Thursday, August 31, 2017

HAZARDOUS AREA CLASSIFICATIONS Part 5 - last Part with definatations

You might have heard IP-55 or IP-56 for your New Mobile phone specification , here is the explanation.

 INGRESS PROTECTION: IP Ratings


• Two digits are used to denote the level of ingress protection for a piece of apparatus.

• 1st digit for the protection against solid objects & 2nd for the protection against liquids.

• Provides basis for suitability for a product depending on environmental condition the product.

First Number
Second Number
Protection against Solid Objects
Protection against liquids
0
No Protection
0
No Protection
1
> 50 mm e.g. hands
1
Vertically dripping water
2
> 12 mm e.g. fingers
2
Angled dripping water i.e.15°
3
> 2.5 mm e.g. tools
3
Sprayed water i.e.60°
4
> 1 mm e.g. wires
4
Splashed water from all directions
5
Dust protected
 (No harmful deposits)
5
Water jets from all directions
6
Dust tight (Total protection)
6
Strong water jets from all directions


7
Immersion upto 1 mtr. & 15 cm


8
Indefinite Immersion
 

CENELEC Marking information:      




ATEX Directive: Atmospheriques Explosives 

          After 1st July 2003, ATEX Directive comes into force throughout Europe. 

          ATEX is continuum  of CENELEC standards & addressing to Dust hazardous.

          To remove trade barrier within Europe.

          Two specific Directives 95a(100a) aimed at manufacturers of equipment intended for use in Hazardous area; 137(118a) aimed at personal safety where sites embrace hazardous areas.

Product Certification Standards:

          CSA: Canadian Standard Association. Canada & U.S.
          FM: Factory Mutual. Aus., Canada, China, European countries.
          UL: Underwriters Laboratories. U.S., U.K., India, HK, Japan.
Statutory Approvals in India:
          Testing Authority – CMRS Dhanbad
          Approving Authority – CCOE Nagpur ; DGFASLI
          Licensing Authority – BIS.

Glossary of Terms used: -

        CENELEC: European committee for Electro-technical Standardization.
        IEC: International Electro-technical Commission.
       Euronorm: Standard developed by CENELEC applying to apparatus for use in hazardous locations. e.g. EN 50018.
      BASEEFA: British Approvals Service for Electrical Equipment in Flammable Atmospheres.
    ATEX Directive: It's an continuum to Cenelec standards and taken care of Dust hazards. To remove trade barriers within EU.
       CE Mark: It's an official marking required in Europe for all electric & electronic equipment that will be sold or put into service for the 1st time.

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