In order to ensure electrical safety, all the parts of the lamps that are energized must be insulated with insulating materials. This measure of personal safety of the lamps is called protection against electric shock. According to the method of protection against electric shock, the lamps and lanterns can be divided into 0, I, II and III total 4 categories.
Category 0 protection depends on basic insulation, that is, where there is a high degree of safety in the accessible parts and insulation between the housing and the live parts, and the installation and maintenance of the lamps are convenient. Such as the air drying, dust, wooden floor and other conditions under the chandelier, ceiling lamps and so on.
In addition to the basic insulation, type I, the accessible part and the shell are grounded, and once the basic insulation fails, there is no danger.
For metal housing fixtures, such as floodlights, street lights, garden lights, etc., to improve safety.
Class II addition to basic insulation, supplemental insulation, double insulation or price reinforced insulation, improve safety,
With good insulation and high safety, it is suitable for lamps that are often in poor touch, such as lamps and portable lights.
Class III uses an extremely low safety voltage (AC rms < 50V) and no voltage above this value will be generated in the lamp.
Lamps have a high degree of safety and are used in harsh environments such as machine tool work lights and children's lights.
Category 0 protection depends on basic insulation, that is, where there is a high degree of safety in the accessible parts and insulation between the housing and the live parts, and the installation and maintenance of the lamps are convenient. Such as the air drying, dust, wooden floor and other conditions under the chandelier, ceiling lamps and so on.
In addition to the basic insulation, type I, the accessible part and the shell are grounded, and once the basic insulation fails, there is no danger.
For metal housing fixtures, such as floodlights, street lights, garden lights, etc., to improve safety.
Class II addition to basic insulation, supplemental insulation, double insulation or price reinforced insulation, improve safety,
With good insulation and high safety, it is suitable for lamps that are often in poor touch, such as lamps and portable lights.
Class III uses an extremely low safety voltage (AC rms < 50V) and no voltage above this value will be generated in the lamp.
Lamps have a high degree of safety and are used in harsh environments such as machine tool work lights and children's lights.
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