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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% ], V& ?" f6 {, i. V) T9 [
算不算合格,标准原话如下
}0 H) z, L9 R5 n' W0 N- V. F. ya) A risk of injury due to an energy hazard exists if it is likely that two or more bare" ]4 Q, ]. i& e( b5 ?5 `
parts (one of which may be earthed) between which a HAZARDOUS ENERGY LEVEL exists,
3 j5 D6 d% c" v% Mwill be bridged by a metallic object.
) b6 ~" f; D' c' Cb) The likelihood of bridging the parts under consideration is determined by means of% Z9 q" a X# }; d( o3 L
the test finger, Figure 2A (see 2.1.1.1), in a straight position. It shall not be possible to
! I' s I; ]0 ~# Abridge the parts with this test finger, applied without appreciable force.
; R0 I! G3 ^5 e/ U O2 H2 Mc) The existence of a HAZARDOUS ENERGY LEVEL is determined as follows:# B. W; Y% v1 B! e9 M; J
1) with the equipment operating under normal operating conditions, a variable
. C- `1 I7 o0 E% v: F- Q% Uresistive load is connected to the parts under consideration and adjusted to! X. E: {, _" y- E5 O' N
obtain a level of 240 VA. Further adjustment is made, if necessary, to
& `6 ~- Y2 c8 W/ r8 ~. G5 k6 Tmaintain 240 VA for a period of 60 s. If the voltage is 2 V or more, the output
' z! [& {2 O; l# N* L0 K6 ^8 H) f! w wpower is at a HAZARDOUS ENERGY LEVEL, unless an overcurrent protective device
% h/ s% |' r4 q. ?opens during the above test, or for any other reason the power cannot be, Q$ j: i& @$ n3 Z2 r: K( \2 \( T) g
maintained at 240 VA for 60 s;* `9 R8 W- p r& J8 N) G2 U5 |
2) the stored energy in a capacitor is at a HAZARDOUS ENERGY LEVEL if the5 l- B* p$ k; k5 K
voltage, U, is 2 V or more, and the stored energy, E, calculated from the. G3 D+ U! v: V
following equation, exceeds 20 J: |
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