2016-01-27

The insulation materials in SF6 circuit breakers are SF6 gas, thermosetting epoxy resin (made of insulators and tie rods), polytetrafluoroethylene, etc. SF6 gas, thermosetting epoxy resin, polytetrafluoroethylene has good thermal stability, when the temperature exceeds 500 degrees Celsius will begin to decompose, 700 degrees Celsius will be obvious cracking. For the normal operation of the SF6 circuit breaker in the open, its internal temperature is not higher than 80 degrees Celsius, the insula

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2016-01-27

Generally speaking, the decomposition products in SF6 electrical equipment refer to the fault gases and products generated by the cracking of SF6 gas and solid insulation materials in the equipment under the action of fault energy when SF6 electrical equipment fails.

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2016-01-22

A: SF6 laser imaging leak detector is mainly composed of laser emission system, laser cooling system, low light level electric receiving system, signal conversion amplification and processing system, display unit and power supply. The advantage of SF6 laser imaging detector is that it can detect leaks when SF6 electrical equipment is running, and it can detect very small leaks quickly and far away.

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2016-01-22

SF6 gas has excellent insulation properties, in a relatively uniform electric field, its insulation strength is about 2.5 to 3 times that of air, and its insulation strength can reach the level of insulating oil in 3 gauges. The factors that affect its insulation strength are as follows:

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2016-01-18

Since the containers used are made of glass and operated under vacuum, special attention must be paid to safety. The container bottle must be tested before use. In order to improve the pressure resistance of the gas cylinder, the spherical glass container bottle should be used. During the test, in the process of vacuuming and filling SF6 gas, the outside of the bottle should be protected.

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2016-01-16

At present, there are many varieties of leak detectors in the field, and various detection methods of the leak detector mainly use SF6 as a negative electric gas, which has the characteristics of absorbing free electrons to form negative ions. The measurement principles of commonly used leak detectors include ultraviolet ionization detection, electron capture detection, vacuum high frequency ionization detection, negative corona discharge detection, laser imaging detection, etc.

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