What is SF6
Sulfur hexafluoride gas has excellent electrical insulation, electrical insulation ability is about 2.5 times of air, nitrogen. Sulfur hexafluoride gas has the very good arcing performance, its arcing ability is about 100 times of the atmosphere, and the chemistry of sulfur hexafluoride is very stable, so the sulfur hexafluoride are widely used as insulating gas, such as sulfur hexafluoride relay, sulfur hexafluoride high voltage circuit breaker, sulfur hexafluoride mutual conductance sensors, sulfur hexafluoride lightning rod, and so on.
The reason we should alarm SF6
Sulfur hexafluoride has become a new generation of insulating medium with good insulation and high voltage resistance after insulating oil. In many uses of sulfur hexafluoride gas, sf6 gas is mainly used in power equipment. Sulfur hexafluoride is a colorless, odorless gas that is difficult to detect after leakage. There are more sulfur hexafluoride gas in the power plant distribution room. Once the leakage exceeds the standard, it will cause great harm and increase its risk.
If the equipment of the sulfur hexafluoride gas insulated substation leaks sulfur hexafluoride and its derived gas, it is very likely to spread to the outdoors along the exhaust channel or other transmission path.
If the equipment is in operation process of sudden accident, can cause a large number of sulfur hexafluoride gas leakage, may endanger the health of maintenance personnel and surrounding residents, and cause serious environmental pollution, harm social stability!
The importance of SF6 alarm
Sulfur hexafluoride alarm is installed in the power plant, which is mainly used to detect the specific sulfur hexafluoride gas concentration value. It can monitor whether the SF6 leakage gas exceeds the standard 24 hours a day. The gas concentration of each detection point is displayed independently, and centralized control of multiple monitoring points can be achieved.
SF6 alarm is divided into two parts, one is the gas detector installed in the detection site, can be installed with sound and light alarm lamp to realize the scene alarm; The other part is the controller, installed in the duty room, sulfur hexafluoride leakage controller alarm to inform the duty room personnel. Sulfur hexafluoride alarm in the alarm at the same time can also linkage fan, exhaust fan, sprinkler device, through the switch upload PLC, DCS, fire control system, so that will eliminate sulfur hexafluoride poisoning accident in the bud.