5X00481G01占位模塊,5X00481G01產(chǎn)品尺寸
主要技術(shù)指標(biāo)如下：
電壓等級：1140V/660V；頻率：50HZ；
總額定電流：800A、1200A，單臺工作電流可達到400A；
漏電閉鎖保護：附加直流檢測，1140V-40K歐、660V-22K歐；
漏電保護動作：1140V-20K歐、660V-11K歐；
短路保護：為額定電流的3-10倍；
過壓和欠壓保護：0.75Ue；
超溫保護和超限保護；
開關(guān)設(shè)備有漏電試驗和過流試驗按鈕，可隨時檢測饋電開關(guān)保護功能；
5X00481G01占位模塊系統(tǒng)原理圖
目前國內(nèi)大多數(shù)饋電開關(guān)采用西門子 變送器 漏電保護器控制的方案，盡管該方案能達到系統(tǒng)要求，但是在控制功能上有很大局限性。采用此方案替代上述方案后可以對整個饋電開關(guān)的工藝參數(shù)如電流、電壓等參數(shù)進行在線檢測。降低了客戶的成本，保證了工藝條件的穩(wěn)定、提高了產(chǎn)品的響應(yīng)速度。采用文本顯示屏，利用顯示屏反應(yīng)出來的報警信息，工作人員很容易排除故障。提高了生產(chǎn)效率。
6、系統(tǒng)亮點
該系統(tǒng)所采用的三相交流電及漏電監(jiān)測模塊UN 231-0BH22-0XA0是一大亮點，該模塊通過交流互感器能夠?qū)崿F(xiàn)對交流電信息的采集，配合CPU的運算和控制，可以實現(xiàn)過壓、欠壓、過載、短路、漏電、三相不平衡保護等功能；能夠?qū)﹄娋W(wǎng)絕緣電阻進行監(jiān)測；具有零序電壓和零序電流采集功能。該產(chǎn)品是UN200PLC的一個擴展模塊系統(tǒng)中主要的控制核心為我公司已經(jīng)取得煤安防爆資格的煤礦用帶式輸送機保護控制箱，12條皮帶每臺皮帶用1臺控制箱控制，共12臺控制箱，每個控制箱均能實現(xiàn)急停保護、超溫保護、欠速打滑保護、煙霧保護、跑偏保護、堆煤保護、張緊力保護功能，可實現(xiàn)就地操作以及遠程控制。同時整條皮帶運輸線可實現(xiàn)逆煤流啟動，順煤流停止功能，當(dāng)去煤方向的皮帶出現(xiàn)保護停機時可實現(xiàn)來煤方向的所有皮帶閉鎖停機，有效防止了堆煤現(xiàn)象發(fā)生，提高了生產(chǎn)效率。本項目中為了實現(xiàn)12個控制箱的S7-1200CPU的閉鎖通信及數(shù)據(jù)交換，還選用了1臺S7-300系列的CPU 315-2PN/DP作為數(shù)據(jù)服務(wù)器，通過井下環(huán)形以太網(wǎng)與12臺S7-1200組成控制網(wǎng)絡(luò)；S7-300的PUT/GET指令為S7通信，組態(tài)為主動連接，通信指令將每臺S7-1200 CPU的數(shù)據(jù)進行處理分配
Networked secondary equipment: the conventional secondary equipment in the substation, such as relay protection device, measurement control device, error proof locking device, telecontrol device, fault recording device, voltage and reactive power control, synchronous operation device and developing online state detection device, are all designed and manufactured based on standardized and modular microprocessor, and the connection between equipment adopts high-speed network communication, The secondary equipment will no longer have the repeated I / O field interface of functional devices, and truly realize data sharing and resource sharing through the network. The conventional functional devices have become logical functional modules.
(3) Automatic operation management system: the substation operation management automation system shall include power production and operation data, status record statistics, paperless and automation; In case of fault in substation operation, it can provide fault analysis report in time, and point out the fault causes and treatment suggestions; The system can automatically send the substation equipment maintenance report, that is, the conventional substation equipment "regular maintenance" is changed to "condition based maintenance". Requirements of digital substation for industrial
