标题: 测试手指能碰到次级的安全端子,符合60950要求吗 [打印本页] 作者: 琥珀流云 时间: 2010-8-6 14:13 标题: 测试手指能碰到次级的安全端子,符合60950要求吗 我有一个电源,次级输出端子通过了能量危险测试,但是能用测试手指碰到里面的端子的正负两级6 N* Q5 J M0 b0 L. p9 v5 R- o3 t
算不算合格,标准原话如下+ y4 C: R8 B! x3 f
a) A risk of injury due to an energy hazard exists if it is likely that two or more bare+ T# v2 L0 K. q
parts (one of which may be earthed) between which a HAZARDOUS ENERGY LEVEL exists,& Y, u: \- ?; c1 U. V, k2 ]9 ]
will be bridged by a metallic object.% h& O7 {' j' g) S$ i* C4 R
b) The likelihood of bridging the parts under consideration is determined by means of % O: P5 ?! l) l3 ~4 ]the test finger, Figure 2A (see 2.1.1.1), in a straight position. It shall not be possible to/ k8 q' s! ? R4 a) F; t
bridge the parts with this test finger, applied without appreciable force.) m L) Q" {; }% d7 Y
c) The existence of a HAZARDOUS ENERGY LEVEL is determined as follows: + | V: X4 }( Y6 ]1 N. l t9 I1) with the equipment operating under normal operating conditions, a variable8 l" j+ ^5 e5 n7 x% `
resistive load is connected to the parts under consideration and adjusted to ( ~. O9 Z3 @* B6 W6 Fobtain a level of 240 VA. Further adjustment is made, if necessary, to% Y* l, j7 [" e% O) y& ~ i; E3 f/ [
maintain 240 VA for a period of 60 s. If the voltage is 2 V or more, the output( W$ u1 T& j& s P7 Q
power is at a HAZARDOUS ENERGY LEVEL, unless an overcurrent protective device7 W5 o+ h- C* M+ S
opens during the above test, or for any other reason the power cannot be - x3 h( Z, e1 Ymaintained at 240 VA for 60 s;! Q8 h! P4 J' G! q* V
2) the stored energy in a capacitor is at a HAZARDOUS ENERGY LEVEL if the ! j" f& {( _$ B+ _. @" v; F. ]2 xvoltage, U, is 2 V or more, and the stored energy, E, calculated from the. m6 H) V. r, W5 Q! D5 C
following equation, exceeds 20 J:作者: yw_shi 时间: 2010-8-6 14:31
安全!作者: cylam128 时间: 2010-8-7 08:35
可以的作者: yuqijun 时间: 2010-8-9 11:08
只是碰到安全端子是没事的，假如有碰到危险元件的话，那应该把危险元件包起来作者: nickchenxie 时间: 2013-5-16 14:41
標準中的2V如何理解？