Smart meter Huawei Three-phase 250A SmartPS-250A-T0

Detailed technical characteristics of the Huawei Smartps-250A-T0

The kit Smartps-250A-T0 it is supplied with one of these four meter models: DTSU666-H 250A / 50mA, , YDS60-C24, , DTSU71 or DHSU1079-CT. All share electrical, precision and communication specifications; The dimensions, weight and storage temperature vary according to the model.

General Specifications

• Type of assembly: Lane DIN35
• Dimensions (at x an x PR:) 99 x 36 x 66 mm at 101 x 36 x 66 mm according to model (DTSU666-H: 100 x 36 x 65.5 mm; YDS60-C24: 101 x 36 x 66 mm; DTSU71 and DHSU1079-CT: 99 x 36 x 66 mm)
• Weight: of 0.248 kg to 0.3 kg according to model (DTSU666-H: 0.3 kg; YDS60-C24: 0,285 kg; DTSU71: 0,248 kg; DHSU1079-CT: 0.26 kg)
• Screen: LCD

Feed

• Type of network: Three-phase, 3p3w / 3p4w
• Input voltage: 230 V CA (Phase) / 400 V CA (Line)
• Own consumption: less than 1.5 W

Rank

• Line voltage: 90 to 500 V CA
• Phase tension: 176 to 288 V CA
• Current: 0.5 to 250 a (DTSU71 and DHSU1079-CT: 0 to 250 a)

Measurement accuracy

• Precision class: Class I
• Current and voltage: ± 0.5%
• Power and energy: ± 1%
• Frequency: ± 0.01 Hz

Communication

• Interface: RS485
• Protocol: Modbus-RTU
• Transmission speed: 4800/9600 (by default) / 19200/115200 baud

Environmental conditions

• Operating temperature: -25 at +60 ° C
• Storage temperature: -40 to +85 ° C (DTSU666-H, YDS60-C24 and DHSU1079-CT) or -35 to +70 ° C (DTSU71)
• Moisture of operation: 5 to 95% HR, without condensation

Kit content

• Smart meter three-phase (one of the four indicated models)
• 3 current transformers (CT) of 100 A / 40 mA
• RS485 cable of 10 m

Benefits of the smart meter Huawei Smartps-250A-T0

In a three-phase installation, the energy is not distributed uniformly: each phase feeds different loads and may be importing while another export. For the photovoltaic system to manage the surplus, the battery and the injection limitation, you need measure the three phases simultaneously and precisely. That is exactly what the Huawei Smartps-250A-T0.

Three-phase measurement of up to 250 A

With a current range of 250 A and compatibility with networks 3P3w (without neutral) and 3P4w (with neutral), the SmartPS-250A-T0 covers from supply housing three-phase until shops, ships and small industries with high hired powers. The wide range of line voltage 90 to 500 V CA, it provides margin against the fluctuations of the network.

Class I reliable readings

Your class I accuracy, with ± 1% in power and energy, guarantees that the inverter receive exact data to apply the zero, adjust the exported power or decide when to load and download the battery. In larger facilities, a small measurement error translates into kilowatt hourly managed each month, so accuracy has a direct impact on profitability.

Standard Communication RS485 Modbus-RTU

The communication by RS485 protocol Modbus-RTU it offers a robust connection against interference, ideal for industrial electrical panels. The configurable speeds of 4800 to 115200 baud and the 10 m cable included facilitate installation although the inverter be away from the general picture.

Compact and efficient

With only 36 mm wide for assembly lane DIN35 and a consumption lower than 1.5 W, the meter occupies very little space in the box and barely consumes energy. The lCD screen it allows to review the readings and configuration parameters during start-up and maintenance.

Meter applications three-phase self-consumption

The meter is installed in the connection point with the network and record the energy in both directions in each of the phases. With that information, the system can:

• Apply zero pouring or limit the exported power, something usual in industrial self-consumption without surplus compensation.
• Manage storage in systems with inverters hybrid and lithium batteries, prioritizing your own consumption.
• Monitor of each phase and detect consumption imbalances.
• Calculate savings and the degree of self-consumption of the installation.

Installation of current transformers

The 3 current transformers from the kit are placed, one per phase, around the drivers of the rush, without the need to cut the main wiring. It is essential respect the order of phases and the meaning of the current indicated in the Installation Manual, since an inverted CT or a cross-stage provoke erroneous import and export readings.

¿Single-phase or three-phase?

The Smartps-250A-T0 is designed for supplies three-phase. If your installation is 230 v single-phase, the right model is the Huawei Smartps-100A-S0, which measures 100 A in networks 1P2W. Choosing the meter according to the supply type is essential for the system to regulate correctly.

Buy the Huawei Smartps-250A-T0 in Tienda Solar

On Tienda Solar we help you complete three-phase self-consumption facilities with all its components: inverters solar, , solar panels, storage and measurement accessories and monitoring. To deepen the zero dump configuration or in the systems design three-phase with battery, visit the Blog Tienda Solar, with technical guides and advice of our specialists.

Frequently Asked Questions (FAQ)

1. What is the difference between a 3P3W and 3P4W network?

Net 3P4W it has three phases and neutral, which is the usual in housing and shops with supply three-phase to 230/400 V. Net 3P3W it has three phases without neutral, more common in some industrial facilities. The SmartPS-250A-T0 is compatible with both.

2. What meter model includes the kit?

Huawei provide one of these four models: DTSU666-H 250A / 50mA, , YDS60-C24, , DTSU71 or DHSU1079-CT. All offer Class I, rank up 250 A and communication RS485 Modbus-RTU; they only change the dimensions, the weight and the storage temperature.

3. Do I need this meter to do zero pouring into a ship?

Yes. To limit or cancel network injection in a three-phase installation, the inverter you need to know the energy exported in real time in the three phases. This meter gives you that data by RS485. It is a key element in both industrial self-consumption and in solar kits three-phase residential.

4. What does the box include?

Includes the smart meter three-phase, , 3 current transformers of 100 A / 40 mA and 10 m cable RS485.

5. Does it work at extreme temperatures?

It works between -25 and +60 ° C with moisture 5 to 95% without condensation. When installed within the electrical panel, it is protected from the weather.

6. What consumption does the meter have?

Your own consumption is less than 1.5 W, so its impact on the annual energy balance is minimal.