APPLICATION:
The meter is used by the sigle phase power consumer who use the energy with balance method after purchasing it. And it is also used for power load control.
FUNCTIONS:
Measure forward、reverse active energy and accumulate active energy in the same direction.
Purchase in advance of using electricity, allowed to overuse some amount energy..
LED or LCD display accumulative energy and remaining energy
Automatically cut off electricity under overload condition;
FEATURES:
A household with one meter, one meter with one password, high security with counterfeit-proof function.
Three level alarm remind user of purchasing electricity
Low power loss and high reliability
Shunt-proof logic IC without shunting
PARAMETERS:
Model DDSY 720 DDSY721
Class Active 1 2
Display LED /LCD
Rated Voltage 220V
Rated (Max.) current 2.5(10)A 5(20)A 5(30)A 10(40)A 20(80)A
Power
Loss V circuit <1W4VA
I circuit <1VA
Working temperature -25°C~55°C
Limited temperature -40°C~70°C
Relative humidity ≤85%
Voltage range 0.7Un~1.3Un
Reference frequency 50Hz/60Hz
Start Current 0.004Ib
Dimension 155mm?08mm?8mm