1、 Overview

DDSY6607 electronic single-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.

2Data processing

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、 Electrical parameters (reference conditions):

Starting current:0.4 %

IbPower consumption: voltage circuit<1.0W，3.0VA

；current line

< 1.0VA

Stealth: equipped with logic anti creep circuitVoltage range:220V

±-2510%Working temperature range:℃

~ +55℃Storage time of power-off data

>20

year

4、 Installation and use1. 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 about

1.8m

about.

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 must

IC

Insert the card into the card slot once to facilitate sending the data in the table back to the computer database.

Figure 1 Outline drawing

Figure 2 Wiring diagram5、 Transportation and Storage1. The table should not be subjected to severe impact during transportation and unpacking, and according to

GB/T15464-1995The Technical Conditions for Packaging of Instruments and Meters stipulate transportation and storage.-252The energy meter should be stored in its original packaging at an ambient temperature of℃~ +55℃, relative humidity not exceeding585%10In an environment without corrosive gases in the air. When storing electric energy meters on shelves, the stacking height of the entire box should not exceed

The stacking height of individual packaged electric energy meters after unpacking shall not exceed

Only.