Polycab Launches 240mm Aluminum Armored Power Cables

The safety and stability of power transmission are critical, with cables serving as the "blood vessels" of electrical systems. This article provides a detailed technical examination of Polycab's 240mm² 3.5-core aluminum armored power cable, analyzing its specifications, performance parameters, and applications to serve as a reference for power engineering design, procurement, and maintenance.

Product Overview

The Polycab 240mm² 3.5-core aluminum armored power cable is designed for medium-to-low voltage power transmission. Featuring aluminum conductors, this cable offers weight and cost advantages compared to copper alternatives. The 3.5-core configuration supports three-phase power transmission while providing grounding protection. The aluminum armor enhances mechanical strength and interference resistance, making it suitable for complex installation environments.

Technical Specifications

Manufacturer

Polycab India Limited, a leading cable manufacturer based in Gujarat, India, known for its advanced production technology and rigorous quality control systems.

Conductor Specifications

• Material: Aluminum
• Cross-section: 240mm²
• Advantages: Lighter weight and lower cost compared to copper, particularly beneficial for long-distance transmission or weight-sensitive applications

Core Configuration

3.5-core design comprising three phase conductors and one smaller neutral/ground conductor, suitable for three-phase four-wire power systems.

Insulation and Sheathing

• Insulation Material: PVC (1.7mm/1.2mm thickness for phase/neutral conductors respectively)
• Inner Sheath: PVC (minimum 0.6mm thickness)
• Outer Sheath: PVC (minimum 2.20mm thickness)

Armor Construction

Aluminum tape/wire armor (4 x 0.8mm nominal dimensions) providing mechanical protection, corrosion resistance, and electromagnetic shielding.

Electrical Characteristics

• Rated Current: 402A
• Max DC Resistance: 0.125Ω/km
• Max AC Resistance: 0.162Ω/km
• Reactance (50Hz): 0.072Ω/km
• Capacitance: 0.31μF/km

Physical Dimensions

• Overall Diameter (Armored): 55.4mm
• Diameter (Unarmored): 51.7mm
• Color: Black outer sheath

Application Scenarios

This cable is suitable for various medium-to-low voltage power transmission applications:

• Industrial power distribution for factories and manufacturing facilities
• Commercial buildings including office complexes and shopping centers
• Infrastructure projects such as urban grid upgrades and transportation systems
• Renewable energy projects including wind and solar power installations

Selection Considerations

When specifying this cable, engineers should evaluate:

• Load current requirements versus cable ampacity
• Installation method (direct burial, cable trays, conduits)
• Environmental conditions (temperature, moisture, chemical exposure)
• Voltage drop calculations
• Compliance with relevant national and industry standards

Conclusion

The Polycab 240mm² 3.5-core aluminum armored power cable represents a reliable solution for diverse power transmission needs. Its technical specifications and performance characteristics make it particularly suitable for cost-sensitive applications where conductor weight is a consideration. Proper selection and installation following engineering best practices will ensure optimal performance and system reliability.