[Japan] At a renewal of cubicle-type high-voltage substation, it was difficult to select an appropriate transformer capacity because the current load capacity was unknown.

[Iran] I work as technical safety and electrical inspection consultants, inspecting electrical installations in residential, commercial, healthcare, and industrial facilities. With my previous instrument, each time I performed an RCD test, I had to repeatedly select, configure, and run each test item manually, which made inspections time-consuming. In addition, the instrument did not feature Anti-Trip technology. As a result, RCDs would often trip unnecessarily during loop impedance testing, causing interruptions and further reducing inspection efficiency.

[Saudi Arabia] The previous methods used were complex, and there were also issues with measurement accuracy, as they required a combination of measurements and supplementary calculations to obtain results.