ISA 61241-0 : 2006

1 Scope
2 References
3 Definitions
4 Construction
   4.1 General
   4.3 Opening enclosures
   4.4 Environmental conditions
5 Temperatures
   5.1 Maximum surface temperature
   5.3 Ambient temperature
6 Enclosure materials
   6.1 Non-metallic enclosures and non-metallic parts
        of enclosures
   6.2 Enclosures containing light metals
7 Fasteners
   7.1 Access to live parts
   7.2 Compatible material
8 Interlocking devices
9 Bushings
   9.1 Prevention of turning
   9.2 Torque tests
10 Materials used for cementing
   10.1 Documentation
   10.2 Thermal stability
11 Ex components
   11.1 General
   11.2 Mounting
   11.3 Internal mounting
   11.4 External mounting
12 Connection facilities and terminal compartments
   12.1 Attached cables
   12.2 Terminal access
   12.3 Creepage and clearance
13 Connection facilities for earthing or bonding conductors
   13.1 Internal connection
   13.3 Apparatus not requiring earthing
   13.4 Size of conductor connection
   13.5 Effective contact
   13.6 Environmental
   13.7 Use of light metal
14 Entries into enclosures
   14.1 Identification of entries
   14.2 Cable glands
   14.3 Integral part of the apparatus
   14.4 Prevention of twisting
   14.5 Enclosure entry
   14.6 Blanking elements
   14.7 Branching point temperatures
15 Radiating equipment
16 Supplementary requirements for specific electrical
   apparatus - Rotating electrical machines
   16.1 Ventilation openings for external fans
   16.2 Construction and mounting of the ventilating systems
   16.3 Clearances for the ventilating system
   16.4 Materials for external fans and fanhoods
17 Switchgear
   17.1 Flammable dielectric
   17.2 Interlocking
   17.3 Indication of open position
   17.4 Openings
18 Fuses
19 Plugs and sockets
   19.1 Plugs and sockets construction
   19.2 Bolted plugs and sockets
   19.3 For Zone 21 and Zone 22
   19.4 Plugs remaining energised
20 Luminaires
   20.1 Light transmitting covers
   20.2 Guards
   20.3 Mounting
   20.4 Covers
   20.6 Types of lamps
21 Caplights and handlights
   21.1 Leakage
   21.2 Separate enclosures
22 Apparatus incorporating cells and batteries
   22.1 General
23 Verification and tests
   23.1 General
   23.2 Verification of documents
   23.3 Compliance of prototype or sample with documents
   23.4 Type tests
24 Routine verifications and tests
25 Manufacturer's responsibility
29 Marking
   29.1 General
   29.2 Marking of all electrical apparatus
   29.3 Multiple protection techniques
   29.4 Order of marking
   29.5 Reduced marking
   29.6 External grounding or bonding terminal
30 Examples of marking
   30.1 Apparatus type of protection "maD" for use in Zone 20
   30.2 Apparatus type of protection "iaD" for use in Zone 20
   30.3 Apparatus type of protection "pD" for use in Zone 21
   30.5 Apparatus type of protection "tD", for use in Zone 22
   30.6 Apparatus type of protection "tD", for use in Zone 22
Annex A (informative) - Common standards - Safety requirements
                        for electrical equipment
Annex B (informative) - Equipment grounding
Annex C (informative) - United States major deviations
Bibliography

Describes general requirements for the design, construction, testing and marking which is applicable to electrical apparatus protected by any recognized protection technique for use in areas where combustible dust may be present in quantities that could lead to a fire or explosion hazard.