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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 K" T! @; j# d# c2 F; {
Pf is the power input in watts, after 3 min of operation with the air inlet unobstructed. Any
$ E! y$ l0 a( g$ g: Gdevice that ensures a flow of air to cool the motor in the event of a blockage of the main
2 F/ C0 `/ G+ S) V/ N; m2 tair inlet is allowed to operate;, l8 t9 v" ^2 }! d2 g( C
* P7 \: e! w/ x6 R b' j& n- uPi is the power input in watts, after a further 20 s of operation with the air inlet blocked. Any
2 `* r6 X- y+ O4 _* tdevice that is adjustable without the aid of a tool, and which ensures a flow of air to cool
5 H. o4 o$ N3 F, U9 n9 }5 u- J$ vthe motor in the event of a blockage of a main air inlet, is rendered inoperative./ ^; P) N, w0 Z8 m
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。
3 A! [3 o/ {. u疑问1:测风口全开时的功率为什么还有吸口闭合的状态?
7 g+ E& x8 K0 B$ P疑问2:Pf和Pi时提到的这两个冷却装置是否是同一个?
4 F1 M' V0 {# {看GB4706.7时更加不知所云啊 |
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