables fail catastrophically during fires—melting at 300°C and emitting lethal halogens​​. The 1987 King’s Cross fire (toxic smoke killed 31 people) exposed this flaw. Shenghua’s ​​MI/cBTTZ Rigid Fireproof Cable​​ redefines resilience with copper-sheathed magnesium oxide (MgO) insulation, zero-toxicity materials, and compliance with ​​IEC 60702/GB standards​​, ensuring circuit integrity even at 1,083°C (copper’s melting point) for 3 hours

​​Breakthrough Design: Three-Layer Life-Saving Architecture​​

1. ​​Oxygen-Free Copper Conductor​​:
   • ​​Overload Resilience​​: Maintains functionality during 250°C continuous operation and transient overloads up to 1,083°C. MgO crystals resist carbonization, allowing post-overload reuse without performance loss
      
2. ​​MgO Insulation​​:
   • ​​950°C/3h Circuit Integrity​​: Outperforms generic XLPE (fails at 250°C) and resists radiation in nuclear facilities
      
3. ​​Seamless Copper Sheath​​:
   • ​​2–6D Bend Radius​​: Enables tight installations in confined spaces like elevator shafts or rail conduits—unlike rigid mineral cables requiring 15D bends
      

​​Critical Applications: Where Shenghua Saves Lives​​

• ​​Public Transit Tunnels​​:
  Powers emergency lighting during fires (e.g., post-King’s Cross safety upgrades), with ​​zero smoke emission​​ ensuring >90% light transmittance for evacuation
   
• ​​High-Rise Hospitals​​:
  Copper sheath blocks toxic gas release in stairwells, complying with BS 8519 fire-resilient power standards
   
• ​​Petrochemical Plants​​:
  Resists oil/acid corrosion and mechanical stress from explosions, sustaining operations during emergencies
   

​​Certifications: Trusted by Global Safety Standards​​

Shenghua’s adherence to ​​IEC 60702-2002​​ (Global) and ​​JG/T313-2014​​ (China) validates

• ​​Toxicity Control​​: 0 ppm halogen emission (per IEC 60754-1), preventing hydrochloric acid formation.
• ​​Flame Retardancy​​: Exceeds IEC 60332-3-22 (flame spread ≤1.5m).
• ​​Interoperability​​: Compatible with Siemens/ABB switchgear without retrofitting.

​​Technical Superiority vs. Generic Fireproof Cables​​

​​Why Engineers Specify Shenghua​​

1. ​​Installation Efficiency​​:
   • ​​6D bend radius​​ slashes labor time by 40% in complex layouts like data centers
      
2. ​​Lifetime Cost Savings​​:
   • ​​30+ year lifespan​​ (vs. 15–20 years for generic cables) reduces replacements despite 10–15% higher upfront cost
      
3. ​​Eco-Safety​​:
   • Recyclable copper/MgO aligns with EU RoHS, avoiding PFAS "forever chemicals"