抽油烟机培训资料课件.ppt

触电危险;
防火危险
过热危险
机械危险
爆炸危险
辐射危险
其他危险
※ part 1 结构评估
UL安全认证考虑的因素
2020/12/23
1
抽油烟机培训资料专业版
CONSTRUCTION
6 Frame and Enclosures
General
An appliance shall be formed and assembled so that it has the strength and rigidity necessary to
resist the abuses to which it is subjected, without causing a risk of fire, electrical shock, or injury to
persons due to total or partial collapse with a resulting reduction of spacings, loosening or displacement
of parts, or other serious defects.
A cast- or sheet-metal section of the enclosure shall not be thinner than the applicable value
specified in Table .
Exception No. 1: A small area or surface that is curved or otherwise reinforced to provide equivalent
mechanical strength is not required to comply with the specifications in the first column of thicknesses in
Table .
Exception No. 2: A section of the enclosure made of uncoated or galvanized sheet steel or cast malleable
iron shall not be thinner than the specifications in the first column of thicknesses in Table unless such
factors as the following are determined to be acceptable:
※ part 1 结构评估
外壳基本要求
2020/12/23
2
抽油烟机培训资料专业版
Polymeric material used to enclose a metal housing that encloses
insulated or uninsulated live parts, or used as a decorative part, shall be
classed either 5VA, 5VB, V-0, V-1, V-2, or HB by the burning
tests described in the Standard for Tests for Flammability of Plastic Materials
for Parts in Devices and
Appliances, UL 94.
PCB板盒的外壳胶料需UL认证，最少ＨＢ级别
6 Non-metallic parts other than enclosures
PCB的要求
2020/12/23
3
抽油烟机培训资料专业版
Flame Spread and Smoke Developed Requirements
for Non-Metallic Enclosures and Other
Parts of Permanently Connected Equipment
(not applicable)
Clause 7
外壳塑胶材料的要求
2020/12/23
4
抽油烟机培训资料专业版
Clause 8
产品安装后，测试棒不能通过吸油烟的口及其他外部孔触及运动部件．
mm时，