If you are using a 3P PowerTag NSX on a 3P+N system please check that: 

• you have connected the white wire to the Neutral of your panel

• the Electrical Network System is defined as 3PH4W under your Smartlink or PowerTag Link Web Interface

Are there any other possible reasons?

Apart from the aforementioned issues with wiring and system settings, the following reasons might also cause NaN values to appear on the PowerTag NSX 3P:

1. Sensor failure or damage:

• The internal sensors of the PowerTag NSX device may malfunction or be damaged, preventing accurate measurement or transmission of data, resulting in NaN values.

2. Communication problems:

• There may be issues with communication between the device and the monitoring system (such as Smartlink or PowerTag Link), such as signal interference or communication line failures, leading to incorrect data transmission or interpretation.

3. Software or firmware issues:

• Bugs or version incompatibility problems may exist in the software or firmware of the device or the monitoring system, causing data processing errors or abnormal displays.

4. Power supply problems:

• Unstable power supply or poor power quality to the device may result in abnormal operation, including errors in data measurement and transmission.

5. Environmental factors:

• The environment in which the device is located may have adverse factors such as strong electromagnetic interference, high temperatures, or humidity, affecting the normal operation of the device and data accuracy.

6. Configuration errors:

• In addition to electrical network system settings, there may be other configuration errors, such as conflicts in device address settings or improper parameter settings, leading to incorrect data display.

7. Load issues:

• If the circuit load monitored by the device is abnormal (such as overload or short circuit), it may prevent the device from operating normally or result in measurement errors.