Explosion-proof distribution box is designed to ensure the safety of the equipment in the later period

China's explosion-proof electrical appliance industry started in the 1950s and has experienced more than 50 years of development. Now it has formed a relatively market-oriented market environment and a relatively complete R&D, design, standards, manufacturing and inspection system. In particular, since the reform and opening up, China's explosion-proof distribution box products industry has developed rapidly. Both product varieties and technology levels have made great progress, and an explosion-proof electrical industry system has been established to meet the needs of China's economic development and development. The rapid development of petroleum, chemical and other industries has made tremendous contributions. At present, the overall level of explosion-proof distribution box products in China has greatly shortened the gap with the international advanced level, and some products have approached or caught up with the international advanced level. In general, , China's explosion-proof electrical industry and product quality is good, or has great potential for development.

With the explosion of explosion-proof distribution box applications, people are increasingly demanding the use of explosion-proof distribution boxes, especially the use of equipment safety performance, and there are many factors that affect the safety of equipment, there are reasons for the product itself, There are also reasons for late-stage user operations. Next, Xiao Bian analyzes what requirements should be met during the design phase of the explosion-proof distribution box to ensure safety.

1. Use range: The inside of the box can be reasonably distributed to facilitate the remote operation of factory equipment. Rational design of the circuit system can increase the worker's productivity and maximize the protection of the equipment. At the same time, the interior of the box is also easy to repair. The cabinet can be used in Zone 1 and Zone 2. Classes a and III I explosive gases. According to the requirements of different environments, we can design and customize. This product is explosion-proof structure, steel plate welded shell, surface electrostatic spraying.

2. Technical requirements: The cabinet shall be designed in accordance with the design requirements of the circuit breaker equipment, measuring instruments, protection devices and auxiliary equipment in the closed cabinet to form a low-voltage power distribution system. When it works normally, it can be operated by an external handle or electric switch. When the fault or abnormal operation, use the panel indicator alarm, the box can display the operating parameters of the equipment through the electrical instrument.

The safety of the explosion-proof distribution box and the environment in which the equipment is used are also inseparable. We know that the low-voltage electrical equipment in the explosion-proof distribution box consists of fuses, AC contactors, residual current protection devices, capacitors and meters. These low-voltage electrical appliances are designed and manufactured in accordance with GB1497 "Basic Standards for Low-Voltage Electrical Appliances" and their normal working conditions are stipulated accordingly: The upper limit of ambient air temperature does not exceed 40 °C; the average value of ambient air temperature 24h does not exceed 35 °C. The lower limit of ambient air temperature is not lower than -5°C or -25°C. The distribution box is running outdoors. It not only receives high temperature from direct sunlight, but also generates heat during its operation. Therefore, in the high summer season in midsummer, the temperature in the cabinet will reach 60°C or more. At this time, the temperature greatly exceeds Due to the ambient temperature specified by these appliances, malfunctions due to overheating of electrical components in the distribution box can occur.