Description

El-Hegaz armored copper power cable (3×70 + 35) mm²: heavy-duty armored power transmission

Introduction: Armored cables as strategic infrastructure

With the large-scale construction activity of 2026, electrical reliability is fundamental to successful projects. TheEl-Hegaz armored 3-core copper cable, size (2×70 + 35) mm²is an advanced engineering solution designed to withstand demanding underground and mechanical conditions. It is more than a current-carrying cable; its armored construction protects power flow from pressure, moisture, and chemical exposure that buried cables may encounter.

Choosing El-Hegaz in this size means investing in copper quality and long service life. For large loads approaching 200 A, current-transmission efficiency depends directly on conductor purity and armor quality, areas addressed through compliance with relevant Egyptian and international standards.

Chapter One: Structural analysis and technical layers

El-Hegaz armored (70 + 35) mm² cable uses a multilayer structure in which each layer performs a specific function to support stable power delivery:

1. Copper cores

• Main conductors (2×70 mm²):99.9% pure electrolytic red copper is used. The strands are helically arranged to reduce electrical resistance, helping prevent excessive cable temperature and maintain stable voltage$Voltage Drop$delivered to heavy equipment.

• Third conductor (1×35 mm²):This conductor serves as neutral or earth. Using a 35 mm² cross-section—half the area of the main phase conductors—is an economical engineering approach that can reduce cable weight and cost while maintaining required safety when appropriate to the electrical design.

2. Internal insulation

Each copper conductor is covered with high-quality PVC or$XLPE$, depending on specification, and color-coded for easier connection. The insulation is designed to withstand elevated operating temperatures without electrical breakdown.

3. Bedding layer

A flexible plastic layer surrounds the three cores. Its key function is to act as a cushion, preventing sharp steel armor wires from contacting the inner insulation and protecting the conductors from abrasion during bending or pulling on site.

4. Steel Wire Armor (SWA)

This is the core of the cable’s mechanical strength and consists of strong galvanized-steel wires surrounding the inner layers.

• Mechanical protection:Provides protection against cutting and crushing forces caused by heavy equipment passing above the cable route.

• Biological barrier:Helps prevent rodents from penetrating and damaging the cable, an important consideration in desert and agricultural areas.

5. Outer sheath

The final layer is durable black PVC resistant to ultraviolet radiation, salts, and chemicals in soil, making the cable suitable for direct burial when installation requirements are met.

Chapter Two: Cable applications in major projects in 2026

1. Supplying industrial complexes and workshops

A 70 mm² conductor is well suited to connecting main distribution boards to large machinery requiring stable current, including hydraulic presses, small furnaces, and central air-conditioning systems.

2. Road-lighting networks and new cities

Because lighting cables are exposed to persistent moisture and soil pressure, El-Hegaz armored cable helps reduce the risk of earth-leakage faults that can interrupt lighting in large residential developments.

3. Pumping stations and strategic irrigation projects

In agricultural areas and stations near water sources, the moisture-resistant sheath and steel armor provide strong protection against natural corrosion factors and mechanical vibration generated by pumps.

Chapter Three: Economic value and sustainability

Investing in El-Hegaz armored cable is a sound long-term financial decision:

• Savings on protective conduit:Thanks to the armor, the cable can reduce the need for additional rigid protective conduit and may be installed in a properly prepared trench with fine-sand bedding where the design permits.

• Reduced energy loss:Pure copper reduces energy lost as heat, helping lower facility electricity consumption.

• Service life exceeding 40 years:The cable is designed for long-term operation with limited maintenance requirements, supporting project asset value.

Chapter Four: Professional engineering installation guide

To achieve maximum performance from El-Hegaz armored cable, follow these steps:

• Use cable glands:Install appropriate metal cable glands to bond the steel armor to the electrical-panel body, providing effective earthing for the system.

• Burial depth:A burial depth of at least 80 cm is generally recommended to keep the cable away from surface activity and protect it from high mechanical loads, subject to project and local-code requirements.

• Bending radius:Avoid excessively sharp bends to protect the steel armor and internal copper cores.

Chapter Five: Safety and fire protection

El-Hegaz armored cables are designed withflame-retardant properties. If an electrical fault or external fire occurs, the cable is designed to limit flame propagation along underground routes, providing additional time for fire-protection systems and helping protect people and property.

Chapter Six: How to identify genuine El-Hegaz cable

1. Clear permanent marking:Check that the El-Hegaz company name and size (3×70 + 35) mm² are clearly printed on the outer sheath.

2. Steel quality:The armor wires should be bright, galvanized, and evenly arranged beneath the black sheath, with good resistance to rapid corrosion.

3. Copper purity:Genuine high-purity copper has a bright pinkish color and should not show signs of low-grade recycled impurities that can increase cable heating.

Conclusion: El-Hegaz—a premium choice for major projects

In conclusion,El-Hegaz 70 + 35 mm² armored copper cablesets a high standard in armored power cables by combining electrical performance with strong mechanical protection. Selecting this cable establishes a foundation for a safe, stable, and sustainable installation designed for decades of service.