标题: UL507 电风扇扇叶材料问题 [打印本页] 作者: aha0827 时间: 2012-8-10 13:56 标题: UL507 电风扇扇叶材料问题 UL507风扇标准中关于风扇的扇叶有如下要求：( x4 W3 j9 S9 c! U) g9 l: o
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. ' F6 R7 L* J, i5 ^ 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: " d" Q$ K9 y F$ |. C4 ~ ~, @ 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: , X( ^, i+ H0 F. C* E其中例外1“For all motor types except skeleton or open frame”是指哪种电机？ 2 @ e2 t+ O7 u' {1 q7 b 例外2“For bobbin-wound skeleton motors”又是指哪种电机。 4 K. N3 w% _8 j. a( E" u5 H% B2 g 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。/ L! Q6 R( g& N; B u
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电机1, ~" U) M1 y2 G0 g
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电机2 1 J5 z/ p* x$ r u9 }, Y % `) E# j4 m7 h4 x5 l作者: aha0827 时间: 2012-8-10 15:01
例外2中提到：* D" e; x- {* r1 Q4 w. E
c) The space between the coil covering and bobbin does not exceed 0.8 mm total.( b5 ?& W2 J; e: M* t# v2 Z
这是哪个位置的，不理解。谁能帮忙解释下，最好有图解！谢谢！作者: xiaogao22 时间: 2014-9-25 17:55
no.---motor 2