Let me show you what mineral insulated cables are
When it comes to mineral cables, I believe most people are familiar with them. Mineral insulated cables, abbreviated as MI cables, are a type of cable that uses a copper sheath to wrap the copper conductor core and mineral materials as the insulation sheath. In a fire, it will not burn out and cause circuit breaking faults. However, ordinary cable insulation sheaths use organic materials, which can aid combustion or not flame retardant in the event of a fire, making it unable to operate continuously and easily causing safety accidents. Mineral insulated cables have the following characteristics:
1. Fire resistance and explosion-proof: Copper and magnesium oxide, two materials used in mineral insulated cables, belong to inorganic substances. This type of cable will not burn or aid in combustion, and can still be operated under conditions close to flames. The highly compacted insulation material in mineral insulated cables can prevent steam, gas, and flames from passing between the equipment parts connected to the cable, achieving explosion-proof effects.
2. High working temperature: Mineral insulated cables can operate continuously in environments with temperatures up to 250 ℃. However, in emergency situations, cables can continue to operate for a short period of time at temperatures close to the melting point of the copper sheath.
3. Long lifespan: Inorganic materials used in mineral insulated cables can ensure that the cables have stability, long lifespan, and fire resistance.
4. High current carrying capacity: For cables with the same cross-section, mineral insulated cables transmit higher currents than other types of cables.
Due to its important role in protecting life, materials, and information security, mineral insulated cables are widely used in trunk lines, fire protection lines, escape and rescue systems, such as emergency lighting, fire monitoring, alarm systems, elevator systems, smoke exhaust systems, and control lines.
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