1. Suit for distribution system below AC 650kV
2. CT input 1A or 5A settable
3. PT and CT settable
4. Setpoint alarm function
5. Up to 63rd harmonic analysis, THD
6. Wiring mode 1P2W, 3P3W, 3P4W
7. RS485/Modbus-RTU communication protocol
8. Energy accuracy Class 0.5s