2021-05-10

In the last hundred years, the earth's climate is undergoing a significant change with global warming as the main feature. This global warming is caused by both natural climate fluctuations and the greenhouse effect, which is enhanced by human activities. Reducing greenhouse gas emissions and mitigating climate change is the main goal of the United Nations Convention on Climate Change and the Kyoto Protocol, but China is facing more and more international pressure in reducing greenhouse gas emis

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2021-05-10

The SF6 Online Leakage monitoring and alarm instrument (WINFOSS-S1P) is composed of the monitoring host (including sound and light alarm device, human infrared voice sensor and touch display screen), SF6 and oxygen monitoring unit, temperature and humidity monitoring unit, fan control device, communication cable and host power cable, and background software. The monitoring host is connected to the monitoring unit through cables. The SF6 monitoring unit is equipped with foreign advanced infrared

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2020-10-14

The sealing test of sulfur hexafluoride gas equipment is to determine whether the annual gas leakage rate of the gas chamber is qualified by detecting the leakage amount of SF6 gas. The control standard is that the annual gas leakage rate of each independent gas chamber is not more than 0.5%; Two test methods and control standards are proposed in the provisions of the "Electrical Equipment Handover Test Standards" :

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2020-09-23

SF6 gas is almost the insulation and arc extinguishing medium in high voltage and ultra-high voltage circuit breakers and GIS. Pure SF6 gas is colorless, tasteless, non-flammable, and has particularly stable chemical properties at room temperature, which is more than 5 times the specific gravity of air. However, in the power system, SF6 gas mainly acts as insulation and arc extinguishing medium, under the influence of arc, partial discharge, high temperature and other factors, SF6 gas will decom

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2020-09-17

Sulfur hexafluoride gas is a colorless, odorless, non-toxic and non-corrosive compound. At normal temperature, it is a gas, a non-flammable body, and a non-metallic oxide with good chemical stability. Because sulfur hexafluoride gas has excellent chemical thermal stability, it will not be decomposed at 500 degrees temperature under the condition of ensuring purity. Due to its excellent insulation and arc reduction ability, even if the instantaneous decomposition and ionization occur under the ar

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2020-08-17

SF6 gas insulation strength is affected by the following factors: (1) Influence of electric field uniformity. Under a uniform electric field, the insulation strength increases linearly with the increase of the distance between contacts. When the distance is too large, the insulation strength increases and saturation occurs due to the uneven electric field. Under uneven electric field, its insulation strength will even approach the level of air.

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