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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。
2 I& p; l4 Z' n7 |5 W( sExamples of Class A material are:
0 Y4 ?9 P7 ~$ }, O. |) Y$ B) E# B– impregnated cotton, silk, artificial silk and paper;
% s2 b, p4 b2 p– enamels based on oleo- or polyamide resins.5 G, ]6 C4 f0 A( V' Q+ b2 r
% L8 E& S1 l. Q# f }0 E+ t! nExamples of Class E material are:
+ R+ _& L% H$ e0 A6 j– moldings with cellulose fillers, cotton fabric laminates and paper laminates, bonded with melamineformaldehyde,
" [4 b( w/ z6 o5 X3 R# ?! Q" K* Tphenol-formaldehyde or phenol-furfural resins;8 J$ i, h7 T6 j3 A+ r
– cross-linked polyester resins, cellulose triacetate film, polyethylene terephthalate films;9 ?0 f, t9 C% r+ u
– varnished polyethylene terephthalate textile bonded with oil-modified alkyd resin varnish;
5 H3 R7 y# m. d" Z" w– enamels based on polyvinyl formal, polyurethane or epoxy resins.
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/ }& _2 w+ Y6 L0 S w7 n但是Class B and F Insulation System必须满足UL1446。
) C( L0 e, F/ Q( B) x3 L& ~) o如果没有UL1446认证,按Class E也只能做到90K。3 l+ G% i7 F4 v \. \
1 ~: B) m( \+ w
还有个例外就是:
f1 r' o1 I6 X- wFor 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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请对照确定是哪种绝缘等级。 |
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