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根据标准2.1.1.5 Energy hazards中
9 _1 }# r* [: I6 Kc) The existence of a HAZARDOUS ENERGY LEVEL is determined as follows:- _/ N8 t6 _5 h
1) with the equipment operating under normal operating conditions, a variable resistive" W# N& T- x7 y i& c1 p
load is connected to the parts under consideration and adjusted to obtain a level of: c' b8 t" d- |' C4 o
240 VA. Further adjustment is made, if necessary, to maintain 240 VA for a period of$ a5 O! w7 j# \- P3 h
60 s. If the voltage is 2 V or more, the output power is at a HAZARDOUS ENERGY LEVEL,
" H; }1 P1 c: u( X/ K% Munless an overcurrent protective device opens during the above test, or for any other
" O. Q, h: U* T9 n0 }% mreason the power cannot be maintained at 240 VA for 60 s;
7 z1 j9 g, k5 c1 ~0 y
7 o6 M2 @' H6 |) ^+ _% M6 s为什么说电压是2V或更高，输出功率是处于危险能量等级？这个电压是指什么电压？为什么是2V？这段好像看不太懂，那位大侠指导下吧 |
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发表于 2011-3-1 13:15
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发表于 2011-3-1 13:28
我找了好久,也找不到支持這個詞"2V"定義的依據.