|
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,
; S4 R. X- ]4 SPf is the power input in watts, after 3 min of operation with the air inlet unobstructed. Any1 U/ Y: U! j7 `
device that ensures a flow of air to cool the motor in the event of a blockage of the main+ V* ]- A- A8 D7 D: k4 |
air inlet is allowed to operate;
% e5 e& Q6 }2 k3 F& H& I. ~ g- g. f+ a! n# G6 o# b0 Q3 ]2 l, C5 R
Pi is the power input in watts, after a further 20 s of operation with the air inlet blocked. Any
; m9 U- ^! o6 L% ?3 odevice that is adjustable without the aid of a tool, and which ensures a flow of air to cool/ J, { l: j; F3 E, E7 ~4 q" f
the motor in the event of a blockage of a main air inlet, is rendered inoperative.4 t# w! S0 t |# B
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。; h" ]. ~7 y: ^' w6 B
疑问1:测风口全开时的功率为什么还有吸口闭合的状态?; M1 q _8 Z, a2 T" L" {
疑问2:Pf和Pi时提到的这两个冷却装置是否是同一个?" g2 G/ N2 |7 H, l d
看GB4706.7时更加不知所云啊 |
|