Type

Accuracy class

Reference voltage

Current

Pulse constant（imp/kWh）

DDSU1218

1

220V

5(60)A

1200

Function name

Functional Description

Function provide

Measurement of kWh

Total active kWh (positive and negative in total)

■

Measurement of electricalparameters

U、I 、P、PF、F

■

Pre-paid mode

Through RS485 /4G communication prepaid recharge, data encryption

■

Control

Built-in high-capacity sub-holding relay to achieve load on-off control

■

LCD display

8 bits section LCD display

■

Communication

Communication interface: RS485,4G

Communication protocol: MODBUS-RTU,DL/T 645-2007

■

Multi-tariff

4 tariff rates, 14 time interval by day

□

Technical parameter

DDSU1218

Voltage

Reference voltage

100-240V

Reference frequency

45～65Hz

Consumption

<4VA(Each phase)

Current

Input current

5(60)A

Starting current

Connect directly: 0.004 Ib, connect via CT: 0.002In

Consumption

<4VA

Clock accuracy

Error ≤0.5s/d

Communication

Interface

RS485(A+、B-) / 4G

Connection mode

Shielded twisted pair conductors

Protocol

MODBUS-RTU   DL/T 645-2007

Mechanical performance

Outline (Length × Width × Height)

76*100*75.1mm

Maximum wiring ability (flexiblecable)

25mm²

Work environment

Work temperature

-25℃~55℃

Storage Temperature

-40℃~70℃

Relative humidity

≤95%(No condensation)