ADW300 IoT Wireless Smart Energy Meter
General
Acrel’s LoRa devices and the LoRaWAN open protocol, new smart electricity metering solutions are proving to be a compelling alternative to other connectivity options for both Internet of Things (IoT) networks and smart grid applications. Lora/LoRaWAN energy meters allow the acquisition of energy meter readings and transmit data over several kilometres for aggregation.
Technical parameter
| Parameter | Description&Value | |
| Voltage Input | Rated Voltage |
3x380~456Vac L-L or 3x660~792Vac L-L (via direct connection) 3x100~120Vac L-L (via PTs) |
| Reference Frequency | 45~65Hz | |
| Power Consumption | ＜0.5VA (each Phase) | |
| Current Input | Rated Current | 3x1(6)A AC (via CTs) |
| Starting Current | 1% Ib (Class 0.5); 4% Ib(Class 1) | |
| Power Consumption | ＜1VA (each Phase) | |
| Phase Wiring | 3P4W | 3-phase 4-wire |
| 3P3W | 3-phase 3-wire | |
| Auxiliar Power Supply | Voltage Range |
85~265Vac |
| Power Consumption | ＜2W | |
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Measurement Performance |
Standard | IEC 62053-22:2003; IEC 62053-21:2003 |
| kWh Accuracy | Class 0.5S | |
| Pulse |
Width of Pulse |
80±20ms |
| Pulse Constant |
6400imp/kWh; 400imp/kWh |
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Features
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Multiple Communication Methods ● 4G LTE ● NB-IoT ● WiFi (2.4GHz&5GHz) ● LoRa ● LoRaWAN ● RS485 (MODBUS-RTU) ● Free Trial of IoT Energy Management System |
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Diverse Electricity Parameters Measurement ● kWh (positive and negative) ● kVarh (positive and negative) ● U, I, P, Q, S, PF, Hz ● Harmonic (THDv, 2-31st) ● 3-phase current&voltage imbalance |
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DO/DI Switch Function ● 2 DO Digital Output ● 4 DI Digital Input |
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Residual Current Measurement Function ● 1-channel Residual Current ● Paired with Residual Current CTs |
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Temperature Monitoring Function ● Thermistor: NTC ● Monitoring: 4-channel Cable Temperature (for A,B,C,N) ● Range: -40℃~+99℃ ● Accuracy: ±2℃ |
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Display
Wiring
3-phase 4-wire connection 3-phase 3-wire connection
Dimension
Network
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