Daily inspection of low-voltage drawer cabinet is essential, and attention should be paid to fault inspection and regular inspection in individual periods. So what problems should we pay attention to when checking the low-voltage drawer cabinet? The inspection of low-voltage drawer cabinet starts from several aspects.
Appearance inspection: check whether there is displacement, paint peeling, corrosion, rust, deformation, discoloration, peculiar smell, etc. These may be failures that have not yet affected the power supply, but there are potential safety hazards. The cabinet body displacement or inclination is not conducive to the safe use of low-voltage drawer cabinet, which shall be corrected in time.
Paint peeling and deformation: it may be caused by external mechanical force, whether there is spring jumping out; Whether corrosion, rust and discoloration are caused by chemical reagent or sewage corrosion, arc or flame; Peculiar smell: it is mostly caused by high temperature and fire. These basic problems must be checked.
Temperature check: temperature is a common method to check power system faults. Most circuit faults are caused by short circuit, overvoltage, overload, etc., so temperature check is very important.
Sundries inspection: check whether there are damaged parts and residues in the process of replacing accessories in the low-voltage drawer cabinet. A large number of thread ends, parts and iron filings will remain in the process of component installation, and some will be attached to the surface or inside of the component. Therefore, the cleaning work must be careful and serious to ensure that the details are clean.
Mechanical inspection: the circuit breaker and low-voltage drawer can operate flexibly without jamming. If so, check the cause and make appropriate repairs.
Check the lubricating oil: add an appropriate amount of neutral grease to the moving contacts such as high-voltage circuit breaker and low-voltage drawer, and check whether there is oil leakage or oil leakage.
System parameter inspection: check the fabrication and installation of MNS low-voltage drawer cabinet bus, whether the phase sequence of the bus is correct, and whether the installation operation is installed in strict accordance with the drawing scheme and safety distribution connection standard This is generally checked after the initial installation, and each inspection is not required in the later stage. Before each replacement of accessories and power supply, it is necessary to check the installation of the circuit system of the replaced accessories.
During the use of low-voltage drawer cabinet, the general daily inspection workload is large, but this is based on the first safe and qualified installation. If it is the first installation, there are too many things to check. The above is the relevant content. If you need it, please visit www.tongyuhengcheng.com Consult. Com.