1、 Introduction to the Guide Rail Electric Energy Meter Industry

With the rapid development of the economy, the demand for electricity in various industries is increasing, and the shortage of electricity resources and uneven electricity consumption at different times are still serious. With the further advancement of smart grid construction, electronic meters will show a trend of completely replacing induction meters and gradually transitioning to "smart meters". At present, various anti-interference and fault-tolerant technologies are adopted in the software of electric energy meters, such as Fourier fast filtering technology in AC sampling, high-precision measurement technology based on A/D conversion and DSP data processing technology, software error calibration technology, and delay selection filtering technology for switch input, in order to improve the anti-interference ability of the whole machine.

IIRail mounted electric meterProduct Overview:

Electric power metering instruments are suitable for low-voltage measurement of AC parameters and active and reactive power. They have the characteristics of high measurement accuracy, stable and reliable performance, long service life, small size, light weight, low power consumption, easy operation, easy expansion of management functions, and multi-purpose use of one meter. It can be widely applied in the field of electricity measurement and automation management in the power industry, such as buildings, shopping malls, exhibition centers, schools, airports, ports, factories, office buildings, and public facilities.

The rail mounted electric energy meter is a new generation of miniature intelligent electric energy meters developed by Tuoqiang Electric based on years of experience in meter design. It is used in 380V/220V terminal lighting systems and adopts a standard DIN35mm rail mounted design with modular structure. The width matches the miniature circuit breaker, making it easy to install inside the lighting box.

The electricity meter adopts LCD display to measure electrical energy and other electrical parameters, and can set parameters such as clock, rate period, etc. It also has the function of outputting electrical energy pulses. RS485 communication interface can be used to exchange data with the upper computer.

The rail mounted electric energy meter has the advantages of small size, high accuracy, good reliability, and easy installation. Its performance indicators meet the technical requirements of national standards GB/T 17215, GB/T 17883, and power industry standard DL/T614 for electric energy meters. It is suitable for sub metering of electric energy in government agencies and large public buildings, and can also be used for electric energy management assessment in enterprises and institutions.

3、 Product execution standards:

Complies with the technical requirements for Class 1 and Class 2 static AC active energy meters in GB/T17215.321-2008 and IEC62053-21 international standards. Adopting LCD display with power pulse output function; RS485 communication interface can be used to exchange data with the upper computer, greatly facilitating the automation management of electricity consumption. Using microelectronics technology to measure electrical energy, the energy meter obtains voltage sampling signals from the voltage divider and current sampling signals from the current divider. This product is suitable for a wide voltage range, high reliability, long lifespan, high accuracy, low power consumption, and has functions such as anti-theft.

★ GB/T 17215.321-2008 AC measuring equipment - Special requirements - Part 21: Static active energy meters (Class 1 and Class 2)

★ GB/T 17215.322-2008 AC measuring equipment - Special requirements - Part 22: Static active energy meters (0.2S and 0.5S levels)

★ GB/T 17215.323-2008 AC measuring equipment - Special requirements - Part 23: Static reactive energy meters (Class 2 and Class 3)

★ GB/T 17215.211-2006 AC measuring equipment - General requirements, tests and test conditions - Part 11: Measuring equipment

4、 Specifications and main technical parameters

1. Specification and model

2. Main technical parameters:

a、 Basic error:

b、 Gas parameters (reference conditions):

Starting current: 0.4% Ib

Power consumption: Voltage line<1.0W, 3.0VA;

Current line<1.0VA

Stealth: equipped with logic anti creep circuit

Voltage range: 220V ± 10%

Working temperature range:- 25℃~ +65℃

Power failure data storage time>20 years

5、 Installation and use

1. The electricity meter has been inspected and qualified before leaving the factory, and sealed with a lead seal before installation and use. If there is no lead seal or it has been stored for too long, relevant departments should be asked to re verify and seal it before installation and use.

2. The electric meter should be installed in a dry and ventilated place, and the bottom plate for installing the electric meter should be fixed on a sturdy, fire-resistant, and vibration resistant wall. The height of the electric meter is about 1.8 meters.

3. Install and wire according to Figure 1 and Figure 2, tighten the wiring screws, and secure the connecting plate inside the terminal box.

4. The reading of an electric meter connected through a transformer must be multiplied by the transformation ratio to obtain the actual amount of electrical energy.

5. One table, one card: The IC card held by the user cannot be exchanged. In case of loss, a replacement card should be purchased from the power supply department (sales office).

6. Preparation for purchasing electricity: Before purchasing electricity, the user must insert the IC card into the card slot once to facilitate sending the data in the meter back to the computer database.

7. Electricity purchase method: When selling electricity, insert the IC card into the IC card reader and operate the computer to use it

Encrypt and write the account number, pre purchased power, alarm power, capacity limiting method, and capacity limiting power into the IC card.

8. Electricity card usage: Insert the power purchase card into the card slot. If it is a valid power purchase card, the meter will automatically read the data into the meter. The LCD display screen will show the remaining amount, power purchase amount, total purchase amount, total power consumption, user number, and constant in sequence. Please keep the card properly when unplugged.

9. Operation display: During the operation of the electricity meter, it alternately displays the remaining amount, purchase amount, total purchase amount, total electricity consumption, user number, and constant in the meter.

10. Overcapacity alarm: During the operation of the electricity meter, if the "alarm indicator light" flashes rapidly, it warns the user that the electricity has been exceeded. If the meter is set to the over capacity power-off limit mode, it will be turned off for 3 minutes after 60 seconds of over capacity power consumption; If the user inserts the card and responds, the power supply can be immediately restored.

11. Accumulation limit: If the purchased electricity+remaining electricity>accumulation limit (10000kWh), the purchased electricity will not be read in, and the display will show an "Error=10" prompt, indicating that the stored electricity in the card is still valid.

12. Warning reminder: When the remaining power in the meter is less than the "audible and visual alarm power", the "alarm indicator light" will flash (with an interval of 1 second) to display a reminder to the user to purchase electricity.

13. Power outage warning: When the remaining power in the meter is less than the "trip alarm power", the "alarm indicator light" will remain on, and the LCD will display the "trip" prompt. The relay will trip. At this time, the user can insert the power purchase card into the meter once, and the meter will close. The "alarm indicator light" will continue to stay on. At this time, the user should quickly go to the power supply department to purchase electricity to avoid being unable to purchase electricity in time and unable to use electricity. If the IC card of this meter cannot be found after pulling the switch, you can borrow a neighbor's IC card to insert it and restore power supply.

14. Power purchase reminder: When the remaining power in the meter is less than the "alarm power", the "alarm indicator light" will remain on as a constant reminder.

15. Fault declaration: When the remaining power is displayed as zero or negative, a "trip" prompt will be displayed. If the meter continues to operate, the user should immediately purchase electricity and proactively report the situation to the power supply department.