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绝缘子(1)常用电压等级杆塔绝缘子串的片数绝缘子片数电压等级直线杆耐张杆110千伏78220千伏1314500千伏2527(2)线路和发电厂、变电所设备外绝缘各污秽等级和对应盐密、爬电比距。表1线路和发电厂、变电所污秽等级污秽等级污湿特征盐密(mg/cm2)线路发电厂变电所0大气清洁地区及离海岸盐场50km以上无明显污染地区≤0.03Ⅰ大气轻度污染地区,工业区和人口低密集区,离海岸盐场10km~50km地区,在污闪季节中干燥少雾(含毛毛雨)或雨量较多时>0.03~0.06≤0.06Ⅱ大气中等污染地区、轻盐碱和炉烟污秽地区,离海岸盐场3km~10km地区,在污闪季节中潮湿多雾(含毛毛雨)但雨量较少时>0.06~0.10>0.06~0.10Ⅲ大气污染较严重地区,重雾和重盐碱地区,近海岸盐场1km~3km地区,工业与人口密度较大地区,离化学污源和炉烟污秽300m~1500m的较严重污秽地区>0.10~0.25>0.10~0.25Ⅳ大气特别严重污染地区,离海岸盐场1km以内,离化学污源和炉烟污秽300m以内的地区>0.25~0.35>0.25~0.35表2各污秽等级下的爬电比距分级数值污秽等级爬电比距(cm/kV)线路发电厂、变电所220kV及以下330kV及以上220kV及以下330kV及以上01.391.45——Ⅰ1.39~1.741.45~1.821.601.60Ⅱ1.74~2.171.82~2.272.002.00Ⅲ2.17~2.782.27~2.912.502.50Ⅳ2.78~3.302.91~3.453.103.10注:线路和发电厂、变电所爬电比距计算时取系统最高工作电压。表3额定电压与系统最高工作电压额定电压(kV)1035110220500系统最高工作电压(kV)1240.5126252550(3)常用绝缘子主要数据:表1-1标准型钢化玻璃绝缘子型号和参数(自贡厂)型号FC70/127FC70/146FC100/127FC100/146FC120/127FC120/146FC160/146FC160/155最小机械破坏负荷kN70701001001201201601601小时机电负荷kN52.552.575759090120120公称直径Dmm255255255255255255280280结构高度mm127146146146127146146155泄漏距离mm320320320320320320400400钢脚代号N16A16A16A16A16A16A2020工频干耐受kV7070707070707575工频湿耐受kV4040404040404545冲击耐受kV100100100100100100110110最小击穿电压kV130130130130130130130130绝缘子净重kg3.63.73.943.9466.2表1-2标准型钢化玻璃绝缘子型号和参数(自贡厂)型号FC160/170FC210/170FC240/170FC300/195FC400/205最小机械破坏负荷kN1602102403004001小时机电负荷kN120157.5180225300公称直径Dmm280280280320360结构高度mm170170170195205泄漏距离mm400400400485550钢脚代号N2020242428工频干耐受kV7575758590工频湿耐受kV4545455055冲击耐受kV110110110130140最小击穿电压kV130130130130130绝缘子净重kg6.57.27.510.614表2-1耐污型钢化玻璃绝缘子型号和参数(自贡厂)型号FC70P/146FC100P/146FC120P/146FC7P/146FC10P/146FC12P/146FC70PL/146FC100PL/146最小机械破坏负荷kN7010012070100120701001小时机电负荷kN52.5759052.5759052.575公称直径Dmm280280280255255255320320结构高度mm146146146146146146146146泄漏距离mm450450450400400400550550钢脚代号N16A16A16A16A16A16A16A16A工频干耐受kV8585858080809090工频湿耐受kV5050504545455555冲击耐受kV125125125110110110140140最小击穿电压kV130130130130130130130130绝缘子净重kg5.85.85.84.64.64.677表2-2耐污型钢化玻璃绝缘子型号和参数(自贡厂)型号FC120PL/146FC70SPE/146FC100SPE/146FC120SPE/146FC16P/155FC16P/170FC160P/146FC160P/155最小机械破坏负荷kN120701001201601601601601小时机电负荷kN9052.57590120120120120公称直径Dmm320330330330280280330330结构高度mm146146146146155170146155泄漏距离mm550612612612450450550550钢脚代号N16A16A16A16A20202020工频干耐受kV9090909085859090工频湿耐受kV5555555550505555冲击耐受kV140140140140125125140140最小击穿电压kV130130130130130130130130绝缘子净重kg78.98.98.97.27.38.88.8表2-3耐污型钢化玻璃绝缘子型号和参数(自贡厂)型号FC160P/170FC21P/170FC210P/170FC240P/170FC300P/195FC160PH/155FC210PH/170最小机械破坏负荷kN1602102102403001602101小时机电负荷kN120157.5157.5180225120157.5公称直径Dmm330280330330380330330结构高度mm170170170170195155170泄漏距离mm550450550550690550550钢脚代号N20202024242020工频干耐受kV908590901009090工频湿耐受kV55505555604545冲击耐受kV140125140140155130130最小击穿电压kV130130130130130130130绝缘子净重kg8.97.310.210.415.388.4表3标准型钢化玻璃绝缘子型号和参数(南京厂)型号机械破坏负荷公称结构高度圆盘直径公称爬电距离钢脚直径工频湿闪电压工频击穿电压净重(kg)(kN)(mm)(mm)(mm)(mm)(kV)(kV)LXY-70LXY1-70LXY-100LXY-120LXY3-160LXY3-210LXY3-300707010012016021030014014614614615517019525525525525528028032032032032032038039048516161616202024404040404242451101101101101101201203.773.784.104.206.206.7010.7表4防污型钢化玻璃绝缘子型号和参数(南京厂)型号机械破坏负荷(kN)公称结构高度(mm)圆盘直径(mm)公称爬电距离(mm)钢脚直径(mm)工频湿闪电压(kV)工频击穿电压(kV)净重(kg)LXHY4-70LXHY3-70LXHY4-100LXHY4-120XLHY3-160LXHY5-160LXHY3-210707010012016016021014616014614615517017025525528028028032032040040045045045054054016161616202020454545455050501201201201201201201204.84.85.45.57.08.89.2表5普通型悬式瓷质绝缘子型号参数型号XP-40CXP-70XP-100XP-120XP-160XP-210XP-210XP-300圆盘外径(mm)190255255255280280280320总高度(mm)140146146146155170170195铁脚直径(mm)1616161620202424公称爬电距离(mm)200295295295360335335370机械破坏负荷(kN)4070100120160210210300工频湿闪电压(kV)3040404042424245工频击穿电压(kV)90110110110110120120120净重(kg)2.64.65.56.27.88.79.114.5表6防(耐)污型悬式瓷质绝缘子型号参数型号XP-70XP-100XP-100XP-100XP-160XP-210XP-210圆盘外径(mm)255255280255300300300总高度(mm)146160160146155170170铁脚直径(mm)16161616202024公称爬电距离(mm)400400450400450432432机械破坏负荷(kN)70100100100160210210工频湿闪电压(kV)45454545505050工频击穿电压(kV)120120120120120120120净重(kg)5.255.47.55.69.59.810.2表7-1JB/T8460-1996标准:棒形悬式复合绝缘子主要尺寸与特性序号绝缘子型号推荐序号额定电压kV额定机械拉伸负荷kN连接结构标记结构高度H.mm最小电弧距离h.mm最小公称爬电距离L.mm雷电全波冲击耐受电压kV(峰值)不小于操作冲击耐受电压kV(峰值)不小于工频一分钟湿耐受电压kV(峰值)不小于1FXB1-110/70111070161180±1510002520550—2302FXB2-110/70111070161240±1510002520550—2303FXB3-110/70111070161180±1510003150550—2304FXB4-110/70111070161240±1510003150550—2305FXB1-110/1001110100161180±1510002520550—2306FXB2-110/1001110100161240±1510002520550—2307FXB3-110/1001110100161180±1510003150550—2308FXB4-110/1001110100161240±1510003150550—2309FXB1-220/1002220100162150±30190050401000—39510FXB2-220/1002220100162240±30190050401000—39511FXB3-220/1002220100162150±3063001000—39512FXB4-220/1002220100162240±30190063001000—39513FXB1-220/1602220160202150±30190050401000—39514FXB2-220/1602220160202240±30190050401000—39515FXB3-220/1602220160202150±30190063001000—39516FXB4-220/1602220160202240±30190063001000—39517FXB1-500/1603500160204030±503600110002050124074018FXB2-500/1603500160204450±504000110002250124074019FXB3-500/1603500160204030±503600137502050124074020FXB4-500/1603500160204450±504000137502250124074021FX
本文标题:常用绝缘子技术参数
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