Rated AC Voltage up to 600 V Low-Smoke Zero-Halogen Low-Toxicity Flame Retardant Marine Communication and Instrumentation Cable

Executive Standards
This product is manufactured and tested in strict accordance with advanced enterprise standards and industry technical specifications:
- Q/320481SS038.3-2022: Core execution standard for low-smoke zero-halogen low-toxicity flame retardant communication and instrumentation cables for ships.
- It also references relevant general specifications of the International Electrotechnical Commission (IEC) concerning cables for shipboard communication and instrumentation circuits.

Model Code Definitions
The model codes for marine signal cables consist of a combination of designations reflecting the material and function, with the main codes as follows:
- J: Series code, denoting marine/navy use.
- H: Function code, denoting communication, instrumentation, and electronic computer systems.
- YJ: Insulation material, representing cross-linked polyethylene (XLPE) insulation.
- P / JP: Shielding code. P – copper wire braided shield; JP – specific type of pair shield or overall shield construction.
- J: Sheath code, indicating low-smoke zero-halogen flame retardant polyolefin sheath material.
- SZP / PSZP: Represent specific combinations of high-coverage electromagnetic shielding and protective layers.

Common model examples:
- SC type (standard flame retardant): JHYJ85, JHYJP85, JHYJPJ, JHYJPJP.
- NC type (fire-resistant/high flame retardant): JHYJPJSZP, JHYJPJPSZP.

Product Specification Range
The conductor uses high-quality annealed copper wire, with specification designs accurately covering the requirements of weak signal transmission and high-speed data exchange:
1. Single-core specifications: (2–44) cores × (0.35–1.0) mm²
2. Pair group specifications (twisted pairs): (1–77) pairs × 2 × (0.35–1.0) mm²
3. Triad group specifications: (3–44) groups × 3 × (0.35–1.0) mm²

Core Technical Parameters
1. Rated voltage (U₀/U): 600 V or 250 V.
2. Operating temperature: The maximum continuous permissible conductor operating temperature is up to 90°C, ensuring performance stability in high-temperature engine room environments.
3. Electrical performance: The cable exhibits very low dielectric loss and strong insulation resistance, ensuring loss-free transmission of weak signals over long distances.
4. Bending radius: Compact and flexible construction, accommodating the narrow and winding wiring paths on ships.

Product Structural Characteristics
- Multiple precision shielding: Options include individual pair shielding, overall shielding, or "individual pair + overall" shielding construction. A high-coverage copper wire braid effectively suppresses internal crosstalk and external high-frequency electromagnetic interference, ensuring communication accuracy.
- High-performance XLPE insulation: Cross-linked polyethylene insulation not only raises the temperature rating of the cable but also gives it outstanding physical and mechanical strength and electrical stability.
- Safe and environmentally friendly protective layer: The sheath material is halogen-free, with high light transmittance during combustion and very low gas corrosivity, protecting silver-plated or gold-plated connectors and sensitive circuits in equipment rooms from acidic fume corrosion.

Applicable Scenarios
- Ship communication networks: Telephone exchange systems, public address, and internal command transmission.
- Automated monitoring circuits: Engine room parameter monitoring, navigation systems, and radar signal connections.
- Digital control systems: DCS system connections, PLC connections, and signal acquisition from various sensors.
- Offshore platform systems: Interconnection of precision instruments on oil drilling platforms and inside offshore wind turbine towers.

Safety and Reliability Assurance
This cable series has been optimized for extreme marine environments. It features strong resistance to salt spray, mold, moisture, and vibration fatigue, maintaining physical integrity of signal transmission under extremely harsh sea conditions. Through rigorous low-toxicity and smoke density testing, the product fully meets the high-standard requirements of modern green shipbuilding for personnel safety and environmental protection.