RHZ1 LSZH Cable – 18/30 kV Medium Voltage Halogen-Free XLPE Cable

RHZ1 LSZH Medium Voltage Cable – 18/30 kV

Product Overview

The RHZ1 is a high-performance, medium-voltage power cable engineered for safety and reliability in demanding environments. Designed for rated voltages up to 18/30 kV, this cable is the definitive choice for power distribution networks in large industrial facilities, power plants, transformer stations, and renewable energy projects such as wind and solar farms.

Its core advantage lies in its Low Smoke Zero Halogen (LSZH) construction, which ensures maximum safety in populated or critical areas by emitting minimal smoke and no corrosive halogen gases in the event of a fire. The robust design makes it ideal for challenging installations, including underground burial in tunnels and trenches, where it offers superior resistance to moisture and mechanical stress.

Available variants include RHZ1-OL and RHZ1-2OL for enhanced water protection, and RHZ1-AS for fire-retardant performance in critical areas.

Key Features & Benefits

• Enhanced Fire Safety: Halogen-free, low smoke emission, and flame non-propagation properties protect people, equipment, and the environment during a fire emergency.

• Superior Environmental Resistance: The halogen-free polyolefin outer sheath is abrasion-resistant, tear-resistant, and UV-resistant, ensuring long-term durability in harsh outdoor and underground conditions.

• Reliable Performance: High-quality XLPE insulation allows for a high maximum service temperature of 90°C and excellent dielectric strength.

• Moisture Protection: The design includes a metallic screen and optional longitudinal sealing to prevent water ingress, enhancing reliability in wet environments. RHZ1-OL and RHZ1-2OL variants provide enhanced water protection.

• Design Flexibility: Available with either copper or aluminium conductors and suitable for direct burial, making it adaptable to a wide range of project requirements.

Typical Applications

• Utility & Power Distribution: Primary and secondary distribution networks in urban and industrial areas.

• Industrial Facilities: Power supply for large factories, manufacturing plants, and heavy industry.

• Power Generation: Internal wiring and grid connections for conventional and renewable power plants.

• Renewable Energy: Collection and transmission lines in wind and solar farms.

• Infrastructure: Critical power links in tunnels, subways, and large commercial complexes where fire safety is paramount.

• Installation Methods: Suitable for installation in underground tunnels, trenches, ducts, and for direct burial.

Construction Details

1. Conductor: Copper or Aluminium, Class 2.

2. Internal Semiconductor: Thermosetting semiconductor material.

3. Insulation: Cross-linked Polyethylene (XLPE).

4. External Semiconductor: Thermosetting and strippable semiconductor material.

5. Metallic Screen: A screen of copper wires and copper tape, with a minimum cross-section of 16 mm².

6. Longitudinal Sealing: Hygroscopic tape completely covering the screen (optional).

7. Outer Sheath: External sheath of halogen-free polyolefin, red colour.

Technical Specifications

• Standard: IEC 60502-2

• Rated Voltage (Uo/U): 18/30 kV

• Conductor: Copper or Aluminium, Class 2

• Insulation: Cross-linked Polyethylene (XLPE)

• Outer Sheath: Halogen-Free Polyolefin, Red

• Minimum Bending Radius: 15 x Cable Diameter

Working Temperature

• Maximum Service Temperature: 90°C

• Maximum Short-Circuit Temperature: 250°C (max. 5 s)

• Minimum Service Temperature: -15°C

Performance

• Halogen Free: Based on IEC 50267.

• Flame Non-Propagation: Based on IEC 60332-1.

• Low Smoke Emission: Based on IEC 61034.

• Abrasion-Resistant: Yes.

• Tear-Resistant: Yes.

• UV-Resistant: Yes.

Technical Data – 18/30 kV

*Nominal values.

Standards & Compliance

The RHZ1 cable is designed and tested in accordance with the following international standards:

• IEC 60502-2: Power cables with extruded insulation and their accessories for rated voltages from 1 kV (Um = 1.2 kV) up to 30 kV (Um = 36 kV) – Part 2: Cables for rated voltages from 6 kV (Um = 7.2 kV) up to 30 kV (Um = 36 kV).

• IEC 60332-1: Tests on electric and optical fibre cables under fire conditions – Part 1-2: Test for vertical flame propagation for a single insulated wire or cable.

• IEC 61034: Measurement of smoke density of cables burning under defined conditions.

• IEC 50267: Test on gases evolved during combustion of materials from cables (Halogen-free verification).

Ordering Information

To request a quote or place an order, please provide the following information:

• Product Type: RHZ1 (or specify variant, e.g., RHZ1-OL, RHZ1-2OL, RHZ1-AS)

• Rated Voltage: 18/30 kV

• Conductor Size: (e.g., 1x240/16 mm²)

• Conductor Material: Copper (Cu) or Aluminium (Al)

• Options: Longitudinal Sealing (Yes/No)

• Quantity: Total length in meters.