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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
# `/ }) |- l% E! ?算不算合格,标准原话如下 W% [% T m A5 I9 ~3 ^# {
a) A risk of injury due to an energy hazard exists if it is likely that two or more bare
, V* M5 T# n% M9 f$ \* T$ ^# k7 c" s9 Qparts (one of which may be earthed) between which a HAZARDOUS ENERGY LEVEL exists,
+ y$ y1 y# b/ ?will be bridged by a metallic object.2 N" O* n8 `' M+ j) V( V
b) The likelihood of bridging the parts under consideration is determined by means of
5 d' G, D& f) q. P6 ~the test finger, Figure 2A (see 2.1.1.1), in a straight position. It shall not be possible to
0 p" }6 h7 l# D. _bridge the parts with this test finger, applied without appreciable force.
& D; e/ X. J7 o4 dc) The existence of a HAZARDOUS ENERGY LEVEL is determined as follows:+ ^, \0 u/ z) w, s) j
1) with the equipment operating under normal operating conditions, a variable
8 Z7 z/ O( g \4 y1 j+ J2 J0 Gresistive load is connected to the parts under consideration and adjusted to1 \% p% a& J8 V
obtain a level of 240 VA. Further adjustment is made, if necessary, to
. N: G# i4 O7 O4 K* Y8 z! i u- omaintain 240 VA for a period of 60 s. If the voltage is 2 V or more, the output
8 x& _) X9 s7 ~" }) Epower is at a HAZARDOUS ENERGY LEVEL, unless an overcurrent protective device: ~, J* C" b; _: n' b
opens during the above test, or for any other reason the power cannot be
! c l# D- O1 w3 Tmaintained at 240 VA for 60 s;$ g* S, s. E: U0 O( G
2) the stored energy in a capacitor is at a HAZARDOUS ENERGY LEVEL if the; |' n5 t A7 i4 L; W3 V
voltage, U, is 2 V or more, and the stored energy, E, calculated from the
; |8 D. Z8 ]7 d4 R2 p* [% ofollowing equation, exceeds 20 J: |
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发表于 2010-8-6 14:13
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