Refractory cable refers to the flame combustion cases can keep a certain time safety operation of the cable. Will fire resistance test points A, B two level, A level flame temperature 950 ~ 1000 ℃, continuous for fire time 90 min, class B flame temperature 750 ~ 800 ℃, continuous for fire time 90 min, the whole test period, sample should be under the provisions of the product rated voltage value. Refractory cable is widely used in high-rise buildings, underground railway, underground street, large power station and the important industrial and mining enterprises, and concerning to fire security and its lifesaving place, for example, fire fighting equipment and emergency wizard lamp and so on emergency facilities of the power supply circuit and control circuit.
K5460-5 s powder bronze mica tape for fire - resistant cables is made with mica paper backing. Both sides strengthen non alkali glass cloth, silicone adhesive bonding together. The heat index is C.
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