GBT2900.20-1994-电工术语高压开关设备.pdf

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1、UDC621066-621.3-027-7/8K04中华人民共和国国家标准GB/'r2900.20一94电工术语高压开关设备ElectrotechnicalterminologyHigh-voltageswitchgear1994一04一12发布1994一12一01实施国家技术监督局发布目次1主题内容与适用范围·····”······，······”··············“····“·····················“·····⋯⋯(1)2通用术语·····················

2、········································，.······························⋯⋯(1)3高压开关设备术语······························”·”·”······················”···········⋯⋯(3)4开关部件术语················································································⋯⋯(6)5操

3、作术语········································，.······························“·”············⋯⋯(9)6特性参量术语·············································”····························”·······⋯⋯(11)7试验及试验设备术语·········。······”·····································

4、···················⋯⋯(19)中文索引··············“·······················”···················”·”·················”·⋯(21)英文索引··············································································”······⋯⋯(25)中华人民共和国国家标准电工术语高压开关设备GB/T2900.20一94Electrotec

5、hnicalterminologyHigh-voltageswitchgear本标准参照采用国际电工委员会(IEC)50出版物《国际电工词汇》(IEV)第441章《开关设备、控制设备和熔断器)(1984年版),56出版物《高压交流断路器》(1987年版),129出版物《交流隔离开关和接地开关》(1984年版),265-1及265-2出版物《高压负荷开关》(1988年版),298出版物《交流金属封闭开关设备和控制设备》(199。年版)及517出版物《额定电压72.5kV及以上气体绝缘金属封闭开关设备》(1

6、986年版)等国际标准。主题内容与适用范围本标准规定了与高压开关设备有关的通用术语和高压开关设备、开关部件、操作、特性参量、试验及试验设备等电工术语的定义。本标准适用于高压断路器、重合器、分段器、负荷开关、隔离开关、接地开关、接触器、起动器、组合电器、金属封闭开关设备(高压开关柜)等高压开关设备(未包括熔断器，它另有自身的术语标准)制定、修订标准，编写和翻译技术资料、专业手册和书刊等引用。通用术语2.1电弧长度arclength电弧中心线的长度。电弧电压arcvoltage电弧两端间的电压降。弧后电流p

7、ost-arccurrent电弧电流过零后，在瞬态恢复电压作用期间流经高压开关弧隙的电流。(参照GB4473-84的1.7条).畸变电流distortioncurrent预期电流与电弧电流(即受电弧电压影响之后流经弧隙的实际电流)的数值和(或)波形之差。电流截断(截流)currentchopping电流在自然零点前突然降至零的现象。电流零点currentzero电流波上电流值为零的点。2.7(电弧)电流零区(arc)current-zeroperiod电弧电流零点前后的一段时间。通常指从电弧电压开始显著

8、变化起到弧后电流过零瞬间的时间。过电流overcurrent超过额定电流的电流。(IEV441-11-06)短路电流short-circuitcurrent国家技术监督局1994一04一12批准1994一12一01实施cs/T2900.20一94在电气回路中由于故障或误联接引起短路所产生的过电流。(IEV441-11-07)2.10过载overload产生过电流或过电压的回路中的工作状态。(参照IEV441-11-08)2.11半波(电流的