Product Categories

Contact Us

Add: No.38 South Taoyuan Road, Yaozhuang Town,Jiashan County, Jiaxing City, Zhejiang Province, China
Contact person: Elva Zhuang&Sunny Ni
Tel:+86-573-84775555
Fax:+86-573-84776699
Phone:+86-13732570078
E-mail:sales9@great-relay.com
       sunny.ni@great-relay.com

current-transformer

Home > News > Content
Water Cut And Super Standard Treatment Of SF6 Gas For Mutual Inductor
May 31, 2018

In operation SF6, when the water content of the transformer exceeds the standard, dehydration should be carried out:

(1) prepare dry SF6 gas and containers for recycling gas.

(2) the gas recovery device is connected to the self sealing inflatable joint on the transformer body and the SF6 gas in the transformer is recovered.

(3) start the gas recovery and treatment device, treat the recovered SF6 gas until the water content and other indicators are qualified so that it is ready to be reused.

(4) to clean up the residual gas in the mutual inductor, connect the vacuum pump to the self sealed air charging joint on the transformer body, vacuum to the residual pressure 133Pa, continue to 0.5h, and then use the dry nitrogen to wash it many times, and the residual gas should be pushed through the adsorbent treatment tongue and put to the place where the personnel are not safe.

(5) take out the adsorbents in the mutual inductor and send the drying treatment in the drying furnace and dry 2H above the temperature of 450 ~ 550. In order to prevent the moisture absorption, the dry adsorbents should be installed in the mutual inductor as soon as possible in the 15min.

(6) vacuum leak detection to the transformer, evacuated to the residual pressure of about 133Pa, close the gas inlet valve immediately, and keep the 4H to measure the residual pressure of the transformer, and the difference between the initial pressure and the final pressure should not exceed 133Pa. If it does not meet the requirements, the leakage of the transformer should be dealt with.

(7) fill in the SF6 gas to the transformer, gradually open the valve of the gas recovery treatment device, slowly fill the qualified Sf6, gas to the transformer. Because of the gas loss in the recovery process of the sF6 gas, the new SF6 gas should be reused with the standard requirement to the transformer until the rated pressure is reached. The actual pressure at that time can be found according to the sF6 pressure and the temperature characteristic sign on the transformer. The water content of SF6 gas was measured after static 4H. If the standard requirement is not met, the treatment process should be inspected and reprocessed until qualified.


Add: No.38 South Taoyuan Road, Yaozhuang Town,Jiashan County, Jiaxing City, Zhejiang Province, China
Contact person: Elva Zhuang&Sunny Ni
Tel:+86-573-84775555
Fax:+86-573-84776699
Phone:+86-13732570078
E-mail:sales9@great-relay.com
       sunny.ni@great-relay.com