DTSDU866/DSSDU866 Three phase rail type multifunctional electric energy meter (Digital display model)

Overview

DT (S) SD866/4P three-phase active energy meter, hereinafter referred to as the instrument, is an indoor three-phase energy meter designed and developed by our company to adapt to the transformation of China's power grid and the national conditions. It has high accuracy and feasibility. This instrument adopts internationally advanced ultra-low power large-scale integrated circuit technology and SMT advanced process. The key components are selected from international brands and long-life devices, which improves the reliability of the product and extends its service life. Accurately measure active energy and can read the amount of electricity through infrared communication, making the reading intuitive and easy to use. This instrument design complies with the relevant technical requirements for three-phase static energy meters in standards GB/T 17215.321-2008 "Level 1 and Level 2 Static AC Active Energy Meters", GB/T 17215.323-2008 "Level 2 and Level 3 Static AC Reactive Energy Meters", and DL/T 645-1997 "Communication Protocol for Multi functional Energy Meters".

Specification Model

Main electrical performance indicators

• Starting current

  Connected through a current transformer: the active level 1.0 meter is 0.002Ib. Directly connected: the active level 1.0 meter is 0.004Ib.

  
  

• Stealth

  When the voltage circuit is 115% of the rated voltage and the current circuit has no current, the test output of the energy meter should not generate more than one pulse.

  
  

• power consumption

  Voltage circuit power consumption ≤ 1.5W/5VA, current circuit power consumption ≤ 2VA 3.4 Operating voltage range

  Normal operating voltage: 0.9-1.1 Rated voltage Limit operating voltage: 0.7-1.2 Rated voltage

  
  

• environmental conditions

  The standard operating temperature is -25 ℃ to+55 ℃

  The storage environment temperature is -40 ℃ to+70 ℃, and the annual average relative humidity is ≤ 75%

  
  

• Instrument safety performance

  The instrument indicators comply with the requirements of GB/T17215.321-2008 "Level 1 and Level 2 Static AC Active Energy Meters" and GB/T17215.323-2008 "Level 2 and Level 3 Static AC Reactive Energy Meters".

Main functions

1. Energy metering function

• Energy metering function: metering active positive and reverse energy, and separately metering reverse energy

• Three phase power supply, one or two phases of power outage, measurement accuracy is not affected. After the three-phase power supply is cut off, all stored data will not be lost and can be maintained for more than 10 years.

• It has the function of coupling isolated active and passive pulse test port output (meeting the requirements of remote pulse output, with a pulse width of 80ms ± 20ms).

2. Alarm function

• When the phase is missing, the corresponding phase indicator light will turn off.

• When the circuit breaker is pulled, the ABC three-phase indicator lights flash simultaneously (once every 3 seconds).

3. Communication function

• Communication can be achieved through handheld terminals or PCs to complete programming settings and meter reading. The communication symbol lights up during communication, making it convenient, intuitive, and reliable.

• The communication protocol Modbus RTU, specific identification code can be found in Appendix 2.

4. Display function

• Adopting wide temperature large LCD with backlight display.

• The button can query various electrical parameters and supports local programming of the button

Installation and wiring methods

• Before installation and use, the appearance should be checked for integrity. If it is intact, it can be installed and used. For instruments that are damaged or stored for too long, relevant departments should be asked to re inspect them. Only after passing the inspection can they be installed and used.

• Electric energy meters can be installed indoors or outdoors, and the base plate for installing the meter should be fixed on a sturdy fire-resistant wall. There should be no corrosive gases in the air to ensure safe and reliable installation and use.

• The electric energy meter should be wired according to the wiring diagram on the junction box, preferably with copper wire ends. The screws inside the terminal box should be tightened to avoid burning due to poor contact.

• The electric energy meter should be properly wired and can enter normal operation after being powered on. If any abnormal phenomena are found during use, users should not disassemble it without authorization and should seek the assistance of qualified professionals for handling.

  
  

• wiring diagram

  

  Three phase four wire mutual inductance wiring diagram

  
  

  

  Three phase four wire straight through wiring diagram

  
  

• Outline and installation dimension diagram

  

  
  

Transportation and Storage

• The transportation and unpacking of electric energy meters should not be subjected to severe impacts. They should be transported and stored in accordance with the provisions of JB/T 9329-1999 "Basic Environmental Conditions and Test Methods for Transportation, Storage and Transport of Instruments and Meters", and placed according to the requirements on the packaging box.

• The energy meter should be stored in its original packaging, with a storage environment temperature of -25 ℃ to+70 ℃, an average relative humidity not exceeding 75%, and no corrosive gases in the storage environment. It should be moisture-proof.

• Electric energy meters should be stored in the warehouse and placed on shelves with a stacking height of no more than 5 boxes. After unpacking, the stacking height of a single packaged electric energy meter should not exceed 10 pieces.

• Please do not power up the meter and contact the supplier as soon as possible if there are obvious signs of damage to the casing caused by severe impact or falling from a high altitude during transportation, retrieval, or installation.

display mode DiSP parameter values	content	Instructions
three-phase voltage diSP:		Display three-phase voltage values: The left image shows: A-phase voltage value: 220.0V B-phase voltage value: 220.2V C-phase voltage value: 219.8V Positive active energy value: 0.80kWh
three-phase current diSP:		Display three-phase current values The left image shows: A-phase current value: 1.5A B-phase current value: 1.6A C-phase current value: 1.8A Reverse active energy value: 0.80kWh
Three phase active power diSP:		Display three-phase active power values: The left image shows: A-phase active power value: 330W B-phase active power value: 328W C-phase active power value: 331W Positive reactive power value: 0.90kvarh
Three phase reactive power diSP:		显示三相无功功率值左图显示: A-phase reactive power value: 0.000kvarh B-phase reactive power value: 0.000kvarh Reactive power value of phase C: 0.000kvarh Total reactive power value: 0.000kvarh Reverse reactive power value: 0.09kvarh
Three-phase apparent power diSP:		Display three-phase apparent power values: The left image shows: A-phase apparent power value: 330W B-phase apparent power value: 329W C-phase apparent power value: 330W Reactive power value in the first quadrant: 0.00kvarh
Three phase total power diSP:		Display the total active power, reactive power, and apparent power of the three phases: The left image shows: Total active power: 3.3kW Total reactive power: 0.0Var Total apparent power: 3.3kVA Second quadrant reactive power value: 0.09kvarh
Three phase power factor diSP:		Display three-phase power factor values: The left image shows: A-phase power factor value: 1.000 B-phase power factor value: 0.999 C-phase power factor value: 1.000 Reactive energy value in the third quadrant: 0.09kVArh
Three phase total power factor diSP:		Display the value of the three-phase total power factor The left image shows: Total power factor: 1.000 Grid frequency value: 50.00Hz Zero sequence current: 0.000A Reactive energy value in the fourth quadrant: 0.09kvarh
Three phase line voltage diSP:		Display three-phase line voltage: The left image shows: AB line voltage: 380V BC line voltage: 380V CA line voltage: 380V Positive active energy value: 0.06kWh
Line self inspection diSP:		Display the direction status of ABC phase separation current: The second row is now from left to right Power direction of phase A, phase B, and phase C The left figure shows that the power of phases A, B, and C is reversed. The normal wiring should display: 000 ● Illuminates to indicate voltage reverse phase sequence The third row displays b L n: current phase sequence error alarm Positive active energy value: 978.42 KWh
Current voltage imbalance diSP:		Display current voltage imbalance: The left image shows: Voltage imbalance: 0.00% Current imbalance: 0.00% Reverse active energy value: 0.00kWh
Active demand diSP:		Display active power demand: 0W Positive active energy value: 0.00kWh
Reactive power demand diSP:		Display reactive power demand: 0var Positive active energy value: 0.00kWh
Three phase voltage singularity rate diSP:		Display the rate of three-phase voltage variation: The left image shows: A-phase voltage singularity rate: 0.00% B-phase voltage singularity rate: 0.00% C-phase voltage singularity rate: 0.00% Positive active energy value: 0.09kWh
Odd rate of three-phase current diSP:		Display the rate of variation of three-phase current: The left image shows: A-phase current singularity rate: 99.99% B-phase current singularity rate: 99.99% C-phase current singularity rate: 99.99% Positive active energy value: 0.09kWh

Note: The fourth row of power parameters on the LCD display will scroll and change.

Programming menu operation instructions:

Note:

1. PressEnter the next level menu with the confirmation key

2. When setting parameter valuesThe key is the shift key, and the rest are the exit keys

After setting the parameters, pressSave parameters and exit

Appendix 1: Modbus RTU Communication Format and Communication Code

Communication data format:

(Communication parameter: 9600 E 8 1 Read function code: 03)

Communication code:

MODBUS protocol modification communication parameter description:

Method to modify table number: To change the current table number 01 to the new table number 20, the command is as follows:

0110 0D B0 00 01 02 00fourteen 60 AF

01 (current table number) 14 (new table number in hexadecimal corresponds to 20 in decimal)

60 AF (CRC check)

Table number 1: Modify checksum description

01 10 0D B7 00 01 0200 00 61 17No checksum

01 10 0D B7 00 01 0200 01 A0 D7odd parity

01 10 0D B7 00 01 0200 02 E0 D6even parity

Table number 1 modified baud rate description

01 10 0D B6 00 01 0212 C0(6C 36）Change to 4800

01 10 0D B6 00 01 0209 60(66 B3）Change to 2400

01 10 0D B6 00 01 0204 B0(63 B2）Change to 1200

01 10 0D B6 00 01 0225 80(7B F6）Change to 9600