The NH-KVV Fire-Resistant Control Cable is designed for signal transmission, control, and measurement systems that require circuit integrity during fire conditions. The cable uses fire-resistant mica tape and high-quality insulating materials to ensure reliable operation even under extreme fire environments. It maintains circuit continuity for a specified duration, protecting life and property safety in critical facilities.
- Conductor: Annealed copper wire, Class 1 or Class 2 as per GB/T 3956 or IEC 60228
- Insulation: PVC (Polyvinyl Chloride) or XLPE (Cross-linked Polyethylene)
- Fire-Resistant Layer: Mica tape wrapping over the conductor or insulation
- Core Identification: Color-coded or numbered
- Filling: Non-hygroscopic filler to maintain round shape
- Inner Sheath: PVC compound
- Armor (optional): Steel tape or steel wire armor available upon request
- Outer Sheath: Flame-retardant PVC, color: black or as per customer requirement
Technical Parameters
|
Item |
Standard Value |
|
Rated Voltage |
450/750V |
|
Conductor Temperature |
70°C (PVC), up to 90°C (XLPE) |
|
Fire Resistance |
750°C–800°C, ≥ 90 minutes (per GB/T 19666 or IEC 60331) |
|
Test Voltage |
2000V/5min |
|
Minimum Bending Radius |
6× cable overall diameter (unarmored), 12× (armored) |
|
Operating Temperature Range |
-15°C ~ +70°C |
|
Flame Retardancy Standard |
IEC 60332-1 / GB/T 18380.1 |
|
Fire Resistance Standard |
IEC 60331 / GB/T 19216 |
Model and Name
|
Model |
Name |
Description |
|
NH-KVV |
Fire-Resistant Control Cable |
PVC insulated and sheathed |
|
NH-KVVP |
Fire-Resistant Shielded Control Cable |
With copper wire braid shield |
|
NH-KVVP2 |
Fire-Resistant Copper Tape Shielded Control Cable |
With copper tape shield |
|
NH-KVV22 |
Armored Fire-Resistant Control Cable |
Steel tape armored |
|
NH-KVVP2-22 |
Armored Fire-Resistant Shielded Control Cable |
Copper tape shield + steel tape armor |
Product Features
- Excellent fire resistance and circuit integrity under flame exposure.
- Stable electrical performance, low signal distortion, and interference protection.
- Flexible installation, suitable for fixed laying indoors or in conduits.
- Available with or without armor and shielding according to project requirements.
Application Fields
- Power plants and substations
- Metro and rail transit systems
- High-rise buildings
- Petrochemical and industrial automation systems
- Fire alarm and emergency control systems
Standards Compliance
- GB/T 9330 (Control Cable Standard)
- GB/T 19666 (Flame Retardant and Fire-Resistant Cable Standard)
- IEC 60228 / IEC 60331 / IEC 60332
FAQ
Q: What is a Fire Rated Control Cable?
A: A control cable designed to maintain circuit integrity during a fire, ensuring critical systems continue operating safely.
Q: Where is it commonly used?
A: Used in emergency power systems, fire alarms, safety lighting, control panels, and industrial installations where fire safety is essential.
Q: What are its main construction features?
A: Copper conductors with fire-resistant insulation (such as XLPE, mica, or silicone), sometimes with additional shielding, and an outer fire-resistant sheath.
Q: What are the benefits of fire rated control cables?
A: Maintains electrical continuity during fire, reduces risk of system failure, ensures safety in critical applications, and often produces low smoke and halogen-free gases.
Q: Which countries do you export to?
A: Our products are exported to Southeast Asia, the Middle East, Europe, Africa, and the Americas.
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