After processing and filling each gas chamber to the manufacturer's demanded nominal rated filling density and checking the density value, the assembled gas insulated substation has to be tested. An initial verification is done to discover any and all gas leaks and ensure compliance with the defined maximum gas leak rate. These gas leak tests have to include all enclosure flanges, welds of containers, and all gas monitoring elements, gas valves, and interconnecting gas piping that have been assembled at the job site. The gas moisture content gas in each chamber has to be measured directly after installation and again at least five days after final filling. These verifications are to make sure that the moisture content does not surpass the defined maximum limits. The second test after five days is needed to take into account the possibility of moisture from elements internal to the GIS. The gas purity in each gas chamber needs to be measured directly after installation. These verifications are to make sure that any gas impurities (mostly air) do not surpass the defined maximum limits
Gas Analysis (for Gas-Insulated Breakers): Analyzes the composition of insulating gas (SF6) to detect leaks or contamination that could affect the breaker's performance. You can use the model ZH-H multiple SF6 gas analyzer and XP-1A Handheld SF6 Leak Detector(qualitatively), which made by HUAYI company.
SF6 comprehensive tester is a set of SF6 humidity, SF6 purity, and SF6 decomposition products tested in one.One field measurement can complete the detection of three indicators, which greatly saves the gas in the equipment, reduces the workload of the user, and improves the work efficiency. The SF6 multi analyzer has excellent performance because use the best foreign sensors; The humidity adopts a imported high-precision humidity sensor, the purity adopts a thermal conductivity sensor with temperature compensation, and the decomposition
products are also imported from Europe. Color LCD display, real-time display of various parameters, the whole touch
control, fool operation, mass information storage, built-in rechargeable battery, AC and DC dual use.