It shows in real time how much energy enters and leaves the house, so that the installation can regulate itself. Indirect measurement with 3 clamps of 100 A, accuracy ±1%, DIN rail mounting.
The smart meter is the eye of the energy installation: it sits in the electrical panel and continuously tracks how much energy comes in from the grid and how much goes back into it. Based on this reading, the inverter or the car charging station knows how much more it can consume without exceeding the available power of the supply. The particularity of this model is that the thick wires of the connection do not have to be cut: the measurement is made with three clamps called current transformers, which are fitted onto the cables and read the current from the outside.
The three 100 A transformers are included, with a 5 m cable, and for the data link with the inverter or with the charging station you get a 10 m cable in the package, so in most panels you no longer need additional accessories. The device clips onto the DIN rail of the panel, weighs about 0.7 kg with the accessories and has an LCD screen on which you directly see the voltages, the currents, the active and reactive powers, the frequency and the imported or exported energy. The accuracy is class 1, that is a deviation of at most ±1%, and the series' own consumption stays below 1 W, so it is not felt on the bill. It works on three-phase installations of up to 100 A and can also be used on a single-phase supply. In practice, it is the one that makes the Huawei charging station reduce its own current when the house consumes a lot and the SUN2000 inverter able to limit the energy sent into the grid.
Accepted networks: 3P4W and 3P3W, with possible use also in a single-phase configuration; indirect measurement through 3 current transformers 100 A/40 mA (5 m cable). Accuracy class 1, the series' own consumption below 1 W, LCD display for voltages, currents, active/reactive powers, frequency and import/export energy. RS485 communication in Modbus RTU protocol, default speed 9600 bps, 10 m RS485 cable supplied in the package. Mounting on a 35 mm DIN rail, mass of the assembly with accessories approx. 0.695 kg; integration with Huawei SCharger/FusionCharge stations for dynamic power management and with SUN2000 inverters for export limitation.
Suitable for a three-phase installation of up to 100 A, in a panel where the main busbar cannot be interrupted, in a house with a Huawei charging station or with a SUN2000 inverter that must limit export.
| Network type | Trifazat 3P4W / 3P3W; utilizabil și monofazat |
|---|---|
| Current measurement | Indirectă, prin 3 transformatoare de curent 100 A/40 mA incluse (cablu 5 m) |
| Maximum current | 100 A |
| Accuracy class | Clasa 1 (±1%) |
| Communication | RS485, Modbus RTU, 9600 bps implicit |
| Mounting | Șină DIN 35 mm |
| Display | LCD |
| RS485 cable included | 10 m |
| Weight (with accessories) | cca. 0,695 kg |
Series-level specifications — valid for the product family
DTSU666-FE is a Huawei Smart Power Sensor with indirect measurement, intended for three-phase networks (3P4W and 3P3W) and also usable in a single-phase configuration. The current does not pass through the meter, but is read through three current transformers of 100 A/40 mA supplied in the package, with a 5 m cable. This solution allows mounting in existing panels without interrupting the main conductors and is indicated where the connection busbar cannot be sectioned.
The measurement accuracy is class 1 (error within ±1%), and the series' own consumption is below 1 W. The meter displays on the LCD voltages, currents, active and reactive powers, frequency and imported/exported energy. Communication is over RS485 in Modbus RTU protocol, the default speed being 9600 bps; a 10 m RS485 cable is included in the package.
The main application is dynamic power management: the meter continuously measures the power at the connection point and transmits the value to the Huawei charging stations (SCharger / FusionCharge) for automatic adjustment of the charging current according to the house load, as well as to the SUN2000 inverters for export limitation. Mounting is on a 35 mm DIN rail, the weight of the assembly with accessories being about 0.7 kg.
The module that gives a Huawei inverter internet through a SIM card, where the fixed network does not reach. It plugs into the USB port, serves up to 10 inverters, IP65.
The meter that tells the Huawei inverter how much the building consumes, so that it does not send current into the grid. Three-phase, up to 250 A per phase, through the included current transformers.
The single-phase meter that measures at the connection point what comes in and what goes out, so that the Huawei inverter can limit the injection into the grid. Direct connection up to 100 A, consumption below 1 W.
See exactly how much energy comes into the house and how much goes out to the grid: a single-phase panel meter, as wide as two fuses, measuring directly up to 100 A and sending the data over Modbus.
