1、 Overview

DTSY6607 electronic three-phase prepaid energy meter adopts advanced application specific integrated circuit design and fully automatic surface mount（SMT）Production process manufacturing. The circuit design and component selection of the electric energy meter are based on a large environmental tolerance, which can ensure long-term stable operation of the whole machine, high precision, high overload, low power consumption, and high reliability performance. Adopting advanced intelligence that meets international standardsICThe card technology implements a prepaid method and has a built-in magnetic holding relay. By controlling the relay to control the on and off of the load, the function of urging users to buy electricity before using it can be achieved.

The product complies withGB/T17215.321-2008《1Level and2Static AC Active Energy Meter andGB/T 18460.3-2001《ICCard prepaid electricity sales system3Part: All technical requirements for prepaid energy meters.

2、 Working principle

1Working principle diagram

The electric energy meter obtains voltage sampling signals from the voltage divider, current sampling signals from the current divider, voltage current product signals from the multiplier, and then generates a counting pulse proportional to the product of voltage and current through frequency conversion. Through frequency division, it drives the stepper motor to measure electricity.

Electricity metering pulse is transmitted through a photoelectric couplerCPUProcessed and stored in memory after computation. Managed by a computer information system, throughICCard reader/writer, capable of writing a certain amount of power and monitoring requirementsICThe microprocessor system in the card input table, throughCPUAfter calculation, provide display and alarm status signals.

3、 Specifications, models, and 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 circuit<1.0W，3.0VA；

current line< 1.0VA

Stealth: equipped with logic anti creep circuit

Voltage range:220V±10%

Working temperature range:-25℃~ +65℃

Storage time of power-off data>20year

4、 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 non vibrating wall. The height of the electric meter should be about1.8mabout.

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: held by the userICCards cannot be exchanged. If lost, please go to the power supply department(Electricity sales office)Purchase an additional one.

6. Preparation for purchasing electricity: Before purchasing electricity, users mustICInsert the card into the card slot once to facilitate sending the data in the table back to the computer database.

7. Electricity purchase method: When selling electricity, theICCard insertionICCard reader/writer, simultaneously operating computer, will be used

Encrypt and write the account number, pre purchased electricity, alarm electricity, capacity limiting method, and capacity limiting power, etcICCard.

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

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, then the over capacity electricity will be used60In seconds, the brake will be pulled3minute; If the user inserts the card and responds, the power supply can be immediately restored.

11. Accumulation limit: If purchased electricity+remaining electricity>Accumulation limit（10000kWh)If the purchased electricity is not read in, the display will show“Error=10”Reminder: The battery level in the card is still valid.

12. Warning reminder: When the remaining battery level in the meter is less than the "audible and visual alarm battery level", the "alarm indicator light" will flash (with an interval of1Display a reminder to the user to purchase electricity in seconds.

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 this table cannot be found after pulling the switchICCard, can be borrowed from neighborsICInsert the card to 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.

Figure 1 Outline drawing

Functional terminal wiring