The EEXP\EEXD\EEXDE\EEXE\EEXNA\CEI/IEC significance? Domestic often speak of explosion-proof electrical, fire, explosion motor motor, the motor will be able to use the above letters? How to use the above letters of the alphabet with industry terms mean? Here we have to look at the explosion-proof motor common professional terminology explained:
Eexp: positive pressure; EEXD: Every knock-eexde: every explosive by the type;
Eexe: increase the profile of EEXNA: Sparks Explosion-proof; CEI: the International Electrotechnical Commission (IEC:
Every explosive (EEXD) motor and the motor (EEXE) is the most commonly used 2 types of explosion-proof motors, EEXD application environments than eexe later.
Explosion-proof motor: Motor collectively to refer to a wide range of explosion-proof standard motor, including a variety of explosion-proof type;
Fire motor: flameproofmotor, collectively referred to as the motor, there is no specific standard that we generally believe that fire motor can also be called the explosion-proof motor;
By the motor; EEXE
Every explosive eexd motor:
2G, 2D, the representative of 2GD significance.
2G indicates that the surface gas high protection category, the 2D indicates that the surface dust high protection category, 2GD said surface gas and dust high protection category. Where the G, D, represents the type of explosive atmospheres: G (gas, vapor or mist) and D (dust)
Groupi, IIB and IIC; where I and IIB and IIC representative significance.
I kind of device: for the underground portion of the mine equipment and mine for these ground facilities of the device, not as a result of landfill gas and/or flammable dusts and dangerous. Class II equipment: factory electrical device used to be as a result of explosive atmospheres and a hazard to other occasions.
Class II equipment is further broken down into: II class A (propane); II Class B (vinyl); II Class C (hydrogen); (ii) all gas, A gas environment of propane gas, B indicates that the environment is vinyl, class C indicates that the gas environment of hydrogen.
Iib and IIC is electrical and gas explosion-proof level
Iib represents the Minimum ignition energy of 60 micro focus.
The IIC represents the Minimum ignition energy of 20 micro focus.
The temperature class T3, T4, T5 and T6.
Electrical equipment by its maximum surface temperature is divided into T1 and T6 Group, makes the corresponding T1 to T6 group of electrical devices, the maximum surface temperature will not exceed the corresponding temperature groups allowed value.