Ex- and Haz-Loc pages Updated Dec. 22, 2000
This is an index page for:
Bookmark this page .. so you can use it again to
help you find the wealth of information on the Internet about the Zone
classification system for hazardous locations, the ATEX
directive , methods of
protection and the Ex Scheme.
Index of contents of Swansea Consulting's 'Ex- and Haz-Loc'
- --NEWS-- -
including info. such as seminars and abstracts of technical
News: Links to a separate page on this site.
Agencies Table - Table of haz. loc. eqpt. testing and certifying agencies:
Links to a separate page on this site.
....see also Certifying
Authorities, notes from Pepperl+Fuchs.
ATEX Directive: Links to a separate page on this site.
CSA certification for
Division or Zone classified areas: Links to
a separate page on this site.
Commercial links with less educational content : Links to a separate page on this site.
Electrical Heat Tracing standards - cross reference
chart: Links to a separate page on
for Hazardous areas, Industrial use and Non-industrial
protection techniques .. (Methods of
Ex d Flameproof - Zone 1
Ex e Increased safety - Zone 1
Ex h Hermetic Sealing - No longer permitted
Ex ia Intrinsic safety - Zone O or Zone 1
Ex ib Intrinsic safety - Zone 1
Ex m Encapsulation - Zone 1
Ex n Non Sparking Zone - Zone 2
Ex o Oil Immersion - Zone 1
Ex p Pressured enclosure - Zone 1 (px, py, pz -
IEC draft 79-2)
Ex q Sand filling - Zone 1
Ex s Special protection - Zone O or Zone 1
DIP Dust-Excluding Ignition proof - Class II
The International Standard IEC 60079-7 defines Increased
Safety "e" as follows:
Increased safety "e": Type of
protection applied to electrical apparatus that does not produce arcs or
sparks in normal service, in which additional measures are applied so as to
give increased security against the possibility of excessive temperatures
and of the occurrence of arcs and sparks.
NOTES: 1 This type of protection is
denoted by "e".
2 Apparatus producing arcs or sparks in normal service is excluded by
Ex Scheme: Link to a separate page on this site.
IEC notes: Link to a separate page on this site.
TC 31 and working group activities: External
Info. links such as API
and OSHA : Links to a separate page on this site.
Manufacturers of Ex- equipment
offering further information: Links to a
separate page on this site.
North American wiring
methods: Links to a separate page on this
Bodies: Links to a separate page on
Technical Books / Publications: Links to a separate
page on this site.
Links to a separate page on this site.
Testing and Certifying Agencies with
information pages mentioning Ex-e or Zones: Links to separate page on this site.
Zones and Divisions - Why the
increased interest in North America?
The US National Electrical Code (1999) and the Canadian
Electrical Code (1998) recognize the use of the Zone system of Hazardous
Location classification, as used in Europe and other parts of the world.
This provides the opportunity for electrical products designed for European
hazardous locations to gain acceptance in North America. Also, North
American companies now have a local, as well as an overseas market for
products specifically designed to offer methods of protection such as
the Ex-e method of protection. For more
detailed information, browse Killark faqs
(frequently asked questions) or (Killark 1997
information to this page. This page will be updated to include
links to web pages with information about the classification of Hazardous
Locations by the Division or Zone classification system. An index of
commercial links to pages describing electrical equipment meeting both
European Hazardous Location requirements and North American requirements is
also provided. This includes European equipment which can now become (or
is already) certified, listed or approved to Canadian or U.S. standards. To
add a link to your information, send details to:firstname.lastname@example.org
If you would like marketing/certification assistance,
or can offer suggestions for this web page, please send an e-mail to:
email@example.com Swansea Consulting, Toronto, Canada
These pages contain information which was available in public
documents. Any interpretation of the information is provided in good
faith to offer additional understanding. Users should conduct their own
independent evaluation to assure that all applications meet the requirements
of all relevant directives, as well as all local, regional and provincial
codes, laws and regulations.
Permission is granted to quote, copy, or otherwise reproduce
this material, provided that the following copywrite notice
is retained on each and every copy: (c) Copyright 2000 Swansea
Consulting. The consistent source of 'hazloc' information on the web
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