What is gas Group II A?
What is gas Group II A?
Gas Groups
| GAS GROUPS | TYPICAL GAS EXAMPLE |
|---|---|
| I | Firedamp (Methane) and coal dust |
| IIA | Petrol, Propane, Industrial Methane |
| IIB | Coke Oven Gasses, Ethylene |
| IIC | Acetylene, Carbon Disulphide, Hydrogen |
What is group IIC?
– Group IIC—Atmospheres containing acetylene or hydrogen, or gases and vapors of equivalent hazard.
What is T4 temperature rating?
135
Temperature Classifications
| CLASS | SURFACE TEMPERATURE °C |
|---|---|
| T1 | <450 |
| T2 | <300 |
| T3 | <200 |
| T4 | <135 |
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 difference between EXE and EXD?
To give a very basic summary of the two: 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 ATEX IIC?
The ATEX code is an alphanumeric string that denotes the certification achieved by the product along with the environment and conditions it is suitable for. The code can be broken down into a prefix, for example: CE0518 Ex II 2 G and suffix, for example: Ex d IIC T6 Gb.
What is ATEX zone classification?
In a hazardous dust environment, an ATEX Zone 21 is classified as an area that is classified ‘as a place in which an explosive atmosphere in the form of a cloud of combustible dust in the air is likely to occur occasionally during normal operation’ whereas an ATEX Zone 22 is classified as ‘a place in which an explosive …
Is T4 better than T6?
A T6 Certified product is a good choice as it can be used in all other T classes….
| Class | Hazards which will not ignite at temperature below: |
|---|---|
| T4 | 135°C |
| T5 | 100°C |
| T6 | 85°C |
What is temp rating?
A temperature rating is a quantitative evaluation of a company’s target ambition based on publicly disclosed targets following the new temperature rating protocol. The result is a temperature rating, based on the publicly stated target ambition, on a scale from 1.5 to 3.2 degrees Celcius.
What is ATEX Group?
ATEX marking G stands for the presence of gases, vapours or mists. D stands for the presence of air/dusts mixtures. ATEX marking is applied to all equipment that is proved to be suitable for use in ATEX Zones.
What are the requirements for AEX IIc T4 GA?
Class I Zone 0 AEx ia IIC T4 Ga Hazard Class Protection Concept Code Area Classification Approved Dito US Standards Class I Division 1 Groups A&B T4 Temperature S Class Gas Group Hazard Class Area Classification Temperature Cla s Gas Group Equipment Protection Level NORTH AMERICA and ATEX & IECEx
What are the requirements for IECEx T4 GB 0359?
Typical ATEX and IECEx Marking II 2 G Ex d IIC T4 Gb 0359 Complies with European r ectiv* Equipment Protection Level Type of Protection Environment* Equipment Category* T emp ratu e Class (T1-T6) Gas Group pecific Marking for Explosion Protection* Equipment Notified Body Group* Number* *ATEX only Explosion Protection (EPL)
How is electrical equipment classified in Group II?
Electrical equipment in Group II (gas) is classified according to the characteristics of the explosive atmosphere (for which it is intended) into Groups IIA, IIB and IIC (Table 9). This assign- ment concerns the flameproof enclosure and intrinsic safety protection types.
Is there a zone 20-22 in Canada?
Note 2: Zones 20-22 are not currently classi˚ed in the Canadian Electric Code (CEC ). Enclosure Type IRatings [NEC & CEC ] Type Area Brief Definition