11 characteristics of mineral insulated cables?

1. Fire-resistant: the two materials applied in mineral insulated cables, copper and magnesium oxide, are inorganic. Such cables do not burn, nor do they contribute to combustion, and can continue to operate under conditions close to flames. Copper sheath of 1083 ℃ under the melting, while the magnesium oxide insulation materials in 2800 ℃ under the curing. 2. high operating temperature: mineral insulated cables can withstand continuous operating temperature of up to 250 ℃. However, in an emergency, the cable can continue to operate at temperatures close to the melting point of the copper sheath for a short period of time.3. Long life: The inorganic materials applied in mineral insulated cables ensure that the cables are stable, long-lived and fire-resistant.4. Explosion-proof: Highly compacted insulating materials in mineral insulated cables prevent the passage of vapors, gases, and flames between the parts of the equipment that are connected to the cables.5. Small outer diameter: the diameter of mineral insulated cables is smaller than that of other cables with the same rated current.6. Waterproof: if mineral insulated cables are completely submerged in water, with the help of their seamless metal sheath, mineral insulated cables can continue to be operated.7. High mechanical strength: mineral insulated cables are rugged enough to withstand severe mechanical damage without impairing their electrical properties.8. High current-carrying capacity: for the same same cross-section, mineral insulated cables have a greater capacity than other types of cable. Mineral insulated cables transmit higher currents than other types of cables. At the same time, mineral insulated cables can withstand considerable overloads.9. Short circuit fault rating: At the same temperature, the short circuit fault rating of mineral insulated cables is significantly higher than that of other types of cables.10. Earthing: For mineral insulated cables, a separate earthing conductor is not required, as the copper sheath used for this cable already acts as an earthing conductor, which provides an extremely good and low earthing resistance. In the case of earth sheath circuit (ESR) cabling, the outer copper sheath can be used as the earth and neutral conductor in MEN (multi-earth neutral) systems.11. High corrosion resistance: The copper sheath of mineral insulated cables is highly corrosion-resistant, and for most installations, it does not need to take additional protective measures. In places where the copper sheath of the cable is susceptible to chemical corrosion or serious industrial contamination, a plastic sheath should be used to protect the mineral insulated cable.

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