![<?echo $_SERVER['SERVER_NAME'];?>](/template/twentyseventeen/skin/images/header.jpg)
one. Lamp related definition
1. Luminaire: Any device that can distribute, reveal, or transform light from one or more light sources, and includes the components necessary to support, secure, and protect the light source (but not the light source itself), as well as the necessary circuit aids and They are connected to the power supply.
2. Ordinary luminaires: Provides protection against accidental contact with live parts, but without special dust, solid foreign objects and waterproof grades.
3. Movable luminaire: A luminaire that can be moved from one location to another when connected to a power source during normal use.
4. Fixed luminaires: luminaires that cannot be easily moved from one location to another because they are so fixed that they can only be removed with the aid of tools.
5. Recessed luminaires: Manufacturers specify luminaires that are fully or partially embedded in the mounting surface.
6. Live parts: Conductive parts that may cause electric shock during normal use. The center conductor should be considered as a live part.
7. SELV-safety extra-low voltage: The AC voltage is effective between conductors or between any conductor and ground in a circuit isolated from a power supply such as a safety isolating transformer or converter. The value does not exceed 50V.
8. UL low voltage line: The open circuit voltage does not exceed the line value of the AC voltage RMS of 30V.
9. Basic insulation (EN): Insulation that is applied to live parts to provide basic protection against electric shock. The withstand voltage should be above 2U+1000V (U: local grid voltage).
10. Supplemental insulation (EN): A separate insulation attached to the base insulation to provide protection against electric shock in the event of a basic insulation failure. The withstand voltage should be above 2U + 1750V (single layer).
11. Double-layer insulation (EN): Insulation consisting of basic insulation and supplementary insulation. The withstand voltage should be above 4U+2750V (that is, the sum of basic insulation and supplementary insulation withstand voltage).
12. Reinforced insulation (EN): A reinforced insulation that is equivalent to double insulation. Generally speaking, it is generally only one layer, but it can also be composed of multiple layers, and each layer cannot be clearly divided and measured separately. The withstand voltage should be above 4U+2750V.
13. CLASS O-class lamp (EN): A luminaire with only basic insulation as a protection against electric shock, without grounding and other protective measures.
14. CLASS I Class Lamp (EN): In addition to the basic insulation for electric shock protection, other luminaires such as grounding are also used.
15. CLASS Class II luminaire (EN): A luminaire that is double insulated or that adds insulation to the protection of the electric shock. Its insulation effect does not depend on grounding or installation conditions.
16. CLASS III Class Lamp (EN): A luminaire that uses an extra low safety voltage (SELV) for protection against electric shock.
17. Normally flammable material: The material has a ignition temperature of at least 200 ° C, and at this temperature the material does not deform or decrease in strength. For example, wood and wood-based materials with a thickness greater than 2 mm.
18. Readyly flammable material: A material other than ordinary combustible materials and non-combustible materials. For example wood fibers and wood-based materials with a thickness of less than 2.
19. Non-combustible material: A material that does not support combustion. For example, metal, cement, and the like.
20: type test: test for the test sample, the purpose is to verify whether the design of a given product meets the requirements of the relevant standards, but whether the product after the final test meets the standard requirements in the production stage, Guaranteed by test report and related documents.
two. Introduction to the light bulb
1. Tungsten bulbs, including incandescent bulbs, quartz bulbs, and halogen bulbs.
Commonly used incandescent bulbs are: Type A, B, C, G, R, T,
European bulb Base – E14, E27.
Among them, the United Kingdom can also use B15, B22;
North American bulb Base Type – E12, E17, E26.
E-Edison (Edison screw); B-Bayonet (bayonet)
A. Commonly used quartz bulbs are Type T (JC), MR, JDR-C (GU10).
2. Fluorescent tubes are commonly used in FL (T5, T8, T12...), PL-S, PL-C, 2D and energy-saving lamps.
Note: The usual representations for tungsten bulbs and FL fluorescent tubes are: letters indicating the type (Type) plus Arabic numerals, for example: A19, B10, C7, G25, S11, T8..., where Arabic numerals indicate the approximate size of the bulb The diameter, such as the diameter of the A19 bulb D = 19 * 1 / 8", multiplied by 25.4 is the diameter of the bulb in mm.
Special case: The number of the European standard R bubble is the actual size of the bulb, such as R50, R80...
Common bulb shapes: thread A bubble, bayonet A bubble, B bubble, G bubble, R bubble, R7s solar tube, JC, G9, G4.0
Here you can find the related products in Recordable Sound module, we are professional manufacturer of Greeting Card Sound Module, Recordable Sound Module, Recordable Musical Module. We focused on international export product development, production and sales. We have improved quality control processes of Recordable sound module to ensure each export qualified product.
If you want to know more about the products in Recordable sound module, please click the product details to view parameters, models, pictures, prices and other information about Greeting Card Sound Module, Recordable Sound Module, Recordable Musical Module.
Whatever you are a group or individual, we will do our best to provide you with accurate and comprehensive message about Recordable sound module!
Greeting Cards Sound Module, Recordable Sound Module, Recordable Musical Module
AST Industry Co.,LTD , https://www.astsoundchip.com