It is very likely that the quality of the high-voltage distribution cabinet has a relationship with the user in the purchase of distribution cabinets did not pay attention to its quality, and now on the market some of the quality of unqualified distribution cabinets also exists, therefore, its quality factors are also the main reason for the failure of the distribution box, may be some of the models of different types of inappropriate use of the contactor led to the electric gate burned out, which led to the failure.
The cause of the failure of high-voltage power distribution cabinet is also linked to the surrounding temperature factors, such as some high temperature, low temperature environment, humid environment will affect its use, and some distribution cabinets are set up outside, but also affected by the high temperature of the sun, these high-temperature factors can make the distribution box of the equipment temperature rises, so that the high-voltage distribution cabinet components can not withstand, and thus the electrical appliances of some components of the overheating The phenomenon leads to the occurrence of failure.
Expanded:
Substation classification:
1, a class of substations. It refers to AC ultra-high voltage stations, nuclear power, large energy bases (3 million kw and above) transmission and cross-region (North China, Central China, East China, Northeast China, Northwest China) liaison 750/500/330kV substations.
2, two types of substations. Refers to other than a class of substations, 750/500/330kV substations, power plant transmission substations (1 million kW and above, 3 million kW or less) and cross-provincial liaison 220kV substations, the main transformer or busbar outage, switch refuses to move caused by the fourth level and above the power grid event substation.