What is the meaning of the temperature in the explosion proof grade of the motor?

Meaning of EX(IA) C T6 : Symbol Content Symbol Meaning Explosion-proof Statement EX Meets a certain explosion-proof standard, such as China's national standard explosion-proof method IA adopts Class IA intrinsically safe explosion-proof method, which can be installed in Zone 0 gas category C is allowed to involve Class C ** gas temperature group T6 The surface temperature of the instrument does not exceed 85 Temperature group Safe object surface temperature Common ** gas T1 450 gas, acrylonitrile, etc. 46 kinds of T2 300 acetylene, ethylene, etc. 47 kinds of T3 200 Gasoline, 36 kinds of T4 135 acetaldehyde such as butenal, 6 kinds of T5 100 carbon disulfide such as tetrafluoroethylene.

T6 85 Ethyl nitrate and ethyl nitrite.

The United States and Canada first divided the ** sexual objects scattered in the air into three classes (classes): class gases and vapors; class dust ; class fibersThe gas and dust are then grouped

Group name: Representative gas or dust.

a acetylene b hydrogen.

c ethylene d propane.

e Metal dust.

f Coal dust.

g Grain dust.

It is the insulation grade of the coil in your motor, that is, the temperature of your coil, and the coil in this market is divided into many grades.

This temperature is explosion-proof in this range! This should be gasoline and some aldehyde gas!

1. IEC Cenelec Europe and North America FM standards are often used, while Canada CSA standards are almost not used in China.

Example: CENELEC: EEX DE EEX D IB IIC T2-T6

fm: ni/i/z/abcd dip/ii, iii/1/efg

xp/i/1/abcd dip/ii, iii/1/efg

csa: class i, div 2, abcd

2. The new European explosion-proof standard ATEX100A will replace the original CENELEC standard (as of 2003).

atex 100a： ii ig eex ia iib t6

i ii 1g zone 0 1d, 2d,3d dust explosion

mining other 2g zone 1

industry industry 3g zone 2

How is the explosion-proof grade of the motor divided?

The explosion-proof grades of the motor are as follows:

The unprotected motor is not tested without special protection, but it should comply with the regulations.

Motors that protect against solids larger than 50 mm prevent large areas of the human body from accidentally touching or approaching live or rotating parts of the shell. It can prevent solid foreign objects with a diameter of more than 50mm from entering the pants shell.

Motors that protect solids larger than 12mm can prevent solid foreign objects with a diameter of more than 12mm from entering the shell.

Larger-than-solid motors prevent larger-diameter tools or wires from touching the land liquid or approaching live or rotating parts inside the shell.

Motors that protect solids larger than 1 mm prevent wires or strips with a diameter or thickness greater than 1 mm from touching or approaching live or rotating parts within the shell.

The dust-proof motor should withstand splashing water in any direction without harmful effects.

The explosion-proof level is the same, and the specific T2 can be used depends on the regional environment in which the macro motor is rented, which is related to the ** gas in the poor environment, and the temperature and sparks on the surface of the equipment have nothing to do with it.

The explosion-proof level is the same, but the temperature group is different, it should be said that T4 is better, and T4 motor has a smaller temperature rise.

An explosion-proof motor is a kind of motor that can be used in flammable and explosive places, and does not produce electric sparks when running.