UL507吊扇扇叶负重如何测试

kennykkou · 发表于 2022-2-9 14:46

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UL507吊扇的扇叶负重如何测试

那一章节有说明

谢谢!

丁树文 · 发表于 2022-2-10 15:20

UL 507 第91章条款 91.4.1里面有描述

kennykkou · 发表于 2022-2-15 17:48

本帖最后由 kennykkou 于 2022-2-15 18:53 编辑

丁树文发表于 2022-2-10 15:20" h) m9 ^# I( d8 [8 l, q9 G: Z
UL 507 第91章条款 91.4.1里面有描述

丁先生

非常非常谢谢

再确认新版UL507

没错是

91.4 Fan blade brackets

91.4.1 Static load test for ceiling-suspended fan blade brackets

91.4.1.1 A blade bracket to be used on a ceiling-suspended fan shall besubjected to the static load testdescribed in 91.4.1.2. As a result of theload, the bracket shall have no cracks as determined by visualinspection with a4-power magnifying glass.

91.4.1.2 The mounting feet of the blade bracket are to be fixed by a support,vise, or other securingmeans. The bracket is to be oriented as intended foractual use as illustrated in Figure 91.2. After securing

the bracket mounting feet, a crossbar is to be secured across the top ofthe two outermost blade mountingholes. The load is to be suspended from the centerof the crossbar for one minute as illustrated in Figure

91.2. The combined weight of the crossbar, load, and means of load suspensionis to be in accordancewith Table 91.1.

Exception: Ifthe blade bracket construction is such that it is integral to the motorenclosure and attachedto the overall motor assembly upon shipment, the bladebrackets/motor enclosure can remain attached tothe motor assembly during testing.

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