ul82,安规.doc

PART 1- ALL GARDENING APPLIANCES 所有的园林工具 CONSTRUCTION 结构 5 Frames and Enclosures 结构和外壳 General 概述 The frame and enclosure of an appliance shall have the strength and rigidity necessary to resist the abuses to which it is likely to be subjected during normal service without total or partial collapse resulting ina risk of fire, electric shock, or injury to persons due to reduction of spacings, loosening or displacement of parts, and other serious defects. 结构和外壳要有一定的强度和刚度去抵抗不正常使用可能情况,由于间距的减小, 部件的松动或移位或其他缺陷产生起火,电击,对人伤害的危险。 Among the factors taken into consideration when judging the acceptability of a frame or enclosure are its: 考虑判定结构或外壳的可接受性的因素有: a) Mechanical strength; 机械强度 b) Resistance to impact; 抗冲击度 c) Moisture-absorptive properties; 吸潮特性 d) Combustibility and resistance to ignition from electrical sources; 可燃性和电源处的抗燃性 e) Resistance to corrosion; 抗腐蚀性 f) Resistance to distortion at temperatures to which the enclosure may be subjected under conditions of normal or abnormal use; and 外壳在正常或非正常使用的温度情况下,抗击变形度 g) Dielectric properties, insulation resistance, and resistance to arc tracking. A material that will be exposed to oil, acids, solvents, reagents, cleaning agents, or ozone as part of the use or application of the appliance shall not be adversely affected by these environments, as determined by tests. 绝缘特性,绝缘抗阻,抗击电弧轨迹。暴露在油,酸,溶剂,试剂,清洗物或作为使用一部分的臭氧不能对这些环境造成不利的影响,根据测试要求。 Metallic enclosures 金属外壳 The thickness of cast- and sheet-metal portions of an enclosure shall not be less than the applicable value specified in Table . 外壳金属片的厚度不能小于表 中适用的值。 Exception: The specifications in Table do not apply to an enclosure found to be acceptable when judged under the considerations mentioned in . 例外:表 中的规格不适用于 中提到的可接受的外壳。 6 Polymeric Enclosures 聚合物罩壳 An enclosure formed of polymeric material shall either: 由聚合物组成的罩壳: a) Comply with the requirements for Materials not Classed HB, Section 43; or b) Be classed HB in accordance wit