对放电距离及放电电压的认识.doc

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1、一球接地时球隙的工频交流、负极性直流和负极性冲击放电电压（kV最大值）球距S(cm)球径D（cm）256.251012.5152550751001502000.052.40.14.40.156.30.28.280.311.50.414.814.314.20.51816.916.716.50.62120.420.20.723.90.826.626.326.20.9291.031.23231.931.631.531.3311.2(35.1)37.637.51.4(38.5)43431.5(40)45.645.645.5451.6(41.4)48.148.41.8(44)5353.62.0(46.2

2、)57.458.259.159.259.25958582.261.563.12.465.367.42.567.269.6727272.672713.0(75.4)79.184.185.285.5863.5(82.4)(87.5)95.297.298.14.0(88.4)(94.8)1051091101121121124.5(93.5)(101)1151191225(98)(107)1231291321371371371375.5(112)(131)1381436.0(116)(138)1461521611641646.5(144)(154)1617.0(150)(162)1691847.5(1

3、55)(168)1778.0(160)(174)(185)2052142159.0(169)(186)(198)22510.0(177)(196)(209)24326226526626726511.0(204)(219)26012(212)(229)27530831313(238)(289)14(245)(302)35236015252()(314)38738838916(325)39240618(345)42845020(363)46149250350851022(378)49153224(391)52057025(396)61162663026(545)60628(570)64030(59

4、1)67070973974532(611)70234(630)7313579784685836(647)75638(663)78340(679)(806)87694796545(710)(858)9491040107550(738)(904)10101130118055(945)(1070)121060(981)(1120)1280136065(1012)(1170)135070(1040)(1210)1420153075(1060)(1240)147080(1280)(1530)168090(1330)(1630)1810100(1370)(1710)1930110(1790)(2030)1

5、20(1850)(2120)130(1900)(2200)140(1950)(2280)150(1980)(2350)160(2410)180(2500)200(2580)/注：1、表中冲击放电电压值系大气压力为101.3kPa，周围气温为20℃时的数据。2、如电压以有效值表示，应将表中数值除以根号2。3、括号内数字准确度较低。