SEM1-M-2

RS485 Din Rail Single Phase Energy Meter with CT Connection

Compact design
RS485 Modbus RTU
Easy connection solution
Bi-directional measurement
Multi-parameter measurements
Accuracy Class 1.0 active energy

400-996-9296

Eastron SEM1-M-2 is a new generation din rail mounted energy meter, equipped with RS485 Modbus connectivity. With multi parameters measurement, SEM1-M-2 can be used for energy monitoring of various applications, such as solar PV system, smart building, industrial equipment, etc.

Eastron SEM1-M-2 measures characteristics of 1P2W network, including voltage, frequency, current, power and active and reactive energy, imported or exported, power factor etc. Energy is measured in terms of kWh and kVArh.

Eastron SEM1-M-2 is designed in compact size. To save installation and maintenance cost, all terminals of SEM1-M-2 adopt spring terminals or RJ terminals for easy connection.

The measurement mode of SEM1-M-2 is total mode. In total mode, import and export energy will be measured separately. Total energy equals to import energy plus export energy.

Electrical Characteristics
Type of Measurement	RMS including harmonics
Measurement Accuracy	Power	±1%
	Active Energy	±1% IEC 62053-21 Class 1
	Reactive Energy	±2%
	Frequency	±0.2%
	Current	±0.5% (4A~120A) ±1% (1A~4A) ±3% (0.06A~1A)
	Voltage	±0.5%
	Power Factor	±0.1
Data Update Rate		Active power: 50mS (RS485)
Input-Voltage	Un	230V
	Working Voltage Range	100~277 V ac L-N
	Frequency Range	50/60 Hz

RS485 Communications
Protocol	MODBUS RTU
Communication Address	1~247
Transmission Mode	Half duplex
Data Type	Floating point
Transmission Distance	1000m Maximum
Transmission Speed	2400bps~115200bps
Parity	None (default), Odd, Even
Stop Bits	1 or 2
Response Time	＜50mS

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