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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。 - Y( s. u$ y5 Y ?+ y; m0 e
Examples of Class A material are:
- |! u5 W1 |0 i6 R1 n4 w' ]5 M2 c3 R H– impregnated cotton, silk, artificial silk and paper;
$ M7 u z4 {) \; P– enamels based on oleo- or polyamide resins.
- R/ s& v% ]% T; {# d, K2 j" C6 i* |6 T$ j' X# `2 b
Examples of Class E material are:
+ H( P' u: T7 H! h– moldings with cellulose fillers, cotton fabric laminates and paper laminates, bonded with melamineformaldehyde,
5 {$ P( ]5 h. c" H, B; m/ B) G% jphenol-formaldehyde or phenol-furfural resins;
9 w0 |! g& k7 \. t& H4 H3 [3 v– cross-linked polyester resins, cellulose triacetate film, polyethylene terephthalate films;( m' _2 ]6 M X, a# y
– varnished polyethylene terephthalate textile bonded with oil-modified alkyd resin varnish;+ h& \% f0 c5 Z: I- B4 v
– enamels based on polyvinyl formal, polyurethane or epoxy resins.
% p+ i; g# W4 y7 B& v$ \/ x
8 |2 k9 h2 l; S0 c. o5 K但是Class B and F Insulation System必须满足UL1446。
0 g2 F' }; c7 v' I0 m如果没有UL1446认证，按Class E也只能做到90K。" [1 l' ^, x" t- g; Q
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还有个例外就是：6 G+ x3 \( |/ L1 t/ \
For totally enclosed motors the temperature rise limits for Class A, Class E, and Class B may be increased by 5°C。 T* k# r5 e" E5 l
) d+ G2 R/ o- C% O5 B请对照确定是哪种绝缘等级。 |
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发表于 2011-9-9 08:35
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