Mqtt WiFi 4G Lora RS485 Energy Power Meter with Split Core CT

Product Description

IoT-based Wireless Power Meter

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.

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

Function

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)

Dimension
Wiring
Networking
4G WIFI SOLUTION
LORA SOLUTION

Steps
FAQ
Q:What's the biggest advantage of ADW300?
A:ADW300 has its built-in wireless communication module which allow it to realize 4G LTE, WiFi, NB-IoT, LoRa upstream communication without using extra IoT gateways. For the application scenarios when the meters can't be of centralized installation, ADW300 will usually be the best option for monitor 3-phase circuits that were far from each other.
Q: How should I deal with RS485 network communication malfunction?
A: First, check if the wiring of RS485 communication line was loosened or wired incorrectly.(like reversely wiring the A,B terminal).
Next, inspect if the meter's setting of address, baud rate, check bit were correct by using keypads on the meter.
Q: What if LoRa communication of meters malfunctioned?
A: First, use USB to RS485 serial converter to connect the meter with computer. Then use adjustment software to check if setting of meter is on consensus with the setting of master station. (setting of channel and spreading factor--SF)
If the setting remains the same, then it might be due to large interference of work site or the excessively far range between meter and host. In that case, it's recommended to use chuck antenna or set a new master station nearby.
Q: What's the difference between ADW300 and ADW300W
A: ADW300 has internal current transformers and can select compatible current transformers according to the site current to realize a secondary connection via CTs.
ADW300W on the other hand has external current transformers.(non-detachable or it will damage the meter) This kind of design extremely eases the wiring and installation if the work-site already has CTs.
Q: What do 3×57.7/100V,3×220/380V,3×380/660V,3×100V,3×380V,3×660V represent respectively?
A: The meter's spec of 3*100V,3*57.7/100V is suitable for high voltage power system while pairing with PT(potential transformer or voltage transformer). Beside, 3*100V represent 3-phase 3-wire and 3*57.7/100V represent 3-phase 4-wire.
The meter's spec of 3*220/380V,3*380/660V,3*380V,3*660V is suitable for low voltage power system(directly connect with the meter). Meanwhile,3*380V,3*660V represent 3-phase 3-wire and 3*220/380V,3*380/660V represent 3-phase 4-wire.
Other Question? Please contact us and we will get back to you as soon as possible.
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Company Profile
Acrel Co., Ltd.[stock code: 300286.SZ] is a high-tech enterprise that integrates R&D, production, sales, and service, since its establishment, is committed to providing users with energy efficiency management and powerful security system solutions. Acrel Electric has a complete production line from cloud platform software to sensors.
Acrel energy efficiency management system including substation operations and maintenance cloud platform, electricity safety management cloud platform, Environmental equipment power consumption monitoring cloud platform, prepaid management (system) cloud platform, intelligent power distribution monitoring system, power quality management system, building energy consumption management system, industrial energy control platform, leakage power monitor and control system, fire-fighting device power monitoring system, fire-proof door monitoring system, emergency lighting and evacuation indicating system, EV charger management system, data center power&environment monitoring system, smart lighting control system, IT isolation power supply system and related products. The company attaches great importance to product quality and innovation. By the end of 2018, the company has 5 trademarks, 18 invention patents, 72 utility model patents, 94 appearance patents, and 147 computer software Copyrights, and has participated in the formulation of national or industrial standards.