Complaint
IoT-based MQTT WIFI 4G Energy Power Meter for EV Charger Station
ADW300 wireless meter is mainly used to measure three-phase active power in the low-voltage network. It has the functions of RS485 communication and 470MHZ wireless communication. It is convenient for users to monitor, collect and manage electricity. It can be flexibly installed in the distribution box to realize the measurement, statistics, and analysis of individual electric energy in different regions and loads.
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| Input voltage | Nominal voltage | 3*220/380V,3*380V,3*57.7/100V3*100V |
| Frequency | 50Hz-60Hz | |
| Consumption | <0.5VA(B phase,C phase) | |
| Input current | Maximum current | 6A |
| Starting current | 0.002A | |
| Consumption | <2VA | |
| Accuracy | Class 0.5S | |
| Temperature accuracy | ±2ºC | |
| Pulse | Width | 80±20ms |
| Constant | 6400imp/kWh | |
| Temperature | Operating | -25ºC~55ºC |
| Storing | -40ºC~70ºC | |
| Humidity | ≤95%(No condensation) | |
| Altitude | <2000m | |
Multiple Communication Methods
4G LTE
NB-IoT
WiFi (2.4GHz&5GHz)
LoRa
LoRaWAN
RS485 (MODBUS-RTU)
Free Trial of IoT Energy Management System
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
DO/DI Switch Function
2 DO Digital Output
4 DI Digital Input
Residual Current Measurement Function
1-channel Residual Current
Paired with Residual Current CTs
Temperature Monitoring Function
Thermistor: NTC
Monitoring: 4-channel Cable Temperature (for A,B,C,N)
Range: -40ºC~+99ºC
Accuracy: ±2ºC
Local Configuration
Keypads HMI for Setting (CT/PT ratio, Wiring and etc)
Setting through Adjustment Software
| Function | Description |
| LCD display | 8 digits |
| Measurement of energy | kWh (positive and negative) |
| kvarh (positive and negative) | |
| A, B, C phase positive kWh | |
| Electrical parameters | U,I,PQ,S,PF,Hz |
| Harmonic | 2-31st voltage and current harmonic |
| Key programming | 4 keys to communication and set parameters |
| Temperature measurement | A, B, C, N four-way temperature measurement(optional T) |
| Dl/DO | 4DI/2DO(Selection of K) |
| Residual current | 1-channel |
| Communication | Infrared |
| RS485(Modbus-RTU)(Optional: C) | |
| 47OMHz Wireless Transmission (Optional: LR) | |
| GPRS Communication(Optional: 2G) | |
| NB-loT Communication(Optional: NB) |
| 3-phase 4-wire CT operated | 3-phase 3-wire CT operated |
