CASE STUDY

[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.

[Spain] When performing fault diagnosis on electrical installations during the construction and repair of residential and commercial facilities, we used instruments such as multimeters, voltage testers, and clamp meters. However, we often could not perform sufficiently thorough diagnostics and had to rely on trial and error, experience, and intuition. Particularly in areas with a large number of aging residential and commercial facilities, it was necessary to respond to numerous electrical problems throughout the year. Accurately and efficiently identifying the cause of a fault was a significant challenge. In addition, when the cause could not be identified, it was often necessary to replace part or all of the equipment, resulting in additional time and cost burdens for customers.

[Lithuania] Before introducing the Kyoritsu KEW 6305, we had problems with electrical measurements because we used old instruments with limited functions. We often needed several devices and setups to get the overall situation, which made troubleshooting slow, and sometimes unstable issues were missed and not caught. Measurement accuracy was not always consistent, especially with changes in load. Also, setup in different locations took too much time and slowed down our daily testing work.

[Syria] We faced time-consuming measurements due to the need for manual range selection, as well as difficulty working in tight spaces (e.g., in crowded electrical panels). Additionally, we sometimes experienced concerns about accuracy and safety with our old equipment.

[India] Over the past 15 years, we have been operating as an engineering consultant specializing in services such as safety audits and electrical failure analysis. Our work includes the regular inspection and evaluation of electrical systems across a wide range of facilities. As part of these routine audit activities, accurate measurement of loop impedance is essential. However, since many of the systems are protected by Residual Current Devices (RCDs), conventional testing methods can cause unintended tripping, leading to operational disruption. Therefore, we require a reliable solution or instrument capable of measuring loop impedance without tripping the RCD. This capability is critical to ensure efficient, non-intrusive testing on systems that are in operation and to maintain continuity in the audit process.

[Japan] A recorder we already owned was used to identify circuits with leakage current, but it was cumbersome to operate.