NH-KVV Fire Rated Control Cable For Critical LV Control Circuits

NH-KVV is a fire-resistant control cable designed to maintain control and command circuits for a specific period of time under fire conditions, the exact duration depending on applicable standards. It typically consists of copper conductors, a fire-resistant layer (usually mica-based), PVC insulation, and a PVC outer sheath. Therefore, NH-KVV is ideal for emergency control wiring and critical auxiliary circuits in buildings and industrial facilities, especially where circuit continuity is required for evacuation, fire protection, and critical equipment control.

If your project requires "control cable + fire resistance" rather than power feeders, NH-KVV is a convenient and standard choice: familiar construction, a wide range of core counts, and easy integration into control cabinets and conduit/cable system systems.

Common rated voltages in many specifications are 450/750V.

Some projects may specify 300/500V depending on local standards and tender terms.

To ensure accurate pricing, please confirm the required rated voltage and fire resistance testing requirements in your Bill of Quantities (BOQ).

• Fire alarm and fire control linkage circuits (when fire resistance rating is specified)
• Smoke exhaust and pressurization control circuits
• Fire pump control and auxiliary circuits
• Emergency lighting control circuits
• Damper, valve, and actuator control in evacuation routes
• Building Management Systems (BMS) and emergency control loops in public buildings
• Critical interlocking and status feedback circuits in factories and utilities

• Cable trays, conduits, cable trays, shafts, risers, equipment rooms, control rooms
• Fixed installation routes with moderate mechanical risk and protected wiring

• Basic controls and interlocks: 2 cores, 3 cores, 4 cores
• Multi-signal devices: 5 cores, 7 cores, 8 cores, 10 cores
• 12 cores, 16 cores, 20 cores, 24 cores, 30 cores for distribution panels and system wiring
• 37C, 48C, 61C for large control cabinets and centralized I/O Wiring

• 0.5 0.75 1.0 1.5 2.5 4.0 6.0
• High-Frequency Procurement Specifications: 0.75 1.0 1.5 2.5

Actual supply depends on conductor grade, core identification method, and fire-resistant lining design required by standards.

• Fire-resistant Circuit Integrity, Ensuring Emergency Control
  Designed to maintain the normal operation of control circuits during a fire (as required by standards), thus supporting life safety functions and emergency equipment coordination.
• Familiar KVV Construction, Easy Installation
  PVC insulation and sheath construction facilitates termination, labeling, and wiring by contractors in distribution panels and conduits.
• Wide Core Count Range for Complex Systems
  Multi-core specifications reduce cable congestion, improve wiring efficiency, and simplify cabinet cabling management.
• Cost-Effective Control Circuit Compliance Choice
  Upgrade control cabling compliance selectively without overly opting for thicker power cable solutions.
• Easy Project Procurement and Repeat Ordering
  Universal sizes, consistent labeling, and a stable supply schedule support phased delivery for EPC and retrofit projects.

1. Copper Conductor Stranding
   Copper wire is drawn and stranded to achieve the required flexibility and resistance targets, ensuring the stability of cabinet cabling and termination.
2. Fire-resistant Layer Application
   A fire-resistant layer is applied to each conductor or conductor assembly (specific design depends on standards). This fire-resistant layer is a critical element in ensuring the integrity of the circuit in a fire environment.
3. Conductor Insulation Extrusion
   The PVC insulation layer is extruded with controlled thickness to meet dielectric performance and dimensional requirements.
4. Conductor Identification and Wiring
   Conductors are color-coded or numbered. Multi-core assemblies use a consistent strand length, with filler added as needed to maintain shape and improve sheath quality.
5. Inner Bundling and Sheath Extrusion
   Conductor bundles can be secured using bundling tape. A PVC outer sheath is extruded to provide mechanical protection and improve wiring durability.
6. Routine Testing and Release Control
   Typical checks include conductor resistance, insulation thickness, spark testing, voltage testing, dimensional verification, and continuity testing. Fire resistance verification is performed according to relevant standards and ratings.

Conductor:

Copper

Fire Resistance:

Fire-resistant layer (usually mica-based, specific to standard)

Insulation:

PVC

Outer Sheath:

PVC

Application:

Fixed installation fire-resistant control and auxiliary circuits

Model:

NH-KVV

Cable Type:

Fire-resistant control cable

Common Rated Voltage:

450/750V (depending on standard)

Conductor:

Copper stranded wire (grade according to standard)

Fire-resistant Layer:

As required standard (core wire or component design)

Insulation:

PVC

Sheath:

PVC

Core Quantity Range:

Commonly 2 to 61 cores (other quantities can be customized)

Common Cross-sectional Area:

0.5 to 6.0 mm²

Typical Installation Methods:

Cable trays, conduits, cable trays, shafts, control cabinets

Packaging:

Small-size cables are packaged in rolls; large-core and long-size cables are packaged in reels.

Marking:

Size, voltage rating, batch traceability; marking can be customized upon customer request.

• If you require a control cable that can maintain circuit operation in a fire environment for emergency coordination and life safety functions, please select the NH-KVV series cable.
• Select the core count based on the number of I/O ports and spare channels; select the cross-sectional area based on the control load current, line length, and allowable voltage drop.
• If your circuit has high electromagnetic noise, consider using shielded fire-resistant control cables.
• If your circuit has high mechanical risks, determine whether armoring or other protective measures are required.

Product:

NH-KVV

Rated Voltage:

450/750V or 300/500V

Fire Resistance Requirements:

Duration/Rating (by standard)__

Number of Cores:

__

Cross-sectional Area:

__ mm²

Quantity:

__ meters

Installation Method:

Cable Tray/Conduit/Cable Tray/Shaft/Rack

Required Standards:

__

Destination:

Country and Port__

Trade Terms:

__

Special Requirements:

Core Number, Printing Language, Packaging Markings, Reel Length, Inspection Documents

• Q1. What is NH-KVV mainly used for?
  A1. According to project standards, NH-KVV is used for critical control and auxiliary circuits that need to maintain operation for a certain period of time after a fire, such as emergency system control, smoke exhaust control, and fire pump auxiliary circuits.
• Q2. Is NH-KVV a power cable?
  A2. It is mainly used as a control cable for command, interlocking, and auxiliary circuits. For main power feeders, please select dedicated power cables that match the load and installation conditions.
• Q3: What does "NH" stand for in many specifications?
  A3: It usually indicates fire-resistant construction, designed to maintain circuit integrity during a fire. Specific testing methods and durations are specified by reference standards.
• Q4: What are the most commonly used sizes by contractors?
  A4: Common sizes are 0.75, 1.0, 1.5, and 2.5 mm², with core counts from 2 to 24 cores commonly seen in typical building and industrial control cabling.
• Q5: Can NH-KVV be installed in cable trays and conduits?
  A5: Yes. It is widely used in fixed installation paths such as cable trays, conduits, and trunking, especially in shafts and equipment rooms.
• Q6: What information is needed for a quick quote?
  A6: Rated voltage, fire resistance requirements, number of cores, cross-sectional area list, total meters, required standards, packaging preferences, and port of destination.

• Over Productions Service:
  JinHong has a wide range of cable and conductor products for you to choose from. We will provide caring services and professional project solutions for everyone who needs them.
• Quality Certification Services:
  JinHong cable products are manufactured according to GB, IEC, BS, NFC, ASTM, DIN, and other international standards. Our technical team can customize cable products that meet your requirements according to your needs.
• Profession Customer Service:
  JinHong provides free professional consulting services to provide you with one-stop project solution services and rapid product delivery solutions.
• Delivery And Shipping Services:
  While we at JinHong provide high-quality cables, we also provide good delivery solutions. While ensuring the safe delivery of products, we provide the best packaging and transportation solutions, greatly reducing customers’ transportation costs.

JinHong cable packaging is provided in the form of wooden reels, corrugated boxes, and coils. The cable ends are sealed with BOPP self-adhesive tape and a non-hygroscopic sealing cap to protect the cable ends from moisture. We can print the required marks on the outside of the barrel with waterproof material according to customer requirements.