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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,4 W9 {+ ]( _* ^0 n! W! s% t7 h( \
Pf is the power input in watts, after 3 min of operation with the air inlet unobstructed. Any
* x3 `; g" s7 {- }4 L6 I$ Kdevice that ensures a flow of air to cool the motor in the event of a blockage of the main
; Y" f7 D& N" S% Jair inlet is allowed to operate;
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' _3 P1 x6 F0 u; |+ h3 L( q( IPi is the power input in watts, after a further 20 s of operation with the air inlet blocked. Any2 m% D9 C7 y$ V
device that is adjustable without the aid of a tool, and which ensures a flow of air to cool
+ Y/ w% |* W2 \- {the motor in the event of a blockage of a main air inlet, is rendered inoperative.9 {! P" Z, ?' B4 c$ K. O
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。
' Z. }+ R" u+ ^ x2 q疑问1:测风口全开时的功率为什么还有吸口闭合的状态?
: X5 i2 E( ~* t9 F: x* c v疑问2:Pf和Pi时提到的这两个冷却装置是否是同一个?0 n# e& B6 X' j
看GB4706.7时更加不知所云啊 |
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