UL 583-2012 pdf download
UL 583-2012 pdf download.Electric-Battery-Powered Industrial Trucks.
54 Motors
54.1 A motor shall comply with the requirements in the Standard for Electric Motors and Generators for Use in Division I Hazardous (Classified) Locations. UL 674. No belt drive shall be provided with the motor unless the belts are of electrically conductive material or are enclosed in accordance wIth 53.3. There shall be no slippage of the belt that may cause temperature rises that could ignite combustible dusts.
54.1 elective August IS, 2017
55 Battery
55.1 Ignition of dust by the battery shall be prevented by either Inert gas under pressure In the battery case or by having the current-carrying parts of the battery insulated or protected against possible contact with foreign objects when the cover is closed.
56 Exterior-Surface Temperatures
56.1 Exterior-surface temperatures on all parts — such as a motor casing, a control casing, a resistor casing, brakes. etc. — shall not exceed the maximum acceptable temperatures for Class II, Group G dust-air mixtures, based on a 40°C (104°F) ambient temperature, under any conditions at operation during the tests described in General. Section 57. Maximum acceptable temperatures under normal and abnormal conditions of operation when equipment — including the brakes and enclosures, control equipment, resistors, etc. — is blanketed with dust or is clean are 165°C (329°F). Heat-actuated devices may be used to disconnect circuits before temperatures exceed 165°C (329°F).
PERFORMANCE
57 General
57.1 A Type EX truck for use in Class II, Group G hazardous locations, shall comply with the performance requirements specified In 39,1 for Type EE trucks and with the performance requirements in General, Section 50. In addition, the tests described in 57.1 — 57,4 shall be conducted.
57.2 Dust-ignition-proof electrical components shall comply with the test requirements in the Standard for Explosion-Proof and Dust-Ignition-Proof Electrical Equipment for Use in Hazardous (Classified) Locations, UL 1203.
57.2 effective August 15, 2017
57.3 Intrinsically safe electrical components shall comply with the test requirements in the Standard for Intrinsically Safe Apparatus and Associated Apparatus for Use in Class I, II and Ill, DivIsion 1, Hazardous
(Classified) Locations. UL 913.
57.3 eflectre August 15, 2017
57.4 Maximum operating temperatures on all electrical components shall be determined in accordance with 57.2 and 57.3 as appi’opriate. Maximum operating temperature on other parts, such as brakes shall be determined under both normal and abnormal operating conditions with a dust blanket under the test conditions specified in Section 44 of UL 1203. The maximum allowable temperature is 165°C. The temperature shall be marked as required by 59.1(i).
58.2 A schematic or pictorial Circuit-wiring diagram shall be furnished with each truck.
58.3 In addition to the markings specified in 58.1 and 58.2, a Type EX industrial truck for use Class II, Group G hazardous locations shall be marked as specified in 52.3.
TYPE ES TRUCKS
CONSTRUCTION
59 General
59.1 A type ES truck shall comply with the construction requirements for a Type E truck. See Sections 8 -20.
Exception: A Type ES truck shall riot be powered by fuel cells.
59.1 revised Febuary 24. 2014
PERFORMANCE
60 General
60.1 A Type ES truck shall comply with the performance requirements specified in Sections 21 — 27 for a Type E truck modified as indicated in 60.2; except that the use of a switching device to disconnect the battery circuit shall not be cause fcw waiving the burnout test. See 60.3.
60.2 During all of the performance tests, loosely packed cotton is to be placed around all unenclosed resistors and all electrical components that are likely to cause sparks or emit molten metal, If such components are partially enclosed, the cotton is to be placed around the openings in the enclosures. If such components are totally enclosed, the cotton is not required.
60.3 If a Type ES truck employs a solid-state speed control and such a control, Including all solid-state components, is not totally enclosed, the tests required by Temperature. Section 22 shall be repeated with the full speed — shorting — coritactor. if provided, of the solid-state control disabled so that sudi contactor does not shunt the solid-state portion of the control. If provided with an adjustable current-limiting feature, the adjustment is to be set at the maximum position for these tests unless such adjustment feature is sealed at the factory. The temperature limits specified in 22.4 are applicable. This test may be conducted immediately after the tests described in temperature, Section 22 have been concluded while the truck is at full operating temperature in which case constant temperatures usually are reached in not more than 3 hours.
