詳細介紹：
DTY79-S系列電子式三相四線預付費電能表是我公司自行研制的具有電能計量、負荷控制和用戶信息管理等多種功能的新一代產品。該產品以單片機技術為，采用國外的計 量芯片、IC卡技術以及T技術，數據通過IC加密卡在用戶與管理系統之間傳輸，一戶一卡，具有竊電功能，可廣泛應用于工礦企業，居民小區物業管理及城鄉改造。
本產品具有體積小、功能全、性高等優點，是改革用電收費辦法，拖欠電費，實現電能商品化，控制和調節負荷的理想計量產品。
產品的性能指標合標準GB/T 17215-2002《1級和2級靜止式交流有功電能表》及GB/T 18460.3-2001《IC卡預付費售電系統第3部分：預付費電度表》。
■ 表殼采用密封塵水結構，阻燃、老化。
■ 1只紅色LED燈指示電量脈沖，電表每累計一個脈沖當量的電能時，脈沖燈閃爍。1只 LED燈指示電表拉閘狀態，1只LED燈用于指示缺相狀態，1只LED燈用于報警指示。
■ 電表IC卡插座在小門內，具有自保護功能，插卡時小門打開。
■ 一路光耦隔離脈沖輸出，輸出寬度約為80ms，供校驗使用。
■ 電量顯示采用LED數碼管顯示方式，剩余電量等于報警電量時，LED數碼管顯示常亮，同時發出報警信號聲，提醒用戶及時購電。
■ 采用IC卡作為電量傳遞介質。IC卡經過加密運算，一戶一卡，互不通用。
■ 采用鐵電存儲器，數據保存。
■ 采用大容量磁保持繼電器，低功耗高。
技術參數：
■ 額定電壓(V)： 3×220/380
■ 工作電壓范圍：70%Un～120%Un
■ 額定電流(A)：3×1.5(6), ,3×5(20), 3×5(30), 3×5(40), 3×10(40), 3×10(60), 3×15(60) ,3×20(80)
■ 額定頻率(Hz)：50
■ 準確度等級：1級 2級
■ 功耗：電壓回路(每相)≤3W，10VA；電流回路(每相)≤1.5VA
■ 工作溫度(℃)：-25～+55，限工作溫度(℃)：-45～+70
■ 相對濕度：≤75%（年平均）
■ 顯示范圍：0～999999kWh
■ 數據保護：斷電后數據保存時間＞10年
■ 外形尺寸（mm）：
■ 平均使用壽命（年）：＞10
功 能：
■ 正反向有功電能計量。
■ IC卡預付費用電，用電量遞減。
■ 剩余電量不足報警，剩余電量為或到達設定的賒欠電量值時，跳閘斷電提醒用戶及時購電。
■ 負荷時自動斷電（可選）。
■ 具有數據回寫功能。
■ 能顯示剩余電能量以及其它各種信息。
適用范圍：
■ 3×220/380V 3×1.5(6)A 為經互感器接入式儀表，適用于頻率為50Hz（60Hz）的三相三線制 高壓供電低壓計量實施預付費的大工業用戶計費用表及三相四線制低壓供電實施預付費的工業、非 工業用戶計費用表。
■ 3×220/380V 3×5(20)---- 3×20(80)A 為直接接入式儀表，適用于頻率為50Hz（60Hz）的 三相四線制低壓供電實施預付費的工業、非工業用戶計費用表。也適用于因電量大采用三相四線 制低壓供電實施預付費的居民照明計費用表。
Main Features
■ Using IC card /Having compositive functions of energy measurement, load monitoring and information management
■ Adopting foreign famous measurement chip and manufactured with advanced T process
■ Excellent against tamper and fraud function; high reliability ;all volume, multi-function
■ Ideal products for energy monitoring and load adjustment of electricity network
■ All specification meeting standard GB/T17215-2002 on “Alternating current static watt-hour meters for active energy (cles1 and 2) “and GB/T18460.3-2001 on Pre-payment vending system using integrated circuit (s) cards with contacts-part 3:Pre-payment electricity meters. Structure
■ With sealed case of flame-retardant ,water-proof rust-proof, water-proof and anti-aging
■ Having four red LED. One indicating power pulse and flashing once per pulse; One indicating on-off state of meter; One indicating state of phase absence; Another is for alarm indication.
■ Socket for IC card is designed in a all door with self-protective function and open the door to plug the card
■ One channel of optical pulse output for calibration with width of about 80ms
■Displaying energy by LED. When remaining energy reaches the alarm quantify. LED flashes while giving alarm voice
■One IC card for one meter and energy quantify is tranitted through the encrted card
■Adopting FeRAM (Ferroelectric random-access memories) to ensure reliable storage
■Applying large capacity magnetic-holding electrical relay to ensure lower power consumption and high reliability
Technical Parameters
■ Rated Voltage(V) : 3×220/380
■ Operation Voltage (v) 70%Un~120%Un
■ Rated Current(A) : 3×1.5(6); 3×5(20), 3×5(30), 3×5(40),3×10(40), 3×10(60) ，3×15(60) , 3×20(80),
■ Rated Frequency(Hz): 50，
■ Accuracy: cl1, cl2
■ Power Consumption: voltage circuit:≤3W/10VA / phase current circuit: ≤1.5VA / phase
■Ambient Temperature(℃): -25~+55，Limits of temperature(℃): -45~+70
■Relative Humidity: ≤75% (annual average)
■Range of display: 0~9999kWh
■Date can be kept for more than 10 years when power off
■Size（mm）：
■ Life(year):＞10
Function
■Measuring both positive and negative active energy
■Prepaying the energy which reduces continuously
■When there is not enough remaining energy, meter will alarm. When the remaining energy reaches zero or one specified quantify, power supply is cut off to remind the user to buy energy
■Automatically cut off power supply when overloaded (to be selected)
■Able to write back data
■Able to display remaining energy and other information Scope of Use
■3×220V/380V ×1.5(6)A is for transformer operated meters suitable for big industrial unit using prepaid 50Hz(60Hz) of 3-phase 3-wire electric power which is high-voltage supplied while low-voltage measured or suitable for industrial & non-industrial unit using prepaid 50Hz(60Hz) of 3-phase 4-wire electric power which is low-voltage supplied
■3×220V/380V 3×5(20)A----3×20(80) is for direct connected meter suitable for industrial & non-industrial unit using prepaid 50Hz(60Hz) of 3-phase 4-wire electric power which is low- voltage supplied or suitable for large-energy- consuming residential energy measurement using prepaid 3-phase 4-wire electric power which is low- voltage supplied
