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地板
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发表于 2009-12-17 11:42
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编制软线确实不可随意使用!+ o( P/ f% X3 D6 @: e- i' x! L
IEC60335-1(Editio 4.2)(GB4706.1-2005)要求:
' `; h7 l6 C6 _25.7 Supply cords shall not be lighter than( c: N* d9 J+ t/ y, W& `+ j0 S
– braided cord (code designation 60245 IEC 51), if allowed in the relevant part 2;& v/ {7 J; h6 y9 ^: e i+ r
要使用编制软线,需要标准第2部分(特标)允许。请看,有几个特标允许用编制软线!
( B1 g7 g, Z/ E6 R4 t9 G$ C3 C
+ P& y% _$ v; f' s: l, L而IECIEC60335-1(Editio 4.2)似乎已经取消了编织线的使用,且相应条款25.7做了较大改动:
" Q/ q$ V# ~' p/ M: d' O5 L25.7 Supply cords shall be one of the following types:
& f* V9 \9 D0 |& S2 I+ @# f6 a/ E– Rubber sheathed.
; a4 g$ }* ?) f% E5 W3 uTheir properties shall be at least those of ordinary tough rubber sheathed cords (code3 _4 e+ q: M3 D# M. i y& l! N
designation 60245 IEC 53);& z \9 X+ l a+ q0 W1 R
NOTE 1 These cords are not suitable for appliances intended to be used outdoors or when they are liable to be exposed to significant amounts of ultraviolet radiation.
- ^* W: `. G; ~: N l, N– Polychloroprene sheathed. i0 X( T* S, N% \3 ]
Their properties shall be at least those of ordinary polychloroprene sheathed cords (code
+ K \1 _6 }0 Q! hdesignation 60245 IEC 57);
# \" W2 x+ G$ z( R; R* yNOTE 2 These cords are suitable for appliances intended to be used in low temperature applications.
- v ?1 i; W$ q i+ @4 g– Cross-linked polyvinyl chloride sheathed.5 [( u0 O- v4 V) h" F. G
Their properties shall be at least those of cross-linked polyvinyl chloride sheathed cords# {6 d6 a( e, l1 P7 H
(code designation 60245 IEC 87);6 V# C0 A5 g/ b% y
NOTE 3 These cords are suitable for appliances when they may come into contact with hot surfaces. Due to the composition of the conductors, the cords are suitable for applications where high flexibility is required.+ S/ m; o! s( O3 {; N+ ~5 _* p
– Polyvinyl chloride sheathed.# \7 v" `( t* X& c' j5 c4 a
These cords shall not be used if they are likely to touch metal parts having a temperature6 y2 i* Q4 W B' G; i7 ]4 z
rise exceeding 75 K during the test of Clause 11. Their properties shall be at least those of9 m# Z" p- v0 G4 ]
• light polyvinyl chloride sheathed cord (code designation 60227 IEC 52), for appliances
: |: p6 A3 o& c4 `' E: qhaving a mass not exceeding 3 kg;
' C. L; }1 X2 q& ^7 x9 F$ y- e• ordinary polyvinyl chloride sheathed cord (code designation 60227 IEC 53), for other
- ?: @ }) N$ }' Happliances;; a' E5 K8 R5 |
– Heat resistant polyvinyl chloride sheathed.8 p8 A% N I% u& i3 F, i) t
These cords shall not be used for type X attachment other than specially prepared cords.
* H( v! ]) H5 h* Q0 h) g y4 JTheir properties shall be at least those of
9 f* H* r% T5 {/ n" v4 T& W; n• heat-resistant light polyvinyl chloride sheathed cord (code designation 60227 IEC 56),
6 F7 m/ m# ?4 {3 w8 {for appliances having a mass not exceeding 3 kg;
( s# J( H& }3 |. E• heat-resistant polyvinyl chloride sheathed cord (code designation 60227 IEC 57), for
2 }) b3 L2 m5 L; a$ x: fother appliances.5 t# T2 z- a* a9 N6 X* s5 ]5 V/ X
Compliance is checked by measurement. |
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