ApexSun Solar
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The SEM1 Series is a new generation din rail mounted energy meter, equipped with Wi-Fi and RS485 connectivity. With multi parameters measurement, SEM1 energy meter can be used for energy monitoring of various applications, such as PV energy management, smart building, and industrial equipment.
It measures characteristics of 1P2W networks, including voltage, frequency, current, power, active and reactive energy (imported or exported), and power factor. Energy is measured in kWh and kVArh.
Designed in a compact size to save installation and maintenance costs, all terminals adopt spring or RJ terminals for easy connection. The measurement mode is set to "total mode," where import and export energy are measured separately, while total energy reflects the sum of both.
| Electrical Characteristics | ||
|---|---|---|
| Type of Measurement | RMS | |
| Accuracy | Active / Reactive Energy | Class 1 IEC 61557-12 |
| Power | ± 1% | |
| Current | ± 0.5% (4A to 120A) | |
| Voltage | ± 0.5% | |
| Data Update Rate | RS485: 50mS / Wi-Fi: 100mS (Active Power) | |
| Input Voltage | Un / Range | 230V (100~277V AC L-N) |
| Communication Details | |
|---|---|
| Interface 1 | RS485 Port (Modbus RTU) |
| Transmission Speed | 2400 to 115200bps (Default 9600) |
| Interface 2 | Wi-Fi (Modbus TCP) |
| Wi-Fi Range | Up to 30m indoors / 50m outdoors |
| RF Band | 2.4 GHz to 2.5 GHz |
We are a leading high-tech manufacturer of electricity products and energy measurement solutions. Over the years, we have developed a wide range of electricity meters, sensors, communication modules, and management systems.
To ensure product reliability, our professional lab performs EMC, LVD, accuracy, and environment tests according to IEC, EN, GB, and UL standards. Holding over 280 patents, our facility is certified as a "High-tech Enterprise" and operates under ISO 9001, with MID and UL certifications.
We have provided products and services to more than 50 countries across Europe, Asia-Pacific, America, the Middle East, and Africa, fostering long-term global partnerships.
