Overview of high/low voltage switchgear and controlgear

The use of complete sets of electrical equipment in the power system can improve the reliability of the operation of electrical equipment in the system and reduce the probability of failure. In the electrical complete set, all kinds of electrical equipment including circuit breakers can be assembled in a cabinet according to the designed electrical main wiring to form a complete set of electrical devices. For example, a variety of power distribution facilities are included in the power distribution cabinet, which improves the stability of the operation of the power distribution system in practical applications.

High and low voltage electrical switchgear sets of electrical equipment

First of all, electrical equipment is electrical equipment, and it is a class of switches, contactors, circuit breakers, and transformers. But it has its uniqueness, because it is a complete set, that is to say, a series of equipment are combined together through certain specifications (drawings, technical requirements, process requirements) to form an organic whole, such equipment is called electrical equipment. Usually, the switch cabinets and box-type substations we make are counted as electrical complete sets of equipment.

Electrical complete sets are widely used in the power industry. For example, electrical complete sets of power distribution cabinets are cabinets where electrical equipment is installed and have the function of protecting the electrical equipment installed inside. In power distribution substations, various types of power distribution facilities are neatly placed through complete sets of electrical distribution cabinets.

The use of electrical complete power distribution cabinets can first improve the aesthetics of power distribution equipment, and there will be no messy phenomenon. When a fault occurs in the power distribution system, it is also easy to find the fault, shorten the fault time of the power distribution system, and improve the efficiency of handling the fault of the power distribution system. Secondly, the use of electrical complete sets can ensure that the power distribution equipment will not be affected by dust, and improve the stable model and reliability of the operation of the power distribution equipment. Finally, by putting the power distribution equipment into the electrical complete set, it is difficult for other small animals to cause damage to the power distribution equipment, which is beneficial to ensure the safety of the power distribution system.

Electrical switchgear application

1. Electrical switchgear

Electrical switchgear is an important type of electrical switchgear and is currently used in many industries. There are certain problems in the structure of the current low-voltage switchgear. For example, there is no door limit mechanism on the door. Such a switchgear design will have certain problems in practical applications. Due to the wind blowing, the door will automatically close, causing unnecessary trouble.

2. High and low voltage complete cabinet protection device

The structural design theory of electrical complete sets has many different applications in practice, such as high and low voltage complete sets of cabinet protection devices, which include complete sets of cabinet bodies, high-voltage cabinet doors, cooling fans, dehumidifiers and low-voltage cabinet doors. There is a universal wheel at the bottom, a temperature sensor is installed on the inner side of the complete cabinet body close to the high-voltage cabinet door, and a humidity sensor is installed on the other side of the complete cabinet body close to the high-voltage cabinet door. The driving device is electrically connected, and a horizontal insulating partition plate is arranged at the connection between the high-voltage cabinet door and the low-voltage cabinet door. This device conducts heat dissipation and dehumidification through a cooling fan and a dehumidification device, which improves the efficiency of heat dissipation and dehumidification, and uses structures such as horizontal insulating partitions to achieve insulation, avoiding leakage damage or arcing between cabinets, etc., with metal resistors, etc. The structure reduces damage and improves safety, and the current detection device and other structures monitor the current in real time, which further protects the safety of the cabinet.

Development trend of drawer switchgear

1. Characteristics of high and low voltage complete sets of electrical equipment

High and low voltage complete sets of electrical equipment have the following characteristics:

(1) The shell of the complete set of electrical equipment is generally made of metal material, which can protect the electrical equipment in the cabinet well, and is not easily affected by external pollution during operation.

(2) The assembly speed of electrical equipment is fast, and the reliability in practical application is also high.

(3) The area required for complete sets of electrical equipment is also relatively small. At the same time, because complete sets of electrical equipment are designed and produced, it can well reduce the construction cost of the power distribution system and improve the operation efficiency of the power distribution system. economical.

Through these advantages of electrical complete sets of equipment, it can be seen that complete sets of equipment have higher technical requirements for manufacturers, and complete sets of equipment manufacturers, as intermediate enterprises, closely link manufacturers of electrical appliances, cabinets, parts, lines, etc. The electrical automation industry has become a complete and mature industrial chain, and electrical equipment manufacturers are also an important link in the future.

2. Development and application trend of electrical complete sets

The electrical complete set will develop in the direction of intelligence in the future, and has a high economy,

First of all, while reducing the manufacturing cost, improve the performance of the electrical complete set, and play a greater role in the regulation of system operation.

Secondly, in terms of the structural design of the complete set of electrical devices, according to the problems reflected in the actual application of the complete set of electrical devices, rational optimization design of the complete set of electrical devices will be carried out to solve the problems encountered in practical applications.

Third, with the increase of urban land value, it is necessary to carry out miniaturization research and development of complete sets of electrical installations, improve the integration of various equipment in complete sets of electrical installations, and meet the development needs of intelligent power systems. The application of complete sets of electrical devices can also make the equipment in the power system develop in the direction of modularization, which is convenient for the maintenance and operation of electrical equipment.

The electrical complete set has a long application history in the power system, and has played an important role in maintaining the safe and stable operation of the power grid. With the safe and stable operation of the system, the application range of electrical complete sets will be more extensive in the future.