TCEC2022019油浸式电力变压器用皱纹绝缘纸选用导则

ICS29.180K41备案号：53939-2016准T/CEC202—2019油浸式电力变压器用皱纹绝缘纸选用导则Guideforselectionofcorrugatedinsulatingpaperforoil-immersedtypepowertransformers2019-04-24发布2019-07-01实施中国电力企业联合会发布成品：210*297版心：166*238字数：45字*43行天35地24订24切20描图：1张T/CEC202—2019I目次前言···································································································································································II1范围······························································································································································12规范性引用文件··········································································································································13术语和定义··················································································································································14常用型号与规格··········································································································································15技术要求······················································································································································26试验方法······················································································································································37进货检验······················································································································································48标志、包装、运输、贮存···························································································································59订货须知······················································································································································5T/CEC202—2019II前言本标准按照GB/T1.1—2009《标准化工作导则第1部分：标准化的结构和编写》给出的规则编写。本标准由中国电力企业联合会提出。本标准由电力行业电力变压器标准化技术委员会（DL/TC02）归口。本标准起草单位：特变电工股份有限公司、中国电力科学研究院有限公司、特变电工衡阳变压器有限公司、南方电网科学研究院有限责任公司、广东电网公司电力科学研究院、广州电力公司电力科学研究院、保定天威保变电气股份有限公司、西安西电变压器有限责任公司、西门子变压器（武汉）有限公司、特变电工沈阳变压器集团有限公司、特变电工新疆变压器厂、山东电力设备有限公司、玖龙浆纸（乐山）有限公司、济南金三鑫电力有限公司、山东泰开变压器有限公司。本标准主要起草人：贾贺强、李文刚、崔厚洋、蔡胜伟、张淑珍、张永新、袁耀、张丽、黄青丹、陈程、马志钦、李洪秀、张良县、钟孝泰、方海彬、孙建新、杜迎辉、陈燕玲、曾修寨、胡金祥、宋飞、李乃军。本标准为首次发布。本标准在执行过程中的意见或建议反馈至中国电力企业联合会标准化管理中心（北京市白广路二条一号，100761）。T/CEC202—20191油浸式电力变压器用皱纹绝缘纸选用导则1范围本标准规定了油浸式电力变压器、电抗器、互感器（以下简称变压器类）用皱纹绝缘纸（以下简称皱纹纸）的常用型号与规格、技术要求、试验方法及进货检验、标志、包装、运输、贮存、订货须知。本标准适用于变压器类产品用皱纹纸的选用。本标准不适用于配电变压器主绝缘角环。2规范性引用文件下列文件对于本文件的应用是必不可少的。凡是注日期的引用文件，仅注日期的版本适用于本文件。凡是不注日期的引用文件，其最新版本（包括所有的修改单）适用于本文件。GB/T451.2纸和纸板定量的测定GB/T451.3纸和纸板厚度的测定GB/T462纸、纸板和纸浆分析试样水分的测定GB/T742造纸原料、纸浆、纸和纸板灼烧残余物（灰分）的规定（575℃和900℃）GB/T743纸浆乙醚抽出物的测定GB/T1545纸、纸板和纸浆水抽提液酸度或碱度的测定GB/T2828.1计数抽样检验程序第1部分：按接收质量限（AQL）检索的逐批检验抽样计划GB/T3333电缆纸工频击穿电压试验方法GB/T7977纸、纸板和纸浆水抽提液电导率测定GB/T10342纸张的包装和标志GB/T12914纸和纸板抗张强度的测定恒速拉伸法（20mm/min）JB/T10441.2电工用皱纹绝缘纸第2部分：试验方法3术语和定义下列术语和定义适用于本文件。3.1皱纹数crepenumber纵向长度为10mm皱纹纸的起皱个数，单位为个/cm。3.2裂断时伸长率stretchatbreak在标准试验方法规定的条件下，试样断裂时的伸长长度与原始长度的比率，以百分数表示。4常用型号与规格4.1型号表示方法T/CEC202—201924.2常用型号、规格及标记应符合表1的规定。表1常用型号、规格及标记规格型号基纸厚度mm宽度mm标记示例JW-50/500.0525、4025皱纹纸JW-50/50JW-50/750.0754040皱纹纸JW-50/755技术要求5.1原料皱纹纸的原料应使用100%纯硫酸盐绝缘木浆制造。5.2外观5.2.1皱纹纸皱纹应均匀，其纵向不应有褶子、皱纹。皱纹纸原纸颜色应均匀一致，纸面应平整，不应含有金属粒子、煤灰、砂粒、染料浆块等目测可见异物，不应有霉点、水迹、裂纹、孔洞等缺陷。皱纹纸切边应整齐、洁净，不应有裂口。5.2.2皱纹纸应均匀地卷绕在硬质纸芯上，但不应过紧，其两侧面应平齐，且与芯轴垂直，纸的末端用粘带粘牢，不应浸透第二层纸。纸卷芯轴长度应小于纸带宽度，纸卷周围不应有局部隆起，卷中不应有折棱或褶皱。5.3性能皱纹纸性能应符合表2的规定。表2皱纹纸性能指标值序号项目名称单位JW-50/50JW-50/75起皱前0.048～0.0540.0675～0.08251厚度起皱后mm0.35±0.050.45±0.052宽度mm25±0.2、40±0.240±0.23基纸紧度g/cm30.75～0.850.75～0.854皱纹数个/cm8～138～13纵向≥4.05≥4.585基纸抗张强度横向kN/m≥1.58≥1.96纵向≥2.0≥2.06基纸伸长率横向%≥4.0≥4.07裂断时伸长率%≥50≥508工频击穿电压（空气介质中）kV/层≥0.95≥19工频击穿电压（油介质中）kV/层≥2.4≥2.610对变压器油的污染（Δtanδ）%＜0.1＜0.1T/CEC202—20193表2（续）指标值序号项目名称单位JW-50/50JW-50/7511水抽提液电导率mS/m≤8.0≤8.012水抽提液pH值—6.0～8.06.0～8.013乙醚抽出物%≤0.3≤0.314灰分%≤0.7≤0.715水分%6.0～9.06.0～9.06试验方法6.1检测项目及要求检测项目及要求应符合表3的规定。表3检测项目及要求序号检测项目依据标准1尺寸GB/T451.32基纸紧度GB/T451.23皱纹数JB/T10441.24基纸抗张强度GB/T129145基纸伸长率GB/T129146裂断时伸长率GB/T12914空气介质中GB/T33337工频击穿电压油介质中本标准6.28对变压器油的污染本标准6.39水抽提液电导率GB/T797710水抽提液pH值GB/T154511乙醚抽出物GB/T74312灰分GB/T74213水分GB/T4626.2油介质中击穿电压测定6.2.1截取150mm×150mm尺寸试样10件，并放入105℃±2℃干燥箱中加热24h，取出后立即投入温度为20℃±5℃的变压器油中浸泡10h。6.2.2将试样放入室温变压器油中，进行击穿电压测试。电极采用黄铜制成，上电极为φ25mm，下电极为φ75mm，棱边圆角为R3，配重为1kg，升压速率宜为0.1kV/s。6.2.3当试样沿施加电压方向及位置有贯穿小孔、烧焦等痕迹，可判定为击穿。6.2.4试验应测试5件，取试验结果中值作为试验结果，任何1件试验结果偏离中值15%以上时，应测试另5件，取2组试验中值的最低值作为试验结果。T/CEC202—201946.3对变压器油的污染测定取外观符合5.2规定的皱纹纸试样10g，用镊子夹持试样边缘并置于100℃干燥箱内，恒温6h以上，然后再用镊子将试样浸入800mL标准变压器油中，使油温在105℃恒定96h（与相同牌号和体积的空白油同时进行）后，测定90℃下油的介质损耗因数。当空白油介质损耗因数与浸放试样油介质损耗因数之差Δtanδ小于0.1%时，可判定为不污染变压器油，否则应判定为污染变压器油。7进货检验7.1资料检查7.1.1订货资料检查应包含订货合同、验收标准、特殊技术条件、出厂试验报告、合格证明书、收料单等。如果是进口材料，应有国家有关法律规定的必备资料。7.1.2将订货合同、验收标准、特殊技术条件及收料单与供货商提供的磅码单、出厂试验报告及外包装标记进行核对。所提供的资料应完整、正确。7.1.3供方应提供每批次皱纹纸检测报告，并应提供第三方权威机构检测报告。7.2外观及包装检查外观检查应符合5.2的规定。包装应符合8.2的规定。7.3抽样抽样应以一次交货数量为一批，检查批单位应以盘或卷计，交货检验应按GB/T2828.1执行。抽样方案、不合格分类、检验项目、检验水平、接受质量限（AQL）按表4规定进行。表4批量抽样方案抽样方案正常检验一次抽样一般检验水平Ⅱ不合格分类A类不合格品AQL为0.25B类不合格品AQL为1.5C类不合格品AQL为4.0批量（盘、卷）样本数量AcReAcReAcReA类不合格B类不合格C类不合格≤50501011251～901301011291～15020011223151～280