2019-05-14

SF6 switch is a high voltage appliance widely used in power system. The reliable operation of SF6 switch has become one of the concerns of the power supply department. SF6 gas density relay is an important component used to monitor SF6 gas density change in SF6 switch body. Its performance directly affects the safety of SF6 switch operation. SF6 gas density relays running in the field often have inflexivity and poor contact after a period of time due to infrequent action, and some also have poor

2019-02-28

SF6 circuit breaker is one of the main electrical equipment in substation. It can not only cut off and connect high-voltage lines and various no-load and load currents during the normal operation of the system, but also automatically, quickly and reliably cut off various overload currents and short-circuit currents through the role of relay protection devices to prevent the occurrence and expansion of the accident range.

2019-02-26

SF6 molecules are easy to adsorb free electrons and form negative ions, which have strong electronegativity. However, under a certain electric field, it is difficult for these ions to accumulate enough energy to ionize the gas. At the same time, because the free electrons in the gas are reduced, the harm of these electrons easily causing the gas to be broken down is also reduced. Therefore, SF6 gas has good insulation performance, and the insulation strength of SF6 is 2-3 times greater than that

2019-02-26

Sulfur hexafluoride gas is widely used in high voltage electrical equipment because of its high electrical strength and good thermal stability. The chemical properties of sulfur hexafluoride gas are extremely stable. Pure sulfur hexafluoride gas is non-toxic, but when the high current is broken, due to strong arc discharge, some low fluoride containing sulfur will be produced. These substances have a strong reaction ability, and when there is water and oxygen, they will further react with electr

2019-02-25

pressure gauge (English name :pressure gauge) refers to the elastic element as a sensitive element, measuring and indicating higher than the environmental pressure of the instrument, the application is very common, it is almost all industrial processes and scientific research fields. It can be seen everywhere in the fields of heat pipe network, oil and gas transmission, water supply and gas supply system, vehicle maintenance factory and so on. Pressure gauge is an instrument that is used to meas

2019-02-24

SF6 Gas leak detection method SF6 gas is an insulating gas commonly used in high voltage switches. However, sf6 gas is a kind of gas prohibited by the Kyoto Agreement, which seriously damages the atmosphere. Of course, if there is leakage in the high voltage switch, it will reduce its insulation capacity. Therefore, the leakage detection of sf6 gas is particularly important. At present, there are many common SF6 gas leak detection methods, and each method has its advantages and disadvantages,