Copper PVC Fire Resistant Control Cable

Basic Product Model: N-KVV(NH-KVV).

Copper PVC Fire Resistant Control Cable combines a copper conductor, mica-tape fire-resistant layer and PVC insulation and sheath for control and auxiliary circuits that require fire-resistant cable construction. The 450/750V cable is intended for applications where maintaining circuit continuity for a specified period under fire exposure is part of the system design. Depending on the conductor construction, the cable can be configured with Class 1 or Class 5 copper conductors.

The mica tape forms the key fire-resistant layer around the conductor, while the flexible conductor options make the cable easier to route through cable trays, control cabinets and equipment connections. Specification selection should take into account conductor cross-section, core quantity, installation conditions and the fire-performance requirements of the complete electrical system.

Product Specification Dimensions and Technical Parameter Table

Fire-Resistant Construction and Cable Design

Mica-Tape Fire-Resistant Layer

Mica tape is positioned around the conductor as the principal fire-resistant component. Under fire exposure, this layer is intended to maintain electrical insulation for the specified test conditions and help preserve circuit continuity for the required period. The actual fire-resistance rating should be confirmed against the applicable product specification and test method for the project.

Copper Conductor Options

The conductor construction can be based on Class 1 or Class 5 copper according to the required cable configuration. The technical table provides conductor quantity, cross-section and 20℃ DC resistance values, allowing electrical parameters to be checked before specification confirmation.

PVC Insulation and Sheath

PVC provides the primary insulation around the conductor and contributes to the overall mechanical protection of the cable. The listed insulation thickness changes with nominal cross-section, so the cable specification should be selected together with the required conductor size and installation conditions.

How the Cable Fits Fire-Protection Control Systems

Copper PVC Fire Resistant Control Cable is intended for circuits where control, alarm, monitoring or auxiliary functions may need to remain available during a fire event for a defined period. Typical circuits include fire-protection control cabinets, smoke-exhaust equipment, fire pumps and other electrically controlled systems.

The fire-resistant function should be considered as part of the complete circuit design. Cable routing, supporting method, connected equipment, installation environment and the required fire-resistance classification can all affect the final system performance.

Application Scenarios

1. Fire-protection Engineering: Fire-protection linkage control cabinets, fire alarm systems, smoke exhaust fans and fire-water pump control circuits.

2. Power Plants: Electrical control cabinets, secondary control lines for generator sets and control or signal wiring in power distribution rooms.

3. Metallurgical Industry: Automatic operation consoles and control circuits for production-line equipment in metallurgical workshops.

4. Building Construction: Basement machine rooms, central air-conditioning systems and elevator fire-protection linkage control systems.

5. General Industry: Wastewater treatment equipment, drying production lines and machine-tool supporting control circuits where fire-resistant construction is required.

Practical Selection Considerations

1. Conductor Cross-Section

The required cross-section should be determined from the electrical load, circuit function, allowable conductor resistance and applicable installation requirements. The available data covers nominal cross-sections from 0.5mm² to 6mm².

2. Core Quantity

Core quantity should correspond to the number of control, alarm, monitoring and auxiliary circuits to be carried. The table lists recommended core configurations through 61 cores, with custom core quantities available according to the supplied specification.

3. Flexibility and Installation Route

Where cables must pass through control cabinets, trays or equipment connections, conductor construction and allowable bending conditions should be considered together. The required bending radius should be confirmed from the applicable cable specification rather than assumed from conductor type alone.

4. Fire-Resistance Requirements

Fire-resistant cables should be selected according to the required test duration, fire exposure conditions and system standard. A cable should not be specified only by the term “fire resistant”; the required performance classification and supporting test documentation should also be confirmed.

Quality and Technical Verification

For project procurement, the main verification points include conductor material and construction, nominal cross-section, conductor resistance, mica-tape configuration, PVC insulation thickness and finished-cable dimensions. These measurable characteristics provide a practical basis for comparing the supplied cable with the agreed technical specification.

For export or engineering orders, Qiancheng can coordinate the required product documentation according to the cable specification and project requirements. If a specific fire-resistance test report, certificate or inspection document is required, it should be identified before order confirmation so that the applicable documentation can be checked against the actual cable configuration.

FAQ

What is the rated voltage of this Copper PVC Fire Resistant Control Cable?

The rated voltage is 450/750V. It is intended for control, monitoring and auxiliary circuits where the specified fire-resistant construction is required.

What material provides the fire-resistant function?

Mica tape is used as the fire-resistant layer around the conductor. Its function is to help maintain electrical insulation and circuit continuity under the specified fire-test conditions.

What conductor sizes are covered by the specification table?

The table covers nominal cross-sections from 0.5mm² to 6mm², with corresponding conductor configurations, PVC insulation thickness and 20℃ DC conductor resistance values.

How many cores can be configured?

The listed recommended core numbers are 2, 3, 4, 5, 7, 8, 10, 12, 14, 16, 19, 24, 27, 30, 37, 44, 48, 52 and 61. Custom core quantities can be discussed according to the project specification.

Where can this Copper PVC Fire Resistant Control Cable be used?

It can be applied in fire-protection control systems, power-plant control circuits, metallurgical equipment, building mechanical and electrical systems, wastewater-treatment equipment and other industrial control applications where fire-resistant cable construction is required.

What information should be provided for a project quotation?

For specification confirmation, it is useful to provide the required model, conductor cross-section, core quantity, cable length, installation environment, fire-resistance requirements and any required technical documents or inspection records.