Ambient humidity required to fill sulfur hexafluoride gas
Published on:2018-01-10 Click：228
As long as the small partners who have used sulfur hexafluoride gas know that the gas is very important to the control of moisture.If the moisture is high,it will cause corrosion damage to sulfur hexafluoride equipment and affect the working effect.So when filling SF6 gas,why should we put forward specific requirements on the ambient humidity?What should be paid attention to when charging?
Moisture is a condition for SF6 equipment to produce toxic substances.If sulfur hexafluoride gas contains more than the specified moisture,when its humidity changes,it may condense on the solid insulating surface and make the surface moist.In this case,the discharge voltage along the surface of the equipment will drop significantly.
When SF6 gas in the arc and corona under the action of decomposition generated low fluorine compound gas,if there is no water molecules this external condition is not generated SO2,HF and other harmful substances,so as to avoid corrosion of equipment produced by them.Therefore,when filling SF6 equipment with gas,strict measures must be taken to prevent water from entering.
(1)Before the filling of sulfur hexafluoride gas,the relative humidity of the ambient air around the site should be measured to be less than or equal to 80%(that is,the percentage of water vapor density in the air and the ratio of saturated water vapor density at the same temperature),which is the specific indication of water content in the***air.If the determination is not qualified,measures should be taken or re-selected dry and sunny weather for filling.
(2)Sulfur hexafluoride manufacturer in order to make SF6 leakage gas timely replacement,the main tip in the charging at the same time open the fan,carefully comply with the air SF6 content shall not exceed 1000ppm.Within a certain time after the start of the work should be tested,and specific conditions in the middle of the test side.When the SF6 gas content increases or exceeds the standard,the parts should be immediately inspected in detail to find the cause and eliminate it.
