高压开关柜是高低压成套设备中不可缺少的一部分，在电力系统中起着重要的作用，那么，在日常使用时我们高低压 电气成套设备需要做哪些维护工作呢？

High voltage switchgear is an indispensable part of high-voltage and low-voltage complete sets of equipment, which plays an important role in the power system. Then, what maintenance work should we do for high-voltage and low-voltage electrical complete sets of equipment in daily use?

(一)检查、清扫开关柜，柜体清洁无灰尘。柜面观察窗清洁透明。

（1） Check and clean the switch cabinet. The cabinet is clean without dust. The observation window on the cabinet is clean and transparent.

(二)高低压成套设备柜面元件安装端正，接线牢固，电度表、高压带电指示装置、继电器及信号灯工作正常，符合相关规定。检查开关位置指示信号灯指示正确。

（2） The cabinet components of high and low voltage complete sets of equipment are installed correctly, the wiring is firm, the watt hour meter, high voltage live indicator, relay and signal lamp work normally, and meet the relevant regulations. Check that the switch position indicator is correct.

(三)检查开关柜密封良好，门锁齐全，机械和电气带电闭锁装置作用可靠，在有电情况下不能打开柜门。手车位置检测行程开关作用良好，能正确反映手车位置。开关机械位置闭锁装置作用良好。高低压电气成套设备检查二次回路连接牢固，接线正确。

（3） Check that the switch cabinet is well sealed, the door locks are complete, the mechanical and electrical live locking devices are reliable, and the cabinet door cannot be opened when there is electricity. The function of the travel switch for handcart position detection is good, which can correctly reflect the position of handcart. The mechanical position locking device works well. Check whether the secondary circuit of high and low voltage electrical equipment is firmly connected and the wiring is correct.

(四)拉出手车，高低压电气成套设备检查开关柜后部带电防护档板作用良好，开关手车拉出后能自动复位。

（4） Pull out the handcart, check the high and low voltage electrical equipment, and check that the electrified protection baffle at the back of the switch cabinet works well, and the switch handcart can reset automatically after pulling out.

(五)检查高低压成套设备柜体接地良好，手车接地轨道接触良好，表面无锈蚀现象。手车推拉应轻松灵活，到位后能自动闭锁定位，无卡滞现象。

（5） Check that the cabinet of high and low voltage complete equipment is well grounded, the grounding rail of handcart is in good contact, and the surface is free of corrosion. The push and pull of the handcart should be easy and flexible, and it can automatically lock and locate when it is in place without jamming.

(六)电流互感器及过电压吸收装置。用抹布擦拭互感器及过电压吸收装置表面，高低压电气成套设备检查一次接线紧固情况。检查互感器二次端子和铁芯接地良好。

（6） Current transformer and overvoltage absorption device. Wipe the surface of transformer and over-voltage absorption device with cloth, and check the fastening of primary wiring of high and low voltage electrical equipment. Check whether the secondary terminal and iron core of the transformer are well grounded.