DDSF89 Multi-rate single-phase Electronic Energy Meter is consisted by the single-phase metering units, multi-rate units and communication units. Import high-quality measurement using dedicated chip measurement and built-in relay to remote control power’s on-off and load. Built-in RTC clock can achieve multi-rate function, the meter can use English LCD screen to display various data and information, having infrared (matching), RS485 or carrier communication interface. The meter’s significant advantages: high measuring accuracy, good stability, strong overload, high reliability, it can measure active energy of 50Hz single-phase AC, is a instrument to help the power department to achieve the preferred-time’s measurement. Also can be connected with water meter, gas meter in one system.
Product function:
1、Remote control power’s on-off by M-BUS/RS485.
2、 Alarming function:
2.1 Can set the allowed maximum using power. If electricity load continuous high than allowed maximum using power in the set time, the power will off to alarm.
2.2 When the meter is abnormal,LCD will show response code to alarm.
3、 Multi-rate function
3.1 Positive and negative measuring electricity’s four-rates: tip, peak, flat, valley, negative electricity accumulated into the positive electricity, while measuring negative electricity separately.
3.2 Automatically save the current electricity data and the last 12 months electricity data.
3.3 Four rates have 10 day maximum period (tip, peak, flat, valley), Each month’s reading date automatic freeze this month’s electricity data. At the same time, support freezing the current electricity data manually by RS485.
3.4 Can set the parameters of infrared, RS485 or carrier communication interface, also can reading the meter’s data.
4、 Recording function
4.1 Automatically record the last three programming time and programming content at least.
4.2 Automatically record the last three overload’s beginning and end time at least.
4.3 Automatically record the last three remote power control’s beginning and end time at least.
5、Other function
5.1 Keyboard display: pressing the blue button on the meter’s board, the relevant data and information will rotate display.
5.2 When power cut, pressing the blue button on the meter’s board, the meter will be awoken and relevant data and information will rotate display.
5.3 Red button is programming permission button, it should be pressed once before programming meter. When programming end, it should be pressed once again to cancel programming permission. This button is protected by lead sealing.
Parameters:
1、Specs
Voltage: ~220V
Current:1.5(6)A 5(20)A 5(30)A 10(40)A 15(60)A 20(80)A
Accuracy grade: 1.0 2.0
Constant: 6400 imp/kwh 3200 imp/kwh 1600 imp/kwh 800 imp/kwh
Starting current: 0.4% Ib
Creep: having logic circuits to prevent creep.
2、Basic error
|
Current |
Power Factor |
Percentage of error limits |
|
0.05Ib
0.1Ib~Imax |
1.0 |
±1.5
±1.0 |
|
0.1Ib |
0.5（Induction）
0.8（Capacitance） |
±1.5 |
|
0.2Ib~Imax |
0.5（Induction）
0.8（Capacitance） |
±1.0 |
3、Performance indicators
3.1 Working voltage: ~154V—~264V
3.2 Whole power cost: less than 2W
3.3 Working temperature: -30℃～+60℃
3.4 Limit working temperature: -４0℃～+７0℃
3.5 Relative humidity: 25%～95%
3.6 Clock accuracy: Better than 3S/d in working temperature
3.7 Battery capacity: 1.2AH
3.8 Display: LCD screen (backlight board with optional)
3.9 communication interface: infrared (matching), RS485 or carrier
3.10 Communication wave: can be set in 1200、2400、4800、9600bps, 1200bps is tolerant.
3.11 Outer size: 172㎜×115㎜×67㎜
3.12 Weight: about 0.75㎏
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