The ACR series network power meters from Acrel are designed for comprehensive power monitoring in industrial and utility applications. They measure all major electrical parameters, support four‑quadrant energy measurement and provide extensive communication options.
This manual covers product specifications, technical parameters, installation and wiring procedures, programming functions, and communication protocols. Safety notes and troubleshooting guidance are also included to help users correctly set up and operate the meters. This manual is written in Chinese.
| Measurement mode | Three‑phase three‑wire |
|---|---|
| Input voltage range | 100 V / 400 V |
| Power consumption | < 0.2 VA |
| Communication interface | RS485 |
| Communication protocol | MODBUS‑RTU |
| Analog output | 4‑20 mA |
The meter uses the MODBUS‑RTU protocol over an RS485 interface.
Up to 128 meters can be connected on a single RS485 bus.
Input voltage must not exceed 120 % of the rated 100 V or 400 V.
The meter consumes less than 0.2 VA.