Fluke 1738/EUS Three-Phase Power Logger
The Fluke 1738/EUS is a measuring instrument for working with three-phase power supplies when you want to track how the system actually behaves over time. It records voltage, current, active, reactive and apparent power as well as energy, and it can simultaneously capture harmonics up to the 50th order. This makes it suitable for finding causes of load problems, investigating energy consumption, or gaining an overview of poor power quality.
This is particularly relevant in electrical panels, installations, and other places where data needs to be logged during operation and not just taken as a single measurement. With the included flexible current probes, it becomes easier to get around conductors, even in confined spaces. The built-in screen is used for field analysis, so results can be viewed directly on site without having to take the instrument back to the workshop immediately.
A practical detail is the Verify Connection function, which helps detect common connection errors before spending time on an incorrect setup. This is a great help in practice, because connection errors can easily lead to misleading data. The instrument can be powered directly from the measured circuit or via a standard power cord, making setup and use more flexible.
The 1738/EUS is well-suited for energy logging, troubleshooting three-phase installations, and measurements where voltage, current, and power conditions need to be documented over time. It is not an instrument for quick single tests, but for longer measurement sequences where a clear picture of load and power disturbances is needed.
Specifications
- Fluke 1738/EUS, advanced version of the Fluke 1738 power logger
- Comes with four 12-inch flexible 1,500 A current probes
- Includes WiFi/BLE adapter
- Automatically records RMS voltage and current
- Records active, reactive, and apparent power, as well as energy
- Records voltage and current harmonics up to the 50th order
- Captures event waveform snapshots and high-resolution RMS profiles
- 4.3” color LCD with touchscreen
- Verify Connection function for connection check
- Safety category 600 V CAT IV / 1000 V CAT III
- Can be powered directly from the measured circuit or via a standard power cord
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