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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:
2 \& Z7 k6 p4 ]$ x 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?
/ ?5 A( |# L/ G9 b6 B ] 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。9 O6 f. l; O0 @( e }- @2 }$ D
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?
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6 C2 w& @: Y/ b8 w# ?+ n8 D 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。+ r7 Z' h5 h9 e, [# q
标准条款:
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/ ?$ t6 Y# F, W3 L$ ^ME EQUIPMENT shall have two MEANS OF PROTECTION to prevent APPLIED PARTS and other# j# W* X5 Y3 d' g9 w
ACCESSIBLE PARTS from exceeding the limits specified in 8.4.+ C# C% n3 e+ C7 ?* H
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. Y5 v# t$ s' H% g8.5.2.1 * F-TYPE APPLIED PARTS8 S- `+ I% P/ t: e' w" N
The PATIENT CONNECTION(S) of any F-TYPE APPLIED PART shall be separated from all other parts,
- A& Y+ H% r2 Z5 C4 Eincluding the PATIENT CONNECTION(S) of other APPLIED PARTS, by means equivalent to one, ?6 }4 N5 @3 l1 D4 S
MEANS OF PATIENT PROTECTION for a WORKING VOLTAGE equal to the MAXIMUM MAINS VOLTAGE
6 I( f, i; }" F; O4 c6 wand shall comply with the specified limit for PATIENT LEAKAGE CURRENT with 110 % of the
% ?1 g( H+ w+ C* t6 \, W6 _MAXIMUM MAINS VOLTAGE applied." w4 z2 U! h7 @1 R- b. E% y% x/ V- a( l4 i
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