-
The content of the protection level of lamps and lanterns is waterproof and dustproof, and the expression is: IP00, such as IP65, 6 represents the dustproof level, 5 represents the waterproof level, the higher the protection level, the higher the value, the value is from 0 9.
-
The explosion-proof category and grade temperature group of explosion-proof lamps are shown in the national standard. According to the explosion-proof type, it can be divided into five main types, explosion-proof type, increased safety type, positive pressure type, non-sparking type and dust explosion-proof type. It can also consist of other explosion-proof types and the explosion-proof types mentioned above, composite types, and special types.
According to the type of electric shock protection, anti-electric shock protection is to prevent the easily accessible parts of explosion-proof lamps from being electrified, so that the human body is subjected to electric shock or conductor contact with different potentials to produce electric sparks and ignite the ** mixture.
The easy-to-contact conductive parts that are not charged during normal operation are connected, and the protective grounding conductor in the fixed line is strongly insulated as a safety protection measure. No grounding protection. The effective value of the stage does not exceed the safe voltage.
No voltage higher than this value is generated. The first number indicates the ability to protect people, solid foreign objects, or dust. An explosion-proof lamp is a type of sealed lamp that is at least dustproof to the fourth level. Indicates the water protection capacity, and the classification of the support surface material according to the luminaire design.
Indoor explosion-proof luminaires can be installed on many surfaces, wooden walls and ceilings that are common combustible materials.
The temperature of the installation surface of the explosion-proof luminaire is not allowed to exceed the safe value. According to whether explosion-proof lamps can be directly installed on the surface of ordinary combustible materials, they can be divided into two categories. The first category is only suitable for luminaires installed on non-combustible surfaces.
The other category is suitable for lighting that is directly installed on the surface of ordinary combustible materials, with marking symbols, and can be divided into fixed, mobile and portable according to the form of installation and use.
The safety level of lamp protection defines the ability of the interface to protect against liquid and solid particles, indicating the level of protection of the luminaire against dust and foreign body intrusion.
Microtubules for surface mounting.
Wait. shape luminous intensity.
The angular distribution can be estimated from a half-value perspective. It can be used as a local illumination source or in combination with a light detector to form an automatic detection system. There are full epoxy packages, metal-based epoxy packages, ceramic-based epoxy packages and glass packages.
Ordinary brightness is divided according to luminous intensity and working current.
-
The wires of class 0 lamps generally have only one layer of rubber, and you can see the copper wire inside when you peel off the rubber, and the plug of the wire does not have a grounding port. Class, class, class lamps will be clearly marked on the product packaging, class lamps will have grounding signs; Class lamps will have the word "Hui" mark; Lamps will have a diamond-shaped block with Roman numerals inside, and by looking at these signs, consumers can clearly distinguish the category of the lamp.
-
They are divided into 0 types of lamps, a class of lamps, a class of lamps, and a class of 3 lamps. These lamps are very safe, and the quality is also very good, and it is also very cost-effective. So be sure to choose lamps according to your family situation.
And also according to the style, size, color to choose. And when choosing lamps and lanterns, you must pay attention to the details and don't bring unnecessary trouble to yourself.
-
Groundless lamps, insulated shell lamps, electrocutable lamps, isolated dust lamps, zero class lamps, etc., these are some grade classifications of lamps.
-
Class 0 lamps and lanterns include non-ground lamps, class lamps, including grounded lamps, lamps and lanterns, and lamps and lanterns, which generally include these kinds of lamps.
-
There are 0 types of lamps, class lamps and class lamps, and class lamps, and each level of props has a different focus, and the effect is also very different.
-
The state has a clear standard for eye protection lighting, and the standard is the national A level, and the highest is the national AA level. The main difference between country A and country AA is that the illumination is not the same, and the illumination of country AA is about twice the stare posture of country A standard. According to relevant policies and regulations, within one-third of the sector with a radius of 300mm from the center of the circle, the national A-level illumination is more than 250lx;
The national AA illumination is above 500lx. Although the A-level eye protection lamp also meets the national standard, from the perspective of eye health, it is best to choose the national AA-level eye protection lamp, but the national AA-level Zen eggplant eye protection lamp is relatively more expensive. According to the relevant requirements of the building interior lighting design standards, the illumination of the table lamp is required to be more than 500lx.
-
The content of the protection level of lamps and lanterns is waterproof and dustproof, and the expression is: IP00, such as IP65, 6 represents the dustproof level, 5 represents the waterproof level, the higher the protection level, the higher the value, the value is from 0 9.
-
IP00-IP68, the higher the value, the better the protection.
-
Generally, IP54 or IP65 protection level test is done.
-
1. The explosion-proof category, grade and temperature group of explosion-proof lamps are specified in the national standard.
2. According to the explosion-proof type, it can be divided into five main types: flameproof type, increased safety type, positive pressure type, non-spark type and dust explosion-proof type, and can also be combined by other explosion-proof types and the above-mentioned explosion-proof types, or composite types and special types.
3. According to the type of anti-electric shock protection, it can be divided into , class. The anti-electric shock protection is to prevent the easily accessible parts of the explosion-proof lamp shell from being electrified, so that the human body is electrocuted or the conductors of different potentials are touched to produce electric sparks and ignite the ** mixture. Class A – On the basis of basic insulation, easily accessible conductive parts that are not charged during normal operation are connected to the protective grounding conductor in a fixed line.
Class B - double insulation or reinforced insulation as a safety protection measure, no grounding protection. Class C – Use a safe voltage with an effective value of no more than 50V and in which no higher voltage values will be generated. Category D0 – relies only on basic insulation as a safety protection measure.
The vast majority of explosion-proof lamps and lanterns are classified as Class I lamps, and only a few are Class I lamps. For example: all-plastic explosion-proof lamps, explosion-proof flashlights.
Bright explosion-proof lamps.
4. Classification according to the protection level of the shell: In order to protect dust, solid foreign matter and water from entering the lamp cavity, touching or accumulating on the live parts to cause flashover, short circuit or damage to electrical insulation and other dangers, there are a variety of shell protection methods to protect the electrical insulation. The characteristic letter "IP" followed by two numbers is used to characterize the enclosure rating.
The first digit indicates protection against people, solid foreign objects or dust. It is divided into 0-6 levels. Explosion-proof lamps are a kind of sealed lamps, and their dustproof ability is at least 4 or above, and the second number indicates the ability to protect against water, which is divided into 0-8 levels.
5 Classification according to the supporting surface material of the lamp design: Indoor explosion-proof lamps may be installed on many surfaces that are common combustible materials, such as wooden walls and ceilings, which do not allow the temperature of the installation surface of explosion-proof lamps to exceed the safe value. According to whether explosion-proof lamps can be directly installed on the surface of ordinary combustible materials, they can be divided into two categories.
The first category is lamps that are only suitable for installation on non-combustible surfaces. The other type is suitable for direct installation on the surface of ordinary combustible materials, with marking symbols.
6. According to the form of installation and use, it can be divided into fixed, movable and portable.
Wealth is used for bounties, and experience determines level, so how many levels you have and wealth are not necessarily equal. >>>More
French law classifies French wines into 4 grades:
1.AOC wines. >>>More
The selection and transfer of students refers to the planned selection and transfer of fresh graduates with a bachelor's degree or above from institutions of higher learning from institutions of higher learning to work at the grassroots level, and to focus on training them as reserve candidates for party and government leading cadres at all levels and high-quality staff candidates for party and government nationality at or above the county level. They not only have the status of state civil servants, but also focus on cultivating reserve candidates for party and government leading cadres, which can be said to be "reserve cadres." >>>More
I'm also oily** I already have the answer to this search. >>>More
The Southern Dynasty Liang general Wang Seng argued, originally a Xianbei clan, surnamed Karasuma, and later changed his surname to Wang; >>>More