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Many corporate customers are often confused about the anti-corrosion level, protection level, and explosion-proof level that their products should have. Since there is only a one character difference between the names, and they all refer to the level of a certain aspect of the product, which is similar but different, what are the differences between them?

1、 Anti corrosion grade

1. Corrosion prevention is the use of various methods to protect metal objects that are prone to rusting, in order to extend their service life. Generally, physical corrosion prevention, chemical corrosion prevention, electrochemical corrosion prevention, and other methods are used.

2. The anti-corrosion level is classified into the following five levels according to indoor and outdoor:

For example, the corrosion resistance level WF1 of the lighting fixture indicates that it is suitable for moderate outdoor corrosive environmental conditions.

3. The standard for implementing anti-corrosion grade:

2、 Protection level

1. Protection level, code IP, abbreviation for Ingress Protection. The IP protection level system classifies the waterproof and dustproof characteristics of electrical appliances and packaging. At present, this system has been recognized by many countries.

2. Composition and meaning of protection level IP

The IP protection level is often composed of two digits to clarify the protection level.

The first X represents the dust protection level of the device, with the highest level being 6;

The second X represents the waterproof level of the device, with the highest level being 8.

(The larger the number, the higher the protection level)

Example: A display instrument labeled as IP65 indicates that the product can completely prevent dust from entering and can be rinsed with water without any harm.

3、 Explosion proof grade

1. Explosion proof certification refers to the work of determining whether equipment meets the requirements of explosion-proof standards, conducting type tests and routine tests for adaptation, and issuing relevant certificates of conformity. The explosion-proof certificate can be applied to Ex equipment or Ex components.

2. For each electrical equipment applying for explosion-proof certification, there will be corresponding explosion-proof marks, including explosion-proof type and explosion-proof level. Explosion proof level refers to the explosion-proof area, gas/dust group, temperature group, and equipment protection level applicable to the product. Taking the explosion-proof certificate in the following figure as an example: the explosion-proof mark is Ex d ib Ⅱ B T5 Gb, indicating that the product is a composite explosion-proof type (d ib: explosion-proof and intrinsic safety type); The explosion-proof level is d ib Ⅱ B T5 Gb, indicating that it is suitable for Zone 1, Class B factory gas, temperature group T5, and protection level Gb.

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