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.

[Japan] A breaker unintentionally tripped, and identifying the cause was difficult.

[Japan] When testing transducers (convertors) in a distribution board, there are cases where the central monitoring system cannot be started up. In such situations, the output wiring of the transducer was disconnected and a digital multimeter was connected for measurement.  Similarly, when abnormal readings appeared on the central monitoring system on a board in operation, disconnecting the transducer output wiring during operation posed a high risk. Therefore, transducer testing was carried out during scheduled power outages to check for any malfunctions.