Classification according to the protection level of the enclosure: in order to prevent dust, solid foreign matters and water from entering the lamp chamber, touching or accumulating on live parts may cause fire, short circuit or damage to electrical insulation, there are many enclosure protection methods to protect electrical insulation. The characteristic letter "IP" followed by two numbers is used to characterize the degree of protection of its enclosure. The first number indicates the protection ability against people, solid foreign matters or dust. It is divided into 0-6 levels. The explosion-proof lamp is a sealed lamp, and its dust-proof ability * * * is at least more than level 4. The second number indicates the water protection ability, which is divided into level 0-8.
Ordinary lamps and lanterns refer to the instruments that can transmit light, distribute and change the light distribution of the light source, so that the light source can reliably emit light to meet the light needs of human beings when they are engaged in various activities. In addition to the electric light source, modern electric lamps also include optical components, electrical components and mechanical components.
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