High temperature resistant cable: continuous normal operation under continuous high temperature

Many people tend to confuse high-temperature cables with fire-resistant cables

But there is actually a big difference between the two

In a word, that is:

Fire-resistant cables, emphasizing "explosiveness", all efforts, only for

- Even if there is a fire, it must function normally

High temperature resistant cables, emphasizing "continuity", all prepared, just for

——High temperature environment continuous normal operation

As one of the typical representatives of special cables

The general "high temperature" resistance of high-temperature cables is not as good as that of fire-resistant cables

But it has good flame retardancy, waterproof, corrosion resistance and other properties

If fire-resistant cables are a particularly prominent "partial talent" in a homework

That high-temperature resistant cable is an excellent "all-rounder"

First of all:

High temperature resistance

High-temperature resistant cables usually refer to cables that can transmit signals or electrical energy normally at temperatures of 180°C and above
.

The high-temperature cable itself has good high temperature resistance, due to the use of new shell materials, it has super heat insulation and high temperature resistance can ensure that the cable works normally in
a high temperature environment.

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 very high withstand range, its external temperature will be relatively low by about thirty degrees
.
Never consider the extremes of the conductor temperature inside the cable as the extremes of the ambient temperatures it can tolerate
.

It must be noted that in terms of the extreme value of high temperature tolerance, the general high temperature resistant cable is not as good as the fire-resistant cable.

The long-term continuous working temperature of high-temperature resistant cables is generally 125 degrees, 135 degrees, 150 degrees, 180 degrees, 200 degrees, 250 degrees (cables of 90~155 °C and below generally refer to heat-resistant cables).

Fire-resistant cable, the minimum requirement is also to be able to withstand combustion for at least 90 minutes under the flame neutralization rated voltage of 750 °C ~ 800 °C without the cable being broken down (that is, the 3A fuse does not blow
).

Secondly:

Flame retardant

The insulation material used in high-temperature resistant cable is able to withstand high temperature, and its flame retardancy is particularly good
.

Such as fluoroplastic insulated wires and cables, can even be applied to atomic reactors; Silicone rubber insulated wire and cable, the working temperature range is -60 °C ~ 180 °C, that is to say, it can also withstand low temperature
.

The "leading big brother" in the high-temperature resistant cable - inorganic material ultra-high temperature cable, the normal working temperature is 250 °C, according to the selection of different materials can also be made into a working temperature of 500 °C, 800 °C, or even 1000 °C cable
.

In addition, high-temperature resistant cables often have armor, such as steel belt armor, steel wire armor, plus the insulation materials used are able to withstand high temperatures, and their flame retardancy is naturally strong
.

At last:

Comprehensive

High temperature resistant cable also has excellent waterproof, oil, acid, alkali, oxidant and corrosion resistance

You know, petrochemical, steel, aerospace, shipbuilding, military, pharmaceutical, food, plastic machinery, boilers and other industries related to heat and high temperature are all application places
for high-temperature cables.

These environments are often high-temperature, humid, and corrosive, and high-temperature resistant cables that need to work continuously in this environment must naturally have excellent performance
to cope with these environments.