Scenario Preset
(1)There are 10 Areas with 3-phase Power System needed to be monitored (2)Each area has 20 circuits 3-phase needed to be monitored, circuits’ rated voltage is 400Vac L-L and 230Vac L-N, circuit’s rated current is 100A AC. (3)For the place that we gonna install energy meter and 4G gateway, it was covered by stable 4G signal. (4)All 3-phase energy meter will be of partial centralized installation in each area, which make it possbile for 1 AWT100-4GHW 4G IoT gateway to support 20 (max 25, recommend 20) ADL400/C 3-phase Energy Meters using RS485 wired communication in a close range within 300m.Devices Deployment Plan
Communication Structure&Logic
(1)4G Communication could be served as one of the final data upstream methods by sending the data to cloud server deployed in Internet so that Acrel IoT System could be interact with these data collected by bottom metering devices like Energy Meter (2)AWT100-4GHW gateway support upstream of 4G communication with MQTT and MODBUS- protocol and downstream of RS485 communication based on MODBUS-RTU protocol. ADL400/C support upstream communication of RS485 communication based on MODBUS-RTU protocol. (3)Based on the communication described in item (2), Acrel AWT100-4GHW gateway could receive the data from ADL400/C energy meter using RS485 communication while sending the data further to cloud server using 4G upstream communication. Thus accomplish a complete communication from bottom metering devices to top system software.
Hardware Devices Overview [Energy Meter & Paired IoT Gateway] 
Hardware Devices Overview [Energy Meter & Paired CTs]
Overall Model Selection&Quoation(1)This Quotation doesn’t include freight charge. To gain a complete quotation, please refer the actual quantity that you want to request for the actual order, once we receiving it. We will issue a Official Proforma Invoice with Acrel Stamps on it for later procedure. 
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