12
2020-06
What should be paid attention to during the transportation and storage of mineral cables?
The main difference between mineral-insulated cables and other ordinary cables lies in the cross-linking treatment of specially formulated inorganic compounds using high-energy electron beams (radiation) generated by high-power electron accelerators during production, enabling the cables to withstand operating temperatures as high as 125℃. Mineral cables significantly improve fire resistance while maintaining flexibility.
2020-06-12
18
2020-06
How to install mineral cables?
Mineral-insulated cable is a type of cable where copper conductor cores are encased in a copper sheath, with magnesium oxide powder used as an inorganic insulating material to isolate the conductor from the sheath. The outermost layer can be a suitable protective sheath as required.
2020-06-18
15
2020-07
Performance and application prospects of mineral-insulated cables
Mineral-insulated cables are widely used in modern power distribution systems. Their fire resistance, durability, safety, reliability, ease of installation, and cost-effectiveness are unmatched by traditional power cables. A mineral-insulated cable is an inorganic cable. The outer layer is a seamless copper sheath, and a dense magnesium oxide insulation layer is provided between the sheath and the metal core. Depending on the application, it can be divided into power distribution cables, heating cables and heating elements, thermocouple cables and compensation cables, and special cables, among which power distribution cables are the most commonly used in practice.
2020-07-15
15
2020-07
Advantages of mineral-insulated cables
Because all the materials of mineral insulated cables are inorganic, it has some advantages that other cables do not have. 1. Fire resistance From 010 to 1504, the two materials used, copper and mineral insulation, are inorganic. This cable will not burn or support combustion, and can continue to work under conditions close to flames. Copper sheaths melt at 1083. 2. High operating temperature Mineral insulated cables can withstand continuous operating temperatures up to 250. In addition, in emergencies, the cable can continue to operate for a short time at temperatures close to the melting point of the copper sheath. 3. Long service life Mineral
2020-07-15
23
2020-07
Difference between mineral-insulated cables and ordinary cables
Mineral insulated cable intermediate connectors are used, and cable end terminals are used at the ends. The terminals have terminal boards that can be connected to the busbars and terminal boards of the equipment. Mineral insulated cables (MI cables), also known as magnesium oxide cables or fire-resistant cables in China, are copper-core copper-sheathed cables using magnesium oxide powder as insulation material. Mineral insulated cables consist of two inorganic materials: copper conductors, magnesium oxide, and copper sheathing. The differences between mineral insulated cables and ordinary cables are compared from the following aspects: I. Cable components
2020-07-23
14
2020-08
What are the advantages of mineral-insulated cables?
Mineral Insulated Cable Advantages: 1. Higher operating temperature: Mineral insulated cables can withstand continuous operating temperatures up to 250°C. Furthermore, in emergencies, the cable can continue to operate for a short time at temperatures approaching the melting point of the copper sheath (copper sheath melts at 1083°C). 2. Long service life: The inorganic materials used in mineral insulated cables ensure the stability and fire resistance of the cable, and ensure the service life of the cable. 3. Explosion-proof: The high-density insulation material in mineral insulated cables prevents steam, gases and flames from passing between equipment parts connected to the cable.
2020-08-14
20
2020-08
Mineral-insulated cable: Advantages of mineral-insulated cable
All materials of mineral insulated cables are inorganic, thus having advantages that other cables do not have. 1. High operating temperature: The continuous operating temperature of mineral insulated cables is as high as 250℃. In addition, in emergencies, the cable can continue to operate for a short time at a temperature close to the melting point of the copper sheath (copper sheath melts at 1083℃). 2. Long lifespan: Inorganic materials suitable for mineral insulated cables ensure the stability and fire resistance of the cable, guaranteeing its lifespan. 3. Explosion-proof: The highly compacted insulation material in mineral insulated cables prevents steam and gas from entering.
2020-08-20
25
2020-11
Cables: What factors affect the lifespan of rubber sheathed cables?
Today, electricity is widely used in our country. Rubber sheathed cables have penetrated all walks of life. The service life of cables directly affects production safety. The service life of cables depends on the oxidation induction time of the sheath material. The design service life of rubber sheathed cables is generally 20 years, but the actual service life is much longer. The most direct cause of cable aging is damage to the insulation layer. Many factors can lead to reduced cable insulation. Based on practical operating experience, the following situations are summarized. 1. Insufficient moisture resistance This situation is also common, usually occurring when directly buried in pipes or at cable joints. For example,
2020-11-25
21
2021-01
Cable: What do the colors on the wire and cable mean?
Everyone knows that the wires inside a cable have different colors. What are these colors for? Let me introduce the meaning of the colors on the cable below. Cable Sheath Color Regulations for Cable Conductor Sheath Colors National Standard: Yellow, green, red, and blue represent a, b, c, and n. When the circuit is marked by the color of the conductor: 1.1 Black: Internal wiring of devices and equipment. 1.2 Brown: Positive pole of DC system circuit. 1.3 Red: Three-phase circuit and C phase
2021-01-21
01
2021-02
Cable: Identification of low-smoke halogen-free power cables
Low-smoke halogen-free power cables, also known as environmentally friendly cables, are mostly used in hospitals and places with strict environmental hygiene requirements. The identification of low-smoke halogen-free power cables mainly lies in the identification of insulation materials. Based on different materials, it can be determined whether it is easy to burn, and whether it is a flame-retardant wire - ZRBV or a flame-retardant power system cable - ZRYJV... According to whether the enterprise has combustion, the color of the flame is identified; whether it smokes, and how much smoke is produced to analyze and judge whether it is a low-smoke halogen-free power engineering cable - WDZ-YJV. If so, identify the color of the smoke, such as: whether the smoke is clear smoke or...
2021-02-01
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