[Japan] For electrical installation inspections, we had to carry both a simplified earth resistance tester and a low-voltage insulation resistance tester, leaving both hands occupied.

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

[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.