KGJ-150

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The KGJ-150 multi-function protection device is a new gas-insulated switchgear equipment designed and developed by Shandong Electric Research Institute. It represents the highest level of development of domestic multi-function switchgear technology at present, and has become an important equipment for realizing reliable and safe power transmission and transformation. It has the advantages of small size, light weight, low consumption, high breaking capacity, high reliability and long life. This article will discuss the application field and working principle of the KGJ-150 multi-function protection device.

Application Field
KGJ-150 multi-function protection device has a wide range of applications and can be used in power supply, power plant, grid operation, power transformation, communication and other project automation system. Specifically, it can be used for overload, short-circuit and grounding protection of all low-voltage, medium-voltage and high-voltage power transmission and transformation equipment. In addition, it can also be used for mobile switching, line maintenance and flame obstacles such as fault finding, component replacement, and so on. KGJ-150 multi-function protection device also has the advantages of time control, over-current protection and over-temperature protection. Therefore, it can be used in many fields such as industry system, life system, electric heating system and other automatic control system, which plays an important role in many aspects of automation.

Working Principle
The working principle of the KGJ-150 multi-function protection device is based on the principle of current limiting. When an over-current fault occurs in an electrical network, the current passing through the device exceeds the value set by the protection device. At this time, the protection device will immediately cut off the power supply of the line or part of the line after receiving the signal, so as to automatically realize the protection. In addition, it also has the function of pre-warning, which can predict the occurrence of faults, allow equipment to switch in advance, reduce the loss caused by fault current, and further improve the safety of the power system. At the same time, the device also uses electronic components such as thyristor and silicon rectifier to accurately detect the gas temperature of the switchgear, when the temperature is too high, the built-in thermistor will send a signal to the device, so as to realize the cooling, protect the equipment, and extend the service life.

In conclusion, the KGJ-150 multi-function protection device combines a variety of functions such as current protection, pre-warning and temperature control in one to realize the whole process safety control of power system. Its application field covers almost all electrical equipment, and it plays an indispensable role in the safe operation of whole system, which is worthy of the recognition of people.

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