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Eastron SEM3 is a new generation din rail mounted energy meter, equipped with RS485 connectivity. With multi-parameters measurement, SEM3 can be used for energy monitoring of various applications, such as PV energy management, smart building, industrial equipment, etc. The meter can be used as 1x 3phase energy meter or 3 individual single phase energy meter. In single phase mode, 3 external CT can be set with different CT ratio for three independent loads.
Eastron SEM3 measures and displays the characteristics of 1p2w, 3p4w, 3p3w supplies, including voltage, frequency, current, power and active and reactive energy, imported or exported, power factor, Max. demand etc. Energy is measured in terms of kWh, kVArh and kVAh. It provides 4 quadrant measurement.
Eastron SEM3 is designed in compact size with 1 modular width. To save installation and maintenance cost, all terminals of SEM3 adopt spring terminals or RJ terminals for easy connection. Warning is also available in case the phase sequence error happens.
Eastron SEM3 provides two measurement modes: Total mode and PV mode. In total mode, import and export energy will be measured separately. In PV mode, import and export energy will be balanced first, and the balanced value will be counted in import or export energy.
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Electrical Characteristics |
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Type of Measurement |
RMS including harmonics on three phase AC system (3P, 3P+N) |
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Measurement Accuracy |
Power |
l±1% EC 61557-12 Class 1 |
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Active Energy |
±1% |
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Reactive Energy |
±2% |
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Frequency |
±0.2% |
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Current |
±0.5% (4A~120A) ±1% (1A~4A) ±3% (0.06A~1A) |
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Voltage |
±0.5% |
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Power Factor |
±0.1 |
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Data Update Rate |
Active power: 50mS (RS485) |
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Input-Voltage |
Un |
3x230V(L-N)/400V(L-L) |
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Working Voltage Range |
90 to 300 Vac L-N 156 to 520 Vac L-L |
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Frequency Range |
50/60 Hz |
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RS485 Communications |
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Protocol |
MODBUS RTU |
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Communication Address |
1~247 |
| Transmission Mode |
Half duplex |
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Data Type |
Floating point |
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Transmission Distance |
1000m Maximum |
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Transmission Speed |
2400bps~115200bps |
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Parity |
None (default), Odd, Even |
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Stop Bits |
1 or 2 |
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Response Time |
＜50mS |
Eastron Electronic Co., Ltd. headquartered in Jiaxing, China, near to Shanghai, Hangzhou, Jiangsu, is one of the leading high-tech manufacturer and supplier for electricity products and energy measurement solutions. Over the years, we have developed a rich range of electricity meters, sensors, communication modules and management systems.Custom Manufacturers of Mini Size Three Phase RS485 Electronic kWh Meter with 3 in 1 Current Transformer.
Eastron keeps investing on the research and development of new technology and new products on electricity metering. We have energetic and innovative development teams in both China and UK,which help us keep the competitive edge in the market. The collaboration with leading universities and institutions also brings many cutting-edge technology into our products. To make sure the reliability of the products, Eastron has setup own professional lab that can performs EMC, LVD, accuracy and environment tests according to IEC, EN, GB, UL standards.
With more than 40 patented technologies on software, embedded software and hardware, Eastron has been awarded with “High-tech Enterprise” and “High-tech R&D Centre of Electricity Application”. Eastron strictly follows ISO 9001 Quality management system, and the production is approved by SGS according to MID standard.Suppliers and Factory of Mini Size Three Phase RS485 Electronic kWh Meter with 3 in 1 Current Transformer
Creating value to and growing up with our partners is our mission. Eastron provides not only the high quality and innovative products, but also first-class service to all our customers. We have professional team for technical supports and aftersales services. We have provided products and services to more than 50 countries in Europe, Asia-Pacific, America, Middle East, and Africa. We pride ourselves on having long-term partners globally that allows us to further our growth and bring our innovation and quality to the market.
We develop and produce high performance electricity meters, power analyzers, current sensors, communication modules and management systems. Mini Size Three Phase RS485 Electronic kWh Meter with 3 in 1 Current Transformer Manufacturers and Factory
Address: NO 52, Dongjin Road, Nanhu, Jiaxing, Zhejiang, China
Copyright @ Eastron Electronic Co., Ltd. All rights reserved Suppliers of Mini Size Three Phase RS485 Electronic kWh Meter with 3 in 1 Current Transformer
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