1. Overview

DTSY1376The three-phase electronic active energy meter is used for measuring active energy in power supply departments, factories, enterprises, commercial and agricultural power and lighting equipment. The meter adopts imported specialized large-scale integrated circuits,A new type of electric energy meter designed and manufactured based on the actual electricity consumption of industrial users using 16 bit A/D conversion, digital multiplier, digital sampling processing technology, and SMT process. Used for measuring AC three-phase active energy with a frequency of 50Hz, and the amount of electricity is displayed on a liquid crystal display,Intuitive reading for easy meter reading,This instrument is equipped with infrared communication andRS485Communication, forthree-phaseElectric energy measurement provides advanced and reliable measurement tools.

The metering module used in this meter can measure three-phase positive and negative bidirectional active energy. Accurate, stable, reliable measurement, with good resistance to electromagnetic interference, low power consumption, high accuracy, anti-theft, wide range, long life and other characteristics.

All performance indicators of this product comply withGB/T17215.321-2008《Level 1 and Level 2 Static AC Active Energy Meters、DL/T 645—The 1997 "Communication Protocol for Multifunctional Energy Meters" specifies the technical specifications for energy meters.

2. Working principle

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 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 converted into a pulse proportional to the magnitude of the electrical energy. This pulse is used to drive the meter for energy accumulation and the pulse indicator light, and outputs the pulse for measurement.

3. Specifications, models, and technical indicators

3.1 Specification and model

3.2 Basic Error (Balance Load Basic Error Limit)

The percentage error limit of each current point in an unbalanced load isLevel 1 Table ±2.0，Level 2 table ± 3.0.

3.3 start

When the reference voltage, reference frequency, and power factor are1.0Under the condition of, the load current is0.004Ib(Level 1)、0.005Ib(Level 2) The instrument should be able to start and continuously measure electrical energy.

3.4 shunt running

Voltage circuit addition1.15When there is no current in the current circuit and the reference voltage is multiplied, the test output of the instrument should not generate more than one pulse.

3.5 Working voltage range

Normal operating voltage:0.9Un～1.1Un

Maximum operating voltage:0.0Un～1.15Un

3.6 power consumption

Power consumption of each phase voltage line≤2W/10VA

Power consumption of each phase current line≤4.0VA

3.7 environmental condition

Normal operating temperature:-10℃～+45℃,

Working limit temperature:-25℃～+55℃,

Storage and transportation temperature:-25℃～+70℃

Relative humidity: Annual average≤75%

3.8 External dimensions

Ordinary shell:228mm×144mm×72mm

White flip or new white flip shell:216mm×145mm×72mm

3.9 Weight: Approximately1.5kg

3.10 Security Performance

The product complies withThe various safety indicators and requirements specified in GB/T 17215-2008.

3.11 The power display adopts a 7-digit LCD display. After the electricity meter is powered on and fully displayed, the lower constant is displayed, and then the total power is displayed.