Intrinsically safe electrical equipment with what symbol

The symbol for intrinsically safe electrical equipment is usually "i". Intrinsically safe electrical equipment is a special type of electrical equipment, all of its circuits are intrinsically safe circuits, that is to say, in normal operation or under the specified fault conditions, the electrical sparks and thermal effects can not ignite the circuit of the explosive mixture. This type of equipment has a high degree of safety in use and is therefore widely used in explosive hazardous locations. The "i" symbol on the equipment usually indicates that the equipment is intrinsically safe and meets the requirements of the relevant safety standards. At the same time, according to different use scenarios and safety requirements, intrinsically safe electrical equipment also needs to comply with other relevant standards and regulations, such as the European ATEX directive, China's GB3836 series of standards and so on. It should be noted that intrinsically safe electrical equipment is only a relative safety measure and cannot completely eliminate the danger. Therefore, it needs to be combined with other safety measures, such as ventilation, explosion-proof, fire prevention, etc., to ensure safety during use.