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DDSF977 Single Phase Electronic Multi-rate Watt-hour Meter

Application
 
Type DDSF977 single phase DIN rail watt-hour meter is a kind of new style single phase electronic multi-rate watt-hour meter, energy data display adopt 4 digits wide tempera-ture type crystal display, with many functions of multi-rate (time-of use) energy measurement, infrared carrier wave communication and RS485 serial port communication reading meter, etc. The meter completely accord with relevant technical requirements of class 1 and class 2 single phase energy meter stipulated in
National standard GB/T17215-2002 and international standard IEC1036. it has followeing features:Good  reliability, small volume, light weight, specious nice appearance, convenient installation, etc.
 
Functions and features
 
May select 35mm DIN rail installation or installation on the board.
Have 3 tariffs, 12 daily period of times, may select single tariff function in weekend.
Inner emplaced clock, after power cut down, the message is preserved forever,inner emplaceed
spare batteries and free of maintenance.
The direction of electric power can be distinguished automatically, accident is checked automatically.
Infrared carrier wave communication and RS485 serial port communication, meter is set up by
     program and password is protected.
 
Technical parameters
 
Type
Accuracy
Rated voltage (V)
Rated current (A) Starting
Current
Insulation
Performance
DDSF977
DEM031)
Class 1
220V
2.5(10), 3(15),
5(30), 10(50),
15(90), 20(100),
5(40), 5(100)
0.4%Ib
AC voltage 2KV for
1 minute inpulse
voltage 6KV
Class 2
0.5%Ib