High temperature resistant cable generally refers to high temperature resistant wire and cable. High temperature resistant wire and cable is a cable that can normally transmit signals or electrical energy under high temperature. High temperature cable (high temperature cable) has excellent properties such as high temperature resistance, low temperature resistance, acid and alkali resistance, oil resistance, non-combustion, etc. It is widely used in petroleum, chemical, electric power, metallurgy and other national pillar industries and major infrastructure projects in high temperature and harsh environments. Transmission lines for electrical appliances, instruments, and automatic control systems. For petrochemical, steel, aerospace, shipbuilding, military, pharmaceutical, food, plastic machinery, boilers and other industries related to heat and high temperature, wires and cables that can withstand a certain high temperature are required. High temperature resistant wires and cables are required to ensure the safe operation of their power and signals. Therefore, how to choose high temperature cables becomes very important.
The selection of high-temperature and high-temperature cables needs to be noted that ordinary wires and cables use plastic and vulcanized rubber as insulating protective wire covers. These raw materials are basic construction materials and have a variety of sources. Large-scale production can be considered, and the cost is relatively low. However, for some special industries such as petrochemical equipment, steel, aerospace, shipbuilding, military, and pharmaceutical industries, wires and cables must be able to withstand a certain high temperature. Generally, wires and cables are obviously not applicable, and wires and cables that can withstand heat must be available. Ensure the safe operation of power engineering and data signals.
The International Organization for Standardization (IEC) level requirements for high temperature insulation are usually divided by: heat resistance class (YAEBFHC) high allowable operating temperature/c90105120130155180180. Commonly used wire and cable insulation and protective wire coverings are epoxy resins based on vulcanized rubber and plastics for general engineering projects, but the insulation grades are specified. Common plastic materials for cables are: stub vulcanized rubber, ethylene, natural adhesives, chlorosulfonated high pressure polyethylene, etc. The working temperature is (60 ~ 75). Common plastic raw materials for cables are polyethylene, high-pressure polyethylene (including high-density polyethylene), polypropylene, etc., and the working temperature is (70 ~ 90). It's not hard to see that this cable is not a harsh and practical high temperature or high temperature cable.
High temperature cables generally refer to cables below (90~155), and high temperature wire and cables are cables above 180. To deal with the situation that ordinary cables cannot be heat-resistant, it is necessary to improve raw materials or apply heat-resistant insulation grade raw materials.