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What factors can affect mineral-insulated fire-resistant cables?

In the production process of mineral-insulated fire-resistant cables, numerous factors can affect the insulation resistance of these cables, potentially leading to a reduction in their overall insulation performance. Among them, four key factors have the most significant impact on mineral-insulated fire-resistant cables.

2022-07-26

What makes mineral-insulated fire-resistant cables superior?

Because mineral-insulated fire-resistant cables are entirely composed of inorganic materials—specifically, metallic copper and magnesium oxide powder—they do not ignite, cannot burn, and are inherently non-combustible. Moreover, since copper has a melting point of 1083°C and magnesium oxide boasts an even higher melting point of 2800°C, these cables can continue to supply power safely—even under extreme fire conditions close to copper's melting point. This makes them truly fire-resistant cables capable of maintaining functionality during prolonged exposure to intense heat. Currently, they stand out as the only type of electrical cable that can sustain power supply for up to three hours in a 1000°C fire environment, while also withstanding the impact of firefighting water jets and heavy objects falling onto them.

2022-07-20

In which construction sites are mineral-insulated fire-resistant cables used?

To better protect the safety of people's lives and property, the state has successively issued relevant regulations: for residential buildings that are 100 meters tall or taller, or have 35 stories or more, the power supply trunk lines for fire protection facilities must use mineral-insulated fire-resistant cables.

2022-07-14

What are the advantages of mineral-insulated fire-resistant cables?

Since all materials used in mineral-insulated fire-resistant cables are inorganic, they offer several advantages that other types of cables do not possess. Mineral-insulated cables are composed of copper and mineral insulation materials. These cables are non-combustible, do not support combustion, and can continue operating even under flame conditions. Moreover, mineral-insulated fire-resistant cables come with numerous additional benefits.

2022-07-08

What is the function of mineral-insulated fire-resistant cables?

Mineral-insulated fire-resistant cables are mineral-based cable products boasting exceptional fire resistance. They offer superior safety performance, making them ideal for applications with heightened requirements. These cables effectively safeguard against animal bites, chemical corrosion, and external mechanical damage. With a continuous operating temperature of up to 250°C, they can maintain power supply for 3 hours at temperatures ranging from 950°C to 1000°C—and even withstand conditions close to copper’s melting point of 1083°C for short durations or extended periods. Due to their outstanding performance, mineral-insulated cables are well-suited for circuits rated up to 1000V.

2022-07-02

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