HB866-X Campus multi-user energy meter

Product Introduction

This multi-user energy meter is a new product independently developed by our company. It can measure single circuit, double circuit, and triple circuit. The single circuit can measure and control up to 39 households, the double circuit can measure and control up to 18 households, and the triple circuit can measure and control up to 12 households. It uses a high-frequency RF card as the link for data transmission, with advantages such as contactless, anti attack, large capacity, good encryption, stable data transmission, and long service life. This meter can also be connected to the network through RS485, and up to 256 meters can share one card reader. Users do not need to swipe their card at the meter after purchasing electricity, and can automatically copy the electricity consumption information of each household through the computer at any time, making it easy for the management department to timely calculate the monthly electricity consumption.

The electric energy meter is centrally installed and produced using microelectronics technology and surface welding process. The microcontroller processing system realizes data detection, household measurement, and cyclic display. The non-contact M1 RF card controls power on and off to achieve prepaid purposes, facilitating property management, eliminating theft and leakage behavior, and completely solving the problem of difficulty in collecting electricity bills. This electric energy meter has the advantages of small size, anti electromagnetic interference, low power consumption, long service life, and intelligent meter reading. It is an ideal product for measuring and controlling electricity consumption in enterprises, institutions, newly built residential buildings, renovated old buildings, high-rise buildings, student apartments, and other residential areas.

The prepaid intelligent metering management system for student apartments is designed for the electricity management of college students. In the electricity management of student apartments, electrical appliances such as electric heating devices are prone to fire accidents, such as fast heating, electric kettles, induction cookers, electric frying pans, etc., which are commonly referred to as prohibited appliances in universities. To avoid accidents and complete the management of student electricity charges, our company has developed a prepaid intelligent metering management system for student apartments. The system distinguishes between malignant loads and resistive loads based on their characteristics. Malignant loads detect sudden power changes through pure resistive loads, and electrical appliances exceeding the set power point cut off power supply. The usage effect is obvious and has been successfully promoted and applied in many universities.

Features

1. Multi user energy meters can accurately measure high precision and measure active energy in both positive and negative directions, preventing electricity theft.

2. It has prepayment function, power outage for overdue payments, and various payment forms. Clearly display the electricity consumption information of each user through a digital tube, and cyclically display the remaining power of each household every four seconds. The upper digital display shows the user ID, while the lower digital display shows the current remaining battery level of the user.

3. Wide range of 15 (60) A, using magnetic holding relay, with strong overcurrent capability, suitable for users with large load changes.

4. According to user needs, single circuit, double circuit, and triple circuit can be used. Single circuit can control up to 39 households, double circuit can control up to 18 households, and triple circuit can control up to 12 households. The wiring is simple and the operation is convenient.

5. The whole machine has low power consumption (<6VA) and significant energy-saving effect. Specialized anti creep and watchdog circuits make operation more reliable

6. Low battery alarm function: The alarm battery level can be set. When the user's electricity consumption is lower than the set value, the battery level display window of the meter will automatically flash or give a power-off prompt to the user. It has a power outage alarm flashing prompt. When the power outage alarm is reached, the meter will automatically power off. If the user continues to use the remaining power in the meter, they need to swipe their card once to continue using it.

7. Adopting a dual CPU structure, it has strong functionality and excellent performance.

8. RF cards have the characteristics of contactless, moisture-proof, anti attack, good encryption, stable data transmission, and long service life. The data in the RF card can be stored for more than 20 years, and it adopts encrypted control logic and communication circuits for higher reliability.

9. This machine has a relay demagnetization function to prevent demagnetization. Every 8-15 minutes, all relays should be demagnetized once. If the user swipes their card during the demagnetization, the relay may not operate completely. When demagnetized again, the relay will be normal.

10. It has the function of indicating power phase loss.

11. Prepaid function: Purchase electricity first, use electricity later, and automatically cut off power without charge. There are flexible and diverse ways to purchase electricity, which can be done through RS485 network.

12. Malignant load control: When users use "malignant loads" such as electric heaters, electric stoves, and fast heating, the system automatically recognizes and cuts off power. After the malignant load is removed, the system automatically restores power supply.

13. Load control: A limited current can be set for each household. When the electrical load exceeds this limit, the system will automatically shut down, and power will be restored automatically after the load decreases. After 6 power outages, manual forced power transmission must be carried out to extend the service life of the load switch.

14. Time period control: 12 time periods can be set, and the system automatically implements timed power on and off functions.

15. Multi circuit power supply control: For the same user, in-phase multi circuit power supply is used, with one circuit for normal power consumption, load control, malignant load identification control, and timed power supply and shutdown control, while the other two circuits are only subject to real-time control for equipment such as air conditioning and lighting that are not subject to power restrictions. (This function is a customized feature, please specify when placing an order).

16. Remote reading of real-time data from the table (remaining power/cumulative power)

17. Real time power outage: Through the 485 network, the property management department can control the power on and off of users' electricity meters without leaving their homes, and the data inside the meters will not be lost.

19. Clearing the entire meter/single meter: Single household or entire meter clearing operations can be performed through software.

20. Mobile payment can be realized by following WeChat official account.

21. SMS power purchase reminder function: When the remaining power in the user's meter does not reach a certain value (which can be set through software), the power sales system can send a text message to the user through the SMS platform to remind them that the remaining power in the meter is low and to purchase electricity in a timely manner.

22. Network electricity price change function: When the electricity price changes, the new electricity price information can be transmitted to the meter through the 485 network.

23. Power outage alarm: Each household can be set with a power outage alarm. When the user's remaining power reaches this set value, the household will automatically power off to remind them to purchase electricity in a timely manner. Until the electricity is depleted and the meter is powered off again, users need to purchase electricity before power can be restored.

24. It can be integrated with the energy management platform, and our company can provide existing interfaces for multi-user electricity meters to be integrated with the energy management platform, making management easier.

Technical Specifications

1. Number of households for measurement: up to 39 households for single circuit, up to 18 households for dual circuit, up to 12 households for triple circuit. 2. Operating voltage: AC150-250V

3. Rated voltage: 3x220/380V 4. Calibration current: 10 (40) A, 10 (50) A, 15 (60) A

5. Starting current: 0.5% Ib

6. Working temperature: -20 ℃~+60 ℃

7. Accuracy level: 1.0 level

8. Display mode: digital tube display

9. Pulse constant: 1600imp/kWh, 600imp/kWh, 5000imp/kWh (for reference only, subject to actual factory production)

10. Whole machine power consumption:<6VA

11. Data protection: Data retention after power outage:>10 years

12. Wire cross-sectional area at the output end: ≤ 10mm2

13. External dimensions

Single circuit:

• 1-12 households: length 251mm x width 358mm x thickness 130mm

• 13-24 households: length 440mm x width 358mm x thickness 130mm

• 25-36 households: length 616mm x width 358mm x thickness 130mm

• 37-39 households: length 675mm x width 360mm x thickness 130mm

Dual circuit:

• 1-12 households: length 251mm x width 358mm x thickness 130mm

• 13-24 households: length 440mm x width 358mm x thickness 130mm

• 25-36 households: length 616mm x width 358mm x thickness 130mm

Three circuits:

• 1-12 households: length 251mm x width 358mm x thickness 130mm

• 13-24 households: length 440mm x width 358mm x thickness 130mm

• 25-36 households: length 616mm x width 358mm x thickness 130mm

Appearance and installation dimensions

(For reference only)

1. Single circuit

2. Dual circuit

wiring diagram

(For reference only, provide examples)

Purpose and Scope of Application

Under normal use, the digital tube of a multi-user energy meter displays the meter number, sales software unit number, user number, and total remaining power in a loop. When the power outage alarm is reached or the remaining power is zero, the relay is disconnected, and the digital tube in the lower row flashes 0.0 per household, prompting the user to purchase electricity and recharge in a timely manner. When recharging and swiping a card, the electricity meter first displays the user's current purchase amount, and then displays the user's accumulated remaining amount. If the power outage alarm is reached, the remaining power in the meter can continue to be used, and the user needs to swipe their card again to continue using the remaining power in the meter.

Meter reading method

1. Direct reading meter reading

The display window of this electric energy meter has two rows of LED digital tubes, and the upper row displays the user number: for example, 0001 represents the first household; 0002 represents the second household... The user number 0001 in the upper row corresponds to the electricity consumption of the first household in the lower row, and so on. The highest display shows 99999.9kWh, with one household switching every four seconds.

2. Computer networking remote automatic meter reading (user selected).

Inspection and calibration table and RS485 port diagram

There is a seven pin socket (for inspection and calibration) and a 4-pin socket (for RS485) on the upper case of the watch, as shown in the figure:

1. Input the current line from the input end of the verified user through the calibration device, output it from the output end of the user, and apply the voltage line between this phase input line and the neutral line N.

2. By using a dedicated seven pin plug, apply one pin (positive pulse) and seven pins (negative impulse) of the seven pin socket to the pulse input of the calibration table. The pulse constant of the tested multi meter is single-phase K=1600i m p/KW. h and three-phase K=1600i m p/KW. h.

3. Short circuit the 4-pin (verification end) and 6-pin (signal ground) of the seven core socket to fix the display of the number of households being tested, which can detect the current displayed user error, and so on. Power display verification method: This multi-user energy meter has a power display function. When the verification plug is inserted into a seven pin socket, the digital tube in the lower row of the meter will no longer display the remaining power, but the corresponding household's power consumption. After the verification is completed, be sure to unplug the seven pin plug.

Transportation and storage methods

1. The transportation and assembly of electric energy meters should not be subjected to severe impacts, and should be transported and stored in accordance with ZBY00382/84 "Technical Conditions for Instrument Packaging".

2. When not in use temporarily, do not damage the original packaging. Store in an environment with a temperature of -25 ℃ to+70 ℃ and a relative humidity of no more than 85%. Long term storage should be moisture-proof, shock resistant, and heat-resistant.

Safety Precautions

1. Please read the manual carefully and pay attention to the wiring method. Do not connect the household number and the live and neutral wires incorrectly to avoid damaging the electricity meter.

2. The electric energy meter must be installed in the distribution box and should not be installed in a leak proof manner to prevent rain and sun exposure.

3. The neutral wire of the electric meter only provides the electric meter circuit, and the distribution box should not be operated without a neutral wire. Additional user neutral wire and ground wire terminals should be installed inside the distribution box.

Special Reminder: After wiring the electricity meter, it should be carefully checked to avoid zero operation!