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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,
* `/ X# V, a, J- z* {/ N; e% i: xPf is the power input in watts, after 3 min of operation with the air inlet unobstructed. Any
$ r$ @# Q+ f) |+ k% kdevice that ensures a flow of air to cool the motor in the event of a blockage of the main
* F+ x5 W. v. t0 @$ Iair inlet is allowed to operate;) j7 C- P1 g+ L6 C+ a' |! \8 l
/ c; q- q+ @% P, w0 a# n2 dPi is the power input in watts, after a further 20 s of operation with the air inlet blocked. Any
, E, S, x9 F, H- E0 ?% Zdevice that is adjustable without the aid of a tool, and which ensures a flow of air to cool+ @7 B. y$ d0 {7 ]. e4 Q1 ]
the motor in the event of a blockage of a main air inlet, is rendered inoperative./ r6 g& x" H7 M% z8 j8 L
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。; f' r8 j6 x9 j# z
疑问1:测风口全开时的功率为什么还有吸口闭合的状态?
1 V0 X0 O+ e5 Z. V' [7 i疑问2:Pf和Pi时提到的这两个冷却装置是否是同一个?( U( M3 J1 K t6 g% `( r" q
看GB4706.7时更加不知所云啊 |
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