Medium Voltage RHZ1 (AS) CU OL/2OL Cable – XLPE Insulated LSZH Power Cable for 6/10kV to 18/30kV Distribution Networks

Product Overview

RHZ1 (AS) CU OL/2OL is a medium voltage copper power cable with XLPE insulation, designed for fixed installations requiring high safety, fire performance, and reliability. It is halogen-free, low smoke (LSZH), and engineered for power transmission and distribution in modern electrical networks.

This cable is widely used in infrastructure, industrial plants, and utility networks where fire safety, environmental resistance, and long-term durability are critical.

Applications

The cable is specifically developed for fixed installation environments and is suitable for:

• Medium voltage power transmission and distribution networks

• Industrial facilities and plants

• Urban infrastructure and street lighting systems

• Installation in:

  • Open air

  • Buried systems

  • Cable ducts and conduits

Its LSZH design makes it particularly suitable for public areas, tunnels, and enclosed spaces where smoke and toxic emissions must be minimized.

Cable Construction

The RHZ1 (AS) CU OL/2OL cable adopts a multi-layer engineered structure to ensure electrical stability and mechanical robustness:

1. Conductor

• Electrolytic annealed copper conductor (Class 2)

• Compliant with EN 60228 / IEC 60228

• Optional longitudinal water-blocking (-2OL design)

2. Conductor Screen

• Thermosetting semiconductive layer for electric field control

3. Insulation

• XLPE (Cross-linked Polyethylene)

• Manufactured using triple extrusion process in nitrogen atmosphere

• Ensures excellent dielectric performance

4. Insulation Screen

• Strippable semiconductive layer for improved installation and stress control

5. Metallic Screen

• Copper wires + copper tape

• Minimum cross-section: 16 mm²

6. Water Blocking

• Hygroscopic tape for longitudinal water tightness (-OL / -2OL)

7. Filling

• Halogen-free fire-resistant polyolefin compound

8. Outer Sheath

• Polyolefin sheath (ST12)

• Red color with identification stripes

• Resistant to environmental stress and UV

Key Features & Advantages

1. Fire Safety Performance

• Flame non-propagation: EN 60332-1 / IEC 60332-1

• Fire non-propagation: EN 50399

• CPR classification: Cca-s1b, d2, a1

• Halogen-free (EN 60754-1)

• Low corrosive gas emission (EN 60754-2)

• Low smoke emission (>60% light transmittance)

 Ideal for critical infrastructure and confined environments

2. Thermal Performance

• Max conductor temperature: 90°C

• Short-circuit temperature: 250°C (5s)

• Minimum service temperature: -15°C

3. Electrical Performance

• Rated voltages:

  • 6/10 (12) kV

  • 8.7/15 (17.5) kV

  • 12/20 (24) kV

  • 18/30 (36) kV

4. Mechanical Performance

• Minimum bending radius:

  • Fixed: 15 × cable diameter

  • Installation: 20 × cable diameter

• High resistance to:

  • Abrasion

  • Tearing

5. Environmental Performance

• UV resistant (UNE 211605)

• Water resistance: AD6 (wave exposure)

• Suitable for harsh outdoor and underground environments

Standards & Compliance

This cable is manufactured in compliance with international standards:

• IEC 60502-2 – Medium voltage power cables

• EN 50575 (CPR) – Fire performance classification

• EN 60332-1 / EN 50399 – Flame propagation

• EN 60754 / IEC 60754 – Halogen-free and gas emission

• EN 61034 / IEC 61034 – Smoke density

• Certification: AENOR