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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
4 J5 F. z# A1 |; }- j标准附上:a) (Method 1) DOUBLE INSULATION or REINFORCED INSULATION providing permanent separation,assured by barriers, routing or fixing; or
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b) (Method 1) DOUBLE INSULATION or REINFORCED INSULATION on or between the parts to be
0 X+ {0 \$ i- O4 _separated; or5 X( Z. H. f n3 L& S
c) (Method 1) DOUBLE INSULATION, consisting of BASIC INSULATION on one of the parts to be
' J0 V; `9 }8 P3 \! [" kseparated and SUPPLEMENTARY INSULATION on the other part; or; Y: l1 i% ^; X: e
d) (Method 2) BASIC INSULATION on the part at a HAZARDOUS VOLTAGE, together with protective
' S; W9 r" k- hscreening connected to the main protective earthing terminal in accordance with 2.6.1 b);5 l2 i# T. V! m G8 {1 |# G- S" w {, u
or
- b/ R, s0 A1 Z4 y0 ae) (Method 3) BASIC INSULATION on the part at a HAZARDOUS VOLTAGE, together with K! v% m0 G+ {1 c- N
connection of the other part to the main protective earthing terminal in accordance with
5 c: [" L* z# g- ^$ s f; C6 K2.6.1 b), such that the voltage limits for the accessible part are maintained by relative
1 y" D* S2 y! _2 Lcircuit impedances or by the operation of a protective device; or
7 `( w) L3 m0 ]/ h# J5 r0 k$ Pf) any other construction providing equivalent separation. |
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