1. Overview

DDSType series single-phase electronic energy meter,Adopting advanced ultra-low power solid-state integrated circuit technology andSMT advanced technology is used for measuring AC single-phase active energy,Widely used to measure the electricity consumption of residential buildings, offices, shops, and other facilities.

Its performance meets the requirementsGB/T 17215.321-2008Special Requirements for AC Measurement Equipment21Part: Static active energy meter(1Level and2level)》Technical requirements for single-phase electronic energy meters in the standard. When communicating, the protocol complies withDL/T 645—1997 or DL/T 645—2007 Multi functional Energy Meter Communication Protocol.

2. Functional Features

2.1 The electric energy measurement is accurate and stable, and there is no need to adjust the whole machine after leaving the factory. It can extend the calibration cycle and greatly reduce the workload of testing and verifying electric energy meters in the power department,The reliability has significantly improved compared to similar products.

2.2 Bidirectional metering function, capable of measuring both positive and negative electrical energy, accumulating total electrical energy and possessing anti-theft function.

2.3 By using photoelectric isolation to output electrical energy pulses, error detection can be performed, and the luminous tube indicates power consumption.

2.4instrumentIt has the advantages of wide load, high accuracy, high reliability, high sensitivity, straight error curve, small size, light weight, low power consumption, strong overload capacity, and easy installation.

2.When the instrument is equipped with infrared or RS485 communication, please request the communication data items from the manufacturer.

3. Specifications and main parameters

3.1 Specification and model(Note: Special specifications, can be customized according to user needs)

3.2 BaseThis error

3.3start:When the reference voltage, reference frequency, and power factor are1Under the condition of, when the load current is0.4％Ib（1Level table)0.5％Ib（2When using a level meter, the energy meter should be able to start and continuously measure electrical energy.

3.4Subtle movement:When the voltage line is115%When there is no current in the reference voltage and current circuit, the output pulse of the electric meter should not exceed1individual.

3.5power waste:≤ 2W and 10VA.

3.6 Working voltage rangeSpecify the working voltage:0.9～1.1Reference voltage, maximum operating voltage:0.0～1.15Reference voltage.

3.7 temperature rangeSpecify the working temperature:-25℃～+55℃, maximum operating temperature:-40℃～+70℃.

3.8 Humidity range: Annual average relative humidity<75%.

3.9 Safety performance: The product complies withGB/T 17215.321-2008The requirements for safety indicators as stipulated.

4. Working principle

The instrument samples current and voltage separately through sensorsA/DConversionDSPMultiplierD/FTransform, divide, count drivers and other circuit processing, output pulse indication, display cumulative power.