1. Overview

DTS6607、DSS6607The three-phase static energy meter adopts imported specialized large-scale integrated circuits,16positionA/DConversion, digital multiplier, application of digital sampling processing technology andSMTProcess, a new type of instrument designed and manufactured based on the actual electricity consumption of industrial users. This meter uses an independent three unit metering module to accurately measure the active energy of three-phase forward and reverse directions. Measurement errors have excellent long-term stability.Its performance meets the requirementsGB/T17215-2002 standard specifies the technical requirements for three-phase energy meters.

Main features: It has good resistance to electromagnetic interference, low self consumption, high precision, anti electricity theft, wide range, long life, and can display liquid level.

This meter is suitable for an ambient temperature of-10-50 ℃, relative humidity not exceeding 85%.

2.function and characteristic

1It has the function of bidirectional measurement of active energy, and the LCD display shows the total amount of electricity;

2HavingRS-485And infrared communication, which can remotely and conveniently read the total power of the energy meter;

3Can set or retrieve parameters such as total power consumption, instrument constant, meter address, meter password, etc;

4Equipped with a programming switch, it can be programmed online;

5The chip has a watchdog system inside, making data more secure and reliable,Long term storage of power outage data (continuous power outages can be stored for more than 10 years);

6Isolated power sources, namelyCPUMeasurement section andRS485The interface provides reliable working power supply.

7It has a phase failure indication function.

8Communication protocol

According to the Multi function watt hour meter communication protocol》DL/T 645-1997 Electric Power Industry Standard of the People's Republic of China shall be implemented.

3.Working principle

The working principle of DTS6607 and DSS6607 three-phase static energy meters is shown in Figure 1.

This electric energy meter adopts a three-phase power supply mode and can work normally under any single-phase power supply situation.

When the electric energy meter is working, the voltage and current are sampled separately by the sampling circuit, and then sent to the large-scale dedicated integrated circuit for buffering and amplification, and thenThe 16 bit A/D converter converts the signal into a digital signal, which is then processed by a digital multiplier and sent to the CPU for further processing. Finally, the CPU sends the processed data to output units such as the display section and step counter as needed.

picture1: Working principle diagram of DTS345 and DSS345 three-phase static energy meters

4. Specifications, models, and technical indicators

4.1 Specification and Model

4.2 Basic Error (Balance Load Error Limit)

Note:（IbRated currentImax maximum current

4.3 Start up

At reference voltage, reference frequency, andUnder the condition of COS φ=1.0, the load current is 0.001Ib (0.5level）The 0.002Ib (level 1) instrument should be able to continuously measure electricity.

4.4 Submersion

Voltage circuit with rated voltageWhen there is no current in the current circuit at 115%, the test output of the instrument should not generate more than one pulse.

4.5 Voltage Range

Normal operating voltage:0.9Un-1.1Un

Maximum operating voltage:0.8Un-1.15Un

4.6 Power consumption

Voltage line power consumption:≤ 2W and 5VA

Current line power consumption:≦1VA

4.7 Climatic Conditions

Normal operating temperature:-10 ℃+45 ℃ Extreme working temperature: -20 ℃+55 ℃

Storage and transportation temperature:-The humidity can reach 95% for 30 days of the year (naturally diffused) at 25 ℃+70 ℃, and sometimes up to 85% for the rest of the time.

4.8 Mechanical dimensions

External dimensions:228mm×144mm×72mm

4.9 Weight:About 1.2kg