H07ZZ-F LSZH Flexible Rubber Cable

What is H07ZZ-F Cable?

The H07ZZ-F cable is a harmonized European-standard, heavy-duty low-smoke zero-halogen (LSZH) flexible rubber cable rated for 450/750V electrical supply systems, engineered with Class 5 flexible copper conductors, cross-linked halogen-free insulation, and an external cross-linked LSZH protective sheath conforming to EN 50525-3-21 and HD 22-13 standards. It is specifically developed to provide safe, reliable electrical power to mobile installations, temporary event distributions, and mission-critical backup power units operating under medium mechanical stresses.

Unlike standard rubber cables (such as H07RN-F) that incorporate chlorinated elastomers, H07ZZ-F utilizes advanced thermosetting halogen-free elastomer technology that does not release toxic chlorine or acidic vapors during combustion. In the event of a fire, it complies with IEC/EN 60332-3-10 bunched cable flame spread requirements while maintaining minimal smoke density and zero acidic fumes, preventing secondary chemical corrosion to adjacent automated systems and ensuring life-safety protection in crowded public and commercial venues.

H07ZZ-F Cable Construction

• Conductor: Class 5 flexible plain annealed copper conductors complying with EN 60228, delivering superior flexibility and high fatigue endurance under repeated dynamic bending.
• Insulation: Low Smoke Zero Halogen (LSZH) cross-linked rubber compound providing excellent dielectric properties and thermal operation up to +90°C.
• Bedding / Interstice Filler: Flexible halogen-free elastomer filling between cores to ensure a concentric, circular profile and easy gland termination.
• Screen / Armour: Unarmoured, highly flexible construction optimized for rapid deployment and repeated coiling in mobile equipment setups.
• Outer Sheath: Heavy-duty, UV-resistant cross-linked Low Smoke Zero Halogen (LSZH) elastomer compound offering high mechanical tear and abrasion resistance.
• Core Identification: 1-core: Black; 2-core: Blue, Brown; 3-core: Green/Yellow, Blue, Brown; 4-core: Green/Yellow, Brown, Black, Grey; 5-core: Green/Yellow, Blue, Brown, Black, Grey; 6-core and above: Black with White numbers + Green/Yellow earth conductor.
• Sheath Colour: Black.

Applications

H07ZZ-F flexible rubber cables are specifically designed for fixed and mobile installations in public spaces, transport hubs, and industrial environments where fire, smoke, and toxic gas emissions pose severe hazards to personnel and equipment. Built to withstand medium mechanical stresses and weather exposure, they are suitable for indoor and outdoor installations across diverse temporary and permanent power distribution architectures.

• Mobile Power Units & Generators: Flexible power connection leads linking diesel generators and mobile distribution trailers to primary switchgear.
• UPS & Critical Backup Installations: Interconnecting battery rooms, inverters, and emergency supply boards in data centers and control hubs.
• Stage Lighting & Audio-Visual Systems: High-density power feeds for event arenas, broadcast theaters, and concert halls requiring flexible routing and non-toxic fire safety.
• Public Venues & Enclosed Facilities: Sub-distribution circuits across airports, rail passenger terminals, healthcare complexes, and underground stations.

Specifications & Dimensions

The H07ZZ-F cable portfolio spans extensive single-core and multi-core configurations, including 1-core (1.5mm² up to 630mm²), 2-core (1mm² to 25mm²), 3-core (1mm² to 35mm²), 4-core (1mm² to 240mm²), 5-core (1mm² to 150mm²), and multi-core control arrangements (7-core up to 37-core in 1.5mm²). Operating at a rated voltage of 450/750V, it supports continuous fixed operating temperatures from -20°C to +90°C and dynamic flexing from -5°C to +50°C, maintaining a minimum bending radius of 4× overall diameter for fixed installations and 6× overall diameter under flexing service. Current carrying capacities in air reach up to 1,242A for single-core 630mm² conductors (with maximum conductor DC resistance of 0.0287 Ω/km at 20°C), while outer diameters range from 6.4mm on single-core 1.5mm² up to 81.5mm on 4-core 240mm² assemblies, strictly conforming to EN 50525-3-21 dimensional specifications and compatibility with standard A2 brass and A2PL plastic compression glands.

Standards

Design & Construction Standards: EN 50525-3-21, HD 22-13, CEI 20-19 Part 13, EN 60228
Flame Retardancy: IEC/EN 60332-3-10 (Bunched cable vertical flame spread test)
Environmental Resistance: UV Resistant, Weather Resistant (suitable for indoor and outdoor installations)
Voltage Rating (Uo/U): 450/750V
Temperature Spectrum: Fixed: -20°C to +90°C; Flexed: -5°C to +50°C
Minimum Bending Radius: Fixed: 4 × overall diameter; Flexed: 6 × overall diameter
Regulatory Compliance: European Regulation EN 50575 (CPR Compliant), Low Voltage Directive 2014/35/EU, CE Marked, RoHS Directive 2015/65/EU, REACH EC 1907/2006

Frequently Asked Questions

Q: What is the primary difference between H07ZZ-F and conventional H07RN-F rubber cables?
A: While both cables offer flexible rubber performance and withstand medium mechanical stresses, H07RN-F utilizes chlorinated rubber (PCP/neoprene) which emits corrosive hydrochloric acid gas during fires, whereas H07ZZ-F features cross-linked LSZH compounds that produce low smoke and zero toxic halogens.

Q: Are all sizes of the 5-core H07ZZ-F cable harmonized under CENELEC standards?
A: Standard sizes up to 5-core 25mm² are fully harmonized (H07ZZ-F), while 5-core cross-sections of 35mm², 50mm², 70mm², 95mm², 120mm², and 150mm² are recognized national standard variants designated as 07ZZ-F.

Q: Can the H07ZZ-F cable be installed outdoors and exposed to direct sunlight?
A: Yes, H07ZZ-F is formulated with UV-resistant cross-linked LSZH jacketing and is fully approved for both indoor and outdoor service conditions subject to medium mechanical stresses.

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

H07ZZ-F Cable – Why Choose Huadong Cable?

Huadong Cable Group manufactures H07ZZ-F low-smoke zero-halogen flexible rubber cables in strict accordance with EN 50525-3-21 and HD 22-13 standards, verified through rigorous testing regimes for conductor DC resistance, cross-linked insulation elasticity, and IEC/EN 60332-3-10 bunched flame propagation. Utilizing high-purity oxygen-free Class 5 flexible copper conductors, our automated extrusion lines apply premium cross-linked LSZH elastomer compounds to ensure uniform wall thicknesses, continuous flexibility, and thermal endurance up to +90°C. Enclosed within a heavy-duty, UV-resistant black LSZH rubber sheath, our cables withstand mechanical abrasion and weather exposure while guaranteeing zero toxic halogen emissions in high-density public venues.

With more than 20 years of precision cable engineering expertise, Huadong Cable Group operates fully automated continuous vulcanization lines, high-speed multi-wire bunching workshops, and compounding facilities certified to ISO 9001, CE, CPR (EN 50575), RoHS, and REACH protocols. By eliminating intermediary trade markups, we provide competitive factory-direct pricing, 100% routine Mill Test Certificates (MTC) tested in accredited testing facilities, continuous drum lengths packaged on ISPM 15 heat-treated export wooden reels, and seamless door-to-port logistics for EPC contractors, event engineers, and industrial utilities worldwide.