News Aperçu



Ex:
Aperçu
Capteurs EX
Physic principles and definitions
Statutory regulations and standards
Technical Principles
Installation and Operation of Electrical Equipment
Appendix

Appendix


Comparison of IEC Publications and European Standards (EN)

Electrical Apparatus for Explosive Gas Atmosphere:

IEC EN (new) EN (old)
General requirements IEC 60079-0 EN 60079-0 EN 50 014
Flameproof enclosures “d” IEC 60079-1 EN 60079-1 EN 50 018
Construction and verification test of flameproof enclosures of electrical apparatus IEC 60079-1-1
Pressurized enclosures “p” IEC 60079-2 EN 60079-2 EN 50 016
Method of test for ignition temperature IEC 60079-4
Powder filling “q” IEC 60079-5 EN 60079-5 EN 50 017
Oil-immersion “o” IEC 60079-6 EN 60079-6 EN 50 015
Increased safety “e” IEC 60079-7 EN 60079-7 EN 50 019
Classification of hazardous areas IEC 60079-10 EN 60079-10
Intrinsic Safety “i” IEC 60079-11 EN 60079-11 EN 50 020
Classification of mixtures of gases or vapours with air according to their maximum experimental safe gaps and minimum ignition currents IEC/TR 60079-12
Construction and use of rooms or buildings protected by pressurization IEC/TR 60079-13
Electrical installations in hazardous areas (other than mines) IEC 60079-14 EN 60079-14
Type of protection “n” IEC 60079-15 EN 60079-15 EN 50 021
Artificial ventilation for the protection of analyser(s) houses IEC/TR 60079-16
Inspection and maintenance of electrical installations in hazardous areas (other than mines) IEC 60079-17 EN 60079-17
Encapsulation “m” IEC 60079-18 EN 60079-18 EN 50 028
Repair and overhaul for apparatus used in potentially explosive atmospheres (other than mines or explosives) IEC 60079-19 EN 60079-19
Data for flammable gases and vapours, relating to the use of electrical apparatus IEC/TR 60079-20
Intrinsically safe systems IEC 60079-25 EN 60079-25
Electrical Equipment for Zone 0 IEC 60079-26 EN 60079-26 EN 50 284
Fieldbus intrinsically safe concept (FISCO) and Fieldbus nonincendive Concept (FNICO) IEC 60079-27 EN 60079-27
Protection of devices and transmission systems which work with optical radiation EN 60079-28
Electrical apparatus for the detection and measurement of flammable gases – general requirements and performance requirements EN 60079-29-1


Electrical Apparatus for Use in the Presence of Combustible Dust:

IEC (new) IEC (old) EN (new) EN (old)
General requirements IEC 61241-0 IEC 61241-1-1 EN 61241-0 EN 50281-1-1
Protected by enclosures “tD” IEC 61241-1 IEC 61241-1-1 EN 61241-1 EN 50281-1-1
Pressurized enclosures “pD” IEC 61241-4 EN 61241-4
Classification of potentially explosive dust atmospheres EN 61241-10
Intrinsic Safety “iD” IEC 61241-11 EN 61241-5 EN 61241-11
Selection and installation EN 61241-14
Inspection and maintenance of electrical installations in hazardous areas (other than mines) EN 61241-17
Encapsulation “mD” IEC 61241-18 EN 61241-18
Test methods: minimum ignition temperature IEC 61241-2-1 EN 50281-2-1
Test methods: resistivity of dust in layers IEC 61241-2-2 EN 61241-2-2
Test methods: minimum ignition energy IEC 61241-2-3

Remark: Some of the standards are in preparation!


Safety Characteristics of Flammable Gases and Vapours

Safety Ratings: Ignition Temperature, Temperature Class and Explosion Group:

Material Ignition Temperature °C Temperature Class Explosion Group
1,2-Dichloroethane 440 T 2 II A
Acetaldehyde 155 T 4 II A
Acetic acid 485 T 1 II A
Acetic anhydride 330 T 2 II A
Ammonium 630 T 1 II A
Acetone 535 T 1 II A
Acetylene 305 T 2 II C³
Ammonium 630 T 1 II A
Benzene 555 T 1 II A
Carbon disulphide 95 T 6 II C¹
Carbon monoxide 605 T 1 II A
Cyclohexanone 430 T 2 II A
Diethyl ether 175 T 4 II B
Diesel fuels 220 T 3 II A
Ethane 515 T 1 II A
Ethanol 400 T 2 II B
Ethene 440 T 2 II B
Ethyl chloride 510 T 1 II A
Ethyl ethanoate 470 T 1 II A
Ethyl glycol 235 T 3 II B
Ethylene oxide 435
(self-decomposing)		 T 2 II B
Fuel oil EL, L, M, S 220 to 300 T 3 II A
Hydrogen 560 T 1 II C²
Hydrogen sulphide 270 T 3 II B
i-Amyl acetate 380 T 2 II A
Methane 595 T 1 II A
Methanol 440 T 2 II A
Methyl chloride 625 T 1 II A
Naphthalene 540 T 1 II A
n-Butane 365 T 2 II A
n-Butanol 325 T 2 II B
n-Hexane 230 T 3 II A
n-Propyl alcohol 385 T 2 II B*
Petrol fuels 220 to 300 T 3 II A
Phenol 595 T 1 II A
Propane 470 T 1 II A
Toluene 535 T 1 II A

Remark: Some of the standards are in preparation!
*The gas group for this substance has not yet been determined.
¹1Also gas groups II B + CS2
²1Also gas groups II B + H2
³1Also gas groups II B + C2 H2


Degrees of Protection according to IEC 60 529 - IPXX:

Digit First digit
Physical protection		 Foreign body protection Second digit
Water protection
0 No protection No protection No protection
1 Protection against back of hand contact Protection against solid foreign bodies 50 mm ø Protection against water drops falling vertically
2 Protection against finger contact Protection against solid foreign bodies 12.5 mm ø Protection against water drops falling at an angle (15 °)
3 Protection against contact from tools Protection against solid foreign bodies 2.5 mm ø Protection against water-spray at an angle up to 60 °
4 Protection against contact with a wire Protection against solid foreign bodies 1.0 mm ø Protection against water spray from all directions
5 Protection against contact with a wire Protection against dust Protection against water jets
6 Protection against contact with a wire Dust-tight Protection against strong water jets
7 Protection against intermittent immersion in water
8 Protection against continuous immersion in water


last Update: 2012-02-06