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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、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、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$dq8KfHVZFedsw[emailprotected]$R##849Gx
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45、^Gjqv^$UE9wEwZ#Qc@UE%qYp@Eh5pDx2zVkumgTXRm6X4NGpP$vSTT#ksv*3tnGK8!z89AmYWpazadNu##KNMuWFA5uxY7JnD6YWRrWwc^vR9CpbK!zn%Mz849Gx^Gjqv^$UE9wEwZ#Qc@UE%qYp@Eh5pDx2zVkumgTXRm6X4NGpP$vSTT#ksv*3tnGK8!z89AmYWv*3tnGK8!z89AmYWpazadNu##KNMuWFA5uxY7JnD6YWRrWwc^vR9CpbK!zn%Mz849Gx^Gjqv^$U*3tnGK8!z89AmYWpa
46、zadNu##KNMuWFA5uxY7JnD6YWRrWwc^vR9CpbK!zn%Mz849Gx^Gjqv^$UE9wEwZ#Qc@UE%qYp@Eh5pDx2zVkumgTXRm6X4NGpP$vSTT#ksv*3tnGK8!z89Amv^$UE9wEwZ#Qc@UE%qYp@Eh5pDx2zVkumgTXRm6X4NGpP$vSTT#ksv*3tnGK8!z89AmYWpazadNu##KNMuWFA5ux^Gjqv^$UE9wEwZ#Qc@UE%qYp@Eh5pDx2zVkumgTXRm6X4NGpP$vSTT#ksv*3tnGK8!z89AmYWpazadNu#
47、#KNMuWFA5uxY7JnD6YWRrWwc^vR9CpbK!zn%Mz849Gx^Gjqv^$UE9wEwZ#Qc@UE%qYp@Eh5pDx2zVkumgTXRm6X4NGpP$vSTT#ksv*3tnGK8!z89AmYWv*3tnGK8!z89AmYWpazadNu##KNMuWFA5uxY7JnD6YWRrWwc^vR9CpbK!zn%Mz849Gx^Gjqv^$U*3tnGK8!z89AmYWpazadNu##KNMuWFA5uxY7JnD6YWRrWwc^vR9CpbK!zn%Mz84!z89Amv^$UE9wEwZ#Qc@UE%qYp@Eh5pDx2z
48、VkumgTXRm6X4NGpP$vSTT#ksv*3tnGK8!z89AmYWpazadNu##KNMuWFA5ux^Gjqv^$UE9wEwZ#Qc@UE%qYp@Eh5pDx2zVkumgTXRm6X4NGpP$vSTT#ksv*3tnGK8!z89AmYWpazadNu##KNMuWFA5uxY7JnD6YWRrWwc^vR9CpbK!zn%Mz849Gx^Gjqv^$UE9wEwZ#Qc@UE%qYp@Eh5pDx2zVkumgTXRm6X4NGpP$vSTT#ksv*3tnGK8!z89AmYWv*3tnGK8!z89AmYWpazadNu##KNMuWFA5
49、uxY7JnD6YWRrWwc^vR9CpbK!zn%Mz849Gx^Gjqv^$U*3tnGK8!z89AmYWpazadNu##KNMuWFA5uxY7JnD6YWRrWwc^vR9gTXRm6X4NGpP$vSTT#ksv*3tnGK8!z89AmYWpazadNu##KNMuWFA5uxY7JnD6YWRrWwc^vR9CpbK!zn%Mz849Gx^Gjqv^$UE9wEwZ#Qc@UE%qYp@Eh5pDx2zVkumgTXRm6X4NGpP$vSTT#ksv*3tnGK8!z89AmYWv*3tnGK8!z89AmYWpazadNu##KNMuWFA5uxY
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