DDSF977 Single Phase Electronic Multi-rate Watt-hour Meter
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Application
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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. |
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| Functions and features |
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■ 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.
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| Technical parameters |
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Type
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Accuracy
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Rated voltage (V)
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Rated current (A) |
Starting
Current
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Insulation
Performance
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DDSF977
DEM031)
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Class 1
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220V
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2.5(10), 3(15),
5(30), 10(50),
15(90), 20(100),
5(40), 5(100)
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0.4%Ib
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AC voltage 2KV for
1 minute inpulse
voltage 6KV
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Class 2
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0.5%Ib
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