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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5 q F2 ?" t2 x. C2 k
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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$ U2 @' q, u' `4 B2 i, Pb) (Method 1) DOUBLE INSULATION or REINFORCED INSULATION on or between the parts to be
" F, K6 @9 Q9 F+ q2 iseparated; or. G2 g G7 A! C f! G1 J& O
c) (Method 1) DOUBLE INSULATION, consisting of BASIC INSULATION on one of the parts to be* b6 g B5 c/ F7 s" l
separated and SUPPLEMENTARY INSULATION on the other part; or$ B1 o8 j1 j* P
d) (Method 2) BASIC INSULATION on the part at a HAZARDOUS VOLTAGE, together with protective% {$ | f+ C+ Q- h- j
screening connected to the main protective earthing terminal in accordance with 2.6.1 b);
0 ^' ~# ~0 @+ A2 U# ?( ]or; |: K% O: `, j/ V B. I
e) (Method 3) BASIC INSULATION on the part at a HAZARDOUS VOLTAGE, together with7 V# p$ d% {3 \% x, S) T& ~ j
connection of the other part to the main protective earthing terminal in accordance with
0 V( K7 |# y$ i( `" T/ c2 G2.6.1 b), such that the voltage limits for the accessible part are maintained by relative9 \* F5 \ J( O: ~7 a3 k
circuit impedances or by the operation of a protective device; or+ d' x: H0 I5 O/ Z Z* ?
f) any other construction providing equivalent separation. |
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