HUAWEI Smart Power Sensor DDSU666-H – Single-phase smart power meter | 100A / 40mA | RS485 | External current transformer (CTF16-2K5-100)

Huawei Smart Power Sensor DDSU666-Hissingle-phase smart electricity meter, intended foraccurate measurement and monitoring of electrical energyin solar systems and smart energy solutions.
It is part of the ecosystemHuawei FusionSolarand serves formeasurement of two-way energy flow– from the network to the system and vice versa.

The sensor usesexternal current transformer CTF16-2K5-100 (100A / 40mA), which allowssafe and easy installationwithout interrupting the electrical circuit.
The data is transmitted toHuawei invertersorSmart Energy ControllerthroughRS485 interface (Modbus RTU), providinghigh accuracy, fast response and reliable communication.

Main advantages

• Class 1 accuracy– guarantees precise measurement of current, voltage and energy.

• Two-way energy metering– suitable for systems with batteries and inverters.

• RS485 communication (Modbus RTU)– stable and compatible connection with all Huawei inverters.

• LCD display– easy to read, displays all key electrical parameters.

• Energy efficient– own consumption below 1 W.

• Compact design and DIN mounting– suitable for boards with limited space.

• Work in extreme conditions– from -25°C to +60°C and humidity up to 95%.

• Compatible with Huawei Smart PV Controller and FusionSolar platformfor intelligent energy management.

The set includes

• ✅ 1 × HUAWEI Smart Power Sensor DDSU666-H

• ✅ 1 × External current transformerCTF16-2K5-100 (100A / 40mA)

• ✅ 1 × RS485 communication cable (10 m)

• ✅ Installation and configuration guide

Compatibility

• Single-phase Huawei inverters:

  • SUN2000-2KTL-L1 / 3KTL-L1 / 3.68KTL-L1 / 4KTL-L1 / 4.6KTL-L1 / 5KTL-L1 / 6KTL-L1

  • SUN2000-8K-LC0 / 10K-LC0

• Three-phase Huawei inverters:

  • SUN2000-M1 / MAP0 / MB0

• Huawei Smart Energy ControllerandFusionSolar Cloud Platform

Warranty

• 2 years standard warranty

• Service and supportfrom an authorized Huawei partner

HUAWEI DDSU666-His reliable, compact and intelligentenergy sensorfor single-phase systems, providingaccurate monitoring and management of energy flowin solar and hybrid installations.

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

✅ Device Type:Single-phase smart power meter (Smart Power Sensor)
✅ Model: DDSU666-H
✅ Network Type:1P2W (single phase, two wires)
✅ Rated voltage: 176 – 288 V AC
✅ Rated current: 0 – 100 A
✅ External current transformer:CTF16-2K5-100 (100A / 40mA, 5m cable)
✅ Accuracy Class:±1% (power / energy), ±0.5% (voltage)
✅ Frequency: 50 / 60 Hz
✅ Consumption: ≤ 0.8 W
✅ Communication: RS485 (Modbus RTU, 9600 bps)
✅ LCD display:Yes - shows current, voltage, power, energy, etc.
✅ Operating temperature:-25°C to +60°C
✅ Storage temperature:-40°C to +70°C
✅ Relative humidity:5% – 95% (non-condensing)
✅ Dimensions (H x W x D): 100 × 36 × 65.5 mm
✅ Weight (with cables): ~1.2 kg
✅ Installation:DIN35 rail
✅ Degree of protection:IP51 (for panel mounting)
✅ Appliance consumption: ≤ 1 W

Additional information