UL医疗插头，张力缓冲测试一直过不了
哎，怎么个问题呢，搞不懂啊，有大神吗UL医疗插头，张力缓冲测试?测试规范呢？ jjlamshushushu 发表于 2014-5-30 18:05 static/image/common/back.gif
UL医疗插头，张力缓冲测试?测试规范呢？
109 Strain Relief Tests
109.1 General
109.1.1 After being subjected to the strain relief tests described in this section, there shall not be any
displacement of the conductors, conductor insulation, or outer jacket of the flexible cord exceeding 1/32
inch (0.8 mm). There shall not be any cuts, rips, or tears in the cord insulation nor any breakage of the
attachment plug that could adversely affect the enclosure of live parts, strain relief, or grounding path
integrity.
109.2 Method A – Static pull
109.2.1 Each of six representative attachment plugs molded onto flexible cord, without the conductors
terminated to the blades or grounding pin, shall be subjected to a gradually applied pull of 30 lbf (133 N)
to the free end of the cord while the attachment plug is securely supported. The force shall be applied for
1 minute in a direction perpendicular to the plane of cord entry.
109.3 Method B – Rotary pull
109.3.1 Each of six representative attachment plugs molded onto flexible cord, without the conductors
terminated to the blades or grounding pin, shall be subjected to a rotary cord motion while a force of 10
lbf (44.5 N) is applied for 2 hours. The cord is to be rotated at a rate of approximately 9 r/min in a 3 inch
diameter (76 mm) circle at a point 6 inches (152 mm) below the cord exit with the attachment plug rigidly
mounted. (Note – This test is conveniently done with UL secureness test apparatus described in the
Standard for Wire Connectors and Soldering Lugs for Use With Copper Conductors, UL 486A, or in the
Standard for Wire Connectors for Use With Aluminum Conductors, UL 486B.) jjlamshushushu 发表于 2014-5-30 18:05 static/image/common/back.gif
UL医疗插头，张力缓冲测试?测试规范呢？
109页的，我们是铜丝位移过不了
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