300/500V Flame-Retardant Double-Shield Computer Control Cable
Core Structure: Solid twisted copper pairs + low-capacitance XLPE insulation + individual pair copper shield + full overall copper braided shield + ZR flame-retardant PVC sheath.
Core Performance: Dual-layer anti-electromagnetic interference, anti-signal crosstalk, flame retardant, low signal attenuation for precision weak signal transmission.
Application Scenarios: DCS/PLC industrial automation, multi-channel sensor wiring, fire-risk chemical & power plant workshops.
Environmental Resistance: Resists indoor moisture, dust and light oil for long-term fixed laying.
Compliance: Fully meets GB/T 9330 & IEC international standards for flame-retardant double-shielded computer control cables.
Product Introduction
This multi-group double-shielded flame-retardant computer signal cable (ZR-DJYPVP 7×3×1.5) is dedicated to high-precision weak signal transmission for industrial DCS distributed control systems and PLC automation equipment, rated at 300/500V. It consists of 7 sets of 3-core differential twisted pairs, adopts low-capacitance XLPE insulation, independent copper braided shielding for every twisted pair plus full copper braided overall shielding, and flame-retardant PVC outer sheath. The dual-layer shielding structure effectively suppresses internal signal crosstalk and external electromagnetic interference from inverters, motors and high-voltage cabinets, while the flame-retardant formula prevents flame spread, making it the ideal wiring solution for chemical plants, power plants and other fire-risk industrial workshops.
product key technologies
1.Solid oxygen-free copper twisted differential signal pairs
2.Low-capacitance XLPE insulation for individual conductors
3.Independent copper wire braided shielding layer for each twisted pair
4.Isolation wrapping tape for separating each signal group
5.Dense copper wire braided overall total shielding layer
6.ZR flame-retardant PVC outer protective sheath
- Solid Copper Twisted Pairs：Differential twisted pair layout counteracts internal electromagnetic coupling interference and eliminates signal crosstalk between multi-channel monitoring loops; high-purity solid copper ensures stable low-resistance transmission of analog/digital signals from temperature, pressure and flow transmitters without signal attenuation.
- XLPE Core Insulation Layer：Cross-linked polyethylene features ultra-low dielectric constant and stable capacitance, avoiding waveform distortion and phase shift during long-distance signal transmission. It supports continuous 90°C operating temperature with outstanding heat aging resistance compared to conventional PVC insulation.
- Independent Pair Copper Braided Shield：Every signal pair is wrapped with a separate copper mesh shield, completely isolating mutual interference between different signal loops and guaranteeing measurement accuracy of parallel multi-channel sensor circuits.
- Group Isolation Wrapping Tape：Separates independent signal groups to reduce cross-coupling interference inside the cable and maintain neat internal core layout.
- Copper Braided Overall Total Shield：Secondary full copper shielding forms a double anti-interference barrier, fully blocking external EMI/RFI noise generated by heavy industrial electrical equipment.
- ZR Flame-Retardant PVC Outer Sheath：Flame-retardant PVC compound limits flame propagation under short-circuit ignition conditions, and provides daily protection against indoor dust, moisture and light oil splashes for all inner shielding and core structures.
Key Advantages
- Dual-Layer Full Shielding Anti-Interference Design: Separate pair shield + overall total shield delivers top-tier noise suppression performance for high-electromagnetic-noise industrial environments.
- Twisted Pair Anti-Crosstalk Layout: Differential twisting eliminates signal interference between multi-channel parallel monitoring circuits, ensuring high-fidelity weak signal transmission.
- Flame-Retardant Safety Performance: ZR flame-retardant outer sheath inhibits flame spread, lowering fire hazards in chemical, petrochemical and power production workshops.
- Low-Capacitance XLPE Insulation: Stable capacitance avoids signal distortion over long-distance wiring, perfectly matched with industrial DCS/PLC input modules.
- 7-Group Multi-Channel Integrated Layout: Consolidates multiple independent signal loops into one cable, simplifying cabinet wiring and reducing construction material & labor costs.
- International Standard Compliance: Strictly produced in accordance with GB/T 9330 and corresponding IEC standards for flame-retardant computer control cables.
What Are the Product Application Scenarios?
- DCS distributed control systems for thermal power plants, chemical factories and metallurgical workshops
- PLC automation signal wiring for manufacturing plants equipped with numerous inverters and large motors
- Connection cables for industrial temperature, pressure, liquid level and flow transmitters
- Automatic monitoring control loops of petrochemical, chemical and other fire-risk production workshops
- Precision testing equipment and laboratory weak signal transmission circuits
- Multi-channel monitoring wiring for environmental protection water treatment projects
Why Choose Shaanxi Jinshenghong Cable
Complete batch testing of shielding attenuation, flame retardancy, insulation capacitance and impedance before shipment to verify anti-interference and fire safety performance.
Adopts 100% high-purity oxygen-free copper and imported low-capacitance XLPE raw materials without recycled inferior fillers.
Customizable solutions: ZA/ZB/ZC higher flame retardant grades, WDZ low smoke zero halogen LSZH version, optional more signal groups and larger cross-sections.
Sufficient inventory and stable global logistics support fast delivery for automation engineering contractors and equipment manufacturers worldwide.
Professional technical team provides targeted anti-interference wiring schemes for fire-risk industrial production lines.
Thoughtful service - worry free after-sales service
Global logistics
Provide global express and sea freight services, door-to-door, worry free and convenient.
Explanation: Our professional engineering team provides selection and technical support to answer your questions and clarify any doubts.
Provide comprehensive quality assurance and after-sales policies to ensure worry free procurement for you.
FAQ
Q1: What does ZR-DJYPVP stand for?
A: ZR = general flame retardant; DJ = computer control cable; YJ = XLPE insulation; P = independent copper braided shield for each twisted pair; VP = full copper braided overall total shield.
Q2: What is the difference between DJYPVP double-shield cable and single-shield DJYVP cable?
A: DJYPVP adds separate shielding for every twisted signal pair, thoroughly eliminating crosstalk between different signal loops, suitable for multi-channel parallel precision analog signal transmission in strong interference factories; DJYVP only has an overall outer shield, only applicable to simple single-loop control circuits.
Q3: What flame retardant grade does ZR belong to?
A: ZR is general Class C flame retardant; we also supply ZA/ZA higher flame retardant grades for high fire protection requirement projects.
Q4: Can this cable be laid outdoors exposed to sunlight and rain?
A: Standard PVC sheath is only for indoor fixed laying; customized UV-resistant outer sheath version is required for open-air outdoor installation.
Q5: What is the rated voltage of this computer signal cable?
A: Rated voltage 300/500V, specially designed for low-voltage weak signal control circuits, not applicable for heavy-load main power transmission.
Q6: Do you supply low smoke zero halogen flame-retardant DJYPVP cables for public buildings?
A: Yes, we produce complete WDZ-A/B/C series LSZH double-shield computer cables for subway, hospital, school and high-rise building projects.
Our address
West of Sanqiao Street Office, Weiyang District, Xi'an City, Shaanxi Province, adjacent to Fortune Building
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