UL 1340-2021 pdf download

UL 1340-2021 pdf download.Hoists.
2.3 Undated references 2.3.1 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. 3 Glossary 3.1 For the purpose of this standard the following definitions apply. 3.2 BONDED (BONDING) – The permanent joining of metallic parts to form an electrically conductive path that provides electrical continuity and the capacity to conduct any current likely to be imposed without a risk of electric shock, fire, or injury to persons. 3.3 BONDING JUMPER – A conductor, including a strap or similar part, that is used to provide the required electrical conductivity between metal parts required to be electrically connected. 3.4 CIRCUITS, ELECTRICAL – a) High-Voltage – A circuit with a potential of not more than 1000 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) An NEC 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.
3.5 FIBRE KERNMANTLE ROPE – A rope design consisting of an interior core and an outer sheath. 3.6 GROUND – A conducting connection, whether intentional or accidental, between an electrical circuit or equipment and the earth or to some conducting body that serves in place of the earth. 3.7 GROUNDED – Connected to earth or to some conducting body that serves in place of earth. 3.8 GROUNDING CONDUCTOR – An equipment or circuit conductor that is intentionally connected between that electrical circuit or equipment and the earth or to some conducting body that serves in place of the earth. 3.9 HOIST – A suspended machinery unit that is used for lifting or lowering a freely suspended (unguided) load. When a hoist is suspended from a trolley, the trolley shall be considered part of the hoist. a) ELECTRICALLY POWERED – A hoist in which the prime mover is powered by electricity. b) PNEUMATICALLY POWERED – A hoist in which the prime mover is powered by compressed gases.
4 General 4.1 A product shall be constructed so that it will have the strength and durability to withstand normal usage and to comply with the performance requirements. 4.2 An exposed metal surface shall be free from sharp edges, burrs, and other features that constitute a risk of injury to persons. 5 Materials and Assembly 5.1 All metal parts and fittings shall be made of aluminum or steel alloys, wrought iron, malleable iron, or other metal that is of equivalent strength for the intended purpose and shall be securely attached by means of rivets, bolts, screws, or other means determined to be the equivalent. Cast gray iron shall not be used for load-carrying parts. 5.2 Nuts shall be lock nuts or provided with lock washers. 5.3 For a hoist that is designed to operate using a fibre kernmantle rope, the rope shall be a static type in compliance with the requirements in Low Stretch and Static Kernmantle Life Safety Rope, CI 1801. 6 Protection Against Corrosion 6.1 All hardware and materials shall be resistant to normal atmospheric corrosion. Exception: Aluminum, brass, copper, stainless steel, or other metal inherently resistant to corrosion may be used without additional protection. 6.2 Corrosion protection shall be by metallic or nonmetallic coatings, such as galvanizing, sherardizing, plating, or painting. 6.3 Different metals shall not be used in combination such as to cause galvanic action that will adversely affect the strength of the product.UL 1340-2021 pdf download.