NB three-phase four wire direct current meter

Introduction:

The NB three-phase four wire straight through electricity meter is a new product developed by our factory and introduced to the market. It uses dedicated integrated circuits for energy metering, dedicated CPU circuits for data processing, display, and control of relay actions. Its main characteristics are reliable performance, high accuracy, high overload, low power consumption, small size, light weight, and easy use.

Technical parameters of NB three-phase four wire direct current meter:

(1.1) Measurement range: AC 0~500V * 5A;

(1.2) Accuracy level active power: Level 1; Reactive power: Level 2

(1.3) Input impedance: Voltage input impedance>500K Ω; Current input impedance ＜ 2m Ω;

(1.4) Overload capacity: Voltage (1.2 times rated value continuously, 10 times rated value continuously for 10 seconds);

Current (continuous at 1.2 times rated value, continuous at 10 times rated value for 10 seconds);

(1.5) Temperature coefficient: ≤ 100ppm/℃ (0-50 ℃);

(1.6) Operating frequency: 45~65Hz;

(1.7) Isolation withstand voltage: AC 2.0KV/1min (between power supply/input/output);

(1.8) Insulation resistance: Input, output, power supply to the chassis>50M Ω;

(1.9) Working environment: -10~55 ℃, 20~90% RH (no condensation);

(1.10) Working power supply: AC 220V or AC/DC 85-270V (optional);

(1.11) Communication interface: NB-IOT communication method, optional 1-channel RS485 interface or far-infrared communication interface;

(1.12) Power consumption of the whole machine: ≤ 5VA.

NB three-phase four wire direct electricity meter price reference: (note) The following prices are all reference prices@

1. Three phase four wire smart meter: 700 to 1200 yuan per unit;

2. Three phase four wire multifunctional electricity meter: 1200 yuan to 1500 yuan per unit;

3. Three phase four wire electronic active combination energy meter: 688 yuan to 1080 yuan per unit.

Advantages of NB three-phase four wire direct meter function:

1、 Pre sales of electricity can be made, and the power will automatically shut down when the electricity is used up. The power-off threshold can be set;

2、 Multiple dynamic encryption with one table and one card ensures the security and reliability of user data;

3、 Having information transmission function, the metering data and working status data in the electric energy meter can be returned to the power sales system through the user card for settlement, statistics, and management purposes;

4、 Equipped with error operation and fault prompt functions;

5、 Using LED display, it can display the current cumulative active power consumption, remaining power, and the most recent purchased power, etc. The power display shows five integers and one decimal place.

Yima Xinnuo water meter manufacturer has passed the ISO9001:2000 quality management system certification by China Quality Certification Center CQC, and its products have obtained the "Certificate of Conformity to International Standards" and "Export Product Quality License". The company is located close to the center of the Guangdong Hong Kong Macao Greater Bay Area, with the 107 National Highway running through it, making transportation very convenient. The company adheres to the principle of being a listed enterprise, with sound management and high-quality services, to provide customers with satisfactory smart water meters and smart meters.