The three-phase energy meter DTSU666-H from Huawei is used in conjunction with Huawei three-phase inverters to measure exported or purchased energy, control household consumption, or perform zero feed-in to the grid. If not purchased, it can only monitor the inverter's production.
The energy measurement is done indirectly using the included amp clamp, which, unlike direct measurement, does not require dismantling the wiring after the main cut-off switch for connection.
Includes:
- 3 250A/40A amp clamps 6m
- 10m shielded RS485 connection cable
For the installation of the Smart Power Sensor, wiring will be done from the inverter to the meter using the included shielded cable. If the length exceeds the 10m included, a shielded cable of 2x1.5mm2 should be used for the connection. This cable length can reach up to 1200m without losing signal. The meter will be powered in the same connection box as the phase and neutral. Then, the included amperometric clamps with 6m length will be connected, which can measure up to 100A, equivalent to 22kw. It is not recommended to extend the clamp wiring. The clamp will be placed before the main cutoff switch so it can read the total consumption.
Technical characteristics of the Three-phase Huawei Smart Power Sensor with indirect measurement DDTU666-H
Dimension (H*W*D) 100*72*65.5mm
Mounting Type DIN35 Rail
Weight 1.5 kg
Power grid type 3P4W
Input power (phase voltage) 176 Vac ~ 288 Vac
Self-consumption ≤ 0.8 W
Measurement current 0-100 A
Voltage (measurement accuracy) +/- 0.5%
Current (measurement accuracy) +/- 1%
Frequency +/- 0.01Hz
Communication interface RS485
Communication protocol Modbus RTU
Operating temperature -25ºC/60ºC
Storage temperature -40ºC/70ºC
Humidity 5%HR/95%HR
LCD Display Yes
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