1. Temperature: temperature is an important means to understand the load of power supply and power supply circuit. It is very important to monitor the temperature during the maintenance of low-voltage drawer cabinet. In addition, by regularly recording the temperature change of low-voltage drawer cabinet and drawing the temperature change curve, it is also conducive to a deeper understanding of the power consumption and fault in the power supply network of low-voltage drawer cabinet.
2. Humidity: humidity is an insect bite parameter affecting the service life of the internal structure of low-voltage drawer cabinet. Too high humidity will not only bring the risk of internal high-voltage arc, but also produce certain metal corrosion, so it is also the focus of maintenance.
3. Air pressure: Generally speaking, the change of air pressure in conventional environment is not enough to affect the normal operation of low-voltage drawer cabinet, but sudden change of air pressure or air pressure in high altitude areas may have a certain impact.
4. Color and smell: color and temperature will not directly affect the low-voltage drawer cabinet, but generally, the smell and smoke of electric burning will appear in the low-voltage drawer cabinet after fault. Therefore, color and smell are still very important reference materials for the diagnosis of low-voltage drawer cabinet after fault.
Generally, in the circuit system that has been strictly planned and designed, the low-voltage drawer cabinet can only be overhauled according to the normal cycle. However, after the internal and external super large changes, the low-voltage drawer cabinet must be overhauled comprehensively, such as earthquake, super large voltage changes of upstream power plant / power grid, etc., there will be a variety of potential safety hazards.