0.6/1kV RZ1-K Cable

What is RZ1-K 0.6/1kV Flexible Cable?

The RZ1-K XLPE LSZH flexible cable is a low-voltage 0.6/1kV single-core and multi-core unarmoured power and control cable built with Class 5 flexible stranded copper conductors, XLPE core insulation, and a flame-retardant Low Smoke Zero Halogen (LSZH) outer protective sheath conforming to IEC 60502-1 and EN 60228 standards. It is engineered for fixed installations across commercial complexes, public transit systems, and industrial plants requiring effortless flexibility and non-toxic fire safety.

Designed to facilitate installations involving sinuous courses and tight cable tray paths, the multi-wire Class 5 copper conductor provides handling pliability compared to rigid Class 2 conductors. The thermosetting XLPE insulation ensures thermal endurance up to +90°C with high current-carrying capacity, while the halogen-free outer jacket suppresses flame propagation per IEC/EN 60332-3-24 and eliminates toxic halogen acid emissions, protecting personnel and sensitive substation hardware during fire emergencies.

RZ1-K Cable Construction

• Conductor: Class 5 flexible stranded plain copper conductor conforming to EN 60228, providing high conductivity and flexibility for sinuous installations.
• Insulation: High-grade Cross-Linked Polyethylene (XLPE) delivering high dielectric strength and continuous thermal endurance up to +90°C.
• Assembly: Multi-core configurations laid up compactly into a circular profile.
• Bedding / Armour: Unarmoured, lightweight flexible design engineered for rapid pulling in cable trays, conduits, and duct networks.
• Outer Sheath: Thermoplastic Low Smoke Zero Halogen (LSZH) compound meeting flame retardancy criteria IEC/EN 60332-1-2 and IEC/EN 60332-3-24.
• Core Identification: 3-core (Green/Yellow, Blue, Brown); 4-core (Green/Yellow, Brown, Black, Grey); 5-core (Green/Yellow, Blue, Brown, Black, Grey); 7-core (Black with White numbers).
• Sheath Colour: Standard Green; Black available upon request.

Applications

RZ1-K XLPE LSZH flexible cables are engineered for fixed power distribution and control circuits in high-traffic commercial spaces, public buildings, and industrial facilities requiring flame retardancy and zero halogen emissions.

• Public Infrastructure & High-Traffic Areas: Airport terminals, underground train stations, passenger halls, hospitals, and educational facilities.
• Industrial Facilities & Sinuous Courses: Machine connection panels, switchboards, and distribution corridors requiring flexibility for complex turns.
• Data Centers & Server Rooms: Critical power feeds and UPS lines where halogen acid emissions must be eliminated to protect sensitive circuitry.
• Building Management Systems: Power links to ventilation fans, smoke extraction systems, and emergency lighting panels.

Specifications & Dimensions

The RZ1-K cable series covers single-core (2.5mm² to 630mm²), 2-core (1.5mm² to 16mm²), 3-core (1.5mm² to 70mm²), 4-core (1.5mm² to 240mm²), and 5-core (1.5mm² to 50mm²) configurations, as well as multi-core control cables. Rated for 0.6/1kV across a temperature range of -15°C to +90°C, it maintains a minimum bending radius of 5 times the overall diameter. Single-core nominal diameters range from 5.2mm (2.5mm²) to 42.7mm (630mm²), with cable weights spanning 45 kg/km to 6,276 kg/km. Maximum conductor DC resistance at 20°C ranges from 7.98 Ω/km (2.5mm²) down to 0.0287 Ω/km (630mm²). Current-carrying capacities in air at 40°C reach up to 1,088A (630mm² single-core) and 596A in earth at 35°C, conforming to IEC 60502-1 and EN 60228 standards.

Standards

Design & Conductor Standards: IEC 60502-1, EN 60228
Flame Retardancy: IEC/EN 60332-1-2 (Single cable vertical test), IEC/EN 60332-3-24 (Bunched vertical fire test)
Halogen-Free Emission: IEC/EN 60754-1/2 (Zero halogen acid gas release)
Smoke Density: IEC/EN 61034-1/2 (Low optical smoke density)
Voltage & Temperature Ratings: Rated 0.6/1kV; Operating temperature: -15°C to +90°C; Minimum bending radius: 5 × 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 advantage of Class 5 flexible conductors in RZ1-K cables?
A: Class 5 conductors consist of multiple fine copper strands, offering higher flexibility than rigid Class 2 conductors, which simplifies pulling through conduits, cable trays, and sinuous architectural paths.

Q: What fire safety benefits does the LSZH sheath provide?
A: The LSZH sheath emits negligible smoke (IEC/EN 61034) and releases zero halogen acid gases (IEC/EN 60754) when exposed to fire, preserving emergency escape visibility and preventing acidic corrosion of nearby metallic and electronic assets.

Q: Can RZ1-K cable be buried directly underground?
A: RZ1-K is an unarmoured cable designed primarily for trays, conduits, ducts, or indoors; direct burial in ground trenches is generally recommended only within protective conduits or by selecting an armoured alternative.

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, 30% advance deposit and 70% against shipping documents) and 100% Irrevocable Letter of Credit (L/C) at sight.

0.6/1kV RZ1-K Cable – Why Choose Huadong Cable?

Huadong Cable Group manufactures RZ1-K 0.6/1kV flexible power cables in compliance with IEC 60502-1 and EN 60228 standards, verified by comprehensive testing in ISO/IEC 17025 accredited facilities. Utilizing 99.99% high-purity electrolytic copper drawn into Class 5 flexible conductors, our extrusion lines apply XLPE insulation to guarantee thermal endurance up to +90°C and stable electrical insulation resistance. Encased in a low smoke zero halogen (LSZH) outer jacket tested to IEC/EN 60332-1-2 and IEC/EN 60332-3-24, our cables deliver fire performance across demanding industrial and commercial projects.

With more than 20 years of dedicated cable manufacturing expertise, Huadong Cable Group operates high-speed bunching lines, automated continuous extrusion equipment, and polymer compounding workshops certified to ISO 9001, CE, CPR (EN 50575), RoHS, and REACH protocols. By supplying directly from our manufacturing base, we offer factory-direct pricing, 100% Mill Test Certificates (MTC) tested in accredited testing facilities, continuous drum lengths packaged on ISPM 15 heat-treated export wooden reels, and dependable logistics support for EPC contractors and distributors worldwide.