The user takes the IC card to the power supply department to pay for electricity. The power supply department uses the electricity sales management machine to write the purchased electricity into the IC card. The user holds the IC card and swipes the non-contact IC card (abbreviation) in the induction area. Swipe the card (the same below) to close the power supply and take away the card after power supply. When the remaining power in the meter is equal to the alarm power, the power will be turned off and the alarm will be triggered (or the buzzer will sound). At this time, the user can restore the power supply by swiping the card in the sensing area; when the remaining power is zero, the power will be automatically turned off and the user must Only when you pay for electricity with your card again can you resume using electricity.
Introduction to IC card electricity meters
It has a variety of anti-theft functions, small starting current, no creeping, wide load, low power consumption, flat error curve, and stable during long-term operation It has good performance, beautiful appearance, small size, light weight and easy installation. High accuracy: fully electronic design, built-in imported special chip, accuracy is not affected by frequency, temperature, voltage, and high-order harmonics. Long life: Using SMT technology and optimized circuit design, there is no need to adjust the circuit after the whole machine leaves the factory. Low power consumption: Adopt low power consumption design to reduce power grid line loss. Pre-purchase electricity; IC card transmits data to realize data readback, including: readback of total electricity, remaining electricity, accumulated electricity purchased in the meter, total number of electricity purchases and other information. Store table constants, initial values, user addresses, names and other information. Overload alarm, power outage, and remaining power alarm remind users to purchase electricity in time. Technical parameters: Using a long-life base meter, the accuracy level of extended service life is level 2 current range; 5 (20) A 5 (30) A 10 (40) A 20 (80) A Power consumption: ≤1W Main technical indicators 1. Using American AD7755 chip, stable and accurate, reliable performance 2. Accuracy level: 1.0, in line with GB/T17215-1998, IEC1036-1996 3. Current specifications: 5(20)A, 5(30)A, 10(40) A, 20(80)A 4. Rated voltage: AC220V 5. Rated frequency: 50Hz 6. Starting current: 0.4%Ib 7. Power consumption: ≤1W 8. Environmental working conditions: -20℃～+55℃, relative humidity No more than 85% (temperature +25℃) 9. Strong anti-electromagnetic interference ability, can operate in harsh power environments 10. Strengthened process control, unique process guarantee, high reliability design IC card smart electricity meter (three-phase) points There are two types: three-phase four-wire and three-phase three-wire. They are used for measuring active electric energy. The user pays for the electricity and inputs it into the meter, and then the meter can supply power. One household has one meter and one card. The cards are not interchangeable. You can use the card to use electricity. It has functions such as pre-charging electricity bills, automatic meter reading, preventing electricity theft, and automatically turning off the power when the power in the card is used up. At the same time, users' electricity purchase information is managed by microcomputer, making it easy to conduct inquiries, statistics, charging and printing bills. This product adopts the most advanced IC card technology and SMT technology as well as a dedicated electric energy measurement chip and a single-chip microcomputer as the core components of a fully electronic device. All technical indicators comply with the technical requirements of GB/T18460◆Main functions 1. Prepaid function : Pre-charge the electricity bill, and automatically shut down the power when the remaining power reaches zero. 2. Closing and pulling method: two specifications: internal switch and external power control switch. 3. Memory function: The data in the table can be saved for 10 years in case of power outage. 4. Display function: dual display, the meter shows the accumulated power consumption, and the LED display shows the remaining power and other information.
◆ Technical indicators 1. Accuracy level: 1.0, basic error, starting, and latent movement comply with national standards. 2. Current specification: 2.5(10)A 5(20)A 10(40)A 20(80)A 30(120)A 3. Meter constant: 1600imp/kWh 800imp/kWh 4. Power consumption <1.0W 5. Non-contact (radio frequency) IC card patented technology: Using the world's most advanced radio frequency IC card and base station technology, fully sealed, non-contact, moisture-proof, waterproof, anti-attack, anti-electricity theft, anti-magnetic, and good anti-interference performance. 6. Data voting error correction technology: Each data in the table is stored in five places. If the data is wrong, it can be corrected in several other places, so that the data is absolutely reliable and foolproof.