NB IoT electric meter

Introduction:

NB IoT electric meters use large-scale integrated circuits and high-precision energy metering dedicated chips. The communication capability and reliability of their carrier module have also reached a wide range of practical applications, and digital sampling processing technology and SMT process are applied to design and manufacture instruments with modern advanced level according to the actual electricity consumption of industrial users. This meter adopts advanced measuring chips, accurate measurement, digital calibration technology, modular design, and features low power consumption, high accuracy, stable performance, easy installation, and easy maintenance.

NB IoT electric meter technical parameters:

(1) Measurement function: It has the function of measuring positive, negative, and combined active energy. The combined active energy can be configured according to the demand based on the positive and negative active energy;

(2) Time sharing metering function: supports four rates: peak, off peak, off peak, and off peak; Built in two sets of time zone tables and two sets of daily time period tables, which can be programmed and configured as needed. The switching time between the two sets of time zone tables and the switching time between the two sets of daily time period tables can be set to achieve mutual switching; 14 time periods can be set within 24 hours, and can be set across zero points; Support the setting of public holidays, with 254 holidays available;

(3) Measurement function: capable of measuring power grid parameters such as voltage, current, power, and power factor, with measurement error (reference error) not exceeding ± 1%, and can meet standards within level 1;

(4) Data storage function: supports multiple freezing methods, including daily freezing, hourly freezing, timed freezing, instantaneous freezing, and agreed freezing;

(5) Event recording function: It records the last 10 power outages, programming, timing, opening the meter cover, tripping, closing, event clearing, meter clearing, and malicious loads (optional, this function is turned off by default);

(6) User interaction interface: adopting a large screen LCD display, providing rich graphic or textual prompt information; The display content can be queried through the button loop, and the display items can be configured as needed through the communication port; Provide LCD backlight for easy viewing. Support power outage wake-up function, which can wake up the energy meter through buttons or non-contact methods, and achieve screen display reading of electricity and infrared communication port reading of electricity and other data;

(7) Communication function: Equipped with 1 far-infrared communication interface, 1 RS-485 communication interface, and 1 NB IoT communication interface, the three communication ports are independent of each other. The communication protocol complies with DL/T645-2007 and its filing documents;

(8) Cost control function: The built-in relay is optional and supports plaintext remote opening and closing control function, allowing users to remotely control power on and off; Support tripping, closing, event clearing, and timing;

(9) Malignant load: When the electric energy meter experiences overload, malignant load, or opening of the meter cover event, the electric energy meter can actively notify the NB IoT module that a corresponding event has occurred, and can automatically trigger the "important event immediate reporting" of the NB IoT module;

(10) Remote upgrade: functions such as remote upgrade of energy meters and modules.

NB IoT meter advantages:

1. Massive access to NB IoT with wide coverage and access capability.

2. Quickly deploying a unified underlying data protocol eliminates a lot of parsing and docking work. The instrument does not require RS485 wiring, and one device can be connected to the internet. Through the gateway, traditional instruments can also quickly access the NB IoT network.

3. Low cost installation of instrument direct transmission platform, eliminating network layer equipment such as gateways and collectors. NB-IOT wireless connection, simple network configuration, eliminates 485 wiring and time costs.

NB IoT meter price reference:

1. Single phase NB electricity meter: 350 to 550 yuan per unit.

2. Three phase four wire NB electricity meter: 750 yuan to 1200 yuan per unit.

3. Rail mounted NB electricity meter: 220 to 420 yuan per unit.

NB IoT meters are becoming potential rule changers, revitalizing the entire power industry. Smart meters not only play a crucial role in improving customer service, but also lay the foundation for new and innovative business models. In the coming years, smart meters will continue to be a viable tool for changing the way the power and utility industries operate.