Computer/Instrument Cable——ZR-DJYPV

Flame-retardant, Copper-core, Polyethylene Insulated, Overall Screened (Shielded), PVC Sheathed Computer/Instrument Cable.Mainly used in situations where high anti-interference performance is required, and for transmitting weak signals, control signals or data signals.

I.Structural Features

Conductor: Copper core (typically annealed bare copper or tinned copper).

Insulation: Polyethylene (PE) insulation provides excellent transmission performance.

Twisted Pairs: Multiple pairs of wires are typically twisted together in pairs (DJ) to suppress crosstalk between pairs.

Shield (P): An overall shield (such as copper tape or aluminum-plastic composite tape) is added after all pairs are assembled to provide additional protection against external electromagnetic interference.

Jacket (V): Polyvinyl chloride (PVC) flame-retardant jacket provides mechanical protection and flame retardancy.

Rated Voltage: Common rated voltages are 300/500V or 450/750V

II.Main Applications

The ZR-DJYPV cable is primarily used in environments that demand high anti-interference performance for transmitting weak signals, control signals, or data:

Industrial Automation Systems (DCS/PLC): Used for connecting field instruments, sensors, and actuators to the central control room for signal transmission.

Electronic Computer Systems: Used as connecting cables within computer networks and control systems.

Measurement and Control Instrumentation: Suitable for various detection equipment and instruments that require highly reliable signal transmission.

Fixed Indoor Installations with Fire Safety Requirements: Due to the ZR designation (Flame Retardant), it is commonly used in places like high-rise buildings, petrochemical plants, power stations, and other environments where fire safety is a critical concern.

III.Advantage

Excellent Anti-Interference Performance (High Transmission Quality)

·Twisted Pair Structure (J): The core conductors are twisted into pairs, which effectively suppresses electromagnetic induction and signal crosstalk between the cores, ensuring clarity of signal transmission.

·Overall Shielding Structure (P): The cable includes an overall shield (such as copper tape, aluminum-plastic composite tape, or copper braid) over all the twisted pairs. This effectively resists external electromagnetic interference (EMI) and radio frequency interference (RFI) from sources like power lines or large equipment.

·Suitability: This dual anti-interference design makes it particularly suitable for industrial automation, computer control, and precision instrumentation applications where signal integrity and noise immunity are critical.

Superior Electrical Performance and Long Service Life

·Polyethylene Insulation (Y): Polyethylene (PE) is used as the core insulation material. PE features:

High Insulation Resistance: Reduces signal leakage.

Low Dielectric Constant and Low Dissipation Factor: This means less signal attenuation and distortion during transmission, better meeting the requirements for data transmission performance.

·Long Service Life: PE insulation and PVC sheathing materials typically exhibit good aging resistance, ensuring a long operational lifespan for the cable.

Enhanced Fire Safety

·Flame Retardant Property (ZR): The ZR in the model indicates Flame Retardant, meaning the outer sheath and/or insulation layers contain flame retardants. When exposed to a fire source, the cable restricts the spread of the flame and self-extinguishes once the fire source is removed.

·Improved Safety: This is vital for installations in crowded areas, equipment-intensive locations, or sites with high fire safety requirements (e.g., high-rise buildings, factory control rooms, tunnels, etc.).

Good Mechanical and Chemical Protection

·PVC Sheath (V): The outer jacket uses PVC material, offering:

Good Mechanical Protection: Resistance to abrasion and crushing.

Chemical Resistance: Provides a certain degree of resistance to common chemicals like acids, alkalis, and oils.

·Ease of Installation: PVC sheaths generally provide flexibility, allowing the cable to have a relatively small bending radius for fixed installations, which simplifies the installation process.