DDSY870型
電子式單相預付費系列電能表
Te DDSY870
Single phase electronic repayment kilowatt-hour meter
- 概述
本系列產品適合于實行先付電費后用電制度的場合進行單相交流有功電能的計量，可實現電量預購、負荷限制等功能，解決了供電部門收費的問題。
產品性能合GB/T17215-2002、GB/T18460.3-2001等標準，顯示方式可選（LED或LCD），具有壽命長、準確度高、過載性能好，功耗低和體積小等優點。
- Introduction
The series of products are applicable to the place where have rules of paying in advance and then consuming to measure single phase AC active electrical energy,it also has multiple functions,such as purchasing in advance, maximal load limiting, user’s information management.
Each of performation accords with GB/T17215-2002、GB/T18460.3-2001 standard, display mode can be selected (LED or LCD),it has many advantages,such as long service life、high accuracy、good overload、low consume and all volume.
- 規格型號
型號規格 | 參比電壓（V） | 額定頻率（Hz） | 標定電流（A） | 儀表常數（imp/kw.h） |
DDSY870 | 220 | 50/60 | 1.5(6) 2.5(10) 5(20) 10(40) 15(60) 20(80) | 見銘牌標識 |
2.Specifications and tes
Specifications and tes | Reference voltage（V） | Rated frequency（Hz） | Rated current （A） | Meter constant（imp/kw.h） |
DDSY870 | 220 | 50/60 | 1.5(6) 2.5(10) 5(20) 10(40) 15(60) 20(80) | As shown in nameplate |
3.技術參數
3.1電氣要求
3.1.1度等級：1.0級，2.0級
3.1.2正常工作電壓：0.9Un~1.1Un參比電壓
3.1.3限工作電壓：0.7Un~1.3Un參比電壓
3.1.4緣電壓：≥2000VAC
3.1.5功率消耗：≤2W
3.1.6視在功率：≤10VA
3.1.7起動：電能表在參比電壓、參比頻率及功率因數為1的條件下，當負載電不充為0.4%lb（1級表）、0.5%lb（2表）時電能表應該連續計量電能。
3.1.8潛動：當電壓回路加115%參比電壓，電流回路無電流時，電能表輸出的脈沖不多于1WH。
3.1.9設計壽命：≥10年
3. Technical parameter
3.1 Electrical required.
3.1.1 Accuracy rating：cl 1.0，cl 2.0
3.1.2Normal working voltage：0.9Un~1.1Un reference voltage
3.1.3Limiting working voltage：0.7Un~1.3Un reference voltage
3.1.4Isolation voltage: ≥2000VAC
3.1.5 Power consumption: ≤2W
3.1.6Apparent power：≤10VA
3.1.7Start:Under the condition that reference voltage, rated frequency and power factor is 1, the meter will record energy continuously.
3.1.8Creeping:when put on 115% rated voltage in voltage circuit ,and there is no current in current circuit,the pulse outputs less than 1wh.
3.1.9Designed life: ≥10 years
3.2環境要求
3.2.1正常工作溫度：－25℃-+60℃(三相)
3.2.2限工作溫度：－30℃-+70℃(三相)
3.2.3儲運和運輸溫度：－45℃—+70℃
3.2.4相對濕度：年平均小于80%
3.2 Environment requirements
3.2.1Normal working temperature：－25℃-+60℃(three phase)
3.2.2Limiting working voltage：－40℃—+70℃
3.2.3Transportation and Storage temperature：－45℃—+70℃
3.2.4Relative humidity (RH)：annual mean should be less than 80%
4、基本功能
4.1雙向計度功能，能夠測量正、反兩個方向的功率，且以一個方向累計電量，具有竊電功能；
4.2采用光電隔離技術輸出電能脈沖信號，發光二管指示用電；
4.3先購電后用電，預購電量用完則斷電；
4.4顯示屏輪流顯示使用電量和剩余電量；
4.5辨偽功能：當使用非指定介質時，電能表不會接受指令，拒操作；
4.6具有記憶功能，數據在斷電后不丟失，上電即可恢復；
4.7具有警報功能：當預購電量小于設定電量時報警提醒用戶即時購電；
可選功能：應急賒電功能、電價改寫功能、銷過戶功能、監控用電負荷功能。
4.Main function
4.1 This meter have function of two direction measurement,it can accurately measure the power of forward direction and reverse direction,besides,it accumulate quantity of electricity n one direction, and anti-theft.
4.2 Adopt photoelectric isolated technology,which output pulse signal, power supply will be can instructed by light emitting diode.
4.3 Paying in advance and then consuming,when the purchasing electricity has been used up, cut electricity off.
4.4 Can display used electricity and remaining power alternately.
4.5 Resolving ability:When using unspecified medium,the meter will not accept order, and refuse
to make its operation.
4.6 Memory function:when power failure,the data will not be lost,it can be recovered when there is electricity.
4.7 Alarm function:when electricity purchased in advance is less than preset electricity, it will alarm user to purchase electricity immediately
Optional functions: supplying electricity to meet an emergency(one time), correcting electricity prices function,loging out igned function, monitoring electricity load function.
5外形、安裝尺寸（單位：MM）
5.1產品外形尺寸：229.5mm*145mm*73.5mm.可也按客戶提供的外殼進行模塊設計；
5.2表計功能可根據客戶需求進行技術設計和開發。
5. Outline, mounting dimensions（MM）
5.1Outline dimensions: 229.5mm*145mm*73.5mm, the box can also be designed by module
5.2 Measurement function can be designed by customers’ demand to develop
