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我英语比较一般,关于IEC60335-2-2 3.19节的全开全闭功率有点无法理解啊,8 X: x0 {& W- Z; F. Z
Pf is the power input in watts, after 3 min of operation with the air inlet unobstructed. Any
+ B9 E& v [8 J) ydevice that ensures a flow of air to cool the motor in the event of a blockage of the main$ D2 }7 V4 {6 b/ b; j& u6 m7 S
air inlet is allowed to operate;
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Pi is the power input in watts, after a further 20 s of operation with the air inlet blocked. Any/ s2 B* `. o/ N- j% E W
device that is adjustable without the aid of a tool, and which ensures a flow of air to cool$ }+ R; Z7 k7 W6 D- ]( F
the motor in the event of a blockage of a main air inlet, is rendered inoperative.
3 H$ C- e$ Z% L0 L2 V! D关于里面提供冷却风的装置是否允许打开,Pf时说吸口闭合时该装置允许打开,Pi时说吸口闭合时不允许打开。
) ~9 R. G) b1 v* l+ y疑问1:测风口全开时的功率为什么还有吸口闭合的状态?" W# M0 F" p8 B
疑问2:Pf和Pi时提到的这两个冷却装置是否是同一个?1 O& B E6 w, m$ l+ z" H
看GB4706.7时更加不知所云啊 |
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