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DL中华人民共和国电力行业标准DL/T404-2007代替DL/T404-19973.6kV～40.5kV交流金属封闭开关设备和控制设备Alternating-Currentmetal-enclosedSwitchgearandcontrolgearforratedvoltagesabove3.6kVanduptoandincluding40.5kV（IEC62271-200:2003Alternating-Currentmetal-enclosedswitchgearandcontrolgearforratedvoltagesabove1kVanduptoandincluding52kV,MOD）2007－12－11发布2008－06－01实施中华人民共和国国家发展和改革委员会发布目次前言..............................................................................V1概述...............................................................................11.1范围..........................................................................11.2规范性引用文件................................................................12正常和特殊使用条件.................................................................23术语和定义.........................................................................23.101开关设备和控制设备switchgearandcontrolgear...............................23.102金属封闭开关设备和控制设备metal-enclosedswitchgearandcontrolgear........23.103功能单元（总装的）functionalunit(ofanassembly)..........................23.104多层multi-tier.............................................................23.105运输单元transportunit.....................................................23.106外壳enclosure..............................................................23.107隔室compartment............................................................23.108隔板partition..............................................................33.109隔板的等级partitionclass..................................................33.110活门shutter................................................................33.111分隔（导体的）segreation(ofconductors)....................................33.112套管bushing................................................................33.113元件component..............................................................33.114主回路（总装的）maincircuit(ofanassembly)...............................43.115接地回路earthingcircuit...................................................43.116辅助回路auxiliarycircuit..................................................43.117压力释放装置pressurereliefdevice.........................................43.118充流体隔室fluid-filledcompartment.........................................43.119相对压力relativepressure..................................................43.120昀低功能水平（充流体隔室的）minimumfunctionallevel(offluid-filledcompartments)..................................................................................43.121设计水平（充流体隔室的）designlevel(offluid-filledcompartments).........43.122设计温度（充流体隔室的）designtemperature(offluid-filledcompartments)...43.123周围空气温度（金属封闭开关设备和控制设备的）ambientairtemperature(ofmetal-enclosedswitchgearandcontrolgear).........................................43.124可移开部件removablepart...................................................53.125可抽出部件withdrawablepart................................................53.126工作位置（接通位置）serviceposition(connectedposition)...................53.127接地位置earthingposition..................................................53.128试验位置（可抽出部件的）testposition(ofawithdrawablepart)..............53.129隔离位置（可抽出部件的）disconnectedposition(ofawithdrawablepart)......53.130移开位置（可移开部件的）removedposition(ofaremovablepart)..............53.131丧失运行连续性类别（LSC）lossofservicecontinuitycategory(LSC)..........53.132内部电弧级开关设备和控制设备（IAC）internalarcclassifiedswitchgearand·I·(IAC)..................................................................53.133防护等级degreeofprotection...............................................63.134额定值ratedvalue..........................................................63.135破坏性放电disruptivedischarge.............................................64额定值.............................................................................64.1额定电压（Ur）................................................................64.2额定绝缘水平..................................................................64.3额定频率（fr）................................................................64.4额定电流和温升................................................................64.5额定短时耐受电流（Ik）........................................................74.6额定峰值耐受电流（IP）........................................................74.7额定短路持续时间（tk）........................................................74.8合闸和分闸装置及其辅助和控制回路的额定电源电压（Ua）..........................74.9合闸和分闸装置及其辅助回路的额定电源频率......................................74.10可控压力系统压缩气源的额定压力...............................................74.11绝缘和/或操作用气体或液体的额定充入水平......................................75设计和结构.........................................................................75.1对开关设备和控制设备中液体的要求..............................................85.2对开关设备和控制设备中气体的要求..............................................85.3接地..........................................................................85.4辅助设备和控制设备............................................................95.5动力操作...............................