NH-KVV is a fire-resistant multi-core control cable used to ensure
the continued operation of critical control, monitoring, and
command circuits during a fire, according to specified standards
and required durations. It is widely used in emergency system
interlocking and control cabling in buildings, transportation
facilities, and industrial sites where circuit continuity is a
critical component of life-safety design. NH-KVV is often chosen by
engineers when a dedicated control cable fabric (rather than a
power feeder) is required, as it supports stable terminations,
clear conductor identification, and scalable conductor counts to
meet control cabinet needs.
Rated Voltage
Typical project rated voltage: 450/750 V or 300/500 V (depending on
standards and tender requirements)
Please confirm the exact rated voltage and fire resistance
requirements specified in your Bill of Quantities (BOQ) to avoid
substitution risks.
Application Scenarios of NH-KVV
Common Application Scenarios
- Emergency system control circuits for smoke extraction equipment
- Auxiliary and control circuits for fire protection equipment
- Emergency lighting control and feedback loops
- Building automation emergency control and linkage circuits
- Critical status signals, alarms, and interlocking circuits in
evacuation routes
- Lines from control cabinets to field equipment requiring continuity
of wiring during a fire
Recommended Installation Environment
- Fixed installation in conduits, cable trays, shafts, risers,
technical corridors, equipment rooms, and protected pallet aisles.
Common Specifications Overview
Common Number of Cores
- 2, 3, 4 cores: For basic start/stop and interlocking devices
- 5, 7, 8, 10 cores: For multi-signal devices
- 12, 16, 20, 24 cores: For cabinet and subsystem cabling
- 30, 37, 48, 61 cores: For centralized I/O and large control panels
Common Conductor Cross-sectional Area (mm²)
- 0.5, 0.75, 1.0, 1.5, 2.5, 4, 6
- Common Contractor Specifications: 0.75, 1.0, 1.5, 2.5
High-Demand Procurement Examples
- 4 cores x 1.5: For equipment interlocking devices
- 7 cores x 1.0 and 10 cores x 1.0: For multi-signal devices
- 12 cores x 0.75 and 16 cores x 0.75: For cabinet cabling
- 24 cores x 0.5, for dense signal cabling
Availability is subject to availability based on core
identification methods and fire-resistant construction requirements
of reference standards.
Key Purchasing Advantages
- Ensuring Continuity of Life-Safety Control Circuitry
- Fire-resistant construction helps maintain control functions for a
specific period during a fire, supporting coordinated evacuation
and emergency response systems.
- High-Efficiency Multi-Core Cables for Cleaner Panels and Faster
Commissioning
- Higher core counts reduce cable congestion, improve labeling and
cabling, and simplify cabinet-to-field cabling management.
- Easy Termination and Maintenance for Contractors
- Control cable construction supports simple stripping, grouping, and
termination of control cabinets, relays, and terminals.
- Cost-Effective Control Cabling Compliance Solution
- Achieve fire-resistant performance targets for control circuitry
without overusing heavy-duty feeder solutions.
- Stable Supply for Projects and Distributors
- Universal cross-sections and repeatable constructions support
phased delivery and continuous replacement stock.
Manufacturing and Process Specifications
Conductor Preparation
Copper conductors are manufactured to the flexibility levels
required for cabinet installation and field cabling, and resistance
is controlled to ensure stable signal performance.
Fire-Resistant Component Integration
A dedicated fire-resistant coating is applied according to standard
requirements to form a critical barrier, ensuring circuit integrity
in fire environments.
Core Insulation Formation
The insulation layer is coated with a controlled thickness to meet
the dielectric performance and dimensional stability requirements
of multi-core assemblies.
Core Identification and Lamination
Cores are numbered or color-coded and then assembled according to
controlled lamination lengths to maintain harness stability and
improve sheath quality.
Sheathing and Surface Finishing
An outer sheath is coated to provide mechanical protection and
improve installation durability, and marked for easy traceability
and project control.
Routine Quality Inspections
Typical factory inspections include conductor resistance,
insulation thickness, spark testing, voltage testing, dimensional
inspection, continuity verification, and fire resistance
verification according to the required rating.
Structural Description
Conductor: Copper
Fire-resistant Components: Fire-resistant layer (standard design)
Core Insulation: PVC (common market specification)
Outer Sheath: PVC (common market specification)
Applications: Fire-resistant control and auxiliary circuits, fixed installation
Specifications
| Feature | Detail |
|---|
| Model | NH-KVV |
| Cable Category | Fire-resistant control cable |
| Rated Voltage | 450/750 V or 300/500 V (as per specification) |
| Number of Cores | 2 to 61 cores (common), other quantities can be customized |
| Cross-sectional Area | 0.5 to 6 mm² (Common) |
| Core Identification | Numbered or color-coded (depending on the project) |
| Typical Installation Methods | Conduit, cable tray, shaft, riser, protective tray, control cabinet
wiring |
| Packaging | Short cables are packaged in rolls; long cables and multi-core
cables are packaged in spools. |
| Customization Services | Printed language, packaging markings, mixed specification supply,
accompanying documentation |
Selection Guide
- When fire-resistant control cables are required to ensure normal
operation of emergency control functions in fire environments,
please select NH-KVV type cables.
- Select the number of cores based on the signal quantity and reserve
the number of channels required for expansion.
- Select the cross-sectional area based on the control load current,
line length, voltage drop limits, and termination requirements.
- If the line has strong electromagnetic interference, please specify
whether shielding is required. If the line has high mechanical
risks, please specify whether armoring or other protective measures
are required.
Quick Request for Quotation (Copyable)
Product: NH-KVV
Rated Voltage: __
Fire Resistance Requirements and Duration: __
Number of Cores: __
Cross-sectional Area: __ mm²
Total Quantity: __ meters
Installation Method: Conduit/Trough/Shaft/Spool/Distribution
Cabinet
Required Standards: __
Destination: Country and Port __
Trade Terms: __
Special Requirements: Core Numbering, Marking, Packaging Marking,
Reel Length, Documentation
Frequently Asked Questions
Is NH-KVV for power distribution or control?
NH-KVV is primarily used for control, command, status, and
auxiliary circuits. For main feeders, please select dedicated power
cables based on the load and installation method.
What does NH typically represent in the Bill of Materials (BOQ)?
It usually indicates a fire-resistant structure designed to
maintain circuit integrity during a fire. Specific testing methods
and durations are specified by reference standards.
What are the most commonly used specifications in this project?
Cables with diameters of 0.75, 1.0, 1.5, and 2.5 mm² are widely
used, while 2- to 24-core cables are commonly found in building and
industrial control systems.
Can they be installed in shafts and risers?
Yes. Cables are typically installed in shafts, risers, and enclosed
passageways to ensure critical control circuitry remains
operational in the event of a fire.
How do I choose between conductor numbering or color coding?
For applications with a large number of conductors and cabinet
cabling, numbered conductors are generally recommended. For
applications with a smaller number of conductors, color coding is
typically used. Please choose based on your installation and
maintenance practices.
What information is needed for a correct quote?
Rated voltage, fire resistance requirements and fire resistance
time, number of conductors, cross-sectional diagram, total length,
required standards, packaging preferences, and destination.
Service of JinHong Company
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.
Packaging of JinHong
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.
