KVVR Cable
What is KVVR Cable?
KVVR cable is a specialized type of flexible copper control cable designed for fixed installations in environments where space is limited and regular movement or vibration occurs. The "K" signifies control cable, "V" stands for PVC insulation, the second "V" indicates PVC sheathing, and "R" denotes the flexible or stranded conductor design. This construction makes it an ideal solution for connecting electrical control circuits, instrumentation systems, and automation equipment within control cabinets, machine tools, and various industrial settings.
Key Features and Applications
KVVR cable is engineered for reliability in demanding conditions. Its primary characteristics include excellent flexibility, which simplifies installation in tight spaces and around corners, and good resistance to oils, acids, alkalis, and moisture. The PVC sheath provides a durable protective layer against abrasion and general mechanical stress.
Typical applications include:
- Wiring inside electrical control cabinets and switchgear.
- Connections for instrumentation, sensors, and measurement devices.
- Power and control circuits for machine tools, conveyor systems, and assembly lines.
- Automation systems and process control wiring.
- Installation in dry, damp, or indoor industrial environments.
Technical Specifications and Parameters
The performance of KVVR cable is defined by a set of precise technical parameters that ensure safe and efficient operation. Below are the standard specifications.
Construction & Materials
- Conductor: Bare copper, finely stranded (Class 5 per IEC 60228) for high flexibility.
- Insulation: Polyvinyl Chloride (PVC).
- Core Identification: Color-coded insulation (e.g., black with numbered print or solid colors).
- Sheath/Jacket: Polyvinyl Chloride (PVC), typically gray.
Electrical & Mechanical Properties
| Parameter | Specification / Typical Value |
|---|---|
| Rated Voltage (U0/U) | 300/500 V |
| Test Voltage | 2000 V, 50 Hz, 5 minutes |
| Operating Temperature Range | -15°C to +70°C |
| Minimum Bending Radius | 4 x Cable Diameter (Fixed Installation) |
| Flame Retardancy | According to IEC 60332-1 |
Standard Cross-Sectional Areas & Configurations
KVVR cable is available in various core counts and conductor sizes to suit different circuit requirements.
| Number of Cores | Nominal Cross-Sectional Area (mm²) | Approximate Overall Diameter (mm) |
|---|---|---|
| 2 | 0.75, 1.0, 1.5, 2.5 | 6.0 - 9.0 |
| 4 | 0.75, 1.0, 1.5, 2.5 | 7.0 - 10.5 |
| 7 | 0.75, 1.0, 1.5 | 8.5 - 11.5 |
| 10 | 0.75, 1.0 | 10.0 - 12.0 |
| 14 | 0.75, 1.0 | 11.5 - 13.5 |
| 19 | 0.75, 1.0 | 13.0 - 15.0 |
| 24 | 0.75, 1.0 | 14.5 - 16.5 |
Standards and Compliance
High-quality KVVR cable is manufactured in compliance with international and national standards to guarantee performance and safety. Key standards include:
- GB/T 9330-2020: Chinese national standard for control cables.
- IEC 60227: International standard for PVC insulated cables.
- IEC 60228: Conductors of insulated cables.
It is crucial to verify that the cable supplier provides products with full test reports and certificates of conformity to these standards, ensuring reliability for your industrial applications.
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