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DDSY450J Single-phase electronic RS485 type prepaid watt-hour meters

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Product Description

  • brief introduction
  • technical parameter
  • Product size

Main application

It was used in single phase user measure power,mostly in new building and house building and rural. it has prepaid fee function ,specially resident house zone ,enterprise factory and school, it can resolve the problem which  the charging fee is very different, it is one effect way which improve demanding and manage work.


Technology data

Standard reference voltage(V): 220

Standard current: 2.5(10),5(20),10(40),15(60), 20(80),30(100)

Max current : not more than 100A , and it would not more than standard current 10 times

Standard reference frequency (Hz): 50, 60


Products standard

1. GB/T 18460.3-2001(IC card  prepaid sell power system third section : prepaid kwh meter )

2. GB/T 17215.321-2008《class 1 and class 2static ac power meter 》

3. DL/T 645-1997《multi function kwh meter comm-unication》 

products characteristic

1. High quality high accuracy high agility high stabilization , width measure ,low loss and other professional measure core were adopted.

2. Mainly component was take high quality and profession  electric meter design's component .

3. Voltage collect signal loop is resister sub voltage way .

4. Current collect signal loop take high quality ,high accuracy high stablity high measure's manganin shunt .

5. Display  is stability LCD.

6. Cover instruction is substance anti fire and anti aging ,good sealing.

7. RS 485 communication adaptor take independence power supply electric ,and have prevent static  surge protect circuit.

8. Patent technology  Auto protect relay was adopted it is  high stability and low loss.

9. IC card is transmit medium ,one card one meter ,the data will calculate after encrypting ,good safety.

10. The use data will copy back to IC card.



External And Installation Size