NSGAFÖU 1.8/3kV Cable

What is NSGAFÖU 1.8/3kV Rubber Cable?

The NSGAFÖU 1.8/3kV Rubber Cable is a specialized, VDE-approved single-core industrial power cable manufactured in compliance with DIN VDE 0250 Part 602. It is specifically engineered as a short-circuit-proof and earth-fault-proof wiring solution for control cabinets, low- and medium-voltage switchgear, and traction rolling stock systems including passenger trains, locomotives, trams, and trolleybuses.

The standard German DIN/VDE designation outlines its internal construction: N indicates a standardized cable type; S represents special railway and industrial elastomer insulation; G denotes an Ethylene Propylene Rubber (EPR) dielectric layer; AF indicates a finely stranded flexible conductor; Ö designates an oil-resistant elastomer compound; and U signifies a flame-retardant Polychloroprene (PCP) protective outer sheath. With a rated operating voltage of 1.8/3kV and Class 5 tinned copper conductors, NSGAFÖU provides mechanical tear resistance, long-term oil endurance, and stable electrical integrity in high-vibration rolling stock environments.

NSGAFÖU 1.8/3kV Rubber Cable Construction

• Conductor: Class 5 flexible tinned annealed copper conductor per EN 60228, offering oxidation resistance and mechanical flexibility under vibration.
• Insulation: High-grade Ethylene Propylene Rubber (EPR) providing dielectric strength and thermal endurance up to +90°C.
• Outer Sheath: Heavy-duty Polychloroprene (PCP) elastomer compound offering tear resistance, mechanical toughness, and oil protection.
• Sheath Colour: Industrial Black.
• Third-Party Certification: Tested and certified with VDE approval from the VDE Testing and Certification Institute.

Applications

NSGAFÖU 1.8/3kV flexible rubber cables are engineered for high-stress electrical distribution circuits across railway and power distribution sectors:

• Railway Rolling Stock & Locomotives: Power wiring, traction motor leads, converter interconnections, and auxiliary equipment circuits in trains, underground metros, and trams.
• Electric Commercial Buses: Main high-current battery connections and power distribution feeds across commercial electric and hybrid transit buses.
• Switchgear & Control Distribution Panels: Short-circuit-proof jumper wiring connecting busbars, circuit breakers, and isolators inside switch cabinets up to 1.8/3kV.
• Dry Industrial Enclosures: Internal power links for transformers, industrial drives, and rotating machinery where oil exposure and space limitations exist.

Specifications & Dimensions

Huadong Cable Group manufactures NSGAFÖU 1.8/3kV rubber cables across single-core cross-sectional areas from 1.5mm² up to 500mm² (including 1.5, 2.5, 4, 6, 10, 16, 25, 35, 50, 70, 95, 120, 150, 185, 240, 300, 400, and 500mm²). Operating at a rated voltage Uo/U of 1.8/3kV across an operating temperature range of -40°C to +90°C (fixed) and -25°C to +90°C (flexed), the series features nominal insulation thicknesses from 1.3mm to 3.4mm, nominal sheath thicknesses from 0.8mm to 1.6mm, nominal overall outer diameters from 6.3mm up to 42.0mm, and unit weights spanning 51 kg/km to 5,500 kg/km. Maximum conductor DC resistance values at 20°C strictly conform to EN 60228 metal-coated wire specifications (13.7 Ω/km for 1.5mm² down to 0.0384 Ω/km for 500mm²). At an ambient temperature of 30°C and conductor operating temperature of 90°C, continuous current carrying capacity ranges from 30A to 1,250A in free air, and 15A to 662A when routed in conduits, with an installation bending radius of 4 times the overall diameter for fixed installations and 5 times for flexed applications per VDE 0250 guidelines.

Standards

Design & Manufacturing Standards: DIN VDE 0250 Part 602, EN 60228 Class 5
Third-Party Accreditation: VDE Approved (Tested and certified by VDE Testing & Certification Institute)
Flame Retardancy: IEC/EN 60332-1-2 (Vertical flame propagation on a single insulated wire/cable)
Voltage & Thermal Ratings: Voltage Rating Uo/U: 1.8/3kV; Fixed Operating Temp: -40°C to +90°C; Flexed Operating Temp: -25°C to +90°C
Bending Performance: Minimum Bending Radius: 4 × OD (Fixed), 5 × OD (Flexed)
Regulatory Directives: Low Voltage Directive 2014/35/EU, RoHS Directive 2015/65/EU, REACH Regulation EC 1907/2006, CE Marked

Frequently Asked Questions

Q: What makes NSGAFÖU cables suitable as short-circuit-proof wiring in switchgear?
A: The thick-wall combination of high-grade EPR insulation and heavy-duty Polychloroprene (PCP) rubber outer sheath provides robust dielectric and physical barriers, preventing phase-to-earth and phase-to-phase flashovers even under high short-circuit electromagnetic stresses.

Q: Why are tinned copper conductors used in NSGAFÖU cables instead of bare copper?
A: Tin plating protects the individual Class 5 copper strands against surface oxidation, atmospheric corrosion, and chemical reaction with sulfur compounds present in the vulcanized rubber compounds, ensuring electrical conductivity and flexural life.

Q: Can NSGAFÖU cable be installed outdoors or in wet locations?
A: Standard NSGAFÖU is rated for laying in dry rooms and enclosed vehicle bodies. For applications involving continuous water immersion or outdoor underground direct burial, alternatives like AD8-rated H07RN-F or specialized medium-voltage cables are recommended.

Q: What commercial payment terms does Huadong Cable accept for international orders?
A: We accept standard international commercial payment terms, primarily Telegraphic Transfer (T/T, with 30% advance deposit and 70% against shipping documents) and 100% Irrevocable Letter of Credit (L/C) at sight.

NSGAFÖU 1.8/3kV Cable – Why Choose Huadong Cable?

Huadong Cable Group manufactures NSGAFÖU 1.8/3kV flexible rubber cables in compliance with DIN VDE 0250 and EN 60228 standards. Utilizing high-purity electrolytic tinned copper, our high-speed stranding machinery produces Class 5 flexible conductors with uniform strand distribution, preventing conductor fatigue and wire fractures in high-vibration rail and bus environments. Continuous vulcanization extrusion lines apply the EPR insulation and PCP outer jacketing under automated laser centering, ensuring wall thickness uniformity and resistance against mechanical abrasion, tearing, and mineral oils.

Backed by more than 20 years of precision cable engineering expertise, Huadong Cable Group operates testing facilities accredited under ISO/IEC 17025 and certified to ISO 9001 and CE frameworks. Direct factory supply eliminates intermediary agent markups, allowing us to provide competitive factory pricing, 100% routine spark and electrical withstand testing documented by Mill Test Certificates (MTC), continuous drum cuts packaged on heat-treated ISPM 15 export wooden reels, and dependable logistics for international rolling stock manufacturers, panel builders, and mass transit operators worldwide.