chen20087576 发表于 2018-8-2 09:37

UL859的发夹类42.1~44测试相关事宜

大家好,请教下!UL859 第42.1 Cord Flexing Test 中的转尾1000次摇摆,在42.3里说的对于转尾结构的电器,在42.2的测试时,让转尾锁定在其位置上(个人的理解应该是发夹可以转动540度来回,但转尾不应跟着转动);接着进行第44点的转尾寿命测试:44.2中也提到转尾结构需按42.2的方法进行100000次测试。这里的10万次测试应是不固定转尾进行测试的。
但我们现在有一家客户说这个1000次要把转尾固定起来进行测试,在经540旋转时,转尾跟着旋转。目前配套的扁线类型很多型号都过不了这个标准!不知道他们的这种测试方法是否就是安规要求?
望各位大神解释下。

chen20087576 发表于 2019-1-18 21:04

没人回应~~~自己顶下!

fasten 发表于 2019-1-19 09:39

42.3 For an appliance using a cord swivel construction, the test described in 42.2 is to be conducted with the swivel locked in place.
注意看文字细节啊。42.3是对42.2的补充,转尾在线上的才要锁死Swivel。其他的不需要。也就是说,42.3是42.2的一种特殊情况,特殊情况锁死,其他不锁死。
你现在的理解是全部锁死。。。。。。。

jjttjerry 发表于 2023-4-10 16:58

fasten 发表于 2019-1-19 09:39
42.3 For an appliance using a cord swivel construction, the test described in 42.2 is to be conducte ...

49.2 Each sample is to be mounted in a guide with a 1/4 pound (113 g) weight attached to the cord 8
inches (203 mm) from the cord entry hole so that the unit can be rotated 540 degrees about the axial
center of the cord. A typical arrangement is shown in Figure 49.1. The rate of flexing is to be 10 cycles
per minute, where 1 cycle is equivalent to three complete rotations as defined in Note (a) of Table 49.1,
resulting in a rotational speed of 30 rotations per minute. During the test, the supply cord conductors of
the sample are to carry current equal to the current rating of the appliance at rated voltage. The ″as
received″ samples are to be subjected to the number of cycles of flexing specified in Table 49.1. The
conditioned samples of a hand-supported hair-drying appliance are to be subjected to 1,000 cycles of
flexing.
Exception No. 1: With the concurrence of all concerned, the attached weight may be other than 1/4 pound,
adjusted such that the cord is held taut and the intended flexing action is produced.
Exception No. 2: With the concurrence of all concerned, the rate of rotation or cycle rate may be greater
than specified

这里只是描述测试方法,没说转尾在线上吧?

zyhua1985 发表于 2023-4-13 09:19

前来学习

ydqshy 发表于 2024-5-28 15:29

jjttjerry 发表于 2023-4-10 16:58
49.2 Each sample is to be mounted in a guide with a 1/4 pound (113 g) weight attached to the cord...

最近有研究这个标准吗?他一分钟10个循环的,有转尾就需要锁死,然后10万次的那个寿命测试就不用锁死,我现在纳闷的是锁死转尾的理由是啥,感觉不符合客人使用环境啊,如果是直接护线套还能理解

浪漫罗丹 发表于 2024-5-31 16:12

ydqshy 发表于 2024-5-28 15:29
最近有研究这个标准吗?他一分钟10个循环的,有转尾就需要锁死,然后10万次的那个寿命测试就不用锁死,我 ...

这里考虑的是转尾在一个固定位置没转动时的使用一定次数(或者转尾异常卡死,概率小)的情况

ydqshy 发表于 2024-6-1 13:54

浪漫罗丹 发表于 2024-5-31 16:12
这里考虑的是转尾在一个固定位置没转动时的使用一定次数(或者转尾异常卡死,概率小)的情况

我问了几个整机那边都很模糊,有说不需要做锁死测试的,只需要符合49.2中的三点要求就行,然后现在客人嘛一定要我做6000的,然后锁死的,怎么做都过不了

jtt1471025811 发表于 2024-6-28 14:32

前来学习
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