What is gas group IIA IIB?
What is gas group IIA IIB?
– Group IIA—Atmospheres containing propane, or gases and vapors of equivalent hazard. – Group IIB—Atmospheres containing ethylene, or gases and vapors of equivalent hazard. – Group IIC—Atmospheres containing acetylene or hydrogen, or gases and vapors of equivalent hazard.
What is ATEX Group II?
ATEX equipment group II: Equipment in this category is intended for use in areas in which explosive atmospheres caused by gases, vapours, mists or air/dust mixtures are likely to occur occasionally.
What is ATEX Ex d?
Ex d is commonly and incorrectly known as explosion proof but it actually is described as flameproof. The housing will contain a flame without allowing it to escape to the hazardous atmosphere. Ex e means increased safety referring to the lack of arcs, sparks or hot surfaces.
What is ex D classification?
> Flameproof « Ex d » equipment Contain an internal explosion without permanent distortions. • Guarantee that the explosion cannot be transmitted to the surrounding atmosphere. • Have a temperature at any points on the surface that is lower than the self ignition temperature of the surrounding gases or vapors.
What is the difference between Ex e and Ex d?
While there are various different protection methods, two are particular common in Ex luminaires; Ex e ‘increased safety’, and Ex d ‘flameproof’; Ex e – luminaires approved to this standard are designed to be cool running and prevent arcs, sparks and hotspots from occurring.
What is difference between EXE and EXD?
Exe enclosures are deemed ‘explosion protected’ but not necessarily ‘flame proof’ Exd enclosures are ‘flame proof’ which means they should contain an explosion.
What is the difference between Class 1 and Class 2 electrical equipment?
The Earth continuity and insulation resistance tests are carried out when the class 1 appliances are tested. The user of a Class 2 appliance is protected by two layers of insulation. Class 2 appliances are also known as Double insulated.
What does ATEX CODE II 2G eexd T4 mean?
An ATEX approved electrical product is marked with the following code: II 2G Eexd IIB T4 From the breakdown of the code below it can be seen that the product is flameproof,suitable for use in zone 1 surface applications where gas group B gases may be present and the surface temperature of the product under fault conditions will not exceed 135 ºC.
What does 2 g e ex IB T4 stand for?
2 G E Ex ib IIC T4 PROTECTING YOUR PROCESS INSTALLATION AND SELECTION OF APPARATUS SELECTION OF ELECTRICAL APPARATUS, PROTECTION FROM DANGEROUS SPARKING, WIRING SYSTEMS AND FURTHER REQUIREMENTS ACCORDING TO IEC/EN 60079-14 (GAS) AND IEC/EN 61241-14 (DUST) E Ex ib IIC T4 Application area
What is the general information of ATEX EEX?
General information EEx defines that this is an electrical device. This defines which measures are used to ensure explosion protection. The following ignition protection classes are used by AIRTEC: m = Encapsulation, ia = Intrinsic safety, c = Safe by design Other ignition protection classes are defined in EN 50014: 1997.