Fire-Resistant Control Cable (NH-KVV Series)

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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.

Details

1. Structure Description

· 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

2. 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

3. 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

4. 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.

5. 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

6. 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

1. What is a Fire Rated Control Cable?
A control cable designed to maintain circuit integrity during a fire, ensuring critical systems continue operating safely.

2. Where is it commonly used?
Used in emergency power systems, fire alarms, safety lighting, control panels, and industrial installations where fire safety is essential.

3. What are its main construction features?
Copper conductors with fire-resistant insulation (such as XLPE, mica, or silicone), sometimes with additional shielding, and an outer fire-resistant sheath.

4. What are the benefits of fire rated control cables?
Maintains electrical continuity during fire, reduces risk of system failure, ensures safety in critical applications, and often produces low smoke and halogen-free gases.

5.Which countries do you export to?
Our products are exported to Southeast Asia, the Middle East, Europe, Africa, and the Americas.

Control Cable