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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," p$ `5 O; k4 B: E" l0 }& i
Pf is the power input in watts, after 3 min of operation with the air inlet unobstructed. Any" \" {0 O- N9 _& b. |! K
device that ensures a flow of air to cool the motor in the event of a blockage of the main- p* _6 J, B. `2 J* G7 ^( r
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. `+ k. \6 r- y2 w6 y/ K
device that is adjustable without the aid of a tool, and which ensures a flow of air to cool
& [1 Y/ K( X2 {7 ethe motor in the event of a blockage of a main air inlet, is rendered inoperative.( z! n! K; E% Z: o; N8 V r! J
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。
' C) `' F) q" ]5 y$ t7 [4 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?
; g0 Y/ | D Y' |3 C2 C. U( u1 P疑问2:Pf和Pi时提到的这两个冷却装置是否是同一个?
$ Z w" [/ i, |+ H看GB4706.7时更加不知所云啊 |
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