CASE STUDY

[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.

[Cyprus] Previously, measurement results had to be recorded manually, making data management and report generation time-consuming. In addition, I didn’t have a single instrument that could perform continuity, insulation resistance, earth resistance, and RCD tests.

[Japan] We used to disconnect cables to test signal converters, which was time-consuming and required a lot of effort.

[Japan] There was an installation job for an EV/PHEV charger, but although it was installed, we were unable to verify whether the charger was functioning properly, so we had to confirm proper operation using the customer’s PHEV.

[India] With our existing multimeters, we frequently experienced issues with erroneous readings, which reduced the reliability of electrical diagnostics during powertrain testing and sometimes even led to misleading conclusions. In addition, the manual range-selection knob required us to repeatedly switch between voltage ranges during testing, making the process slow and cumbersome, and significantly decreasing our overall efficiency.

[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.

[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] Insulation faults occurred frequently throughout a Japanese traditional inn (ryokan). Since the lighting distribution boards were located in dimly lit areas, it made measurements and inspection work difficult.

[Japan] During periodic inspections of manufacturing equipment, we measured current values; however, the measurements were not performed continuously. As a result, we were unable to capture the characteristics of the current, which limited our ability to make effective use of the measurement data. In addition, because the current involved was small AC current, we assumed that high-accuracy measurement would not be possible and had given up on obtaining reliable data.