Single Phase Prepaid Energy Meter DDSY2788

Model DDSY2788 Electronic Single-Phase Prepaid Electric Energy Meter is a new type of IC card-based prepaid electric energy meter developed by our company on the basis of high-performance electronic single-phase electric energy meters. It integrates multiple functions such as electric energy measurement, load control, and user information management. This meter is an ideal product for reforming the electricity management system, commercializing electric energy, solving difficulties in fee collection, and regulating grid load conditions.

All performance indicators of this product comply with the full technical requirements for electronic prepaid electric energy meters specified in the standards GB/T 17215.321-2008 Class 1 and Class 2 Static Alternating Current Active Watt-Hour Meters and GB/T 18460.3-2001.

Technical Features:

◆ Active energy metering, no calibration required for long-term operation;

◆ One meter (household) with one card, featuring excellent anti-counterfeiting performance;
◆ When the remaining electricity equals the alarm threshold, the alarm light stays on to remind users to purchase electricity in time;
◆ Trips and cuts off power when the remaining electricity is 0;
◆ Anti-electricity theft function, automatically records illegal electricity usage information;
◆ Automatically cuts off power when overloaded, facilitating capacity increase by the power department;
◆ Large-capacity magnetic latching relay with low power consumption and high reliability;
◆ Equipped with data write-back function, facilitating management by the power department;
◆ All components in the meter are long-life and high-reliability electronic components, thus featuring long service life and high reliability;
◆ The supporting IC card electricity vending management system has complete functions such as electricity vending management and electricity usage supervision.
◆ RS485 communication interface expandable.


Technical Index	Data
Rated voltage	110V,120V,220V,230,240V
Working voltage range	0.8~1.2Un
Rated current	10(40)A,15(60)A,10(60)A,20(80)A,
	or special required
Frequency	50Hz or 60Hz
Connection mode	Direct type
Display	LCD
Accuracy class	1
Power consumption	<1W/10VA
Start current	0.004Ib
AC voltage withstand	4000V/25mA for 60 sec
Impulse voltage	6kV 1.2μs waveform
IP grade	IP51
Constant	800~6400 imp/kWh
Pulse output	Passive pulse, pulse width is 80+5 ms
Executive standard	IEC61036 ，IEC62053-21 ，IEC62052-11
Work temperature	-30℃~70℃
Outline dimension L×M×H	158×112×60mm
Weight	Approx 0.5kg


Rated Current（A）	Rated Voltage（V）	Rated Frequency (Hz)	Accuracy Class
3*1.5（6），385（20）	Three-Phase Three-Wire 3*380V	50 or 60	Class 1 or Class 2
310（40）,315（60）	Three-Phase Four-Wire 3220/380V or 357.7/100v
320（80），330（100）