一、Descriptions
DDSF54 single phase multi-tariff electronic energy meter is equipped with advanced energy measure chip and reliable MCU circuit, adopting digit process technology and advanced SMT surface process, the meter has reached the advanced international standard level. It can record user consumed energy in different period of time according to preset multi-tariff parameter. Through infrared program or RS485 interface, it can realize parameter set and data read in local or in remote. Through RS485, data network build energy parameter collection in long distance. The relevant parameters of meter are showed thorough LCD display.
All the parameters and capability are completely conform to below technical standard:
GB/T17215-2002
GB/T15284-2002
DL/T614-1997
DL/T645-1997
Conform to Fujian province power supply company on single phase multi-tariff electronic energy meter technical criteria and communication specifications.
二、Specification and main technical guideline
2.1 Rated voltage:220V
2.2 Rated frequency:50Hz
2.3 Basic current:5(20)A, 10(40)A, 10(60)A
2.4 Meter constant: please see nameplate
2.5 Accuracy : grade 1.0 , grade 2.0
2.6 Start current: 0.4%Ib(grade 1.0), 0.5%Ib(grade 2.0)
2.7 Latent start: with logical design of anti latent stat, voltage reversal and rated voltage 115%, when no current is current circuit, the meter will not produce more than one pulse output.
2.8 Clock parameter
Clock accuracy (daily error): ≤0.5s（23℃
Battery capacity: ≥1Ah
Data keep time of electricity break off: ≥10年
2.9 Voltage range
Normal work voltage: ：0.7Un～1.2Un
2.10 Power consumption (LCD)
Voltage circuit power consumption: ≤1.0W和6VA
Current circuit power consumption: ≤1VA( under the condition of rated current)
2.11 Basic error
|
Load current |
Power factor |
Basic error |
|
grade 1.0 |
grade 2.0 |
|
0.05Ib |
1 |
±1.5 |
±2.5 |
|
0.1Ib-Imax |
1 |
±1.0 |
±2.0 |
|
0.1Ib |
0.5(inductive) |
±1.5 |
±2.5 |
|
0.8(capacitive) |
±1.5 |
—— |
|
0.2Ib-Imax |
0.5(inductive) |
±1.0 |
±2.0 |
|
0.8(capacitive) |
±1.0 |
—— |
2.12 Climate conditions
Normal work temperature: -15℃～+55℃
Ultimate work temperature: -20℃～+70℃
Store and transport temperature: -25℃～+70℃
Humidity : ≥95% (diffuse in natural way)
2.13 Figure dimension: 110mmx115mmx55mm
2.14 Weight: about 0.8kg
三、work principal
Chart 1 DDSF54 energy meter work principal diagram
When meter work, the user consumed energy transfer into voltage and current signals , after sampled by sample circuit respectively , processed by special IC of meter into pulse signal which is direct proportion with power consumed. LCD display recycled parameters which chose by user, recorded data can be transferred through infrared read unit or RS485 communication interface.
四、Main functions
4.1 Energy measurement
Measure bi-direction active energy meter;( reverse energy calculated as positive one), data protect time after electricity break off is more than 10 years
Store all tariff energy data of four months including current month, data transfer dividing line time is the set automatic read date.
4.2 Tariff and period of time
Program set day hour and low load two tariff eight period of time. Default set is 2 period of time, minimum interval of period of time is 15 seconds, period of time set can span zero clock.
Adopt inset crystal hardware clock circuit, with temperature compensation circuit. It can automatic adjust time, date and lunar year transfer with the valid year 2099.
五、Installation and operation
5.1 The meter should be installed in the meter case of inside and outside room with rain proof, meter case should be fix on the solid and fire proof wall.
5.2 The meter should be connected according to the connect diagram on the terminal cover, it’s better to adopt bronze line or bronze tie-in, all the bolt be fast screw down.
5.3 Meter dimension: length X width X height = 110mm x 155mm x 55mm
5.4 Connected as chart 3
chart 3
六、Transportation and storage
6.1 The meter should be avoid strike violently during transport and open, and should be transported and stored according to GB/T15464-1995
6.2 Storage and keep of meter should be place on shelf with original package, the height should be not more than 5 layers.
6.3 The place of storage should be clean, the temperature should be 0～40℃，relative humidity is not more than 85%, and no acoustic substance is in the air.
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