IC card prepayment meter (three-phase) DTSY238 IC card prepayment meter (three-phase) is a new type of electric energy meter developed by microelectronic technology. It is suitable for measuring the three-phase AC active power with rated frequency of 50Hz or 60Hz, and can realize the function of paying in advance and monitoring the user's load. It is another ideal product to reform the power system, realize the commercialization of power and effectively control and adjust the power grid load. Its technical performance completely conforms to GB/T 172 15-2002 national standard and JB/T8382-96.
Main functional characteristics
IC card ammeter has high accuracy: imported special metering chip is selected, with stable error, good linearity, high accuracy at low load and no need to adjust for long-term use.
Stable and reliable: strong anti-interference and overload ability, magnetic relay is selected to effectively control the power supply on and off.
Long life: it is manufactured by SMT advanced technology, and the main components are long-life devices.
Low power consumption: it adopts optimized structural design, and its own power consumption is low.
Data transmission: IC card can transmit the total electricity consumption (electricity purchase) and other information to the management machine to grasp the electricity consumption situation in time.
Alarm function: when the remaining power is insufficient, the alarm light flashes and the power is cut off to remind you to buy electricity.
Automatic power-off: the remaining power is zero, and the card cannot restore power supply until the power supply is purchased again.
Power inquiry: After the card is inserted, the accumulated power, total purchased power and remaining power will be displayed circularly.
Strong anti-destruction ability: the card holder is artificially destroyed, and the internal measurement and control is not affected.
One meter and one card: the electric card is only used for one meter through a special encryption algorithm to prevent technical power theft.
Variety specification
Name, model, accuracy, rated voltage (V), rated current (A) connection mode
Three-phase four-wire electronic prepayment watt-hour meter DTSY238 1 level 3× 380/220×1(2), 3× 1.5 (6),
3×3(6) is connected by current transformer.
3×5(25),3× 10(50),
3× 15(60)
3×20(80), 3×20( 100) direct access
3× 100/57.5 3× 1(2),3× 1.5(6),
3×3(6) is connected by current-voltage transformer.
This product is divided into three-phase four-wire and three-phase three-wire It is used to measure active electric energy. The electricity meter can only supply power if the user pays the electricity bill and inputs it. Each household has one meter and one card, and the cards are not universal. It uses electricity according to the card, and has the functions of pre-charging, automatic meter reading, anti-stealing, and automatic power off after using the card. At the same time, the user's electricity purchase information is managed by microcomputer, which is convenient for inquiry, statistics, charging and printing bills.
The product adopts the most advanced IC card technology and SMT technology, as well as all-electronic equipment with special electric energy metering chip and single chip microcomputer as the core components, and all technical indexes meet the technical requirements of GB/T 18460.
◆ Main functions of IC card ammeter
1. Prepayment function: charge the electricity fee in advance, and automatically turn off the power supply when the remaining power is zero.
2. Switching mode: there are two specifications: internal switch and external control switch.
3. Memory function: The data in the following table can be saved for 10 years in case of power failure.
4. Display function: double display, the meter displays the accumulated power consumption, and the LED displays the remaining power and other information.
◆ Technical indicators of IC card ammeter
1, accuracy grade: 1.0, basic error, starting and crawling meet the national standard requirements.
2. Current specification: 2.5 (10) a5 (20) a10 (40) a20 (80) a30 (120) a.
3. Meter constant: 1600imp/kWh 800imp/kWh.
4. Power consumption
5. Patented technology of contactless (RF) IC card: adopting the most advanced RF IC card and base station technology in the world, totally sealed and contactless, moisture-proof, waterproof, attack-proof, electricity-stealing-proof, antimagnetic and anti-jamming.
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 elsewhere, so that the data is absolutely reliable and foolproof.