标题: UL1598灯具问题 [打印本页] 作者: macro 时间: 2012-1-18 19:02 标题: UL1598灯具问题 请问各位:
UL1598中有一项自攻螺钉扭矩测试,一般指哪种灯具哪个部位的自攻螺钉,具体怎么操作作者: macro 时间: 2012-1-18 19:02
怎么没有人回应呀作者: voculy 时间: 2012-1-18 19:03
更换光源时,或安装,或维护、修理时要拆开的,都要进行
IEC标准里是这样的,UL不是很熟悉作者: fangzi33 时间: 2012-1-18 19:03
大多是用于固定安装挂板的用于把灯固定在壁上的,美洲等国家不适用,只是国内及欧洲等地方用的多作者: 你所额抵抗 时间: 2012-1-18 19:03
其实在安规认证时,这类测试一般是不做的。作者: 民前八方 时间: 2012-1-18 19:03
如果是欧规的灯具做的特别多。特别是地灯和台灯。下面的压线夹带的自功螺丝就要扭力测试作者: feazhp 时间: 2012-1-18 19:03
自攻螺丝扭力测试(self-threading screw torque test):
1。测试对象
5.10.2 Self-threading screws, including sheet-metal screws, used to secure electrical or enclosure component parts in place or together, shall comply with the self-threading screw torque test in Clause 16.14, when the screw threads into nonferrous metal or polymeric material.
当自螺纹螺丝和铁板牙螺丝用来固定电气或外壳部件在一起时,且这些螺丝是拧入非铁金属或聚合物材料时,这些螺丝就要符合这个测试要求;
5.10.3 A self-threading or sheet metal screw used for mounting or supporting a part that weighs more than 3.4 kg (7.5 lb) per screw shall comply with the self-threading screw torque test in Clause 16.14.
当自螺纹螺丝或铁板牙螺丝用来安装或支撑重量超过每个螺丝3.4kg时,这些螺丝就要符合这个测试要求;
2.测试的方法。
16.14.1 Self-threading or sheet metal screws may be used if threads are not stripped when the screw is tightened with a torque of 3.39 N·m (30 lb·in) and if the part or the assembly supported by the screw withstands for 1 min a force equal to four times the mass of the part or assembly, applied in a direction coincident with the axis of the screw.
测试方法: 用3.39N.m(30lb.in)的扭力扭紧螺丝, 并在装配表面的螺丝轴向施加于四倍于装配物重量, 螺蚊应不受破坏。