What advantage does plastic have for high voltage insulation on underground cables?

Plastic insulation offers several advantages for high voltage underground cables, making it a preferred choice in many applications. One of the significant benefits of using plastic is its reliability. Plastics, such as cross-linked polyethylene (XLPE), provide excellent electrical and thermal insulation properties, ensuring that they can withstand high voltages without breakdown. This reliability is crucial in underground installations, where environmental factors can pose risks to insulation integrity.

Economically, plastic materials tend to be more cost-effective compared to other types of insulation materials, such as rubber or oil-based systems. This reduction in material costs, combined with the longevity and durability of plastic, makes it a more attractive option for manufacturers and utility companies looking to maintain budgets while ensuring safety and performance.

Additionally, plastic insulation is lighter and more flexible than many alternative materials, which makes handling and installation easier. This flexibility allows for simpler routing through tight spaces during installation, thereby reducing labor time and costs.

Considering these advantages—reliability, cost-effectiveness, and ease of handling—plastic insulation stands out as a versatile solution for high voltage applications, supporting the choice that encompasses the strengths of this material collectively.