Explosion-proof cable specifications and application features

With the rapid development of industrial automation in China, explosion-proof cables are used as power supply equipment for communication, monitoring, detection, alarm and control systems in the production process. Explosion-proof safety power supplies are mainly used in coal mines, petroleum, chemicals, textiles and coal mines and other mixture mixtures. . What kind of cable is called "explosion-proof cable"?

The circuit is short circuited or sparked, and it is not enough to ignite the surrounding flammable and explosive gases. Such a circuit is called an intrinsically safe safety circuit. The cable used is called “explosion-proof cable”. Explosion-proof cables are characterized by low capacitance, low charge storage, good shielding and antistatic properties. The explosion-proof safety power supply circuit must meet the requirements of the explosion-proof safety circuit standard. At present, explosion-proof safety products and standards have formed a relatively complete system.

There are many manufacturers of explosion-proof cables and their quality is uneven. Explosion-proof cables use the environment and details of the occasions to avoid economic loss. The types of explosion-proof cables include control cables, signal cables, computer cables, and coaxial RF cables. Under normal operating conditions, an explosive gas mixture cannot be ignited when there is a fault or two faults in the circuit. In the IA type circuit, the operating current is limited to less than 100mA, suitable for use in chemical, oil refining, ships, etc.

IB rating: In normal operating conditions, and when there is a fault in the circuit, the explosive gas mixture of olefins cannot be spotted. In the IB circuit, the operating current is limited to 150mA and is suitable for mines and explosion-proof equipment.

Another type of explosion-proof cable is used for coal mine fire-retardant explosion-proof cable, must have mine product safety mark certificate product, m level: product coal mine power cable, coal mine signal cable, coal mine shearer cable, coal mine steel wire armored cable, Coal mine steel wire braided cables are suitable for use in coal mines, vertical wells, inclined shafts, and wellbore.

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