DDSY7766
1.Product Brief Introduction
The DDSY7766 type Singel-phase Electronic Pre-paid Watt-hour Meter is developed on the base of excellent single-phase electronic watt-hour meter. It is a new type of IC card pre-paid meter, which has such function as power metering, load control and customer information management. It is an ideal product when reforming electricaty-use system, achieving electrical energy commercializa, setting charge and adjusting load stage in the electric network. All the indexes comply with the technological specifications aiming to the single-phase electronic pre-paid watt-hour meter in the standard of GB/T17215-2002【Class 1 and 2 static A.C Active Watt-hour Meter 】and GB/T18640-2001.
2. Function and features
1.Active single-phase electric power metering, no subject to adjust in terms of long time working;
2.Each user [meter] responds to a card, well protect from forgery; 
3.Once the remaining electric power quality is approaching the alarming power quality, the digital tube should be lighted to remind user of timely purchasing;
4.Once the electric consumption available is out, it should be auto out-off;
5.Protect from power thett, and recording the information auto;
6.Auto cut -off for overload ;                
7.Date-copying function make the electricity department easier to manage; 
8.The meter has the feature of long-using-life, high-reliabnity;
9.The IC card power selling control system has the function of power selling and using control.