一、      概述General火炬电器有限公司是国内最早生产油纸变压器套管的厂家之一，历史悠久，有丰富的油纸绝缘产品生产经验，产品遍布国内各地，也远销海外。Torch Electrical Apparatus Co., Ltd is the latest one of manufactures of oil-paper transformer bushing in China, which has long history, and with a wealth of production experiences, its products not only cover China, but also export to foreign countries.套管实现了计算机辅助设计。这样就摆脱了设计过程中的繁杂计算，极大提高了设计的工作效率、数据计算的准确性。Computer Auxiliary Design has been achieved for bushing. Complex calculation in the design has been shaken off, working efficiency and accuracy of calculation have been improved.开展了套管尾部电场分布的优化设计，其数据为尾部结构提供了重要的设计依据。Optimization design of distribution in electric field of bottom of bushing has been done, its data offer the basis of design for structure of its bottom.现在，火炬电器有限公司生产的套管，无论是机械性能，还是电气性能均跻身于国内先进水平。Today, either mechnical performance or electric performance, bushing manufactered by our company rise to the advanced level of the world. 二、产品结构特点characteristic of structure与传统套管相比，现时生产的套管具有以下特点：Compared with traditional bushing, present bushing has the following characteristic:第一、油枕、法兰均采用铸铝合金，非磁性材料的采用改善套管的绝缘热稳定性能十分有利，这一点，对330KV及以上超高压套管尤其重要。Aluminium alloy shall be used for oil pillow and flange, non-magnetic material is good for improving insulation thermal reliability performance of bushing,  on which it is important for super-high voltage bushing.第二、为了方便变压器安装，在法兰盘侧边增设了排气孔。Dispeling gas hole shall be additional provided on the side of flange for assemblying transformenr’ convenience.第三、油位指示清楚醒目，均采用大圆形玻璃油表。Indication of oil indicator is clear and conspicuous, magnetic-pin type oil indicator shall be used for 220kV bushing or greater.                              第四、精心设计了密封结构，测量端子也是全密封的。Sealed structure shall be painstakingly designed, measured terminal is with full sealed structure.第五、电容芯子——及主绝缘采用了新的设计方法，这种方法可以提高芯子绝缘曾中部的绝缘利用系数，改善工艺性能。使径向场调节得更均匀，有效地提高了套管的局部放电起始电压和滑闪放电起始电压。经国内权威部门检测，本公司的126KV短尾套管（工厂代号：3533W4,尾部瓷套仅长340mm），一分钟工频耐受电压通过了300KV,126kv电压下，局部放电量仅2pC。New method of design shall be used for capacitance core and main insulation, the method can improve insulation usage coefficient in the middle of core, workmanship performance is improved. Adjustment of four-direction electric field is more even, partial discharge voltage and flashover discharge voltage are effectively improved. Upon inspected by domestic authorized department, 1min power frequency withstand voltage of 126kV short-tail bushing (factory type: 3533W4) has passed 300kV, 126kV, partial dicharge is only 2pC.采用上述措施后，火炬公司套管具有:   体积小、质量轻、机械强度高、密封可靠、绝缘性能更可靠。Upon taken the above measures, bushing of my company has small volume, light mass, high mechanical strength, reliable seal, and more reliable insulation performance. 三、型号说明：Illustration of type产品型号说明Illustration of type of products             产品型号BR油纸电容式变压器套管结构特征D表示短尾，长尾不表示；L可装设电流互感器，不装不表示外绝缘结构W外绝缘为耐污型，普通型不表示额定电压额定电流315~3150A安装环境及方式TH表示适用于湿热带Z穿墙套管垂直安装，卧式不表示附加特征代号  2公称爬电比距为20mm/ kV                  3公称爬电比距为25mm/ kV                  4公称爬电比距为31mm/ kV  a      b     c          e       f     g     h四、产品主要执行标准：Main standard of product1.GB/T 4109-2008《交流电压高于1000V的绝缘套管》GB/T 4109-2008《Insulated bushings for alternating voltanges above 1000V》2.GB/13026-2008《交流电容式套管型式与尺寸》GB/13026-2008《Types and dimensions of a.c.capacitance graded bushings》注：GB/T4109-1999 eqv IEC 60137：1995五、主要尺寸表：Table of main dimension1、550kv油纸电容式变压器套管见表1 550kV oil-paper capacitance transformer bushing is shown in Table 12、72.5kv油纸电容式变压器套管见表272.5kV oil-paper capacitance transformer bushing is shown in Table 23、126-145kv油纸电容式变压器套管见表3126-145kV oil-paper capacitance transformer bushing is shown in Table 34、252kv油纸电容式变压器套管见表4252kV oil-paper capacitance transformer bushing is shown in Table 4油纸电容式变压器套管OIL IMPERGNATED PAPER CAPACITANCE TYPE TRANSFOMER BUSHING     油纸电容式变压器套管电气性能表设备最高电压(Um)kVhighest voltage for equipment72.5126145252363550工频耐受电压（有效值）power frequencywithstand voltage kV155205/255255/305435/505625750/870雷电冲击干耐受电压（峰值）lighting impulse dry withstand voltage（peak value）全波325450/550550/650950/105011751675/1800截波360495/605605/7151045/115512951845/1980操作冲击耐受电压（峰值）   750/8509501175/1300介质耗损因素（不大于）Dielectric loss not exceed增值1.05Um√3-Um时0.001最大值1.05Um√3时0.007额定电压下局部放电量（不大于）Partail discharge PC not exceedUm下   10pC1.05Um下  5pC抗弯实验负荷（kN）Cantilever withstand load KnIr:≤800A11.251.251.252.52.5Ir:1000-1600A1.251.61.61.62.52.5Ir:2000-2500A22.52.52.53.153.15Ir:≥3150A444455          注：1.Ir：额定电流有效值。Effective value of rated current2.分两档的电压值由供需双方协定。Voltage value by two grades is negotiated for both seller and buyer.