1) Flame retardant wire and cable flame retardant refers to block and delay the spread of the flame along the wire and cable, so that the fire does not expand, this type of cable has self-extinguishing ability after fire. Flame retardant cable according to the national experimental standard (GB12666-99) can be divided into three grades: ZRA, ZRB, ZRC. In the general product naming, ZRA is usually indicated by GZR, which is called high flame retardant cable or oxygen barrier cable or high flame retardant oxygen barrier cable.

ZRC stands for ZR in general flame retardant products. Flame retardant cable is to maintain the electrical and physical and chemical properties of ordinary cables at the same time, with self-extinguishing, that is, it is not easy to burn, or when the cable itself is on fire for some reason or an external fire source is ignited, the cable no longer continues to burn after the fire is extinguished, or the burning time is very short (within 60 minutes), or the burning length is very short.

Halogen free flame retardant cable has the advantages of low toxicity, low smoke and halogen free compared with halogen containing flame retardant cable. The flame retardant level is not high, basically Class C. The reason is that the energy efficiency of halogen free radicals is greater than that of non-halide flame retardants.

The oxygen barrier flame retardant technology is mainly filled with a layer of inorganic metal hydrate between the cable insulation core and the outer sheath of the cable, which is non-toxic, odorless and halogen-free white glue. Without changing the cable structure and material original parameters, it can be applied to low, medium and high voltage power cables, control cables and communication cables, and make the cable flame retardant Class A.

2) Fire-resistant wire and cable

Fire resistance refers to the operation of a certain period of time in the case of flame combustion, wire and cable that maintain the integrity of the circuit, this type of cable has a certain time of power supply ability in the flame.

Fire-resistant cable according to the national experimental standard (GB12666-99) can be divided into two grades: NHA, NHB; In the general product naming, NHA is usually represented by GNH, which is called high fire resistant cable. NHB is expressed as NH in general refractory products.

Fire-resistant cables can continue to work (transmit current and signals) in the event of a fire, and whether they themselves are burned or not is not included in the assessment. The flame-retardant cable stops working quickly in the event of a fire, and its function is that it is flame resistant and can self-extinguish without spreading.

The fire-resistant cable can maintain normal operation for 180 minutes at 750~800℃ flame combustion.

Fireproof cable is actually another type of fireproof cable. It is made of copper as a conductive wire core, seamless copper tube as a sheath, and inorganic mineral magnesium oxide as insulation materials.

Because the whole is composed of inorganic materials, the entire fireproof cable does not burn, nor does it burn. And it can withstand fire. The test shows that: in the flame of 800~900℃ for 2 hours, the cable has been normal power operation, burning under the flame of 1000℃ for 30 minutes is still intact, continue to operate normally. The normal working temperature of wire and cable is generally 250℃, which can operate safely and reliably.

In addition, such fireproof cables are also known as mineral cables (internationally known as Ml cables).

Qingdao Tianxing Cable Co., Ltd. focus on supporting wire and cable production customization manufacturers, main: exports to more than 40 countries and regions around the world, the annual production capacity of 1 billion yuan. 6000 square meters of storage, standing hundreds of millions of inventory, order demand for rapid distribution and delivery, large prices more favorable. Qingdao cable manufacturer hotline: 16678668098