HUAWEI Smart Power Sensor DHSU1079-CT - Smart three-phase power meter (250A/50mA) with RS485 and 3 CT transformers

The Huawei DHSU1079-CT is a smart three-phase electricity meter (electric quantity sensor) designed for accurate measurement and monitoring of electricity consumption in photovoltaic systems and industrial installations. The sensor supports current measurement up to 250 A via external transformers (CT), RS485 communication, high accuracy (±1%) and DIN rail mounting. It is suitable for three-phase 3-wire and 4-wire systems.

Measured parameters:

• Imported/exported active energy (kWh);

• Total active power (kW);

• Phase voltages (Ua, Ub, Uc);

• Phase currents (Ia, Ib, Ic);

• Active power by phase;

• Power factor (PF) – total and by phase;

• Mains frequency (Hz).

Installation and connection:

Supported schemes:

• Three-phase 4-wire (3P4W);

• Three-phase 3-wire (3P3W).

Connection:

• Voltage: Ua, Ub, Uc, Un;

• Current: IA*/IA, IB*/IB, IC*/IC;

• Communication: RS485 A/B.

The set includes:
3 CT transformers 250A/50mA;
RS485 cable (10 m);
Device Huawei DHSU1079-CT;
Installation Guide.

Warranty:

2 years standard warranty

Applications:

Smart energy metering in PV systems;
Suitable for Huawei SmartLogger and inverters;
Precise tracking of energy flows;
Compatible with grid and hybrid systems.

We inform you that, despite our efforts, we cannot guarantee that the published information and photos do not contain inaccuracies or errors that cannot be a legal basis for claims.

Technical characteristics:

✅ Rated voltage: 230/400V AC, 50/60 Hz
✅ Current measurement range: 0–250 A
✅ Accuracy of measurement: Class 1 (±1%)
✅ Measure by:3 CT transformers (included) - 250A/50mA
✅ Communication: RS485 (Modbus RTU)
✅ Baud rate:1200–115200 bps (default: 9600)
✅ Operating temperature:from -25°C to +60°C
✅ Installation:DIN rail, 35 mm
✅ Dimensions: 99.3 x 72 x 66 mm
✅ Certification: CE, RCM, UKCA

Additional information