This paper mainly find the difference according to analysis the principle and structural features.
The flame retardant cable , which is the cable under the conditions of specified test, after burned the sample and removed the source of ignition, the spread scope can be controlled within the limits, also the residual flame can be extinguished itself within a limited time. And the basic characters of flame retardant cable is that the cable might not running well or even burnout when fire, but it can prevent the spread speed of fire. In other words, once the cable is fired, it can control the fire behavior within a local scope but not extend, so that we can prevent other equipments as much as possible to avoid causing a much more loss. The structural feature of flame retardant cable: It is a little different of the structure between the flame retardant cable and common cable, and the difference is the structure of flame retardant cable all or part adopt the flame retardant materials, such as the insulation layer, jacket, outer jacket cover and other auxiliary materials (wrapping tape and filler).
For the fire resistant cable, under the conditions of specified test, after the cable burned on the fire, the cable still can keep the line running well within a limited time. And what the basic characters of fire resistant cable is that the cable can keep the line running well within a limited time though the cable burned on the fire. In other words, once there was a fire, the cable can not be burnt at once, so that the loop is safe and protect our life and property security. The structural feature of fire resistant cable: it is almost the same of the structure between fire resistant cable and common cable. Only the conductor of fire resistant cable adopt the copper conductor with great fire resistance (the melting point of copper is 1083°C), and then add the fire resistance layer between the conductor and insulation. And the fire resistance layer is made of multilayer mica tape. Because there is a big difference of limited temperature for different mica tape materials, so that the key of the cables’ fire resistance is mica tape. And because of the feature of fire resistant cable, it is used more and more widely in many power equipment and electrical loop, such as the emergency power supply, fire fighting apparatus, fire alarm equipment, emergency power socket, emergency elevator electrical loop and so on.
As we said as mentioned above, the main difference between flame retardant cable and fire resistance cable is : the fire resistant cable can keep the power lind working well with a limited time, but the flame retardant cable not. So that the flame retardant cable plays a more and more important role in the modern urban and industrial construction, also it help we develop our country as much as possible.