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高低压母线槽安装的方法:1.一般要求:(1)封闭插接母线应按设计和产品技术文件规定进行组装,组装前应对每段进行绝缘电阻的测定,测量结果应符合设计要求,并做好记录。(2)母线槽,固定距离不得大于2.5m。水平敷设距地高度不应小于2.2m。(3)母线槽的端头应装封闭罩,各段母线槽的外壳的连接应是可拆的,外壳间有跨接地线,两端应可靠接地。(4)母线与设备联接直采用软联接。母线紧固螺栓应由厂家配套供应,应用力矩扳手紧固。2.母线槽沿墙水平安装。安装高度应符合设计要求,无要求时不应距地小于2.2m,母线应可靠固定在支架上。3.母线槽悬挂吊装吊杆直径应与母线槽重量相适应,螺母应能调节。4.封闭式母线的落地安装。安装高度应按设计要求,设计无要求时应符合规范要求。立柱可采用钢管或型钢制作。5.封闭式母线垂直安装。沿墙或柱子处,应做固定支架,过楼板处应加装防震装置,并做防水台。6.封闭式母线敷设长度超过40m时,应设置伸缩节,跨越建筑物的伸缩缝或沉降缝处,宜采取适应的措施,设备定货时,应提出此项要求。7.封闭式母线插接箱安装应可靠固定,垂直安装时,安装高度应符合设计要求,设计无要求时,插接箱底口宜为1.4m。8.封闭式母线垂直安装距地1.8m以下应采取保护措施(电气专用竖井、配电室、电机室、技术层等除外)。9.封闭式母线穿越防火墙、防火楼板时,应采取防火隔离措施。注意:安装前每节摇绝缘电阻(单节大于20兆欧),安装中也要不断摇整体绝缘电阻(大于0.5兆欧),接头器的力矩螺栓要达到70牛米至80牛米,另外注重横平竖直,安装环境也要相对干燥,与可燃性气体保证规范要求等。整体安装结束在送电前要摇整体绝缘电阻(大于0.5兆欧),条件许可的情况下做整体工频耐压试验,合格后方可送电。
高低压母线槽安装的方法 首先,在支柱绝缘子上安装母线固定金具。水平敷设时母线应能在金具内自由伸缩,但在母线全长的中点或两个母线补偿器的中点应加以固定,以保证运行时母线发热后能自由伸缩。垂直敷设时,母线要用金具固定。 当母线立置时,上部压板应与母线保持1~1.5mm的间隙,水平敷设时,母线敷设后不能使绝缘子受到任何机械应力。线段中间的绝缘子固定螺栓在母线就位位置妥当后才进一步坚固。母线在支柱绝缘子的固定*点,每一段应设置一个,并在全长或两母线伸缩节的中点,母线固定装置应无棱角及毛刺,并对交流母线不形成闭合磁路。 母线敷设应按设计规定装设补偿器(伸缩节),母线补偿器的装设的目的是为了使母线热胀冷缩时有可调节的余地。母线补偿器不得有裂纹、断股和折皱现象,防止其横断面突变。母线补偿器组装后的最小截面不应小于母线截面的1.2倍。
1.检查安全防护设施、试验设备必须绝缘良好,外壳应接地或接零,连接牢固,仪器仪表、试验接线等是否完好,接地线是否正确。 2.试验区设高度不低于1.3米的安全防护遮拦,禁止非工作人员进入。在醒目地点应有“高压危险”“严禁入内”等标志牌。 3.高压试验时必须有2人以上在场,并要有专人负责,工作前要讲清工作内容、安全措施和注意事项,明确各人的分工,统一指挥试验工作的开始与结束。 4.试验区一律不准有非试验人员在内。试验时,所有人员要离开试验场防护遮栏之外才能进行。 5.高压试验时,电压应从“0”升起,不得在30﹪试验电压及以上时冲击合闸,当达到耐压试验时间后,应将电压迅速降至为“0”后再切断电源,不准在试验电压下切断电源。 6.试验中,试验人员要随时回复试验负责人的命令,并按命令*作。发现危及人身、设备、试品安全现象时,应立即断开电源并报试验负责人。 7.严禁带电检查试验线路和改变接线,试验时在未验明和确认试品、试验线路等是否带电前一律视为带电,严禁用手触摸。 8.试验结束或改变试验接线时,必须由试验负责人下令“断开电源”,并指令专人对试品进行放电验电,挂接地线后才能宣布“电源已断开”,再指令*作人或其它试验人员拆除或改接试验接线。电气产品现场试验前后均应对被试验品先行验电、放电后才能进行工作。 9.工作负责人和作业组人员共同选定接地点,高压试验线的途径,被试设备与高压试验的连接位置。 10.试验用接地线应不穿过通道,以免被人绊断,否则应设两根接地线,分别在两处接地。在试验地点设有单