|
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,
/ J- O* V* W3 o+ s( jPf is the power input in watts, after 3 min of operation with the air inlet unobstructed. Any' o3 o: B9 ?9 |8 k
device that ensures a flow of air to cool the motor in the event of a blockage of the main
" ~$ u! Z. W- l3 U# {( j. o7 O' h5 Pair inlet is allowed to operate;
3 ]2 j3 X9 ?# g/ C3 k, y& \* h! d. z- W
Pi is the power input in watts, after a further 20 s of operation with the air inlet blocked. Any
) `5 S; g- U1 K6 t, ddevice that is adjustable without the aid of a tool, and which ensures a flow of air to cool. p/ a3 n B8 C- W
the motor in the event of a blockage of a main air inlet, is rendered inoperative.
( ~- {5 W7 p0 F% M/ U9 |: k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。# ?- a, ~" u: n) y. y; o4 o
疑问1:测风口全开时的功率为什么还有吸口闭合的状态?/ \8 O0 @; Q/ A
疑问2:Pf和Pi时提到的这两个冷却装置是否是同一个?
3 A$ K% _- M/ b/ p+ v看GB4706.7时更加不知所云啊 |
|