zdream_80 发表于 2008-8-18 11:15

UL 60601-1 中对于塑胶材料需要球击试验？

UL 60601-1 z中对于塑胶材料需要球击试验，为什么对于玻璃不需要考虑？

H-RH 发表于 2008-8-18 11:50

你是否指　UL 60601-2003   55DV.4.3?
有"对于玻璃不需要考虑"這種豁免嗎？

zdream_80 发表于 2008-8-18 13:36

对，是55 DV 4.3
标准是针对塑料材料，问UL工程师是考虑意外冲击，但为什么 玻璃就可以不考虑这种冲击呢？

H-RH 发表于 2008-8-18 13:56

這個問題確實很有趣! 我也很想知道！

另有一個問題想請教，就是一個插頭式電源供應器，用於 Medical equipment, 所以要符合　UL 60601, 由於這個插頭是插在牆上，可否不考虑这种冲击呢？

zdream_80 发表于 2008-8-18 15:30

插頭式電源供應器应该也是要考虑这种冲击的；我做过个手持式产品，当时UL工程师硬是让我在3个面都做了冲击试验

引用第3楼wongyatwah于2008-08-18 13:56发表的:
這個問題確實很有趣! 我也很想知道！

另有一個問題想請教，就是一個插頭式電源供應器，用於 Medical equipment, 所以要符合　UL 60601, 由於這個插頭是插在牆上，可否不考虑这种冲击呢？

H-RH 发表于 2008-8-18 23:45

謝謝你分享經驗!

ldsnet 发表于 2008-8-20 09:03

終於有找到類似的問題了.

zdream_80 发表于 2008-8-20 20:00

其实我是想找到标准仅仅针对塑料的由来

科学城 发表于 2008-10-5 21:49

It comes from UL 746C



55DV.4.1 In addition to the other requirements in this Standard, flammability, mechanical
abuse and mold stress tests shall be conducted. Polymeric ENCLOSURES and covers shall
comply with the requirements for resistance to impact and drop as indicated below, and
the requirements for mold stress release distortion, in the Standard for Polymeric Materials
- Use in Electrical Equipment Evaluations, UL 746C.

In UL 746C, the standards says

58.3 Each of three samples of the appliance shall be subjected to a single impact of the value shown in
Table 58.1 for the applicable equipment type, on any surface that can be exposed to a blow during
intended use. This impact is to be produced by dropping a steel sphere, 50.8 mm (2 inches) in diameter,
and weighing 0.535 kg (1 .I8 Ib) mass from the height necessary to produce the specified impact as shown
in Figure 58.2. The steel sphere shall strike the surface in a location different from those in the other two
impacts. For surfaces other than the top on an enclosure, either the sample could be supported on the
side and subjected to the ball impact mentioned above, or the steel sphere is to be suspended by a cord
and swung as a pendulum, dropping through the vertical distance necessary to cause it to strike the
surface with the specified impact as shown in Figure 58.2. Three samples shall be employed for the tests
in the equipment restrained mode. However, if the manufacturer so elects, fewer samples may be used
in accordance with Figure 58.1. The overall performance is acceptable upon completion of any one of the
sequences represented in Figure 58.1.

askhawk 发表于 2008-12-8 11:29

谢谢分享和贡献
页: [1] 2
查看完整版本: UL 60601-1 中对于塑胶材料需要球击试验？