·Appearance inspection: check whether there is displacement, paint dropping, corrosion, rust, deformation, discoloration, peculiar smell, etc. These may be some parts of the failure, but has not yet affected the power transmission, but the security risks already exist. Displacement or cabinet tilt are not conducive to the safe use of low-pressure drawer cabinet, to be corrected in time; paint, deformation: may be caused by mechanical external force, whether there is spring jump; corrosion, rust, discoloration is caused by chemical agents or sewage corrosion or arc, flame; odor: mostly due to high temperature, fire and other reasons, these basic problems are not obvious We must check.

·温度检查：温度是检验电力系统故障的常用方法，大多数电路故障都是短路、过压、过载等原因导致的问题，因此温度检查非常重要。

·Temperature check: temperature is a common method to check the power system fault, most of the circuit faults are caused by short circuit, overvoltage, overload and other reasons, so temperature check is very important.

·杂物检查：在对低压抽屉柜更换配件过程中是否有破损配件的残余躯体，在元器件安装过程中会残留大量的线头、零件以及铁屑等，其中部分会附着在元器件的表面或里层，因此清扫工作一定要仔细、认真，确保细节干净。

·Debris inspection: whether there are residual bodies of damaged accessories in the process of replacing accessories for low-voltage drawer cabinet, and a large number of thread ends, parts and scrap iron will be left in the process of component installation, some of which will be attached to the surface or inner layer of components, so the cleaning work must be careful and careful to ensure that the details are clean.

·机械检查：断路器、低压抽屉进出操作灵活，无卡滞现象。如果有，检查原因，适当修复。

·Mechanical inspection: the circuit breaker and low-voltage drawer are flexible in and out operation, and there is no sticking phenomenon. If so, check the cause and repair properly.

·检查润滑油：高压断路器、低压抽屉等动触头，有适量中性润滑油脂，查看是否有跑冒滴漏等现象。

·Check the lubricating oil: high voltage circuit breaker, low voltage drawer and other moving contacts, there is an appropriate amount of neutral grease, check whether there is leakage and other phenomena.

·系统参数查验：抽屉柜柜内母线制作、安装检查，母线相序正确，是否严格按照图纸规划及配电连接标准安装执行进行安装操作。这一般在初次安装后进行检查，后期不用每次巡检，在每次更换配件合闸供电之前还需要对更换的配件进行一次电路系统的安装检查。

·System parameter inspection: check the production and installation of the bus in the drawer cabinet, check whether the phase sequence of the bus is correct, and whether the installation operation is carried out in strict accordance with the drawing planning and safe power distribution connection standard. Generally, the inspection is carried out after the initial installation, and there is no need to inspect every time in the later stage. Before switching on the power supply, the replacement accessories need to be inspected once for the installation of the circuit system.