UL 2344:2017-07 Material Lifts.
1.1 These requirements cover manually, electrically and pneumatically powered lifts. They are intended for the lifting and transport of materials and not for the movement or support of people. They are rated 250 volts or less, to be employed in nonhazardous environmental locations in accordance with the National Electrical Code, NFPA 70.
1.2 This standard does not apply to the following equipment:
a) Permanently installed material lifts, serving specific levels of a building and/or fitted with a car;
b) Power operated lifting platforms for persons with impaired mobility;
C) Mobile elevating work platforms;
d) Vehicle lifts (for maintenance); and
e) Powered forklift trucks. 2 Components
2.1 Except as indicated in 2.2, a component of a product covered by this Standard shall comply with the requirements for that component. See Appendix A for a list of Standards under which components are evaluated.
2.2 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 the product covered by this standard, or
b) Is superseded by a requirement in this standard.
2.3 A component shall be used in accordance with its rating established for the intended conditions of use.
2.4 Specific components are incomplete in construction features or restricted in performance capabilities. Such components are intended for use only under limited conditions, such as certain temperatures not exceeding specified limits, and shall be used only under those specific conditions.
3 Undated References
3.1 Any undated reference to a code or standard appearing in the requirements of this standard shall be
interpreted as referring to the latest edition of that code or standard.
4 Units of Measurement
4.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory or
5.1 For the purpose of this standard the following definitions apply.
5.2 CIRCUITS, ELECTRICAL:
a) High-Voltage — A circuit with a potential of not more than 600 volts having circuit characteristics greater than those of a low-voltage power-limited circuit.
b) Low-Voltage — A circuit with a potential of not more than 30 volts AC rms, 42.4 volts DC or AC peak, and supplied by:
1) A primary battery;
2) A Class 2 transformer; or
3) A combination of transformer and fixed impedance that, as a unit, complies with all of the performance requirements for a Class 2 transformer.
5.3 DRUM, TRACTION — A type of drum that does not accumulate the suspension rope, but ascends or descends the rope as a result of friction between the rope and the drum.
5.4 DRUM, TRANSFER — A drum used to transfer the suspension wire rope from one groove to another groove on the traction drum of a traction lift.
5.5 DRUM, WINDING — A drum that accumulates the suspension rope in one or more layers.
5.6 ELECTRIC SHOCK — A risk of electric shock is considered to exist at any exposed part when the available open-circuit potential is more than 42.4 volts peak, 30 volts rms, and the available current through a 1500-ohm resistor is more than 5 milliamperes.UL 2344 pdf download.