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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/ E2 x! j+ T' S2 S+ I
Pf is the power input in watts, after 3 min of operation with the air inlet unobstructed. Any
2 \) D' W6 ^/ S( ] }8 ^ e; c; }& Q' kdevice that ensures a flow of air to cool the motor in the event of a blockage of the main
7 U1 w; l; z3 ^% W6 R5 Aair inlet is allowed to operate;
f' C, @4 Z0 ^6 {2 W( H, t1 M% h- z% h" b
Pi is the power input in watts, after a further 20 s of operation with the air inlet blocked. Any
% F1 c% i7 t( C! ]# D! g! X7 pdevice that is adjustable without the aid of a tool, and which ensures a flow of air to cool
. @6 d- L0 m. ~ `$ Ythe motor in the event of a blockage of a main air inlet, is rendered inoperative.
# N: f7 T) O# h; \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。
. I/ V6 j9 Y+ K J0 H" P疑问1:测风口全开时的功率为什么还有吸口闭合的状态?/ s" p5 h# q9 Q3 F; _
疑问2:Pf和Pi时提到的这两个冷却装置是否是同一个?4 w2 F2 f4 H; {3 O
看GB4706.7时更加不知所云啊 |
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