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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
- R: k5 f C. S( x! d算不算合格,标准原话如下
5 c, \# K5 K6 y. Za) A risk of injury due to an energy hazard exists if it is likely that two or more bare t/ k8 f. d6 M
parts (one of which may be earthed) between which a HAZARDOUS ENERGY LEVEL exists,0 S( M3 b! `( i7 ?1 e, i! j
will be bridged by a metallic object.& p. v. M8 b0 g% ]" A5 Q3 @
b) The likelihood of bridging the parts under consideration is determined by means of3 j% P2 r5 M# l% b/ y$ J
the test finger, Figure 2A (see 2.1.1.1), in a straight position. It shall not be possible to; e( q. H. k& Z, |
bridge the parts with this test finger, applied without appreciable force.0 Y0 O S }; J3 g: w
c) The existence of a HAZARDOUS ENERGY LEVEL is determined as follows:
1 K' m; Z% Z, a( _' E, |1) with the equipment operating under normal operating conditions, a variable/ A1 T7 y: w+ a1 v8 ]( j( w
resistive load is connected to the parts under consideration and adjusted to7 O$ c0 r9 g% F- z
obtain a level of 240 VA. Further adjustment is made, if necessary, to
8 ] a# X( q2 T, n) m4 Bmaintain 240 VA for a period of 60 s. If the voltage is 2 V or more, the output
- J7 s. x9 I, @9 e! {6 I9 U) Q# J; q) npower is at a HAZARDOUS ENERGY LEVEL, unless an overcurrent protective device( d" Y6 u! u: ?6 {: G
opens during the above test, or for any other reason the power cannot be6 D. C1 {- B3 F* {/ j$ Z5 K! \4 J
maintained at 240 VA for 60 s;
6 g( f2 ^+ x e4 u d! X9 s2) the stored energy in a capacitor is at a HAZARDOUS ENERGY LEVEL if the
( [: h& b: T t" C$ Y8 tvoltage, U, is 2 V or more, and the stored energy, E, calculated from the" q: O. f% g1 R6 y1 H5 Y" D( P; A
following equation, exceeds 20 J: |
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