Quality of high-end switchgear

Not afraid of trouble, our current switchgear has cancelled the originally excellent design for industrial production and cost reduction. If a separate low-voltage compartment is assembled separately, the secondary wires below are connected separately, lifted onto the cabinet, and assembled, it is not only beneficial for wiring personnel to operate and improve the working environment, but also to improve the quality of wiring and enhance the seismic resistance of the secondary compartment.

There is also the double air box of the inflatable cabinet. Previously, the double air box was two separate air boxes connected by a connector, and there was a gap between the two air boxes. When one of the air boxes failed, it could be removed and replaced. Nowadays, the dual gas box has become a gas box with a plate welded in the middle for separation and a sleeve installed, but it is not actually separated. Two independent air boxes with increased external contact surface are beneficial for heat dissipation and reducing temperature rise. If the air box is damaged, it can be replaced. The current one no longer serves the original design purpose.

And truly high-quality switchgear is achieved from the perspective of product design, pursuing ultimate functionality and safety. The ventilation design of switchgear is not simply about opening a few louver holes.

Currently, the vast majority of mid mounted cabinets in China have lost their original product design features. Some of the technical requirements and considerations for technical details that were originally developed have been lost with large-scale production. In order to reduce costs, continuously simplify processes, and reduce thickness and other dimensions, switchgear has become an assembly machine that can be saved by purchasing cabinets, interlocks, and so on, rather than a branded machine.

And excellent brand switchgear also maintains its own unique shell and mechanism of production. The material quality is controllable and the process is strictly controlled. Like corner connections, with a large number of bolts and high strength.

Not afraid of trouble, requiring meticulous metalworking, never cutting corners, understanding the situation, understanding the reasons, constantly optimizing design, improving design processes, and continuously improving.

Most manufacturers only need to connect the copper bars without optimizing their insulation, temperature rise, and dynamic thermal stability. The excellent quality switchgear copper bars are vertically arranged. Although the design and manufacturing are relatively complicated and may increase the length of the copper bars, the refined design not only improves the current carrying capacity and standardizes the manufacturing process, but also enhances the quality and improves the performance in terms of insulation and short endurance systems.

High quality components, high-voltage contact boxes, and other voltage shielding materials were initially formed using aluminum plates, but later developed into mesh plates. Due to the ease of mesh plate production and better bonding through epoxy resin casting, the disadvantages are also very obvious. The mesh plate shape is poorly fixed and biased towards one side, which affects insulation performance. The mesh plate has sharp tips and is prone to partial discharge. Mesh forming can achieve good adhesion with epoxy resin through optimized design, surface sandblasting, and other treatments.

Refinement, whether it is framework construction or busbar connection, all achieve refinement.

High quality surface treatment, conventional standard parts such as bolts and nuts cannot meet the 48 hour salt spray test. Buying standard parts for secondary electroplating and quality control can meet the 168 hour salt spray test. More and more factories are purchasing electroplated copper bars, which are then cut, punched, and directly used in engineering project switchgear. However, high-quality manufacturers still choose bare copper bars, which are processed in the factory and then silver plated on the overlapping surface according to project requirements to ensure the thickness and quality of silver plating. That's the difference.