The Fire-Resistant Armored Cable is designed to maintain power and control circuit integrity during fire conditions while providing strong mechanical protection. It combines fire-resistant mica tape insulation with steel tape or wire armor, ensuring both electrical safety and superior durability. These cables are suitable for fixed installations where circuit continuity is essential during fire, such as in power plants, tunnels, subways, industrial control systems, and public facilities.
Fire-resistant for at least 90 minutes under 750–950°C
Complies with IEC 60331, and GB/T 19666 standards
Excellent flame-retardant, low-smoke, halogen-free options available
High mechanical strength and impact resistance
Resistant to heat, oil, and chemical corrosion
Stable signal and power transmission during fire exposure
Suitable for indoor and outdoor fixed installations
Cable Structure
|
Component |
Description / Material |
|
Conductor |
Annealed copper wire, Class 1 (solid) or Class 2 (stranded) |
|
Fire Barrier |
Mica tape wrapped around each conductor |
|
Insulation |
XLPE, PVC, or silicone rubber |
|
Filler |
Flame-retardant non-hygroscopic compound |
|
Inner Sheath |
Flame-retardant PVC or LSZH compound |
|
Armor Layer |
Steel tape or steel wire braid for enhanced mechanical protection |
|
Outer Sheath |
Flame-retardant PVC or LSZH compound |
|
Color |
Red or orange (customized available) |
Technical Parameters
|
Item |
Standard Value |
|
Rated Voltage |
0.6/1kV |
|
Conductor Cross-Section |
1.5 mm² – 400 mm² |
|
Number of Cores |
1-5 cores |
|
Operating Temperature Range |
–15°C to +90°C (normal) / up to +950°C (fire condition) |
|
Fire Resistance Test |
750–950°C for ≥90 min (IEC 60331) |
|
Flame Performance |
IEC 60332-3 |
|
Insulation Resistance |
≥ 200 MΩ·km |
|
Armor Type |
Galvanized steel tape / wire braid |
|
Halogen Content |
≤ 0.5% (for LSZH types) |
Model and Name
|
Model |
Name |
Description |
|
NH-VV22 |
Fire-resistant armored cable |
Copper conductor + PVC insulation + steel tape armoring + PVC sheath |
|
NH-VV32 |
Fire-resistant steel wire armored cable |
Copper conductor + PVC insulation + steel wire armor + PVC sheath |
|
NH-YJV22 |
Fire-resistant armored cable |
Copper conductor + cross-linked polyethylene insulation + steel tape armoring + polyvinyl chloride sheath |
|
NH-YJV32 |
Fire-resistant steel wire armored cable |
Copper conductor + cross-linked polyethylene insulation + steel wire armor + polyvinyl chloride sheath |
Typical Applications
- Fire alarm and emergency systems
- Power supply for fire pumps and smoke extraction fans
- Control and monitoring circuits in tunnels, subways, and high-rise buildings
- Industrial power distribution systems requiring fire integrit
- Refineries, chemical plants, and offshore platforms
Product Advantages
- Ensures circuit continuity under fire exposure
- Strong mechanical protection from armor layer
- Excellent flame retardancy, low smoke, and halogen-free options
- Long service life and reliable performance in harsh environments
- Complies with IEC, and GB international standards
Ordering Information
When ordering, please specify:
1. Cable type (e.g., NH-YJV22, NH-VV22, NH-VV32)
2. Conductor cross-section (e.g., 3×2.5 mm²)
3. Number of cores
4. Insulation and sheath material (PVC / XLPE / LSZH)
5. Armor type (Steel Tape or Steel Wire)
6. Rated voltage and required fire resistance level
Example:
NH-YJV22 3×2.5 mm² - Fire-Resistant Armored Power Cable - 0.6/1 kV - Steel Tape Armored - Mica Tape Fire Barrier - 90 min Fire Integrity
FAQ
Q: What is a Fire Resistant Armoured Cable?
A: A cable designed to maintain its integrity during a fire while providing mechanical protection through an armor layer, ensuring continued operation in critical conditions.
Q: Where is it commonly used?
A: Used in fire safety circuits, emergency power systems, fire alarms, and industrial applications where fire resistance and mechanical protection are essential.
Q: What are its main construction features?
A: Copper or aluminum conductors
Fire-resistant insulation (such as XLPE, mica, or silicone)
Armored with steel wire or tape for mechanical protection
Fire-resistant outer sheath
Q: What are the benefits of fire-resistant armoured cables?
A: Continues operation during a fire for critical systems
Provides mechanical protection against physical damage
Prevents short circuits and system failures in high-risk environments
Suitable for harsh environments and fire-prone areas
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