NAYRY-J/O Cable
The NAYRY-J/O Cable is a heavy-duty 0.6/1kV low-voltage power distribution cable engineered for reliable fixed installation across energy supply networks, industrial facilities, and municipal mains. Manufactured in compliance with DIN VDE 0276-603 (HD603) and HD 308 S2 standards, this multi-layer power cable incorporates Class 2 stranded aluminium conductors (available in round RM or sector-shaped SM profiles), high-grade Polyvinyl Chloride (PVC) insulation, a protective plastic inner tape wrapping, a robust Galvanized Steel Wire Armour (SWA) layer, and a UV-resistant PVC outer sheath.
What is NAYRY-J/O Cable?
The NAYRY-J/O Cable is a low-voltage 0.6/1kV armoured power cable specifically designed for heavy-duty power distribution in power stations, industrial plants, switchgears, and local electricity networks. Built strictly to DIN VDE 0276-603 (HD603) and HD 308 S2 specifications, it provides dependable electrical transmission under harsh operational conditions.
Featuring Class 2 stranded aluminium conductors combined with Galvanized Steel Wire Armour (SWA), the NAYRY-J/O cable offers high tensile strength and physical durability. Its SWA layer absorbs external impact and severe mechanical loads, enabling safe long-term deployment in subterranean environments, cable ducts, and outdoor infrastructure without risk of mechanical damage.
NAYRY-J/O Cable Construction
- Conductor: Class 2 round stranded aluminium (RM) or Class 2 sector-shaped stranded aluminium (SM) per DIN VDE guidelines.
- Insulation: Polyvinyl Chloride (PVC) compound rated for continuous operation at +70°C.
- Bedding / Inner Sheath: Plastic Tape layer applied over the assembled cores.
- Armour Layer: Galvanized Steel Wire Armour (SWA) providing heavy-duty physical and mechanical protection.
- Outer Sheath: UV-resistant Polyvinyl Chloride (PVC) compound, flame retardant per EN 50265-2-1 and IEC/EN 60332-1.
- Core Identification: 3 Cores + Earth: Brown, Black, Grey, Green/Yellow (Available without earth as NAYRY-O upon request).
- Sheath Colour: Black.
Applications
NAYRY-J/O cables are engineered for main power lines and distribution systems where mechanical impact protection and UV resistance are required. Their SWA construction and rugged PVC sheath ensure reliable service in direct-burial and outdoor installations.
Typical installation environments include:
- Direct Underground Burial: High resistance to soil pressures, impact during backfilling, and mechanical stress.
- Power Stations & Switchgears: Fixed power supply lines inside industrial facilities, sub-stations, and local energy mains.
- Cable Ducts & Trays: Interior premises and covered cable channels requiring structured cable laying.
- Open Air & Aquatic Environments: Protected against direct sunlight UV degradation and fixed installation in water.
Specifications & Dimensions
The NAYRY-J/O cable series covers standard core cross-sections from 35mm² to 240mm² with reduced neutral/earth conductor sizes. Temperature rating spans from -50°C to +70°C with a minimum laying temperature of -5°C and short-circuit capability of +160°C. Complete dimensional data including nominal diameters, weights, current carrying capacities in air/ground, and conductor resistances at 20°C strictly align with DIN VDE 0276-603 manufacturing standards.
| No. of Cores | Nominal Cross Sectional Area (mm2) | Conductor Type | Nominal Overall Diameter (mm) | Nominal Weight (kg/km) |
| 3+1 | 35+16 | SM/RM | 31.0 | 1460 |
| 3+1 | 50+25 | SM/RM | 35.7 | 1910 |
| 3+1 | 70+35 | SM/RM | 39.6 | 2460 |
| 3+1 | 95+50 | SM/RM | 46.0 | 3035 |
| 3+1 | 120+70 | SM/RM | 49.0 | 3785 |
| 3+1 | 150+95 | SM/RM | 54.5 | 4610 |
| 3+1 | 185+95 | SM/RM | 59.8 | 5425 |
| 3+1 | 240+120 | SM/RM | 68.9 | 6575 |
Standards
Huadong Cable Group manufactures and batch-tests NAYRY-J/O cables to guarantee compliance with European and international power cable standards:
Design Standards: DIN VDE 0276-603 (HD603), HD 308 S2
Flame Retardancy: EN 50265-2-1, IEC/EN 60332-1
Voltage Rating (Uo/U): 0.6/1kV (Test Voltage: 4kV/50Hz)
Temperature Spectrum: Laying min -5°C; Operating -50°C to +70°C; Short Circuit +160°C
Regulatory Compliance: Construction Products Regulation EN 50575 (CPR Compliant), Low Voltage Directive 2014/35/EU, RoHS 2015/65/EU, REACH EC 1907/2006, CE
Frequently Asked Questions
Q: What is the primary difference between NAYRY-J and NAYRY-O cable variants?
A: The NAYRY-J variant includes a green/yellow protective earth conductor within the core assembly, whereas the NAYRY-O variant is manufactured without an earth core upon customer request.
Q: What mechanical protection does Galvanized Steel Wire Armour (SWA) provide?
A: SWA provides high tensile strength and crushing resistance, protecting the cable against subterranean mechanical hazards, impact during backfilling, heavy ground displacement, and accidental physical damage.
Q: What is the minimum bending radius for NAYRY-J/O cable during installation?
A: The minimum bending radius for NAYRY-J/O cable is 15 times the nominal overall diameter of the cable.
Q: What payment terms does Huadong Cable Group accept for international supply contracts?
A: We accept Telegraphic Transfer (T/T) and Irrevocable Letter of Credit (L/C) at sight for international B2B contracts.
Why Choose Huadong Cable for NAYRY-J/O Cable?
Huadong Cable Group is a global power cable manufacturer with over 20 years of production expertise. We engineer low-voltage aluminium armoured cables strictly to DIN VDE and IEC standards, providing Material Test Certificates (MTC) and quality testing reports for every shipment.
Our manufacturing facility offers factory-direct pricing, custom drum lengths, ISPM 15 export-compliant wooden reels, and full global logistics management, serving EPC contractors, power utilities, and industrial clients worldwide.
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Based on high-quality products, a good reputation, and excellent service, we sincerely hope to establish mutually beneficial cooperation with domestic and foreign merchants and create a bright future together.
Our Clients
We are professional cable manufacturers. Thanks to the excellent quality of our cables and continuous product innovation, we export them to over 130 countries worldwide and have received numerous praises from our customers.
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HuaDong Cable Group was established in 1999 and covers an area of 66,000 square meters, located in the Xiuwu Industrial Zone of Jiaozuo City, China. We have 20 advanced production lines and 25 testing machines, with an annual production capacity of over 15 million kilometers.
Why choose Huadong cable?
As a leading global cable manufacturer, Huadong Cable delivers high-performance wire and cable solutions engineered to strict international standards. Trusted in over 130 countries, we combine factory-direct advantages with uncompromising quality to power your critical projects worldwide.
AboutHuaDong
Established in 1999, Huadong Cable Group is a national high-tech enterprise and an integrated manufacturer specializing in advanced cable R&D, production, and global trade. Deeply integrated into global infrastructure and the Belt and Road Initiative, Huadong Cable Group exports to over 130 countries and regions worldwide, including Europe, South America, North America, the Middle East, Africa, Asia, and Oceania.
Technology HuaDong
Huadong Cable Group places technology and continuous R&D at the core of our operations. Supported by a robust team of 60 senior R&D specialists and experienced engineers, we hold over 100 national patents and utility models. This strong technical foundation ensures rigorous quality control, exceptional product durability, and tailored engineering support for every client.
Main products
Our comprehensive product includes high-quality power cables, aerial insulated cables (ABC cables), marine cables, flame-retardant & fire-resistant cables, and low-smoke halogen-free (LSZH) cables. We also specialize in rubber cables, high-temperature resistant cables, instrument & control cables, solar/photovoltaic cables, and customized wiring solutions for diverse industrial applications.
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