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发表于 2010-9-9 15:24
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fjapple大侠,谢谢你,还有问题想问你:2.9.4里面Separation from hazardous voltages方法1,2,3对于I类产品我应该选用哪一种呢?谢谢- z7 x- q8 U/ B7 Q$ A3 i" T
标准附上:a) (Method 1) DOUBLE INSULATION or REINFORCED INSULATION providing permanent separation,assured by barriers, routing or fixing; or4 s2 I6 X ]; h5 s
) N1 T% l! x! Lb) (Method 1) DOUBLE INSULATION or REINFORCED INSULATION on or between the parts to be7 T# s, i6 _' V" k3 Y
separated; or; b, @5 l0 U) a! |& i: D
c) (Method 1) DOUBLE INSULATION, consisting of BASIC INSULATION on one of the parts to be7 a K% r( }# B1 x2 U
separated and SUPPLEMENTARY INSULATION on the other part; or
5 Q5 V2 K3 G! s' }9 n. ?" ]% nd) (Method 2) BASIC INSULATION on the part at a HAZARDOUS VOLTAGE, together with protective
" e' p5 s* g$ q( zscreening connected to the main protective earthing terminal in accordance with 2.6.1 b);& V9 M1 c2 {, y7 @; j( Z
or
+ d4 ]4 u* ?+ ~5 B6 v- }e) (Method 3) BASIC INSULATION on the part at a HAZARDOUS VOLTAGE, together with# t* X( R4 t ]
connection of the other part to the main protective earthing terminal in accordance with
; c8 _) j9 ^( a, e( t/ G# b: }2.6.1 b), such that the voltage limits for the accessible part are maintained by relative
2 U- ?- h( `' _* w0 scircuit impedances or by the operation of a protective device; or
& T; ^ D! S. u/ o% x" `f) any other construction providing equivalent separation. |
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