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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
, \) s' e X" O D# u" K! q2 ^7 V标准附上:a) (Method 1) DOUBLE INSULATION or REINFORCED INSULATION providing permanent separation,assured by barriers, routing or fixing; or
: @+ E' F5 O" w" m7 G7 R, n
" `; a0 N1 d5 u E. b5 vb) (Method 1) DOUBLE INSULATION or REINFORCED INSULATION on or between the parts to be
& l; R# y7 K7 `" W. Q5 r# mseparated; or
1 L7 Z" u1 S( y! oc) (Method 1) DOUBLE INSULATION, consisting of BASIC INSULATION on one of the parts to be+ P' Q# P% x; X; ?% H: w
separated and SUPPLEMENTARY INSULATION on the other part; or
3 J/ {3 r y+ K& g B& F3 Zd) (Method 2) BASIC INSULATION on the part at a HAZARDOUS VOLTAGE, together with protective8 T- z, K; s% c9 U' Q6 H! T- a# s
screening connected to the main protective earthing terminal in accordance with 2.6.1 b);! O9 d# u( y3 I7 _! c2 ^
or
$ ^( O6 A2 g+ j A5 \& Ge) (Method 3) BASIC INSULATION on the part at a HAZARDOUS VOLTAGE, together with' {1 G5 Y/ U: g! `2 J
connection of the other part to the main protective earthing terminal in accordance with ~( x1 ]) M$ `6 c
2.6.1 b), such that the voltage limits for the accessible part are maintained by relative4 T' P6 `$ T0 {2 c1 I+ e
circuit impedances or by the operation of a protective device; or
0 k9 Z( H% b+ d' Qf) any other construction providing equivalent separation. |
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