EXPLOSIVE ATMOSPHERES - PART 1: EQUIPMENT PROTECTION BY FLAMEPROOF ENCLOSURES 'D'
International Electrotechnical Committee
CONTENTS
FOREWORD
1 Scope
2 Normative references
3 Terms and definitions
4 Level of protection (equipment protection level, EPL)
5 Flameproof joints
6 Sealed joints
7 Operating rods
8 Supplementary requirements for shafts and bearings
9 Light-transmitting parts
10 Breathing and draining devices which form part
of a flameproof enclosure
11 Fasteners, associated holes and blanking elements
and openings
12 Materials and mechanical strength of enclosures -
Materials inside the enclosures
13 Entries for flameproof enclosures
14 Verification and tests
15 Type tests
16 Routine tests
17 Switchgear for Group I
18 Lampholders and Iamp caps
19 Non-metallic enclosures and non-metallic parts of
enclosures
20 Marking
21 Instructions
Annex A (normative) - Additional requirements for crimped
ribbon elements and multiple screen elements of
breathing and draining devices
Annex B (normative) - Additional requirements for elements,
with non-measurable paths of breathing and draining
devices
Annex C (normative) - Additional requirements for flameproof
entry devices
Annex D (normative) - Empty flameproof enclosures as Ex
components
Annex E (normative) - Cells and batteries used in flameproof
'd' enclosures
Annex F (informative) - Mechanical properties for screws
and nuts
Annex G (normative) - Additional requirements for flameproof
enclosures with an internal source of release
(containment system)
Annex H (normative) - Requirements for machines with
flameproof 'd' enclosures fed from converters
Bibliography
Includes specific requirements for the construction and testing of electrical equipment with the type of protection flameproof enclosure 'd', intended for use in explosive gas atmospheres.
| Document Type | Standard |
| Status | Current |
| Publisher | International Electrotechnical Committee |
| Committee | TC 31 |
