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SDM120CTMB is Modbus CT Type Din Rail Single Phase Multi-function Energy Meter. It measures active energy, reactive energy, current, voltage, power, power factor, frequency, etc. Suitable for monitoring energy consumption in residential, industrial and utility applications.
The meter can be configured to work with a wide range of CTs, giving the unit a wide range of operation.
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Electrical Characteristics |
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Type of Measurement |
RMS on single phase AC system (1P+N) |
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Measurement Accuracy |
Power |
0.5% of range maximum |
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Active Energy |
IEC 62053-21 Class 1.0/ EN50470-1/3 Class B |
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Reactive Energy |
IEC62053-23 Class 2, IEC 61557-12 Class 2 |
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Frequency |
0.1% of mid-frequency |
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Current |
0.2% of range maximum |
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Voltage |
0.2% of range maximum |
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Power Factor |
1% of unity (0.01) |
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Input & Output |
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Input-Current |
CT Type |
CT Primary |
1-9999A |
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CT Secondary |
1A/5A |
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Min Current |
0.25A |
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Starting Current |
10mA |
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Direct Type |
Rated Current |
5A |
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Max Current |
45A |
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Min Current |
0.5A |
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Starting Current |
40mA |
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Output |
SDM120A/D/DB |
Pulse Output for active energy |
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SDM120P/CTP |
2 Pulse Output for imp/exp. energy |
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SDM120M/CTM |
2 Pulse Output + RS485 Modbus |
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SDM120MB/CTMB |
2 Pulse Output + M-bus EN13757 |
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M-Bus Communications |
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Interface Standard and Protocol |
M-bus EN 13757-3 |
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Communication Address |
1-250 |
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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 |
300bps〜9600bps |
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Parity |
None (default), Odd, Even |
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Stop Bits |
1 or 2 |
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Response Time |
<100 mS |
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.
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.
We develop and produce high performance electricity meters, power analyzers, current sensors, communication modules and management systems.
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