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不知道你是什么电动工具,UL745-1分Class A, Class E, Class B, Class F。其中Class A和Class E可以为given in the following examples。 3 F$ W' b$ W. c) i0 b* ?1 C
Examples of Class A material are:
/ j% \# z, B: m( T– impregnated cotton, silk, artificial silk and paper;
# l8 S+ {+ y! |' l– enamels based on oleo- or polyamide resins.
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3 W+ i1 f- g2 Y: qExamples of Class E material are:
, w E( Y5 X# c3 G# F: v7 n– moldings with cellulose fillers, cotton fabric laminates and paper laminates, bonded with melamineformaldehyde,; e/ U% u" @# H
phenol-formaldehyde or phenol-furfural resins;1 ~! O* J# r( l5 m* b. t6 c- U8 @
– cross-linked polyester resins, cellulose triacetate film, polyethylene terephthalate films;
/ F* I9 r* W' }; j6 Q: ^- x– varnished polyethylene terephthalate textile bonded with oil-modified alkyd resin varnish;1 f, H; i" \/ [: a! D! i0 ^
– enamels based on polyvinyl formal, polyurethane or epoxy resins.
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但是Class B and F Insulation System必须满足UL1446。8 c8 ~+ Y8 u7 e1 s, _
如果没有UL1446认证,按Class E也只能做到90K。
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还有个例外就是:
' B2 N* z/ X3 o& ~0 G. PFor totally enclosed motors the temperature rise limits for Class A, Class E, and Class B may be increased by 5°C。
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+ j2 N5 m6 K- Y# ?1 T* h/ w请对照确定是哪种绝缘等级。 |
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