ACREL Single Phase Wireless Energy Meter with External CT
ACREL Single Phase Wireless Energy Meter with External CT is a compact single-phase energy meter with external CT measurement, Wi-Fi communication and RS485 connectivity. The D10 version supports measurements up to 120 A and is designed for applications including photovoltaic systems, energy storage systems and other power monitoring installations. It provides forward and reverse active energy measurement together with electrical parameter monitoring, helping users monitor power flow and support anti-backflow control.
The ACREL Single Phase Wireless Energy Meter with External CT is part of Acrel's ADL200W series of single-phase energy meters with external current transformers.
The meter is designed for DIN-rail installation and has a compact 1P, 18 mm format. It can measure electrical quantities including voltage, current, active power, reactive power, apparent power, power factor and frequency, while supporting forward and reverse active energy measurement.
How it works
- The meter measures the electrical system through an external current transformer and direct voltage connection.
- It calculates electrical parameters and energy based on the measured voltage and current.
- Forward and reverse energy measurement allows power flow to be monitored in both directions.
- Wi-Fi and RS485 communication allow measured data to be used with compatible monitoring, inverter or energy management systems.
Why choose this product
- Compact DIN-rail format: The 1P, 18 mm design helps conserve panel space.
- External CT measurement: The D10 version supports measurement up to 80 A while D16 version supports measurement up to 120 A without requiring the measured current to pass directly through the meter.
- Wireless communication: 2.4 GHz Wi-Fi is provided for wireless data communication.
- Power-flow monitoring: Forward and reverse energy measurement is useful for applications where imported and exported energy need to be distinguished.
Benefits
The combination of external CT measurement, compact DIN-rail installation and wireless communication makes the ADL200W suitable for integrating electrical measurement into space-conscious monitoring systems.
Its 50 ms power response rate can provide rapid updates of measured power for applications requiring responsive monitoring.

