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易賣工控網(wǎng)(news.tpt0.cn)提供”供應(yīng)模塊.MVI56-MCM水晶頭”,產(chǎn)品詳情:品牌/廠家:其他品牌、型號:MVI56-MCM、成色:全新、貨期:現(xiàn)貨 1天內(nèi)發(fā)貨、保修:365天,更多產(chǎn)品詳情就上易賣工控網(wǎng)。
10kV母聯(lián)、10kV主變進線間隔一般分別由開關(guān)柜與隔離柜組成,電流互感器裝于開關(guān)與閘刀間。在需要10kV母聯(lián)或10kV主變進線間隔停電檢修時,廠家提供了驗電接地小車,分別推入開關(guān)柜與隔離柜,在驗明確無電壓后合上接地閘刀,但驗電接地小車的防誤閉鎖邏輯各變電站間并不是都統(tǒng)一的,需要進一步完善。為控制和消除此類操作中的產(chǎn)生誤操作的危險因素,選擇一種完善的防誤閉鎖邏輯是十分有必要的。
一、在檢修操作中防誤回路危險點分析及對策
以某變電站的10kV設(shè)備均采用中置柜形式進行分析,其10kV母聯(lián)、10kV主變進線間隔為開關(guān)柜與隔離柜配置。以10kV母聯(lián)間隔為例,電流互感器裝于開關(guān)與隔離閘刀間,具體電流互感器裝設(shè)在10kV母聯(lián)開關(guān)柜后下柜內(nèi),如圖1中的U。在母聯(lián)內(nèi)的電流互感器檢修操作時,將開關(guān)小車、隔離小車分別拉至柜外,用驗電接地小車分別推入開關(guān)柜與隔離柜,在驗明確無電壓后合上接地閘刀,滿足檢修要求,如圖2中的接地線。
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