Product parameters

Product Name: Hangzhou Huali DDS28 Single phase Electronic Energy Meter

Scope of application: Suitable for active measurement of commercial and residential users, rental housing, government agencies, etc

Main function: Smart forward and reverse active energy, reverse active energy accumulates based on forward active energy

Accuracy level: Active level 1; Active Level 2

Reference voltage: 220V

Current specifications: 1.5 (6), 2.5 (10), 5 (20) A

Communication protocol: DL/T645-1997 protocol

Current interface: RS-485 interface, far-infrared communication interface

Dimensions: 150mm × 106mm × 55mm　

Current specifications and transformer configuration

1.5 (6) A annotation: External 5A current output transformer

5 (20) A annotation: Direct table

10 (40) A annotation: Direct table

10 (60) A annotation: Direct table

Voltage specifications and meter pulse constant

220 V

1.5(6)A6400 imp/kw

5(20)A3200 imp/kw

10(40)A3200 imp/kw

10(60)A1600 imp/kw

20(80)A800 imp/kw

*Note: imp/kw represents the pulse constant, which represents the number of times the pulse indicator light flashes per kilowatt hour of electricity measured by the meter

Functional classification

• Energy metering function: measures the total active power, the total forward and reverse power, and the reverse active power is accumulated based on the forward power

• Display and indication function: I use LCD to display the current total battery level. When there is a pulse of electrical energy, the red light flashes

Anti flying function: The instrument has a function to prevent the measuring chip from flying away

• Output function: Equipped with optocoupler isolation active calibration meter pulse output function

• Display function: Under normal conditions, the instrument displays the current total battery level

Wiring method

Functional feature diagram

Anti theft function

If a user illegally removes or cuts off voltage or current connections, the electricity meter will issue an alarm signal until the user resumes normal electricity use.

• Open lid recording function

Prevent illegal changes to the circuit.

Lead sealed anti-theft function

Lead seals cannot be restored after one-time use.

Conventional display content of LCD screen

• Can display the current total power consumption

Meter reading method

Display meter reading: The total electricity consumption, voltage, current, power factor and other data of the meter can be queried on the LCD screen every month.

Communication meter reading: Through RS485 communication port meter reading and handheld infrared meter reading machine, combined with meter reading system, various electricity data of the meter can be read. And supports DL/T645-1997 multifunctional energy meter communication protocol.

Packaging Content

Huali DDS28 (LCD version) single-phase energy meter

Product User Manual (one copy per box)

• Product Warranty Form