Classification of protection against electric shock For the purpose of electrical safety, all parts of the lamp that have electrified electric parts must be insulated with insulating materials. This measure of personal protection of lamps and lanterns 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. (See the following table) Modes, lamps can be divided into 0 types of protection dependent on the basic insulation, that is, in the accessible parts and insulation between the shell and the charged body for a high degree of safety, and the lamp installation and maintenance. 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.
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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