Huawei DTSU666-H 250A Smart Power Sensor

3-phase Smart Power Sensor
176-288 Volt Voltage
Accuracy class > 1
Easy operation via LCD display
Power consumption ≤1 W
Communication via RS485

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Why you should choose a Smart Power Sensor DTSU666-H
from Huawei now.
The Huawei Smart Power Sensor DTSU666-H is a three-phase current sensor for use in solar power systems. The component processes a voltage of 176 to 288 volts and impresses with a very low power consumption of less than one watt. Installation is simple, easy and effortless. Once the sensor is integrated, it displays the performance data via the built-in LCD screen and can also be operated effortlessly via it. In addition, the Huawei Smart Power Sensor DTSU666-H supports communication via RS485, so it can also be read out from another location. It uses the Modbus RTU communication protocol for this purpose.

Another outstanding feature of the current sensor is its enormous precision. The measurement accuracy of the voltage is +/-0.5 %, for the frequency the fluctuation is 0.01 Hz, current, power and energy are measured by the sensor with a maximum deviation of +/-1 %. This ensures that the sensor is classified in accuracy class >1. The other technical data should also be noted. The sensor is housed in a 100 x 72 x 65.5 mm case and weighs 1.5 kg, calculated including cabling. This allows a space-saving accommodation of the compact element. The possible operating temperature is between -25 °C and +60 °C, the component tolerates a relative humidity of 5 % to 95 %. Current can be measured up to 250 A. The scope of delivery includes three folding current transformers with 5 m cable length and an RS485 cable with 10 m length.

Huawei Smart Power Sensor DTSU666-H – General Data
Operating temperature range: -25°C ~ +60 °C
Relative humidity: 5 % RH~ 95 % RH
Dimension (W x D x H): 100 x 72 x 65.5 mm
Mounting type: DIN35 rail
Weight (including cable): 1.5 kg
Power system type: 3P4W (3-phase)
Input voltage: 176 VAC~288 VAC (phase / N)
Power consumption: ≤ 1 W
Communication: RS485

Huawei Smart Power Sensor DTSU666-H – Communication
Interface: RS485
Baud rate: 9,600 bps
Communication protocol: Modbus-RTU

Huawei Smart Power Sensor DTSU666-H – Measuring range
Line voltage phase-phase: 304 Vac ~ 499 Vac
Phase voltage: 176 Vac ~ 288 Vac
Current: 0 ~ 250 A

Huawei Smart Power Sensor DTSU666-H – Measurement Accuracy
Voltage: ±0.5 %
Current/ Power/ Energy: ±1 %
Frequency: ±0.01 Hz

Huawei Smart Power Sensor DTSU666-H – Environmental Conditions
Operating temperature: -25 ℃ ~ +60 ℃
Storage temperature: -40 ℃ ~ +70 ℃
Operating humidity: 5%RH ~ 95%RH (non-condensing)

Huawei Smart Power Sensor DTSU666-H – included in delivery
3x folding current transformer (5 m cable length)
RS485 (10 m cable length)


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