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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。 7 v5 ^5 u! @5 E( K
Examples of Class A material are:
3 d0 v: a7 y/ {! G; E, e– impregnated cotton, silk, artificial silk and paper;4 G; a$ x2 y" x( l- U
– enamels based on oleo- or polyamide resins.
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% F& P# O3 O$ ]2 ?Examples of Class E material are:- u7 Y1 A: _( R: F& J
– moldings with cellulose fillers, cotton fabric laminates and paper laminates, bonded with melamineformaldehyde,
o% K4 {( T7 @phenol-formaldehyde or phenol-furfural resins;, n: [! R, z' Z& t" ~. X9 F
– cross-linked polyester resins, cellulose triacetate film, polyethylene terephthalate films;
* G2 J9 z w- g7 n# T– varnished polyethylene terephthalate textile bonded with oil-modified alkyd resin varnish;2 t; X: T! O1 r- g
– 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。2 F. E; l6 ^. ]- K# n& o
如果没有UL1446认证,按Class E也只能做到90K。, a) ~6 T8 _/ C
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还有个例外就是:, B u1 j8 \7 |4 Q, ?0 M4 G( o( }
For 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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0 k( k+ z. Y& Q请对照确定是哪种绝缘等级。 |
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