XLPE Insulated Multicore Instrumentation Cable for Automation & DCS Control System 450/750V

WDZ-KYJRP is a low-smoke halogen-free shielded control cable rated at 0.45/0.75kV, specifically developed for signal transmission, instrument interconnection, and PLC/DCS cabinet control cabling in fire-sensitive industrial and municipal engineering applications.

• WDZ: Low-smoke halogen-free; insulation, filler, and outer sheath are all made of halogen-free environmentally friendly polymers, free of halogen-containing PVC materials;
• K: Control cable; multi-core tightly stranded structure, used for fixed installation of secondary circuit signals and control loops;
• YJ: Single-core conductor with XLPE cross-linked polyethylene insulation;
• R: Flexible Category 5 stranded copper conductor with excellent bending performance, suitable for compact cabling within cabinets;
• P: Overall copper tape-wrapped shielding layer, effectively suppressing external electromagnetic interference to weak current signals.

Unlike commonly available KVV control cables and unshielded KYJ cables, this product integrates low-smoke halogen-free (LSZH) fire safety performance, flexible conductor layout, and full shielding design. It emphasizes weak signal interference immunity and fire safety protection, and is widely specified by industrial engineering contractors in automation design institutes, petrochemical EPC, thermal power, and new energy industries for secondary control circuit construction. Its core structure consists of multiple single-insulated cores twisted together, protected by full shielding and a low-smoke halogen-free (LSZH) outer sheath.

• Rated U0/U Working Voltage: 0.45/0.75kV, compatible with industrial DCS, PLC, and instrument secondary control circuit systems;
• Conductor Long-Term Allowable Continuous Operating Temperature: 90℃ under rated operating conditions;
• Short-Circuit Withstand Temperature (5-second short-circuit instantaneous): Maximum 250℃;
• Factory Standard Power Frequency Withstand Voltage Test: Finished single-core wire 2.5kV/5min without insulation breakdown;
• Shielding Performance Parameters: Copper tape overlap winding rate ≥95%, stable shielding attenuation, reducing crosstalk between adjacent signal cores.

• Conductor Standard: Category 5 fine stranded annealed copper conductor conforming to IEC60228 and GB/T3956 standards, featuring high flexibility and suitable for frequent bending within cabinets;
• Conductor Single Core Cross-Section Range: 0.5mm², 0.75mm², 1.0mm², 1.5mm², 2.5mm² standard in-stock specifications; 4.0/6.0mm² extra-large single cores can be customized according to drawings;
• Core Count Configuration: Standard core count 2~61 cores (2/3/4/5/7/8/10/12/14/16/19/24/30/37/44/48/52/61 cores), non-standard odd-numbered core counts can be customized according to project design;
• DC Resistance Testing: The conductor's DC resistance at 20℃ is strictly controlled below the national and IEC standard upper limits to avoid excessive voltage drop during weak signal transmission.

• Core Insulation: High-purity cross-linked polyethylene (XLPE) insulation with uniform wall thickness, good insulation stability, and excellent resistance to electrical aging;
• Halogen-Free Flame-Retardant Filler: Environmentally friendly low-smoke halogen-free (LSZH) filler fills the gaps between the core wires, standardizes the cable outer diameter, and improves the overall flame-retardant integrity of the bundled installation;
• Overall Shielding Layer: Tinned copper tape spirally overlapped and wound for high shielding density, effectively suppressing interference from high-voltage power cables and frequency converters on spatial electromagnetic radiation;
• Outer Sheath: Modified anti-aging low-smoke halogen-free (LSZH) outer sheath, with added UV resistance and moisture-proofing agents, exhibiting stable performance in humid indoor and slightly corrosive air environments.

• Minimum ambient temperature for fixed installation: ≥0℃;
• Minimum bending radius: ≥10 times the outer diameter of the finished cable, providing excellent bending performance and facilitating corner cabling in server racks;
• Suitable for general installation altitudes ≤3000m. For high-altitude industrial projects above 3000m, a low-pressure resistant insulation formula can be customized.

• LSZH Low Smoke Halogen-Free Fireproof Safety Performance: Passes GB/T19666 WDZ flame retardant test, with low smoke density and smoke transmittance ≥70% during combustion, and does not release corrosive halogen gases, effectively protecting precision control instruments from gas corrosion in building fires;
• Full Copper Tape Shielding Anti-Interference Performance: ≥95% copper tape coverage effectively isolates electromagnetic interference generated by nearby high-power motors, frequency converters, and medium-voltage power lines, ensuring stable transmission of analog and switching signals in the DCS system without signal drift;
• Class 5 Flexible Conductor Layout: Finely stranded flexible copper cores are suitable for wiring in narrow spaces inside PLC cabinets, terminal cabinet bends, and wiring structures, reducing the risk of core breakage during on-site installation;
• XLPE Insulation Electrical Stability: Low dielectric constant and small distributed capacitance effectively reduce signal distortion during long-distance instrument signal transmission;
• Optimized Environmentally Friendly Anti-Aging Outer Sheath: Improved LSZH The formula is resistant to indoor moisture and industrial trace volatile gases, and its designed service life can reach 25 years under normal indoor fixed installation conditions.

• Full-Layer Halogen-Free Upgrade: Traditional KVVP uses halogen-containing PVC insulation and sheathing, which releases toxic and corrosive fumes when burned; WDZ-KYJRP uses LSZH composite materials for all non-conductive layers, fully complying with fire safety acceptance standards for petrochemical, power plant, and Class I fire-resistant industrial buildings;
• Optimized Bundling Flame-Retardant Design: Special flame-retardant fillers improve the overall fire resistance when dozens of control cables are densely laid in the cable tray, preventing the spread of fire along the control wiring channel;
• Customized and Flexible Production Mechanism: Supports small-batch, short-length trial orders, and customized production of irregular core numbers and mixed cross-sections, reducing inventory waste for project purchasers;
• Online Full-Process Quality Monitoring: The automated extrusion production line has online insulation thickness and shielding coverage detection functions. Smoke density and shielding effectiveness sampling tests are conducted on each batch of finished products before shipment.

• Petrochemical and Refining Intelligent Transformation Projects: Interconnection of DCS cabinets in refinery workshops, signal transmission from field sensors to the control room, centralized laying of indoor cable trenches; strict fire prevention and electromagnetic interference resistance are mandatory technical clauses in the project bidding documents.
• Thermal Power and Cogeneration Unit Auxiliary Systems: Boiler auxiliary equipment instrument wiring, PLC control loop connection in water treatment room, internal wiring of central control room cabinets, centralized laying of enclosed control buildings.
• New Energy Wind and Photovoltaic Substations: Substation secondary equipment control wiring, inverter room instrument signal transmission, internal control cable laying of box-type substations.
• Urban Waste Incineration and Environmental Protection Plants: Incinerator field monitoring instrument wiring, automated control circuits for flue gas treatment equipment, indoor wiring in high-fire-risk industrial workshops.
• Intelligent Buildings and Underground Integrated Pipe Gallery: Pipe gallery environmental monitoring sensor wiring, building intelligent control system signal transmission, centralized control wiring in enclosed spaces, meeting strict fire prevention requirements.

• Mixed Laying with Power Cables: When WDZ-KYJRP cables are mixed with high-voltage power cables in the same cable tray, maintain a horizontal spacing of ≥30cm to reduce electromagnetic coupling interference. For long-distance signal cabling exceeding 80m, fully shielded cables are recommended.
• Dense Cabling in Enclosed Control Rooms: Flexible R-type conductors must be used in environments with dense cabinet cabling to allow for bending within confined cabinet spaces.
• Workshops with High Temperatures and Trace Corrosive Gases: In petrochemical production areas, a customized version with enhanced low-smoke halogen-free (LSZH) sheaths can be selected to extend cable life.
• Class I Fire-Resistant Industrial Buildings: All indoor control main circuits must use WDZ-KYJRP cables to meet local fire department acceptance standards. Unshielded ordinary control cables are prohibited in core signal circuits.

• Raw Material Qualification Verification: Before signing bulk orders, suppliers must provide third-party testing reports for low-smoke halogen-free (LSZH) raw materials and copper certification to confirm that no inferior recycled raw materials are mixed into the finished cables;
• Pre-shipment Third-Party Sampling Agreement: Include random sampling inspection clauses in the sales contract, allowing the buyer to designate a local authorized laboratory to test shielding effectiveness, smoke density, and flame retardant performance before container shipment;
• Pre-order Parameter Matching Consultation: Submit the project's instrument wiring diagram and installation environment to our technical team. Our professional control cable engineers will optimize the selection of conductor quantity and cross-sectional dimensions to avoid on-site rework due to incorrect procurement specifications.
• Delivery Schedule: Standard mainstream conductor specifications are readily available in our factory, with fast delivery within 7-30 working days. For non-standard customized specifications, the conductor quantity needs to be confirmed during the pre-negotiation stage to coordinate with the project's construction schedule.
• Export Packaging Optimization: Export-standard control cables are packaged in moisture-proof plastic reels and wooden pallets. Our logistics team optimizes container stacking layout to improve container utilization and reduce unit sea freight costs for bulk importers.

• Domestic Standards: GB/T9330 National Standard for Control Cables, GB/T19666 Specification for Flame-Retardant Low-Smoke Halogen-Free Cables;
• International Standards: Manufactured according to the core clauses of IEC60228, IEC60502, IEC60332, and IEC61034, conforming to mainstream electrical access standards in Southeast Asia, the Middle East, Central Asia, and Africa;
• Complete Certifications: CCC Compulsory Product Certification, Fire Protection Product Type Approval Certificate, CNAS Accredited Laboratory Test Report, ISO9001 Quality Management System Certification, and ISO14001 Environmental Management System Certification, as well as a complete set of English certification documents for preparing tender documents;
• Customs Clearance Assistance: Assisting the buyer in issuing certificates of origin and customs support documents to expedite customs clearance at the destination port.

• Professional Control Cable Technical After-Sales Team: Equipped with senior electrical engineers specializing in instrumentation and secondary circuits, providing free pre-order specification selection advice based on automation drawings and offering remote online construction technical consultation to on-site engineering teams;
• Full-Process Traceable Quality Management: Each roll of product has a unique batch tracking code, covering raw material incoming inspection, online production monitoring, and finished product sampling inspection, facilitating quality traceability during project acceptance;
• Diverse International Trade Cooperation Terms: Supports multiple settlement methods including FOB/CIF/CFR, offering a dual cooperation plan of small trial orders and annual long-term framework contracts. Long-term contracted clients enjoy tiered bulk purchase discounts;
• Stable Inventory and Logistics Deployment: Regularly updated core specifications, real-time factory inventory information, and collaboration with multiple international freight forwarders to develop cost-effective transportation solutions, avoiding delivery delays caused by port congestion;
• Flexible Production Capacity Reserved: Reserved production line capacity for long-term engineering partners to quickly respond to unexpected emergency replenishment needs during the later stages of project construction.