1.概述General
ACR 系列三相智能電力監(jiān)控儀表，是針對電力系統(tǒng)、工礦企業(yè)、公用設施、智能大廈的電力監(jiān)控需求而設計的智能表，它集成電力參數(shù)的測量(如單相或者三相的電流、電壓、有功功率、無功功率、視在功率、頻率、功率因數(shù)) 以及電能監(jiān)測和考核管理。復費率電能一天最多可分成8個時段、4種費率來完成電能的分時監(jiān)測。
同時它具有多種外圍接口功能可供用戶選擇：帶有 RS485 通訊接口，采用 MODBUS-RTU 協(xié)議可滿足通訊聯(lián)網(wǎng)管理的需要；4-20mA 的模擬量輸出可與任意測量的電參量相對應，滿足 DCS 等接口要求； 帶開關量輸入和繼電器輸出可實現(xiàn)斷路器開關的“遙信"和“遙控"的功能，采用高亮度 LED/LCD 顯示界面，通過面板按鍵來實現(xiàn)參數(shù)設置和控制，非常適合于實時電力監(jiān)控系統(tǒng)。可以直接取代常規(guī)電力變送器及測量儀表。
作為一種先進的智能化、數(shù)字化的前端采集元件，該電力儀表已廣泛應用于各種控制系統(tǒng),SCADA 系統(tǒng)和能源管理系統(tǒng)中。
2. 技術參數(shù) Technical parameters
注1：可選功能中，DI：表示開關量輸入；DO：表示開關量輸出M：表示模擬量輸出；
接線方法見末頁(如：4DI4DO表示四路開關量輸入+ 四路開關量輸出)
注2：Profibus與RS485通訊不可同時選擇，但可與其他所有功能任意配合使用
注3：接線方法是為幾種可選功能的組合，例：訂貨型號為ACR320EFL(8DI2DO),接線方法見末頁：A4+B3+C3
注4： +2C表示：2路RS485通訊(標配1路RS`485通訊，選擇+2C表示增加1路RS485通訊)
注5：儀表型號中，ACR3XX系列(ACR320EG除外)可選擇配置中性線電流測量功能
注6：配置DI或DO功能時才有事件記錄功能
3.技術參數(shù)
3.3注意事項Notice
3.3.1電壓輸入 Voltage Input
輸入電壓應不高于產品的額定輸入電壓（100V或400V）的120%，否則應考慮使用PT；
在電壓輸入端須安裝1A保險絲；
Input voltage should not higher than 120% of product's Input voltage(100V or 400V), otherwise, should use PT;
1A fuse should be mounted on the voltage Input end；
3.3.2電流輸入Current Input
電流輸入必須使用外部CT接入。
接線時確保輸入電流與電壓相序一致，即1號線接線端接A相電壓，則5、6號接線端一定要接A相電流，否則會出現(xiàn)顯示數(shù)值和符號錯誤；同時確保電流進出線連接正確（標*號端子接進線）；
如果使用的CT上連有其它儀表，接線應采用串接方式；
安裝接線時建議使用接線排，不要直接接CT，以便于拆裝；
去除產品的電流輸入連線前，必須先切斷CT一次回路或者短接二次回路！
Current input must use external CT access
When wiring, ensure that the Input current and voltage has same phase sequence, i.e. if l# terminal is connected with A phase voltage, then 5,6# terminal must be connected with A phase current, otherwise, display value and symbol error may occur; while ensure the connection correctness of current inlet and outlet (symbol *terminal connecting with inlet);
If the used CT connected with other meters , the connection is adopting series connection mode;
When wiring,using Connector bar is recommended, not connected with CT directly, to facilitate dismounting ;
Before removing product current Input connection, firstly, cutoff CT primary circuit or short the secondary circuit!
3.3.3通訊接線Communication connection
該儀表提供異步半雙工RS485通訊接口，采用MODBUS-RTU協(xié)議，各種數(shù)據(jù)信息均可在通訊線路上傳送。理論上在一條線路上可以同時連接多達128個儀表，每個儀表均可設定其通訊地址（Addr），通訊速率（buad）也可通過設置選擇。
通訊連接建議使用三芯屏蔽線，線徑不小于0.5mm2，分別接A、B、COM2，屏蔽層接大地，COM2禁止接大地，布線時應使通訊線遠離強電電纜或其他強電場環(huán)境。
建議最末端儀表的A、B之間加匹配電阻，阻值范圍為120Ω～10kΩ。
具體接線實例見6.6所示。
This meter provides asynchronism half duplex RS485 Communication interface, adopts MODBUS-RTU protocol, various data information may be transmitting on the Communication Line .Theoretically ,on the same Line, meters up to 128 may be connected at the same time, each meter can set up its Communication address(Addr), Communication rate(buad)may be selected
Communication connection recommendation of three-core shielded wire, its linear diameter is no less than 0.5mm2.separately connecting A, B, COM2 ,the shielded layer connecting earth, COM2 is prohibited by the earth.when wiring, the Communication line shall be far away from strong current cable or other strong electric field environment.
Recommendation of adding matched resistance between A, B of the last meter, the rated resistance range is 120Ω-10kΩ.
4. 編程與使用Program and Usage
4.1測量項目及面板說明(數(shù)碼顯示)Explanation for measurement items and faceplate
儀表面板右側V123指示燈點亮時，三排數(shù)碼管分別顯示三相電壓；I123指示燈點亮時，三排數(shù)碼管分別顯示三相電流；PQλ指示燈點亮時，三排數(shù)碼管分別顯示總有功功率、總無功功率、總功率因數(shù)；面板上左邊三個燈為功率負號指示燈，當任一負號燈點亮時表明該排顯示值為負值；EPQ指示燈點亮表示顯示項目為電能，ACR網(wǎng)絡電力儀表可以監(jiān)測四象限電能數(shù)據(jù)：
On the ACR Network power meters faceplate,when its right side V123 indicator lights, three rows digitrons separately Displays three- phase voltage,I123indIcator lights, three rows digitrons separately Displays three-phase current; PQλ indicator lights, three rows digitrons separately Displays total active power, total reactive power, total power factor; but its top-left three indicators as power minus sign indicators, when any minus sign indicator lights, this shows the Displaying is negative value; EPQ indicator Lights，shows the Displaying Item is Electric energy, ACR Network power meters can measure four quadrant Electric energy data:
EPI--吸收有功電能capture active Electric energy
EPE--釋放有功電能release active Electric energy
EQL--感性無功電能Inductive reactive Electric energy
EQC--容性無功電能capacitive reactive Electric energy
右側k、M代表所顯示項目的單位數(shù)量級為千或兆。
Right side k、M: k=kilo; M= million
例：如下圖所示，“EPQ”指示燈亮，一排數(shù)碼管顯示EPI，表示當前顯示吸收有功電能，k指示燈亮，表示電能單位為kWh，讀電能時將第二排數(shù)碼管和第三排數(shù)碼管連讀，如下圖所示電能為123456.78kWh。
Example: As below figure shows: EPQ indicator lights, the first row digitrons Display EPI, currently Display the capture active Electric energy, K indicator "(Lights, shows Electric energy Unit is kWh, the Electric energy reading value is the second row digitrons plus the third row digitrons, the Electric energy shown in below figure is 123456.78kWh.
注：
1、通常情況下，用戶都是用電狀態(tài)，此時應讀取EPI值（吸收有功電能）；發(fā)電廠向外發(fā)電時讀取EPE值（釋放有功電能）。如果用戶既有用電情況、又有發(fā)電機向外發(fā)電情況，則儀表EPI和EPE里都會有電能顯示。
2、ACR儀表顯示電能值時，無特殊說明普通型指示的電能數(shù)據(jù)為一次側電能，此值無須再乘以電流、電壓變比。液晶復費率型指示的電能數(shù)據(jù)為二次側電能值，該值乘以電流、電壓變比才是一次側電能值。
3、當用戶發(fā)現(xiàn)電能或功率指示明顯不正常時，可通過查看三個分相功率確認有無接線錯誤。切換到PQλ指示燈亮（不帶PQλ頁面的可在頁面按回車鍵查看分相功率，規(guī)格不同略有差異），三行分別顯示總有功功率、總無功功率、三相功率因數(shù)時，按回車鍵，此時三行分別顯示PA、PB、PC三個分相有功功率，若用電狀態(tài)時存在任一分相功率為負（負號指示燈亮）均屬不正常。檢查該相電流電壓接線，觀察是否存在CT進出線反，或電壓與電流相序不對應等情況。若用戶采用3相3線接線方式（2CT接法），只顯示兩個分相功率，不能使用上述方法判斷，建議客戶咨詢我司技術支持人員。
4、各型號產品對應的前面板會有所不同，圖示面板僅供舉例參考。
Note:1.In a general way, users is in electricity utilization, at this time, read EPI value (capture active Electric energy); if power plant output of its power, read EPE value (release active Electric energy) .If users use power and generate power for other, then Electric energy display appear in meters of EPI and EPE。
2. When ACR meters display Electric energy value, LED (digitron) indicated Electric energy data is the primary side Electric energy, this value need not be multiplied by current, voltage transformation ratio. But LCD (liquid crystal) indicated Electric energy data is the secondary side Electric energy value, This value need be multiplied by current, voltage transformation ratio to display primary side Electric energy value.
3. When user discover that the display of Electric energy or power is abnormal clearly, may check three phase splitting power value and symbols for error wiring. Switch to PQ A 'indicator lights, three - row digitrons display total active power, total reactive power, three-phase power factor, pressing ENTER button, for long time, at this time, three - row digitrons separately display PA. PB. PC three splitting phase active power, if use power but any phase splitting power is negative(minus sign indicator lights).it is abnormal. Check This phase current, voltage connection, to see if CT inlet and outlet is reversal, or voltage and current with improper phase sequence If the user adopts the three- phase-three-wire connection mode (2CT connection), pressing ENTER button for long time, to Display two phase splitting power, the above judge method is not proper, please consult our technical support personnel.
4. Corresponding to the front panel of each type of product will be different,graphic panel can only be for reference.
5. 該三相智能電力監(jiān)控儀表產品接線方法Wiring method
（注：如與儀表殼體上接線圖不一致，以儀表殼體上接線圖為準）
(Note：if it is different from the Wiring diagram on the meters cabinet, follows the Wiring diagram on the meters cabinet)
根據(jù)不同的設計要求，推薦在電源、電壓輸入端子增加保險絲以滿足相關電氣規(guī)范的安全性要求。
According to varied design requirements, power and voltage input terminals are recommended with fuse to meet with the safety performance requirements of prevailing electric codes.
