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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,
' r% L+ p9 C" _: G0 Z7 Q; ?( p1 A9 o: lPf is the power input in watts, after 3 min of operation with the air inlet unobstructed. Any) j" J. G4 H) j, D
device that ensures a flow of air to cool the motor in the event of a blockage of the main( l, @9 ~0 v' p# O. G
air inlet is allowed to operate;) w& Y p: b# l! {, V; C
9 `. P8 ^! X x9 N+ nPi is the power input in watts, after a further 20 s of operation with the air inlet blocked. Any% s' y. [, N& m: n/ b+ ~# r6 }
device that is adjustable without the aid of a tool, and which ensures a flow of air to cool
9 W' t% {1 C5 v% @9 Z! ithe motor in the event of a blockage of a main air inlet, is rendered inoperative.( T. P/ E: m$ o) Q9 u$ z: N
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。
" ]. [# x' _5 g疑问1:测风口全开时的功率为什么还有吸口闭合的状态?% E1 r3 d% E: S
疑问2:Pf和Pi时提到的这两个冷却装置是否是同一个?
3 o: R8 z" p9 C0 s+ L看GB4706.7时更加不知所云啊 |
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