Many people tend to confuse high temperature resistant cables and fire resistant cable, but the two are actually very different in a word, that is: fire resistant cables, emphasizing explosive, even if it is on fire, it must operate normally; high temperature resistant cables, emphasizing continuity, high temperature environment can continue to operate normally. As one of the typical representatives of special cables, the general high temperature resistant cable's high temperature resistance is less than that of fire resistant cables, but it has good flame retardant, waterproof, corrosion resistance, and other properties. If the fire-resistant cable is a particularly prominent partial talent, then the high-temperature cable is a more excellent all-rounder.

High temperature resistance

High temperature resistant cables usually refer to cables that can normally transmit signals or electrical energy at temperatures of 180°C and above. High temperature cable itself has good high temperature resistance; due to the use of a new shell material, it has strong insulation and high temperature resistance to ensure that the cable in the high temperature environment works properly. However, it should be emphasized that this temperature often refers to the temperature of its internal conductor, and under normal circumstances, when the temperature of the internal conductor of the cable reaches a high tolerance range, its external temperature is relatively low, about thirty degrees. Never consider the extreme conductor temperature inside the cable to be the extreme ambient temperature that it can tolerate. It must be noted that in the extreme value of high temperature tolerance, the general high temperature resistant cables are not as good as the fire resistant cables. The long term continuous working temperature of high temperature resistant cables is generally 125 degrees, 135 degrees, 150 degrees, 180 degrees, 200 degrees, and 250 degrees (90 ~ 155 degrees and below the cable generally refers to heat-resistant cables). For fire resistant cables, the minimum requirements are also required to be able to withstand combustion for at least 90 minutes at 750 °C ~ 800 °C flame and rated voltage without breakdown of the cable (that is, a 3A fuse does not blow).

Fire resistance

The insulation material used in high temperature resistant cables is able to withstand high temperatures, and its flame retardant is particularly good. Such as fluorine plastic insulated wire and cable, which can even be applied to atomic reactors; silicone rubber insulated wire and cable, whose working temperature range is -60°C ~ 180°C; that is to say, it is also resistant to low temperatures. The "leading big brother" in the high temperature cable is the inorganic material ultra-high temperature cable. The conventional working temperature is 250 °C, but according to the selection of different materials, it can also be made into a working temperature of 500 °C, 800 °C, or even 1000 °C. In addition, high temperature-resistant cables often also have armors, such as steel tape armors and steel wire armors, plus the insulation materials used are able to withstand high temperatures, and their flame retardant is naturally stronger.

Comprehensiveness

High temperature cable also has excellent water resistance, oil resistance, strong acid resistance, strong alkali resistance, strong oxidant resistance, and corrosion resistance. You know, petrochemical, steel, aerospace, shipbuilding, military, pharmaceutical, food, plastic machinery, boilers, and other heat and high temperature-related industries are high temperature cable applications. These environments are often high temperature, high humidity, and corrosive, and high temperature-resistant cables that need to work continuously in this environment must naturally have excellent performance in response to these environments.