Fire Resistance Mineral Insulated Cable
1.According to national standards, fire-resistant wire and cable fire test method characteristic test, According to GB 12666.6 Class A, burn in fire with flame temperature 950Degree, apply voltage of 750V between phase and phase and between phase and outer sheath, it should be able to withstand for 90min without breakdown.
Class B, bun in fire with flame temperature 750-800degree, apply voltage of 750V between phase and phase and between phase and sheath, it should be able to withstand for 90min without breakdown.
2.According to the BS6378, flexible fireproof cable satisfies the following requirements:
Class A 650degree 3h
Class B 750degree 3h
Class C 950degree3h
Class S 950degree 20min
Electrical characteristics of flexible fireproof cable
1.Rated voltage: 0.6/1kV;
2.Rated working voltage: light load 500V, heavy load 750V;
3.Rated current: single-core 25A-1 ,800A; multi-core 16A-500A;
4.Insulation resistance: insulation resistance≥1000M.km.
Cable length less than 100m, then the insulation resistance≥10000M;
5.Power frequency withstand voltage: apply voltage of 2,000V and 2,500V between phase and phase as well as phase and copper sheath of cables of 500V and 750V respectively, they should be able to withstand for 15min without being broken down.
Table 1. Structural dimension of cable
Table 2. DC resistance of cable conductor and copper sheath at 20degree
Table 3. DC resistance of cable conductor at 90°C and sheath
package 4:6 (this package is use for big size cable.)
Which package as you wish.
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