變壓器檢驗要點

1、1.監(jiān)造關鍵內容監(jiān)造關鍵內容1.1.原材料原材料1.1.1.鐵芯硅鋼片材料牌號、產(chǎn)地、廠商與訂貨技術協(xié)議、標準及圖紙要求必須一致。1.1.2.線圈材料的牌號和規(guī)格與訂貨技術協(xié)議及圖紙要求必須一致。1.1.3.外觀檢查。1.2.尺寸及總裝檢查尺寸及總裝檢查1.2.1.鐵芯的制作中要注意硅鋼片的沖片質量和疊片質量，主要是沖片幾何尺寸差、毛刺、疊片后的總厚度偏差及疊片系數(shù)。1.2.2.線圈饒制中應經(jīng)常在饒制現(xiàn)場進行巡檢，及時注意饒制操作中有沒

2、有違反工藝的現(xiàn)象，加強工藝控制。1.2.3.油箱和油柜必須經(jīng)過50KPa密封試驗和滲漏試驗，時間24小時。1.2.4.變壓器組裝期間，要全面檢查器身的清潔度；引線對各部位的絕緣距離；器身真空干燥和真空注油；絕緣體清潔程度和形狀；絕緣層厚度等等。1.2.5.監(jiān)控儀表安裝質量檢查。1.3.外購件外購件1.3.1.檢查監(jiān)控儀表：有載調壓開關、油位指示器、油溫測量裝置、氣體繼電器等是否符合技術協(xié)議。1.3.2.檢查其他外購件：散熱器、風機、壓力

3、釋放閥等是否符合技術協(xié)議。1.3.3.外購件主要檢查內容：合格證、核對產(chǎn)品型號和規(guī)格、實物的宏觀檢查。1.4.整機試驗整機試驗1.4.1.確認廠方提供的試驗大綱和試驗裝置。1.4.2.電器試驗：1.4.2.1.直流電阻不平衡相(或線)；3.1.5.GBT64511999《三相油浸式電力變壓器技術參數(shù)和要求》1.SCOPE1.1.Thisdocumentshallbeusedsolelyasaguidefinspectionsupplie

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5、specifications.2.PURCHASEDERREVIEWPREINSPECTIONMEETING2.1.PritothestartoffabricationifspecifiedintheInspectionAssignmentLettertheinspectionrequirementfmtheinspectshallarrangeapreinspectionmeetingatthesupplier’sshop.Thein

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8、otbelimitedtothefollowingitems:2.2.1.Purchasederpurchasederrequisition2.2.2.Engineeringspecificationsstards.2.2.2.1.Note:Reptallexceptionsclarificationstakenbythesupplier.2.2.3.ReviewallsubcontractdersrequestUNpricedcopi