What are the structures and operating principles of tube arresters?
The tube type arrester consists of three parts: the producing pipe and the outer clearance of the inner gap. The trachea can be made of fibrous material, organic glass or plastic. The inner wall gap is arranged in the inner part of the gas producing pipe, and an electrode is ring-shaped. The outer gap is between the tube type arrester and the live line.
Normally, it insulated the tube type arrester with live line.
The working principle of the tube type lightning arrester: when the line is struck by lightning, the atmospheric overvoltage makes the outer gap and inner gap of the pipe arrester break down, and the lightning flows into the earth. At this point, the power frequency continues to flow, and a strong arc occurs in the inner gap of the pipe. The material on the inner wall of the pipe is burned and a large amount of arc extinguishing gas is produced.
Because of the small volume of the tubes, the gases are so stressed that they blow out of the tube and blow strongly, and when the current goes through zero, the arc goes out. This is to restore the insulation of the air in the outer gap so that the tube type arrester is isolated from the system and the normal operation of the system is resumed.