Three Phase LoRaWAN Energy Meter
Bidirectional Metering
Prepaid & Postpaid Model
Built-in holding Relay
Overcurrent Cut-off
Alarm function
Event Log
1.Products Description
EM514012 is a three-phase four-wire electronic multi-functional meter. The electricity meter offers options for post-payment and pre-payment modes, supports local communication via RS485 and remote communication via LoRaWAN, and uses the Modbus protocol. It is equipped with a built-in holding relay. Local relay status can be set through RS485 communication, and remote control of the relay on/off can be achieved via LoRaWAN communication, while also enabling remote meter reading. It is widely applicable to both household and commercial power distribution systems.
2.Features
(1) Measurement of bi-directional (forward&reverse) energy, active power, voltage, current, frequency, power factor, and demand quantity etc.
(2) Three Phase LoRaWAN Energy Meter:LoRa Communication LoRaWAN Protocol；Regional Frequency Band: EU868.
(3) Bidirectional Metering:Measurable forward and reverse active and reactive power and energy quantities
(4) Prepaid & Postpaid Model:Supports pre-payment of electric quantity and pre-payment of the electric amount.
(5) Built-in holding Relay: Remote control of electricity meter's on/off state
(6) Overcurrent Cut-off:Set the overcurrent threshold and the overcurrent cut-off recovery time. If the actual current exceeds the threshold, the relay will automatically cut off. After the set recovery time has elapsed, the relay will automatically attempt to close again.
(7) Alarm function:Overcurrent, overvoltage, frequency deviation, low balance/charge level, side cover/top cover detection.
(8) Event Log:Support event recording for recharge, overcurrent, overvoltage, frequency deviation, power outage, low balance/energy level, side cover/top cover detection, etc.It can record and store 20 pieces of data.
3.Technical Parameters
| Product Name | Three Phase LoRaWAN Energy Meter |
| Ref. voltage | 3×230/400V (±20%) |
| Ref. current | 0.25-5(100)A |
| Impulse constant | 1000imp/kWh |
| LCD display | LCD6+2 |
| Operation temp. | -40~+70℃ |
| Relative humidity | <95% |
| Ref. frequency | 50Hz |
| Accuracy class | Class.B |
| Starting current | 0.4%/Ib(CI.1) |
| Load control | Built-in A magnetic latching relay |
| Power consumption | ≤ 1W,<10VA |
| Reference standard | EN 50470-3:2022; EN IEC 62052-11-2021 A11-2022 |
| Communication | LoRaWAN, RS485 |
| Frequency Band | EU863-870 MHz |
| LoRa Antenna | SMA Socket (Based/Stick Type) |
4.Dimensions and wiring diagram
5. What are the typical application of 3 phase lorawan energy meter?
Smart Buildings and Campuses: Monitoring energy consumption for overall building management, tenant billing, and optimization of HVAC, lighting, and other systems.
Industrial Facilities: Tracking energy usage of machinery and processes to identify inefficiencies, optimize production, and manage energy costs.
Renewable Energy Systems: Monitoring the energy generated by solar panels or wind turbines in three-phase installations.
Low Power Consumption: LoRaWAN technology is designed for low power consumption, allowing the energy meter to operate for extended periods on batteries, reducing maintenance and the need for a constant power supply.
Electric Vehicle Charging Stations: Measuring the energy dispensed by three-phase EV chargers for billing purposes.
Smart Grids: Providing data to utility companies for grid management, load balancing, and demand response programs.
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