1、 Overview-Four quadrant energy metering CE certified instrument

CE certification is an abbreviation for the "European Conformity" mark, meaning "Conformit é Europ é ene". It is a mandatory certification standard established by the European Union for products, regarded as the "passport" or "passport" for products entering the European market. Any product bearing the "CE" mark means that it complies with the safety, health, and environmental requirements set forth in the EU directives, and can be freely sold within each member state of the EU without having to meet the individual requirements of each member state.

CE certification is a necessary condition for electricity meters to enter the European market. Electricity meters without CE certification will not be able to be sold in the EU market. Strict testing and evaluation have been conducted on the electrical safety, electromagnetic compatibility, and other aspects of the electricity meter to ensure that the product does not pose any safety hazards to users during use. Obtaining CE certification for electric meters means that their quality and safety performance have been recognized by the European Union, which will help enhance the competitiveness of the product in the European market.

IIFour quadrant energy metering CE certified instrument

A four quadrant energy meter is a type of energy meter that can measure and record the direction of active and reactive power flow in a power system. It achieves comprehensive monitoring of the flow of electrical energy by defining the horizontal axis of a plane coordinate system as active power and the vertical axis as reactive power, dividing the plane into four regions (quadrants).

oneQuadrant: Refers to the active and reactive power delivered by the power grid to users, indicating that users are in a state of electricity consumption. This isoftenBased on the electricity consumption situation, electricity flows from the grid to users, and users may also need to obtain reactive power from the grid to support the operation of their power equipment.

Second quadrant: indicates that the user sends active power back to the grid, but still obtains reactive power from the grid. This situation usually occurs when users have installed renewable energy generation facilities such as photovoltaic power plants, and the amount of electricity generated exceeds the amount of electricity consumed. At this point, users are not only self-sufficient, but also able to supply excess electricity to the grid. However, as the operation of power equipment still requires reactive power, users still need to obtain this portion of electrical energy from the grid.

The third quadrant: indicates that the user sends both active and reactive power back to the grid. This situation usually occurs when users have installed large renewable energy generation facilities, and the amount of electricity generated is much greater than the amount of electricity consumed, while the demand for reactive power from users' electrical equipment is also low. At this point, users not only transmit excess electrical energy to the grid, but also transmit excess reactive power to the grid.

The fourth quadrant: indicates that the user obtains active power from the grid but sends reactive power back to the grid. This situation may be due to the excessive reactive power generated by the user's power equipment during operation (such as overcompensation caused by excessive capacitor input), and this reactive power is transmitted back to the grid.

3、 Characteristic functions of electric meters

Comprehensive measurement: able to accurately measure key power parameters such as three-phase voltage, current, power, power factor, as well as harmonic distortion rate, reflecting the quality of the power grid.

Multi rate metering: supports setting 4 rates and 8 time zones, helping users to charge according to different time periods and optimize electricity costs.

Multiple interfaces: Provides RS-485 communication interface, analog output, and switch input/output, making it easy to integrate with upper computer, DCS and other systems.

Intuitive display: High brightness LCD display screen, real-time display of power parameters and energy data, including current quadrant, load rate and other information.

Intelligent programmable: Users can set parameters through panel buttons, support event recording, demand and extreme value statistics, and improve energy management efficiency.

4、 Installation and wiring of electric meters

4.1 External dimensions of electric meter

4.2 Wiring diagram of electric meter