What are the product characteristics of low smoke halogen free flame retardant wires and cables

Characteristics of low-smoke halogen-free flame retardant wire - the tensile strength is greater than that of general PVC wire: the tensile strength of general PVC wire is greater than that of low-smoke halogen-free wire;

Low-smoke halogen-free flame retardant wire has good weather resistance (-30 105); Good softness (hardness of 80-90);

Non-shiftable (because no plasticizers are added to the formulation, there is no displacement); does not produce toxic black smoke when burned (a small amount of white smoke is produced); It has a high volume resistivity: PVC wire is generally 1012 1015 cm3, and low-smoke halogen-free wire is greater than 1016 cm3; (7)

It has good high-voltage resistance: PVC wires are generally resistant to more than 10kV, while low-smoke halogen-free wires are up to more than 15kV; (8) It has good elasticity and viscosity.

It is suitable for confined places with high flame retardant requirements and concentrated personnel.

Characteristics: 1. The rated voltage is 450 750V.

2. The long-term allowable working temperature of the current is 70 105 125 135.

3. The smoke concentration (light transmittance) test can meet the GB.

4. The halogen-free performance test meets GB.

5. The flame retardant performance meets the requirements of GB bunching combustion test class A, B and C.

6. The toxicity of flue gas meets the requirements of GA132 quasi-safety level.

7. The minimum bending radius of the wire is 6d.

Models include WDZ-BYJ, WDZ-RYJ, etc. Halogen-free, low-smoke and low-toxicity environmentally friendly wire and cable models: WDZ-BV, WDZ-RVS, WDZ-RVVP and so on.

Low-smoke halogen-free cable generally uses copper wire as the core, in the event of a fire, the wire sheath burns and can continue to be energized, transmit data, avoid data loss, and burn, no dripping, no black smoke, can increase the probability of escape by nearly 30%.

Feature: Low smoke halogen-free wire.

Low smoke: When burning, there is only a faint mist of water, and the visual distance is more than 60 meters.

Non-toxic: Does not contain any toxic substances.

Flame retardant: The wire is flame retardant through the irradiation cross-linking process.

Long life: anti-aging, life span of more than 100 years.

High temperature resistance: The maximum working temperature can reach 150 degrees.

Environmental standards: In line with EU and Japanese environmental standards.

Summary. 1. What are the models and specifications of low-smoke halogen-free flame retardant wires?

Common models are WDZ-BYJ flame retardant polyethylene wire, WDZ-KYJY flame retardant polyethylene control wire, WDZN-BYR flame retardant PVC flexible wire, WDZ-YJFY flame retardant irradiated cross-linked polyethylene cable, WDZB-BYJ that WDZ-BYJ flame retardant grade B and so on. Flame-retardant wires come in a variety of sizes, ranging from one square meter to several hundred square millimeters.

Second, what details should be paid attention to in circuit transformation.

1. When we carry out circuit transformation, we must make relevant plans in advance and determine the installation location of various electrical appliances. Before construction, the owner must go to the construction site to confirm again, so as to avoid the problem of less switch socket reservation or wrong location reservation, such as the kitchen would rather spare more sockets, at least 3 sockets should be prepared at the desk and so on.

2. When carrying out circuit transformation, construction should be carried out in strict accordance with the requirements. For example, there should not be too many wires in the same conduit, strong and weak wires should not be installed in the same trunking, the wires in the conduit should not have connectors, and if you want to connect wires, you should connect them in the junction box, etc. When we carry out line slotting, do not violently slot, so as not to damage the wall.

What is the model of LSZH flame retardant and fire-resistant cable?

1. What are the common models of low-smoke halogen-free flame retardant wires: WDZ-BYJ is flame retardant polyethylene wire, WDZ-KYJY is flame retardant polyethylene control wire, WDZN-BYR is flame retardant PVC flexible wire, WDZ-YJFY is flame retardant irradiated cross-linked polyethylene cable, WDZB-BYJ is WDZ-BYJ flame retardant grade B and so on. The flame retardant electric tung hole main line has a variety of specifications, and its size ranges from one square to several hundred square millimeters. 2. What details should be paid attention to in circuit transformation 1. When we carry out circuit transformation, we must make relevant plans in advance and determine the installation location of various electrical appliances.

Before construction, the owner must go to the construction site to determine again, so as to avoid the problem of less switch socket reservation or wrong location reservation, such as the kitchen would rather spare more sockets, and at least 3 sockets should be prepared at the desk. 2. When carrying out circuit transformation, construction should be carried out in strict accordance with the requirements. For example, the wire in the same wire tube should not be too much, the strong and weak wires cannot be installed in the same wire duct, the wires in the wire tube can not have connectors, if you want to connect the wires, you should connect them in the junction box, etc.

When we carry out line slotting, do not violently slot, so as not to damage the wall.

Structure. 3. When carrying out circuit transformation, we usually use various specifications of wires and switches. Before construction, we should check whether the specifications of the wires are correct.

For example, 4 square wires should be used for the air conditioning circuit, square wires should be used for the lighting circuit, and so on. The specifications of socket socks should also be selected according to the power of electrical appliances, for example, refrigerators can use 10A sockets.

This is my answer, I hope it is helpful to you, thank you.

Low-smoke halogen-free flame retardant cable is a special type of cable that has the characteristics of fire performance and environmental friendliness.

Due to the large number of halogen compounds contained in the jacket and insulating materials, traditional cables will produce a large amount of toxic smoke and corrosive gases when the cable is subjected to fire, which poses a serious threat to humans and the environment. LSZH flame retardant cables reduce the risk of fire by using a special combination of materials to reduce the amount of smoke and harmful gases generated during combustion.

The manufacturing materials of low-smoke halogen-free flame retardant cables are usually halogen-free flame retardant materials and low-smoke density materials. In the event of a fire, these materials can effectively slow down the spread of fire and reduce the density of smoke, which is helpful for personnel evacuation and fire rescue work.

In addition, low-smoke halogen-free flame retardant cables also have excellent characteristics such as high temperature resistance, wear resistance and chemical corrosion resistance, and are suitable for installation in crowded places, subways, hospitals, commercial buildings and other occasions that require high safety and environmental protection.

Low-smoke halogen-free flame retardant cable features:

1. Strong fire performance: low-smoke halogen-free flame retardant cable adopts special flame retardant materials, which can effectively prevent the spread of flames, reduce the production of smoke and toxic gases in the event of a fire, and reduce the damage to personnel and property losses caused by fire.

2. Low smoke density is not compromised: In the event of a fire, the smoke density generated by the combustion of low-smoke halogen-free flame retardant cable is low, which is conducive to the evacuation and escape of personnel, and increases the survival time and escape chance of personnel.

3. Halogen-free materials: Traditional cables usually contain halogen compounds, but low-smoke halogen-free flame retardant cables use halogen-free materials, which will not produce toxic halides and are more environmentally friendly.

4. High temperature resistance: low-smoke halogen-free flame retardant cable can maintain stable electrical performance in high temperature environment, not easy to melt or deform, and ensure the reliability of power transmission.

The difference is mainly in the outer sheath material of the cable. The insulation layer and sheath of halogen-free low-smoke flame retardant cable have better flame retardant characteristics, and the smoke emission of the cable is also small and the toxicity is low. **Halogen-free low-smoke flame retardant cables** are higher.

1. The flame retardant cable is a cable in which the sample is burned under the specified test conditions, and the spread of the flame is only within a limited range after the test ignition source is removed, and the residual flame or residual burning can be extinguished by itself within a limited time.

Its fundamental property is that it may be burned out and cannot operate in the event of a fire, but it can prevent the spread of fire. Generally speaking, in case of fire in the cable, the burning can be limited to a local range, so as not to spread, save other equipment, and avoid causing greater losses.

2. The insulation, sheath, outer sheath and auxiliary materials (tape and filling) of halogen-free low-smoke flame retardant cable are all or partially made of halogen-free cross-linked polyethylene (XLPE) flame retardant material, which not only has better flame retardant characteristics, but also has no halogen acid gas released when the cable is burned.

The smoke emission of the cable fiber state is also small, and the corrosive gas produced by the combustion of the cable is also a compromise between the flame retardant of the cable and the reduction of the amount of halogen acid gas. Its halogen content is about 1 3 of halogen-containing flame retardant cables. The amount of smoke produced is also close to the recognized "low smoke" level.

Data Development:

Clear concepts and advantages and disadvantages of flame retardant cables, halogen-free cables, and fire-resistant cables.

1. The characteristics of flame retardant cable are to delay the spread of flame along the cable so that the fire will not expand. Due to its low cost, it is a cable variety that is widely used in fireproof cables. Whether it is a single cable or a bundle of laying conditions, the cable can control the spread of flames within a certain range when burning, so it can avoid major disasters caused by fire and burning, so as to improve the fire level of cable routes.

2. The characteristics of halogen-free low-smoke flame-retardant cable are not only good flame retardant performance, but also halogen-free non-halogen-free cable material, low corrosiveness and toxicity during combustion, and a very small amount of smoke is produced, thereby reducing the damage to people, instruments and equipment, and is conducive to timely rescue in the event of a fire.

3. The fire-resistant cable can maintain the normal operation for a certain period of time under the condition of flame burning, which can maintain the integrity of the line. The amount of acid gas smoke produced when the fire-resistant cable is burned is small, and the fire-resistant and flame-retardant performance is greatly improved, especially when burning, accompanied by water spray and mechanical blows, the cable can still maintain the complete operation of the line.

Answer] :d this question examines cables. Halogen-free low-smoke cable refers to the rubber material made of halogen-free (F, CI, BR, I, AT), lead, cadmium, chromium, mercury and other substances, which produces less smoke and dust when burning, and does not emit toxic smoke, and is less corrosive when burning, so it has little harm to the environment.

Its characteristic is that it is easy to absorb moisture in the air (deliquescent): the result of tidal lapping is that the volume resistivity of the insulation layer decreases significantly.

The model of low-smoke halogen-free flame retardant fire-resistant cable is WDZN-YJY5*4. Halogen-free, low-smoke, low-toxicity and environmentally friendly wires and cables have superior flame retardant performance, little smoke during combustion, and no corrosive gas escape, which are widely used in nuclear power plants, subway stations, high-rise buildings, hotels, radio and television stations, important military facilities, oil platforms, etc., as well as places with high concentration of personnel and low air density.

Overview of the role of the cableThe function of the cable is to transmit electricity, and can transmit signals, or realize electromagnetic energy conversion, which is an electrical product. There are many types and specifications of it, first of all, when transmitting electricity, you can choose a kind of matching cable or power cable. If it is used to transmit signal information, you can choose a TV cable or a fiber optic cable, as well as a local telephone cable.