Analysis of the definition of lamps

Related definitions

1, the lamp: those who can assign an instrument issued or out, a change or a plurality of light source, and includes a fixed support, and protect the source of necessary components (but not including the light source itself), and circuit auxiliary device required and are connected with the power supply facilities.

2, ordinary lamps: to provide protection against accidental contact with live parts, but there is no special dust, solid foreign body and waterproof grade lamps.

3, portable lamps: when used normally, the lamp is connected to the power supply can be moved from one place to another.

4, fixed lamps: can not easily moved from one place to another place, because the fixture so that the lamp can only be removed by means of tools.

5, embedded lamps: manufacturers specify complete or partially embedded in the surface of the installation of lamps.

6, live parts: in the normal use of the process, may cause electric shock conductive parts. The central conductor shall be regarded as a live part.

7, EN safety extra low voltage (SELV - safetyextra-lowvoltage): through circuits such as safety isolating transformers and power supply converter or isolated, between the conductors or between conductors and grounding, the AC voltage effective value does not exceed 50V.

8, UL low voltage line: open circuit voltage does not exceed the effective value of AC voltage 30V line.

9, basic insulation (EN): add on the live parts to provide basic protection against electric shock insulation. Voltage should be more than 2U+1000V (U: local grid voltage).

10, supplementary insulation (EN): attached to the basic insulation on the basis of independent insulation for basic insulation failure to provide protection against electric shock. Pressure value should be above 2U+1750V (monolayer).

11, double insulation (EN): basic insulation and the insulation of the composition of the insulation, the pressure value should be more than 4U+2750V (that is, the basic insulation and the insulation of the pressure and resistance).

12, reinforced insulation (EN): insulation effect and double insulation equivalent to a reinforced insulation. Generally speaking, it is generally only one layer, but it can also be made up of many layers, and each layer can not be clearly divided and measured separately. Pressure value should be more than 4U+2750V.

13, CLASSO lamp (EN): only the basic insulation for electric shock protection measures of lamps, no grounding and other protective measures.

14, CLASSI lamp (EN): in addition to the basic insulation for electric shock protection measures, but also the use of other protective measures such as grounding lamps.

15, class CLASSII lamps and lanterns (EN): take double insulation or increase insulation for electric shock protection measures. The insulation effect is not dependent on grounding or installation conditions.

16, CLASSIII lamp (EN): the use of extra low voltage (SELV) for the protection against electric shock lamps.

17, ordinary combustible material (normallyflammablematerial): the ignition temperature of the material is at least 200 degrees C, and at this temperature, the material will not be deformed or reduced strength. Wood and wood based material with a thickness greater than 2mm.

18, flammable materials (readilyflammablematerial): ordinary combustible materials and non combustible materials other than a material. Such as wood fibers and wood based materials with a thickness less than 2.

19, non combustible material (non-combustiblematerial): can not combustion material. Such as metal, cement, etc..

20: type test (typetest): to test the type test sample, the purpose is to test the design of a given product meets the requirements of relevant standards, but by type testing of products after production stage in compliance with the requirements of the standard, need to be guaranteed by the test report and related documents.