|
这句话看了几遍, 还是搞不太懂, 请高人指点:
1 ~4 B7 O# ~3 ^ a$ Y2 ~1 v(摘自IEC 60950-1第2.9章表 2G注解3, 即所谓的S/R绝缘)9 S8 n3 \" b6 F0 U7 |! }, q, z
3) Insulation between an unearthed SECONDARY CIRCUIT at HAZARDOUS VOLTAGE and an unearthed accessible conductive part or circuit (S/R in figure 2F) shall satisfy the more onerous of the following:$ G+ F0 V: @8 I( h5 p2 G
– REINFORCED INSULATION whose WORKING VOLTAGE is equal to the HAZARDOUS VOLTAGE; or
, h; n3 c' }) G& p9 M% r; ^7 a– SUPPLEMENTARY INSULATION whose WORKING VOLTAGE is equal to the voltage between the SECONDARY CIRCUIT at HAZARDOUS VOLTAGE and8 P" h/ J/ H' d
• another SECONDARY CIRCUIT at HAZARDOUS VOLTAGE, or! X3 q( K$ V: P
• a PRIMARY CIRCUIT.5 b' g: Y- V- c% z4 N$ D* p
These examples apply if:0 ^5 [) J% n* c9 ?& b" Z
– there is only BASIC INSULATION between the SECONDARY CIRCUIT and the PRIMARY CIRCUIT; and8 G, |2 B5 h* \: T5 s5 m& m
– there is only BASIC INSULATION between the SECONDARY CIRCUIT and earth.& W0 m, @& `) P. i1 E
大意看是不是这样:
& R6 G& N2 e+ R; m: s% o/ {) D& D 当未接地的次级高压与初级电路及大地间都只有基本绝缘的时候,该次级高压与未接地的可触及部分间的绝缘应满足如下要求之更恶劣者:
! J. K4 [. \0 Y) U. v5 A3 B - 取次级高压为工作电压, 要求加强绝缘;* e! n, ^6 X c2 [: j$ V2 V/ l5 ~
- 基于两个相邻的次级高压的工作电压, 要求附加绝缘;3 w' s" Q" z7 f7 A$ Q7 O; u" c
- 基于该次级高压与初级电路的工作电压, 要求附加绝缘. |
|