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UL507风扇标准中关于风扇的扇叶有如下要求：, p$ E$ ]2 ^6 P- J: P# ~
6.4.2 An impeller of polymeric material outside a motor shall not be located within 25.4 mm (1 inch) of an opening in the motor housing.( |: j% N% Z. Y) ^# d
Exception No. 1: For all motor types except skeleton or open frame, an impeller is not prohibited from being within 25.4 mm of an opening in the motor housing when:9 Y0 d- O e! ^0 J' ^/ \
Exception No. 2: For bobbin-wound skeleton motors employed in a product other than ceiling-insert, wall-insert fans, or rangehoods, an impeller is not prohibited from being within 25.4 mm of the motor windings when:
% z0 M) |: l2 u其中例外1“For all motor types except skeleton or open frame”是指哪种电机？
8 i) }7 E3 Y7 |8 H! o) n i d 例外2“For bobbin-wound skeleton motors”又是指哪种电机。 ]5 r) a3 M- ?0 t( ~0 @
我的风扇有串激的，也有罩激的，如图，谁能帮忙确定下，电机1和电机2分别适用哪条例外。4 H- a* `! u: e6 {
/ {9 Y: h4 H y2 h+ ^3 d电机1
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电机2: Y5 n0 q1 X: M- O# s7 L( R
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发表于 2012-8-10 13:56
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