依然 发表于 2012-12-12 11:19 6 r, o+ {; T" d9 z6 a
SJT是hard usage ,SPT是No hard usage,SJT的绝缘皮要比SPT的厚。
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* B% p% a1 D7 f+ R3 j1 Z我想了解一下,hard usage 和 no hard usage分别是指怎样的使用场所? 作者: gmr24185 时间: 2012-12-12 13:18
依然 发表于 2012-12-12 11:19 & P; S( F, F6 B1 j5 E! e
SJT是hard usage ,SPT是No hard usage,SJT的绝缘皮要比SPT的厚。
; c+ }0 y# P5 S- ]: n- w0 q那我这里SPT-2w线能用吗?作者: 依然 时间: 2012-12-12 17:24
参考UL62中的定义:" }8 c8 J" ^" X/ a# j, `4 O
Not-for-hard-usage cord – a cord intended for use with light equipment, classified as the lowest grade # c+ V8 I+ H4 Q! B6 Tin mechanical serviceability. % ^7 U% C# L2 C' ]Hard-usage cord – a cord intended for use with moderately heavy equipment and for hand-held + ?! J" P8 O4 q5 I' Y/ \appliances and tools, classified as the medium grade in mechanical serviceability. . U% H' e0 o: A4 q V+ VExtra-hard-usage cord – a cord intended for use with heavy equipment and for hand-held appliances 3 z: L8 X. z I! |* |: `and tools, classified as the highest grade in mechanical serviceability.作者: 依然 时间: 2012-12-12 17:24
依然 发表于 2012-12-12 17:24 7 q* }+ ]: P* ~3 s参考UL62中的定义: " |# v0 J7 p X {, B) zNot-for-hard-usage cord – a cord intended for use with light equipment, classif ...