2017-05-15

Recently, Shu Yinbiao, chairman of the State Grid, said at the China International Economic Exchange Center - Paulson Foundation 2017 Annual Meeting on Sustainable Development that the construction of the "Belt and Road" is the top priority of the internationalization strategy of the State Grid Corporation at present and in the future.

2017-05-15

The toxicity of sulfur hexafluoride gas mainly comes from five aspects: 1, some toxic products of sulfur hexafluoride gas in electrical equipment when the high-temperature arc occurs. 2, sulfur hexafluoride products are not pure, containing highly toxic low sulfur fluoride, hydrogen fluoride and other toxic gases when leaving the factory. 3, the sulfur hexafluoride gas and decomposition in the electrical equipment react with the electrode (CU-W alloy) and metal materials (AL, Cu) to produce some

2017-05-15

SF6 gas has a century-old history, it is two French chemists Moissan and Lebeau synthetic artificial inert gas in 1900, around 1940, the United States military used it for the Manhattan Project (nuclear military). Commercially available in 1947. At present, SF6 gas is mainly used in the power industry. SF6 gas is used in 4 types of electrical equipment as insulation and/or arc extinguishing; SF6 circuit breakers and GIS (in this case, sulfur hexafluoride enclosed combination appliances, internat

2017-05-15

Procedure for Electric Power Equipment Handover and Preventive Experiment is an important standard used in electric power production practice and scientific experiment. According to the basic spirit of DL/T "Preventive Test Regulations for Power Equipment" and GB 50150-2006 "Electrical Equipment handover Test Standard for Electrical Equipment Installation Engineering" and GB 12022-2006 industrial sulfur hexafluoride standard, revised in combination with the newly promulgated national standards,

2017-05-15

SF6 leak detector is an effective inspection tool for SF6 electrical equipment leak detection, and it is necessary to use the instrument in the handover and overhaul. And we have to detect the leakage of the switch every year, and make the corresponding SF6 electrical equipment leakage report is an essential workflow.

2017-05-14

SF6 gas density relay working principle 1.SF6 gas density relay is a SF6 gas package sealed outside the bellows 1 and connected with the SF6 gas in the circuit breaker. Through the lever 6 with shaft 5 as the support point, it is compared with the standard gas package 3 sealed outside the bellows 2 to drive the electric contact 4 of the micro switch to realize its signal and lock function.