What kind of cable is KVVPR?
In the fields of electrical engineering and automation control, cable selection is crucial. As a special control cable, KVVPR cable is widely used in industrial environments. This article will introduce the definition, structure, characteristics and application scenarios of KVVPR cable in detail, and attach relevant data tables so that readers can understand its performance parameters more intuitively.
1. Definition of KVVPR cable
KVVPR cable is a copper core PVC insulated PVC sheathed braided shielded control flexible cable. The letters in its name have the following meanings:
| letters | meaning |
|---|---|
| K | control cable |
| V | PVC insulation |
| V | PVC sheath |
| P | Copper braided shield |
| R | Flexible cable construction |
2. Structure of KVVPR cable
KVVPR cable consists of multiple parts, each with its specific function:
| components | Material | Function |
|---|---|---|
| conductor | Multiple strands of thin copper wire | transfer current |
| insulation layer | Polyvinyl chloride (PVC) | Isolate conductors to prevent short circuits |
| shielding layer | Braided copper wire | Anti-electromagnetic interference |
| sheath | Polyvinyl chloride (PVC) | Protect cables from mechanical damage |
3. Characteristics of KVVPR cable
KVVPR cables have the following salient properties that make them popular in industrial environments:
| Features | Description |
|---|---|
| Softness | Stranded thin copper wire conductors make the cable easy to bend and install |
| Immunity to interference | Copper wire braided shield effectively resists electromagnetic interference |
| Corrosion resistance | PVC sheath has good acid, alkali and oil resistance |
| Temperature resistance | Operating temperature range is typically -15°C to 70°C |
4. Application scenarios of KVVPR cable
KVVPR cables are widely used in the following fields:
| Application areas | Specific use |
|---|---|
| Industrial automation | Connect devices such as PLCs, sensors and actuators |
| power system | Control circuits for substations and distribution cabinets |
| Instrumentation | Transmits low-level signals to ensure signal accuracy |
| rail transit | Train control systems and signaling |
5. Technical parameters of KVVPR cable
The following are the typical technical parameters of KVVPR cables:
| parameters | numerical value |
|---|---|
| Rated voltage | 300/500V |
| Conductor cross-sectional area | 0.5-10mm² |
| Conductor resistance | ≤7.41Ω/km (take 0.5mm² as an example) |
| Insulation resistance | ≥1MΩ·km |
| Minimum bending radius | 6 times cable outer diameter |
6. Precautions when purchasing KVVPR cables
When purchasing KVVPR cables, you should pay attention to the following points:
1.Conductor material: Make sure the conductor is oxygen-free copper to ensure conductive performance.
2.shielding effect: Check the copper wire braiding density, which should usually reach more than 80% coverage.
3.Sheath quality: PVC sheathing should be uniform and flawless, with good flexibility and wear resistance.
4.Certification standards: The cable should comply with GB/T 9330-2008 or other relevant international standards.
5.Usage environment: Select the appropriate cable model based on the actual ambient temperature, humidity and presence of corrosive substances.
7. Installation and maintenance of KVVPR cable
Proper installation and maintenance extend the service life of KVVPR cables:
1.Installation: Avoid excessive bending. The minimum bending radius should be no less than 6 times the outer diameter of the cable.
2.Fixed: Use special cable clamps to fix the cables to prevent them from being worn due to vibration.
3.ground: The shielding layer needs to be grounded at one end to avoid forming a ground loop.
4.maintenance: Regularly check whether the cable sheath is damaged and whether the shielding layer is intact.
8. Summary
KVVPR cable has become an important cable in the field of industrial control due to its excellent flexibility, anti-interference and environmental resistance. By understanding its structure, characteristics and application scenarios, users can select and install the cable more rationally to ensure the stable operation of the electrical system. When purchasing, be sure to pay attention to the quality standards and actual usage requirements of the cable to maximize its performance.
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