The problem of electric power equipment withstand voltageWhy does the pressure decrease when the altitude is high? The air is thin, is not easy to breakdown (vacuum breakdown is not very low atmospheric pressure)
Although the degree of vacuum is higher than that of the low altitude, the relationship between the insulation strength and the degree of vacuum, especially from the atmosphere to the beginning of the high vacuum. Insulation strength is high - low - high change process
Because of the low air pressure in the air at high altitude, at the same voltage
The air is easy to produce ionization, so it is necessary to improve the insulation level and increase the gap of high voltage electrical apparatus
