Hinge of metering box door against short circuit: guarantee of safety and durability
I. Introduction
With the rapid development of power grid construction and the improvement of power facilities in China, all kinds of new electrical equipment are widely used in power system. Among them, the anti-short circuit metering box, as one of the security devices in the power system, has a direct impact on the quality of power supply and the safety of people's lives and property. The door hinge is one of the important parts of the anti-short circuit metering box, which is of great significance to ensure the safe and stable operation of the metering box.
Second, what is the anti-short circuit metering box door hinge?
Anti-short-circuit metering box door hinge is a kind of hardware used to connect the door panel of metering box with the box frame. It realizes the opening and closing movement of the door panel relative to the box frame through the hinge seat fixed on the box body and the hinge arm installed on the door panel. At the same time, in order to prevent accidents caused by electric shock or short circuit, this kind of hinge is usually made of insulating material and has certain fire prevention function.
Third, the design principle of anti-short circuit metering box door hinge
1. Hinge structure design: In general, the door hinge of short-circuit prevention metering box is mainly composed of metal hinge seat and plastic hinge arm. Wherein the metal hinge seat is responsible for fixing the whole hinge device on the box body; The plastic hinge arm uses its own elastic characteristics to complete the opening and closing of the door panel. This design method can not only effectively reduce the production cost, but also improve the overall strength and durability.
2. Insulation treatment technology: In order to avoid current leakage caused by poor contact, the manufacturer will coat the surface of the plastic hinge arm with a coating material (such as PTFE) which has good insulation performance and is not easy to wear, so as to achieve good electrical isolation effect.
3. Application of fire-retardant materials: In special occasions, in order to ensure that the fire safety requirements are met, some high-end products will be made of PP plastic with high flame retardant grade, thus making the whole product light and has excellent thermal stability.
4. Sealing and waterproof measures: For the outdoor short-circuit prevention metering box, how to avoid the internal circuit damage caused by rainwater intrusion has become one of the urgent problems to be solved. Therefore, waterproof factors should be fully considered in the design, and rubber rings or other sealing elements should be set at appropriate positions to prevent moisture from entering.
Fourth, the application field of anti-short circuit metering box door hinge
1. Urban residential areas: At present, residential buildings in major cities in China need to be equipped with a certain number of public electricity metering devices, and these devices are often concentrated in closed small rooms, which requires the use of anti-short circuit metering boxes and their accessories-door hinges.
2. Industrial places: such as power distribution cabinets in various factories and workshops, such products can often be seen, because they can effectively protect operators from the threat of electric shock.
3. Public facilities area: including but not limited to parks, schools, hospitals, shopping malls and other places, such items can be found in all occasions involving power distribution management.
V. Conclusion
In a word, as an important electric auxiliary equipment, the door hinge of anti-short circuit metering box has a direct bearing on the safety of every link in people's life and work. Therefore, in the process of purchasing, we must pay attention to the selection of products produced by regular manufacturers and install and debug them in strict accordance with relevant standards, so as to better play its due role!
Rec. Prods.
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