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