Three-phase energy meter DHSU1079-CT, RS485

Precise energy monitoring in 3-phase installations

The DHSU1079-CT energy meter is a professional device designed to measure and monitor energy consumption in photovoltaic systems and three-phase electrical installations. Thanks to precise indirect measurement using current transformers (up to 250A/50mA), it provides accurate data necessary for analyzing energy efficiency and optimizing costs. The device is particularly recommended for use with Huawei inverters, but will also work in any other system requiring reliable energy measurement.

Functionality and application

The DHSU1079-CT meter offers a wide range of possibilities, from simple energy consumption monitoring to integration with advanced building management systems (BMS). Equipped with a clear LCD display, it allows direct reading of key parameters such as voltage, current, active and reactive power, as well as energy consumed and fed back into the grid. RS-485 communication with Modbus-RTU protocol allows easy data transmission to monitoring and archiving systems, which facilitates trend analysis and identification of potential savings.

• Indirect measurement: Ensures measurement accuracy even under high loads, thanks to the use of external current transformers. This solution is particularly useful in industrial and commercial installations.
• RS-485 communication: Enables integration with building automation systems and remote data reading.
• LCD display: Quick access to current parameters without the need to connect a computer.
• TH rail mounting: Standard mounting simplifies installation and replacement of the meter in existing electrical panels.
• Accuracy class 1: Guarantees high measurement accuracy, which is crucial for billing and energy analysis.

Construction and technical parameters

The DHSU1079-CT meter has been designed with reliability and durability in mind. The housing made of high-quality materials provides protection against external conditions, and a wide operating temperature range (-25°C to +60°C) allows its use in various environments. The device is designed to operate in 3P4W (three-phase four-wire) networks with a voltage of 230/400 V AC and a current of up to 250 A. Thanks to its compact size, it does not take up much space in the distribution cabinet. TH rail mounting is quick and intuitive, which translates into time savings during installation.