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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。 # X0 }5 s! H$ i; P
Examples of Class A material are:
* D% ~& H7 m0 \1 r* ~1 c– impregnated cotton, silk, artificial silk and paper;
: z5 G1 G0 E6 r) r0 Q. J– enamels based on oleo- or polyamide resins.
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: y& @2 U! j# M& N$ s4 {4 zExamples of Class E material are:3 M* n Q0 K# |' M
– moldings with cellulose fillers, cotton fabric laminates and paper laminates, bonded with melamineformaldehyde,) y" H4 q1 {4 `* \
phenol-formaldehyde or phenol-furfural resins;
8 x$ _1 E7 q( _! a' `: n– cross-linked polyester resins, cellulose triacetate film, polyethylene terephthalate films;1 z, R. `, b+ S0 z) R2 R
– varnished polyethylene terephthalate textile bonded with oil-modified alkyd resin varnish;! q: y( |3 D8 f. \' c) M0 i% G
– enamels based on polyvinyl formal, polyurethane or epoxy resins.
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: B- w/ u( i+ E5 y0 Z但是Class B and F Insulation System必须满足UL1446。
J$ L" p3 C. }9 G; Z0 d- Y' f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:
" p6 [; O' W! g# F T6 t7 ?3 [( |For totally enclosed motors the temperature rise limits for Class A, Class E, and Class B may be increased by 5°C。1 i# Z9 N2 |( m9 u5 B) K! p' e0 }
9 h8 Q; ]8 i* b5 l# T7 f1 K3 P9 j# H* k请对照确定是哪种绝缘等级。 |
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