The EA-03 is a professional device that goes beyond standard models (like the EA-01) by offering higher precision, expanded memory, and advanced analysis capabilities.

1. Key Technical Features

• High Accuracy Class: Generally measures at Class 0.5S or Class 0.2 accuracy (close to billing-grade precision).

• Advanced Harmonic Analysis: Can analyze individual components up to the 31st or 63rd harmonic, rather than just Total Harmonic Distortion (THD).

• Event Logging: Records network faults such as voltage sags, swells, and interruptions with time stamps in its memory.

• Large Internal Memory: Capable of long-term storage of electrical parameters (current, voltage, power) on the device (Data Logger feature).

  
  

2. Communication Capabilities

The EA-03 earns its "Advanced" title not only through measurement but also through connectivity:

• RS-485 Modbus RTU: Available as standard.

• Ethernet (TCP/IP) Support: Some versions allow direct network cable connection and monitoring via a web interface.

• Digital Inputs/Outputs: Can be used to monitor breaker positions or to disconnect the system during power thresholds.

  
  

3. Usage Advantages