1、高压开关柜的维护高压开关柜的维护 1、高压开关柜是一种组合式电器，它可以集断路器、负荷开关、接触器、隔离开关、熔断器、互感器、避雷器、电容器、母线以及相应的测量装置、信号装置、连锁装置和通信系统等电气设备于一个长方柜的金属外壳内。高压开关柜主要劣化因素由于各种缘由，运行中的高压开关柜会随着时间的推移发生劣化，并且时时影响着电网的安全。主要劣化因素有：1热劣化。由于设备运行中的温度升高导致绝缘性能下降。2电劣化。绝缘材料的电场集中处会导致绝缘性能下降。3机械劣化。机械应力导致的零件损坏、变形、龟裂和磨损等。4环境劣化。由环境因素引起的污损、腐蚀、吸湿和润滑油变质劣化等。运行维护留意事项由于开关柜
2、 2、是一种应用范围广泛的电力设备，并且单因素劣化较少，多是综合因素劣化，是事故的多发区。因此，运行人员应重点留意四点：1配电间应防潮、防尘、防止小动物钻入。2全部金属部件应防锈蚀涂上清漆或色漆，运动部件应留意润滑，检查螺钉有否松动，积灰需准时去除。3留意观看各元件的状态，检查是否有过热变色、异样响声、接触不良等现象。4开关柜长期未投入运行时，投运前主要一次元件间隔如手车室及电缆室应进行加热除湿，以防止产生凝露而影响设备的外绝缘。【链接】常用高压开关柜的类型通用型高压开关柜内的主要电气设备是高压断路器，依据断路器的安装方式分为：1固定式。高压断路器安 3、装在开关柜的固定架构上，结构简洁价格廉
3、价，因没有隔离触头，不简单出现接触不良引起的温度过高，甚至造成相间或对地击穿等严重事故；但是，存在柜体高度和宽度偏大、检修断路器困难以及检修时间长等缺点。2移开式。高压断路器安装在开关柜内可移开的小车上以便修理，称为移开式或小车式；这种柜型的各功能小室互相隔开，正常操作性能和防误操作功能比较完善和合理，检修方便，而且可以靠墙或背靠背安装，节约空间。内部资料仅供参考*Jg6a*CZ7H$dq8KfHVZFedswemailprotected$R#849Gx emailprotectedemailprotectedemailprotectedemailprotectedemailprotected
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