Abstract

DDS1550-LoRaWAN single phase wall mounted LoRaWAN energy meter is new generation of secure energy meter. It is meet the industrial control standards, energy saving, strong anti-interference ability, long transmission distance, high speed, and stable operation, could meet the requirement of secure communication.

LoRaWAN wireless technology make the communication distance longer, signal more stable, as the meter sends data to corresponding gateway through LoRaWAN wireless network. In addition, the LoRaWAN energy meter support bi-directional measurement, which makes it perfect for using with solar system. LoRaWAN wall mounted meter is widely used in city, rural areas, and factories, etc.

Feature

● Intelligent design. The meter deployed with imported single chip which controlled by microcomputer, full digital metering, to reach the level of high accuracy, good linearity, wide range, low consumption and prevent from electricity stolen.

● Good material design. High quality ABS material, fully seated dustproof and waterproof design, flame retardant, anti-corrosion properties.

● Easy to install. Build in or external switch can be optional.

● Backlight LCD display. The parameters can be fully displayed on the LCD after being powered on for one second, and backlight lights up. The meter can make screen full displayed for 10 seconds through communication command.

● Strong data storage, processing, and control capabilities. The parameters configured when the module is powered off can be saved and automatically restored when the power is restored.

● Long lifespan, low power consumption, wide measurement range.

● Communication isolation. The isolation device adopts high reliability dual-channel digital isolation chip, which has high electromagnetic immunity and low radiation characteristics, ensuring complete isolation of communication, strong anti-interference ability and long communication distance.

Main Technical Parameters

1. Electrical Parameters:

Working voltage: AC 220V+-120% 50Hz;

485 idle voltage: DC 5V;

485 load capacity: Up to 32 RS485 terminal devices (800 meters);

Power consumption: Active power ≤ 3W, Apparent power ≤ 5VA.

2. Wireless Performance Parameters:

Center frequency: 433MHz/470/868/923MHz; LoRaWAN international standard;

Modulation technology: Linear frequency modulation, spread spectrum modulation;

Bandwidth: 125kHz/250kHz;

RF power: 20dBm (100mW);

Receive sensitivity: -143dBm @SF12/BW 125KHz.

3. Safety Performance:

Impact voltage: 2kV;

Working pressure: 2kV.

4. Electromagnetic Compatibility:

Electrostatic discharge: 4kV;

Electrical fast transient: 2kV (power supply loop), /2kV (signal loop);

Surge voltage: 2kV (differential-mode)

5. Application Environment:

Temperature: -25 ° C ~ +60 ° C;

Humidity: relative humidity ≤ 95%.

6. Data Storage: Data storage period ≥ 10 years since power off.

7. Communication Interface: standard RS485;

Set the port 2400bps locally;

Downlink terminal communication port: Baud rate can be set (for example: 1200bps, 2400bps, 4800bps, 9600bps, 19200bps).

Cautions

1. About AC/DC Energy Meter

Generally speaking, the alternating current or direct current shall be the first factor. We also have DC meter when you need to measure the Direct Current.

2. About Function

(1) As the content is limited, all functions mentioned above are the main functions.

(2) Other functions such as TOU, load control, friendly hours, RTC, please refer to the technical specification or contact with our sales team.

3. About Application

(1) The applications only for examples, for the practical situation the energy meter can also be used for other applications.

(2) Welcome to inquiry if you are not sure about the functions or application, we have free technical support.

http://www.wirelessmartsystems.com/