SEM5-5

CT Operated Wireless Three Phase Energy Meter for PV Metering

1P2W/3P3W/3P4W
Compact design
Wifi wireless communication
RS485 Modbus RTU & Ethernet Modbus TCP
Easy connection solution
PV modes available
Accuracy Class 1.0 active energy
Support 1x3-ph or 3x1-ph load measurements
Lora optional

+86-400-996-9296

Eastron SEM5-5 is a next-generation DIN-rail AC power meter featuring TCP communication, Wi-Fi connectivity, and RS485 wired communication. It offers comprehensive multi-parameter measurement, capable of measuring and displaying characteristics of 1P2W, 3P4W, and 3P3W power systems, including voltage, frequency, current, power, active and reactive energy, import/export direction, power factor, and more. It is suitable for energy monitoring in various applications such as photovoltaic energy management, smart buildings, and industrial equipment.

The Eastron SEM5-5 features a compact and sophisticated design with a width of 2P (approx. 36mm). To save installation time and reduce maintenance costs, some terminals of the SEM5-5 are equipped with spring terminals or RJ terminals for easy connection, enabling quick plug-in installation and providing greater convenience and safety in use.

Electrical Characteristics
Type of Measurement	RMS Including Harmonics on Three Phase AC System (3P, 3P+N)
Measurement Accuracy	Power	±1% IEC 61557-12 Class 1
	Active Energy	±1% IEC 61557-12 Class 1 ±1% IEC 62053-21 Class 1
	Reactive Energy	±2% IEC 61557-12 Class 2
	Frequency	±0.1%
	Current	±0.5%
	Voltage	±0.5%
	Power Factor	±0.01
Data Update Rate		100mS
Input-Voltage	Un	3*230V(L-N)/400V(L-L)
	Working Voltage Range	100 to 277 V ac L-N 173 to 480 V ac L-L
	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	＜100mS

Wi-Fi Communications
Protocol	MODBUS TCP
Data Type	Floating Point
RF Band	2.4 GHz to 2.5 GHz
Max. RF Power	<20 dBm
Wi-Fi Protocol	802.11 b/g/n
Wi-Fi Range	Up to 30m / 100ft indoors and 50m / 160ft outdoors (Depends on local conditions)

Ethernet Communications
Protocol	Modbus-TCP
Modbus Address Range	1-247
IP	192.168.1.200 (default)
Port	502
Mask	255.255.255.0
Gateway	192.168.1.1
DHCP	OFF (default)

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