詳細(xì)介紹(introduction)：

    DDSF879系列電子式單相多費(fèi)率電能表是我廠為滿足市場(chǎng)需求而研制開發(fā)的計(jì)量新產(chǎn)品，該產(chǎn)品采用國(guó)外的電能計(jì)量芯片、的CPU、RTC時(shí)鐘芯片、顯示器（計(jì)度器）以及T工藝制造。其特點(diǎn)是對(duì)電量能根據(jù)不同時(shí)段分別計(jì)量，具有四費(fèi)率、十二時(shí)段、竊電、高、高性、高過載、低功耗、重量輕等優(yōu)點(diǎn)。尖、峰、平、谷費(fèi)率及各時(shí)段可按需要設(shè)定。

    電能表采用濾波網(wǎng)絡(luò)，具有較強(qiáng)的干擾能力。

    本產(chǎn)品采用標(biāo)準(zhǔn)GB/T 17215-2002《1級(jí)和2級(jí)靜止式交流有功電能表》、GB/T 15284-2002《多費(fèi)率電能表 要求》、電力行業(yè)標(biāo)準(zhǔn)DL/T 614-1997《多功能電能表》等。電能表具有紅外通信口和RS485通信口，通信規(guī)約合電力行業(yè)標(biāo)準(zhǔn)DL/T 645-1997　《多功能電能表通信規(guī)約》。生產(chǎn)本產(chǎn)品的質(zhì)量管理體系通過了GB/T 19001(ISO9001)。

    供電部門可利用的編程器通過紅外或RS485接口設(shè)置費(fèi)率時(shí)段、時(shí)間日期、編　　程等等內(nèi)容；通過的抄表器讀取電能表上除外的各種信息，并在合法授權(quán)　　下進(jìn)行對(duì)時(shí)。紅外通信距離不小于 4米 ,通信角度不小于15°。抄表器可將數(shù)給計(jì)算機(jī)。用戶可根據(jù)需要選配EIA-RS485接口。

　　注：其中LCD液晶顯示的載波多費(fèi)率電能表具有電力線載波抄表、遠(yuǎn)程負(fù)荷控制的功能。

　　結(jié) 構(gòu)：

　　■ 表殼采用密封塵結(jié)構(gòu)，阻燃、老化。
　　■ 具有紅外通信口和RS485通信口。
　　■ 1只紅色LED燈指示電量脈沖，電表每累計(jì)一個(gè)脈沖當(dāng)量的電能時(shí)，脈沖燈閃爍。
　　■ 一路光耦隔離脈沖輸出，輸出寬度約為80ms，供校驗(yàn)使用。
　　■ 采用長(zhǎng)壽命、亮度LED燈作時(shí)段指示。
　　■ 電量顯示采用雙計(jì)度器、LCD液晶顯示和LED數(shù)碼管顯示三種形式。在正常使用條件下，其顯示器的壽命大于10年。
　　■ 工作電源采用變壓器隔離。
　　■ 在電表內(nèi)有編程控制開關(guān)，在接線端子塊上裝有電量脈沖輸出口和RS485接口。

　　技術(shù)參數(shù)：

　　■ 額定電壓(V)：220，230
　　■ 工作電壓范圍：70%Un～120%Un
　　■ 額定電流(A)：5(20) , 5(30), 5(50),10(40), 10(60) ,15 (60) ,15(90),20(80) ,10(100)
　　■ 額定頻率(Hz)：50，60
　　■ 準(zhǔn)確度等級(jí)：1級(jí)，2級(jí)
　　■ 功耗：電壓回路≤2W，10VA；電流回路≤1VA
　　■ 工作溫度(℃)：-25～+55，限工作溫度(℃)：-45～+70
　　■ 相對(duì)濕度：≤75%（年平均）
　　■ 費(fèi)率：二/三/四種費(fèi)率可選；時(shí)段：≥8
　　■ 時(shí)鐘：0.5s/d( 23℃ )，隨溫度變化改變量0.1s/ (d·℃)
　　■ 電池容量（Ah）：≥1Ah,維持時(shí)鐘正常工作不少于10年
　　■ 外形尺寸（mm）：（LCD、LED顯示）；（雙計(jì)度器顯示）。
    ■ 平均使用壽命（年）：＞10

   功 能

　　■ 計(jì)量正、反向有功電能，反向電能按正向累計(jì)。
　　■ 電能量按總、尖、峰、平、谷分別累計(jì)和存儲(chǔ)。
　　■ 具有自動(dòng)抄表功能,指定每月某天的任一整點(diǎn)為抄表時(shí)間,能儲(chǔ)存12個(gè)月的歷史電量。
　　■ 日歷、計(jì)時(shí)和閏年自動(dòng)切換。
　　■ 能按用戶要求顯示日期、時(shí)間、費(fèi)率、電量等各種參數(shù)。

　　適用范圍：

　　■ 220V 5(20)A----10(100)A為直接接入式儀表，適用于實(shí)施分時(shí)計(jì)價(jià)的城、鄉(xiāng)居民照明計(jì)費(fèi)用表。

DDSF879 Static Single-phase Multi-rate Watt-hour Meter (Double-counter/LED/LCD /LCD with PLC)
Main Features
■ Adopting special filtering network with strong anti-jamming ability
■ Adopting most advanced measurement chip, high-accuracy CPU, RTC and displayer
■ Manufactured with advanced T process
■ Measuring energy in different time segments respectively with 12 time segments and four tariffs (sharp/peak/ shoulder/off peak) programmable
■ Excellent anti- tamper & fraud function
■ Reliable function, high precision, high overload, Low self-consumption, light weight
■ Setting time segment, clock, pwords and other information by special programming device through RS485 or infrared interface.
■ Read all kinds of information except pwords by special reader and check the time when legally authorized
■ Distance of infrared communication can be more than 4 meters and communication angle be more than 15°
■ The reader can transfer the data to a computer
■ EIA-RS 485 interface can be added as per user.
■ The PLC meter with LCD have the function of PLC reading and remote load management
■ With RS485 and infrared communication interface whose communication protocol meeting DL/T645-1997 on multi-function Watt-hour meter communication protocol
■ Meeting standard GB/T17215-2002 (IEC61036: 2000) on “Alternating current static Watt-hour meters for active energy (cles 1 and 2)”,GB/T on particular requirement for multi-rate electricity meters and DL/T 614-1997 on multi-function Watt-hour meter
■Ped JQAC certificate according to GB/T19001 (ISO9001) Structure
■ With sealed case of flame-retardant、rust-proof and anti-aging
■ With RS485 and infrared communication interfaces.
■ Red LED indicating power pulse and flashing once per pulse
■ One channel of optical pulse output for calibration with width of about 80ms
■ Long-life & -bright LED indicating time segments
■ Under normal conditions, the life of displayer( register、LED or LCD can be selected) is more than 10 years.
■ Working power supply is isolated by transformer
■ With program control switch within the meter
■ Having energy pulse output interface and RS484 interface on terminal block.
Technical Parameters
■ Rated Voltage(V) : 220，230
■ Operation Voltage (v): 70%Un~120%Un
■ Rated Current (A): 5(20), 5(30), 5(50), 10(40), 10(60), 15(60), 15(90), 20(80), 10(100)
■ Rated Frequency(Hz):50，60
■ Accuracy: cl1, cl2
■ Power Consumption: voltage circuit:≤2W/10VA; current circuit:≤1VA
■ Ambient Temperature(℃): -25~+55，limits of temperature(℃)：-45~+70
■ Relative Humidity:≤75%（annual average）
■ Tariff Selection: two/three/four tariffs ; time Segment:≥8
■ Accuracy of Clock: 0.5s/d(23℃)and variation with respects to temperature is better than 0.1s/(d·℃)
■ Capability of Battery: ≥1Ah(keep clock working for more than 10 years)
■ Size(mm):（LCD/LED）；（double- counter）
■ Life(year):＞10
Function
■ Measuring positive & negative active energy with negative energy accumulated into positive energy
■ Separately accumulating and storing the energy of each tariff (sharp/peak/ shoulder/off peak of the power)
■ Read automatically at any integral time of day in a month and can store total energy of 12 months
■ Able to show calendar, check time and make automatic adjustment in leap year
■ Displaying date, time, tariff, energy quantity and other parameters as per customers
Scope of Use
■ 220V 5(20) A----10 (100)A is for direct connected meters suitable for residential energy measurement (energy charged by multi-tariff) at urban or rural areas.