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How to choose a vacuum circuit breaker has always been what electricians want to know. As a vacuum circuit breaker manufacturer and global supplier, Shaanxi Jiaerte Electric International Co., Ltd. will explain to you how to correctly select the vacuum circuit breaker under different occasions.

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A load break switch is an essential part of electrical engineering and power distribution that is made to create, carry, and break electrical circuit currents. It considers the safe and controlled detachment of electrical loads during normal activity or when problems arise. Service continuity, equipment protection from overload or short circuit damage, and overall system reliability all depend on this capability. Appropriation organizations, substations, modern plants, and environmentally friendly power frameworks all utilize load break switches. Electrical infrastructures' operational efficiency and safety are significantly improved by their capacity to isolate portions of a network for maintenance, repair, or troubleshooting. Engineers and technicians designing, maintaining, and operating electrical systems need to understand how 12kV Vacuum LBS-Fuse Composite Apparatus work and where they are used.

The vacuum circuit breaker is the main electrical equipment of the substation. Due to various reasons, the tripping fault of the vacuum circuit breaker often occurs during operation. The tripping failure of the vacuum circuit breaker has great harm to the safe operation of the system, because when the equipment fails, the circuit breaker refuses to trip, which will lead to leapfrog tripping, the loss of busbar voltage will cause the accident to expand, and even the system will collapse. Therefore, it is very important to quickly determine the reason and handling it correctly.

A load break switch (LBS), also known as a disconnect switch or isolator switch, serves a critical role in electrical systems. It is designed to safely interrupt currents in the circuit under normal or abnormal conditions. Here, we delve into the intricacies of load break switches, exploring their types, applications, and the underlying principles that govern their operation.

At 9:10 on April 8, 2007, when a 110kV fully automatic substation of Shixing Power Supply Bureau was making a routine inspection of the equipment during the shift shift, it was found that the 35KV321 vacuum circuit breaker made anintermittent abnormal "squeak" sound . After further observation, it was confirmed that It is phase C that makes the sound. The staff on duty used an infrared thermometer to check the C-phase electrical connection point, TA and the circuit breaker body. The temperature was about 16.5°C, which was the ambient temperature. No other abnormality was found in the appearance inspection of the circuit breaker. After that, the 321 vacuum circuit breaker was disconnected from the power grid and put out of operation, and at the same time, the engineering and technical personnel were notified to check and test on the spot, so as to ensure that the fault was solved in the shortest time and the normal power supply mode was restored.

Load break switches play a crucial role in electrical systems, enabling safe operation and maintenance. Understanding their functionality is essential for ensuring reliable power distribution and equipment protection. Let's delve into the intricacies of load break switches and explore their operation in detail.

What is a load switch?It is a control electrical appliance with a simple arc extinguishing device that can divide and close the circuit with load. It can turn on and off a certain load current and overload current, but cannot disconnect the short-circuit current. It must be used in series with a high-voltage fuse, and the short-circuit current can be cut off with the help of the fuse.