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各位高手 下面这个是什么意思啊？ 牛人站出来，讨教下
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V% M( w7 V5 k# l m71.2 Power-supply cord
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71.2.1 When tested in accordance with 71.2.2, the strain relief means provided on the flexible cord shall withstand for 1 minute, without displacement, a pull of 35 pounds-force (156 N) applied to the cord with the connections within the alarm disconnected./ N' `+ J4 V% ~& T2 t
) B: u' |# e! r71.2.2 A 35 pound-mass (15.9kg) weight is to be suspended on the cord and supported by the alarm so that the strain relief means are stressed from any angle that the construction of the alarm pemits. The strain relief does not comply when, at the point of disconnection of the conductors, there is such movement of the cord as to indicate that stress has resulted on the connections.# r9 ?0 u1 P$ @- A( j
& U$ W( P$ U4 g$ e3 j71.3 Field-wiring leads. {) a! K' e* {
71.3.1 each lead employed for field connections, including a battery clip lead assembly, shall withstand for 1 minute a pull of 10 pounds-froce (44.5N) without any evidence of damage or of transmittal of stress to internal connections. A connector used in the lead assembly shall withstand a pull of 5 pounds-force (22.3N) without any evidence of damage, transmittal of stress to internal connections, or separation. |
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发表于 2009-8-13 15:13
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