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本帖最后由 小二哥好 于 2016-9-27 15:31 编辑
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请教:4 [4 T; n- W7 \+ {! B2 l1 |
在做IEC60601-1:2012时,内部电路到外壳的爬电距离、空气间隙是否需要考虑?0 `! |3 n2 d3 z* \ z. _ @: x
产品说明:适配器供电,初级AC240到次级DC15V。主机15V工作,但是由于功能需要,主机内部有变压器将DC15V转化为AC 70V(rms).应用部分与次级电路之间没有隔离,次级电路整个都算作是患者电路了。
4 l! W( U7 F+ }- k+ l/ o N 次级电路到外壳(塑料外壳)之间的绝缘要求是否需要符合1MOPP,工作电压240V和2MOPP,工作电压70V的绝缘要求呢。测量的爬电距离的点是不是次级电路到外壳的缝隙处?; [7 D! u& _6 `, x9 _6 g: u, @
. W f/ G# |1 d) K: K- [+ G 应用部分是BF型的应用部分,次级与地是隔离的,整个外壳都是塑料外壳。4 s! J8 z. E" P% C/ k
标准条款:
- V/ r. g9 E' c: p8.5.1.1 General
, o! ]! m, ^: S& t/ D' PME EQUIPMENT shall have two MEANS OF PROTECTION to prevent APPLIED PARTS and other
& Q8 U. }, T8 |$ ^: rACCESSIBLE PARTS from exceeding the limits specified in 8.4.
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8.5.2.1 * F-TYPE APPLIED PARTS
+ \5 |( _7 M! c4 l/ E4 hThe PATIENT CONNECTION(S) of any F-TYPE APPLIED PART shall be separated from all other parts,6 f+ y0 j. q% H* e& _
including the PATIENT CONNECTION(S) of other APPLIED PARTS, by means equivalent to one/ ]4 c8 _/ a/ n- z
MEANS OF PATIENT PROTECTION for a WORKING VOLTAGE equal to the MAXIMUM MAINS VOLTAGE) ^* n, H; i+ m+ h- v _
and shall comply with the specified limit for PATIENT LEAKAGE CURRENT with 110 % of the
0 K) s8 j$ I/ n5 v+ XMAXIMUM MAINS VOLTAGE applied.; p5 u# B9 K" S! B+ T; f* U
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