NB smart meter

Introduction:

NB smart meters are based on FDD LTE technology and have superior technical characteristics such as low power consumption, deep coverage, and large connectivity. Combined with independently deployed or upgraded core networks, they are the most suitable for LPWAN business needs in the market and will inevitably become the best choice for network communication technology in smart meter solutions!

The NB smart meter metering part adopts a dedicated electricity metering chip, which can accurately and reliably measure various electrical parameters such as voltage, current, power, grid frequency, power factor, etc. It can achieve the calculation function of current power and remaining power. Without the need for servers and gateways, measurement results can be transmitted to the management platform through the NB-IOT network without the user's perception.

NB Smart Meter Technical Parameters:

1. Rated frequency: (Hz) 50Hz

2. Working voltage: Range 180-260V

3. Basic current/maximum current (Ib/Imax): Rail mounted meter: 5 (60) A

4. Display mode: LCD display, current total battery level, current voltage, current, current power, remaining battery level signal indicator code, instruction code, status code, year month day, hour minute second,

5. Anti static design service life: rail gauge: contact discharge 8KV, air discharge 12KV, greater than 10 years

6. Normal operating temperature: -25 ℃ to+55 ℃

7. Storage temperature: -40 ℃~+70 ℃

8. Meter size: length, width, and height: 90mm * 35mm * 69mm

9. Protection requirements: heat-resistant and flame-retardant in accordance with IEC 60695-2-11 regulations, anti electric shock

10. Following the standard: GB/T 17215.321-2008 "Static AC Active Energy Meters of Class 1 and Class 2"

11. Communication method: NB IoT IoT communication method

NB smart meter function:

(1) It has the function of measuring positive and negative active energy, can store its data, and can set the combination of active energy based on it;

(2) It has a time-sharing metering function, which accumulates active electrical energy according to corresponding time periods and stores total, peak, off peak, and valley electrical energy. Default 5 time periods;

(3) Store the total electricity and electricity at various rates for the past 12 months; The data storage boundary time is 24:00 at the end of the month, or the hourly time between the 1st and 28th of each month;

(4) Permanently record the time of occurrence of the reset event on the energy meter and the energy data at the time of reset;

(5) Record the total number of programming attempts, the time of the last 10 programming attempts, operator code, and data identification of programming items;

(6) Record the total number of calibration times (excluding broadcast calibration), the time of the last 10 calibration times, and the operator code;

(7) Record the total number of power outages, the last 10 instances of power outages, and the time they occurred and ended;

(8) Record the last 10 remote control tripping events and the last 10 remote control tripping events, including the time of tripping and tripping events and data on electrical energy;

(9) Record the total number of times the watch cover has been opened, as well as the occurrence and end times of the last 10 watch cover opening events.

The price reference for NB smart meters is as follows:

1. Single phase NB electricity meter costs 800 yuan per unit

2. Three phase NB electricity meter costs 1500 yuan per unit

3. Rail mounted NB electricity meter costs 600 yuan per unit

Shenzhen Yima Xinnuo, as an innovative enterprise in the energy Internet of Things, has launched a new NB smart meter; Provide NB IoT solutions for household billing in residential, commercial, and municipal areas. One meter per household, directly connected platform, eliminates manual meter reading and traditional 2G complex wiring, bringing convenient IoT experience to customers' daily lives.