This standard specified terminologies and definitions, classifications and groups, basic parameters, structural types and models, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of explosion-proof hoists.
This standard is applicable to explosion-proof electric hoist (hereinafter referred to as “explosion-proof hoist”) operating in Zone 1 and Zone 2 of explosive gas atmosphere, and/or Zone 21 and Zone 22 of combustible dust atmosphere.
Foreword ii
1 Scope
2 Normative References
3 Terminologies and Definitions
4 Classifications and Groups
4.1 General
4.2 Classifications
4.3 Temperature group
4.4 Types and marks of explosion prevention
5 Basic Parameters, Structural Type and Model
5.1 Basic parameters
5.2 Structural type of explosion-proof hoists
5.3 Expression method for the model of explosion-proof hoists
6 Technical Requirements
6.1 Basic requirements:
6.2 Environmental conditions
6.3 Materials
6.4 Requirements for anti-explosion of electrical apparatus
6.5 Explosion-proof requirements for machinery
7 Test Methods
8 Inspection Rules
8.1 General
8.2 End-of-manufacturing inspection
8.3 Type test
8.4 Service life test
9 Marking, Packaging, Transportation and Storage
9.1 Marking of explosion-proof hoists
9.2 Packaging, transportation and storage
Figure 1 Fixed Explosion-proof Loop Chain Electric Hoists
Figure 2 Explosion-proof Loop Chain Electric Hoists of Monorail Trolley Type
Figure 3 Explosion-proof Loop Chain Electric Hoists of Double-Beam Trolley Type
Figure 4 Fixed Explosion-proof Steel Wire Rope Electric Hoists
Figure 5 Explosion-proof Steel Wire Rope Electric Hoists of Straight Monorail Trolley Type
Figure 6 Explosion-proof Steel Wire Rope Electric Hoists of Curve Monorail Trolley Type
Figure 7 Explosion-proof Steel Wire Rope Electric Hoists of Double-Beam Trolley Type
Figure 8 Explosion-proof Steel Wire Rope Electric Hoists of Single Girder Angular Trolley Type
