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3 Phase Kwh Meter

3 Phase Kwh Meter

DTSU666 series three phase four fire electronic energy meter (DIN Rail) Summary: DSU666□series electronic energy meter is designed for power monitoring and energy measurement such as power system, communication industry, construction industry, etc. to be a new generation of programmable...

Product Details

DTSU666 series three phase four fire electronic energy meter (DIN Rail)

Summary: 

DSU666□series electronic energy meter is designed for power monitoring and energy measurement such as power system, communication industry, construction industry, etc. to be a new generation of programmable intelligent instrument, integrated with measurement and communication function, mainly used for real-time measurement and display for the electrical parameters such as voltage, current, active power, reactive power, frequency, power factor, energy in the electrical circuit, etc.


1.Main functions and characteristics

◆DIN35mm standard DIN-Rail mount, with seven modular and segment LCD display;

◆Measuring function: it is characterized with measurement for voltage, current, frequency, active power, power factor, active energy and negative energy of the three phase four wire circuit.

◆Communication function: RS485 communication interface, supporting DL/T645-2007 protocol, and customizable for MODBUS-RTU protocol

◆Multi-rate function: it supports four rates including top, peak, flat and valley rate.

 

2.Specification and type selection:

Product  function

Model

DTSU666

DTSU666-D

DTSU666-F

Voltage    input

Direct    input

AC    3×220/380V

Current    input

Direct    input

5(80)A

Via    CT/PT

1.5(6)A

Voltage,    current, power, reactive power, frequency, power factor

NO

YES

 

Energy

Active    energy

YES

Reactive    energy

YES

Bidirectional    measurement

NO

YES

Multi-rate(clock)

NO

YES

Others

Demand

NO

YES

Power    impulse output

YES

 

Communication

IR

NO

YES

RS485

YES

Display    mode

Two    lines 7 segment LCD

Dimension

L×W×H(mm)

126×89×66 7 modulus


Note: RS485 communication is assumed to be DL/T645-2007 protocol, customizable Modbus-RTU protocol

 

3.Main technical performance and parameters

Technical parameters

Index

 

 

 

Input signal

 

 

voltage

Wiring mode

Three phase four wire

Voltage specification

AC 3×220V/380V

Specified work voltage range

0.9Un~1.1Un; the extensional work    voltage range: 0.8Un~1.2Un

Consumption of the voltage circuit

≤5VA/1W(each phase)

Resistance

>500kΩ

 

Current

Rated value

Via PT/CT input   AC1.5(6)A

Direct input   AC 5(80)A

 

Current overload

Via PT/CT input: instant:201max, time of application: 0.5S

Direct input: instant:301max, time of application: half cycle of the rated frequency

Consumption of the current circuit

≤2VA

Resistance

<20mΩ(each phase)

Frequency

Input range

(50±5%)Hz

 

 

Output

Display

Segment LCD

 

Measurement parameters & grade

Voltage Class 0.5; Current Class 0.5; Power factor Class 1;

Frequency Class 0.5;
     Active power: 1.5(6)A Class 0.5/5(80)A Class 1; 

Reactive power :Class 1;
     Active energy: 1.5(6)A Class 0.5/5(80)A Class 1;

Reactive energy: Class 2;

 

Energy

Multi-rate energy

Support positive/negative total active/reactive    multi-rate measurement function

Four-quadrant energy

Support reactive four quadrant energy    measurement function

Max. demand record

Support positive/negative total    active/reactive max. demand record, demand cycle and slip time can be set

Pulse constant

AC3×200V/380V  AC1.5(6)A     6400imp/kWh(imp/kvarh)

AC3×200V/380V  AC5(80)A     400imp/kWh(imp/kvarh)

 

Pulse signal output

Provide 1 set(active/reactive energy)optical signal and optocoupler isolated open collector electrical signal pulse    output, pulse length:80ms±16ms

 

Communication

RS485 communication

Support MODBUS-RTU or DL/T645-2007    communication protocol(switchable), the communication baud rate 1200bps,    2400bps,4800bps,9600bps can be set, assumed to be 9600bps


IR communication(*)

Support MODBUS-RTU or DL/T645-2007    communication protocol(switchable), Infrared wavelength: 900nm~1000nm  communication baud rate:1200bps communication angle: ≥±15°      communication distance:≥4m


Note: 1.The meter can only be the same as its corresponding technical performance and parameters.

2. The items remarked * is the optional items, which shall be specified by the customers while ordering.

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