Capacitors are one of the most widely used components in electronic products, but there are also security risks when capacitors are under high voltage and current.
High-voltage capacitors may bring terrible damage when their voltages exceed its standard voltages.Insulation failure may resultsmall units which are full of the oil (these oils are usually isolated from air) produce arc evaporation to lead liquid insulation, causing capacitors bulge, rupture or explosion.Hard-packed cylindrical glass or plastic capacitors are easy to burst than capacitors with rectangular package,but the capacitors with rectangular package are not easy to crack under high voltage.
Capacitors used in RF circuits and worked long in the strong current will overheat, especially roll of capacitor center. Even if the outside temperature is low, but the heat can not be distributed out in time, gathering in-house may result in high heat in internal and damage of capacitors.
As to capacitor group in the high-energy working environment, if one fails to make the current cut off suddenly, the energy stored in the other capacitors will flock to the capacitor of failure, which is likely to lead to violent explosion.High voltage vacuum capacitors will give a certain X-rays even when they are used correctly. Proper sealing, melting (fusing) and preventive maintenance will help reduce these potential dangers.