UL 1340 STANDARD FOR SAFETY Hoists
1 Scope
1.1 These requirements cover hoists of the overhead type intended for material lifting service usingeither chain, wire rope, or fibre kernmantle rope.They are intended to be suspended from a fixed memberand may include trolleys for mobility.
1.2This standard covers electrically powered hoists rated 1000 volts or less to be employed innonhazardous environmental locations in accordance with the National Electrical Code,NFPA 70.
1.3 This standard covers pneumatically powered hoists.
1.4 These requirements do not cover:
a)Manual and power-operated type portable hoists intended for use with scaffolds suspended bywire ropes;
b) Hoists for transporting people;
c) Manual operated chain hoists;
d) The trolley as a stand-alone component; ore) The fixed member that suspends the hoist.
2General
2.1Components
2.1.1 Except as indicated in 2.1.2, a component of a product covered by this standard shall comply withthe requirements for that component.See Appendix A for a list of standards covering components used inthe products covered by this standard.
2.1.2 A component is not required to comply with a specific requirement that:
a) Involves a feature or characteristic not required in the application of the component in theproduct covered by this standard, or
b) ls superseded by a requirement in this standard.
2.1.3 A component shall be used in accordance with its rating established for the intended conditions ofuse.文章源自标准下载网-https://www.biao-zhun.cn/119211.html
