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：+ `6 V8 }) j' ]
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. 7 q& M3 c' H7 V, E 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: 7 i- G& N- y7 j* |* B2 a9 t( |: F 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:5 z( D# W# d) U& j+ F3 X
其中例外1“For all motor types except skeleton or open frame”是指哪种电机？' L/ V y8 x4 [! |1 A$ }
例外2“For bobbin-wound skeleton motors”又是指哪种电机。( ?8 `0 G4 \- U
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。, t X" V1 m8 [" a" u( j
[attach]75057[/attach] 3 k/ w8 x! u* y2 d1 U电机11 N6 U- m e) k
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[attach]75056[/attach] * i2 g* M( y7 G2 ~电机2+ q$ x% K" z8 n# ?) L: j
0 d* s/ X9 V M 作者: aha0827 时间: 2012-8-10 15:01
例外2中提到： 4 A& [! f) U- ~2 N0 G% n3 Uc) The space between the coil covering and bobbin does not exceed 0.8 mm total. 5 t1 ~7 x( p& P! g+ C' A( H) q# N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